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[cleanup] Remove always-off support for tail calls

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The tail call implementation is hidden behind the --harmony-tailcalls
flag, which is off-by-default (and has been unstaged since February).
It is known to be broken in a variety of cases, including clusterfuzz
security issues (see sample Chromium issues below). To avoid letting
the implementation bitrot further on trunk, this patch removes it.

Bug: v8:4698, chromium:636914, chromium:724746
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng;master.tryserver.v8:v8_linux_noi18n_rel_ng
Change-Id: I9cb547101456a582374fdf7b1a3f044a9ef33e5c
Reviewed-on: https://chromium-review.googlesource.com/569069
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46651}
This commit is contained in:
Adam Klein 2017-07-13 11:06:15 -07:00 committed by Commit Bot
parent 415fd8d8d1
commit 1769f892ce
105 changed files with 284 additions and 3395 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
src/api.cc
View File

@ -9287,14 +9287,9 @@ void Debug::SetLiveEditEnabled(Isolate* isolate, bool enable) {
debug::SetLiveEditEnabled(isolate, enable);
}
bool Debug::IsTailCallEliminationEnabled(Isolate* isolate) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
return internal_isolate->is_tail_call_elimination_enabled();
}
bool Debug::IsTailCallEliminationEnabled(Isolate* isolate) { return false; }
void Debug::SetTailCallEliminationEnabled(Isolate* isolate, bool enabled) {
i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
internal_isolate->SetTailCallEliminationEnabled(enabled);
}
MaybeLocal<Array> Debug::GetInternalProperties(Isolate* v8_isolate,

5
src/assembler.cc
View File

@ -1573,11 +1573,6 @@ ExternalReference ExternalReference::cpu_features() {
return ExternalReference(&CpuFeatures::supported_);
}
ExternalReference ExternalReference::is_tail_call_elimination_enabled_address(
Isolate* isolate) {
return ExternalReference(isolate->is_tail_call_elimination_enabled_address());
}
ExternalReference ExternalReference::promise_hook_or_debug_is_active_address(
Isolate* isolate) {
return ExternalReference(isolate->promise_hook_or_debug_is_active_address());

8
src/assembler.h
View File

@ -431,7 +431,7 @@ class RelocInfo {
}
static inline bool IsDebugBreakSlot(Mode mode) {
return IsDebugBreakSlotAtPosition(mode) || IsDebugBreakSlotAtReturn(mode) ||
IsDebugBreakSlotAtCall(mode) || IsDebugBreakSlotAtTailCall(mode);
IsDebugBreakSlotAtCall(mode);
}
static inline bool IsDebugBreakSlotAtPosition(Mode mode) {
return mode == DEBUG_BREAK_SLOT_AT_POSITION;
@ -442,9 +442,6 @@ class RelocInfo {
static inline bool IsDebugBreakSlotAtCall(Mode mode) {
return mode == DEBUG_BREAK_SLOT_AT_CALL;
}
static inline bool IsDebugBreakSlotAtTailCall(Mode mode) {
return mode == DEBUG_BREAK_SLOT_AT_TAIL_CALL;
}
static inline bool IsNone(Mode mode) {
return mode == NONE32 || mode == NONE64;
}
@ -1007,9 +1004,6 @@ class ExternalReference BASE_EMBEDDED {
static ExternalReference cpu_features();
static ExternalReference is_tail_call_elimination_enabled_address(
Isolate* isolate);
static ExternalReference debug_is_active_address(Isolate* isolate);
static ExternalReference debug_hook_on_function_call_address(
Isolate* isolate);

10
src/ast/ast.cc
View File

@ -159,16 +159,6 @@ bool Expression::IsAccessorFunctionDefinition() const {
return IsFunctionLiteral() && IsAccessorFunction(AsFunctionLiteral()->kind());
}
void Expression::MarkTail() {
if (IsConditional()) {
AsConditional()->MarkTail();
} else if (IsCall()) {
AsCall()->MarkTail();
} else if (IsBinaryOperation()) {
AsBinaryOperation()->MarkTail();
}
}
bool Statement::IsJump() const {
switch (node_type()) {
#define JUMP_NODE_LIST(V) \

29
src/ast/ast.h
View File

@ -282,9 +282,6 @@ class Expression : public AstNode {
kTest
};
// Mark this expression as being in tail position.
void MarkTail();
// True iff the expression is a valid reference expression.
bool IsValidReferenceExpression() const;
@ -1757,12 +1754,6 @@ class Call final : public Expression {
return IsPossiblyEvalField::decode(bit_field_);
}
TailCallMode tail_call_mode() const {
return IsTailField::decode(bit_field_) ? TailCallMode::kAllow
: TailCallMode::kDisallow;
}
void MarkTail() { bit_field_ = IsTailField::update(bit_field_, true); }
bool only_last_arg_is_spread() {
return !arguments_->is_empty() && arguments_->last()->IsSpread();
}
@ -1805,8 +1796,8 @@ class Call final : public Expression {
class IsUninitializedField
: public BitField<bool, Expression::kNextBitFieldIndex, 1> {};
class IsTailField : public BitField<bool, IsUninitializedField::kNext, 1> {};
class IsPossiblyEvalField : public BitField<bool, IsTailField::kNext, 1> {};
class IsPossiblyEvalField
: public BitField<bool, IsUninitializedField::kNext, 1> {};
FeedbackSlot ic_slot_;
Expression* expression_;
@ -1945,17 +1936,6 @@ class BinaryOperation final : public Expression {
Expression* right() const { return right_; }
void set_right(Expression* e) { right_ = e; }
void MarkTail() {
switch (op()) {
case Token::COMMA:
case Token::AND:
case Token::OR:
right_->MarkTail();
default:
break;
}
}
void AssignFeedbackSlots(FeedbackVectorSpec* spec, LanguageMode language_mode,
FeedbackSlotCache* cache);
@ -2110,11 +2090,6 @@ class Conditional final : public Expression {
void set_then_expression(Expression* e) { then_expression_ = e; }
void set_else_expression(Expression* e) { else_expression_ = e; }
void MarkTail() {
then_expression_->MarkTail();
else_expression_->MarkTail();
}
private:
friend class AstNodeFactory;

4
src/ast/prettyprinter.cc
View File

@ -1147,9 +1147,7 @@ void AstPrinter::VisitProperty(Property* node) {
void AstPrinter::VisitCall(Call* node) {
EmbeddedVector<char, 128> buf;
const char* name =
node->tail_call_mode() == TailCallMode::kAllow ? "TAIL CALL" : "CALL";
FormatSlotNode(&buf, node, name, node->CallFeedbackICSlot());
FormatSlotNode(&buf, node, "CALL", node->CallFeedbackICSlot());
IndentedScope indent(this, buf.start());
Visit(node->expression());

1
src/bootstrapper.cc
View File

@ -4055,7 +4055,6 @@ EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_regexp_lookbehind)
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_regexp_named_captures)
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_regexp_property)
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_function_sent)
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_tailcalls)
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_restrictive_generators)
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_function_tostring)
EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_class_fields)

129
src/builtins/arm/builtins-arm.cc
View File

@ -1306,7 +1306,7 @@ static void Generate_InterpreterPushArgs(MacroAssembler* masm,
// static
void Builtins::Generate_InterpreterPushArgsThenCallImpl(
MacroAssembler* masm, ConvertReceiverMode receiver_mode,
TailCallMode tail_call_mode, InterpreterPushArgsMode mode) {
InterpreterPushArgsMode mode) {
// ----------- S t a t e -------------
// -- r0 : the number of arguments (not including the receiver)
// -- r2 : the address of the first argument to be pushed. Subsequent
@ -1336,15 +1336,14 @@ void Builtins::Generate_InterpreterPushArgsThenCallImpl(
// Call the target.
if (mode == InterpreterPushArgsMode::kJSFunction) {
__ Jump(masm->isolate()->builtins()->CallFunction(ConvertReceiverMode::kAny,
tail_call_mode),
__ Jump(
masm->isolate()->builtins()->CallFunction(ConvertReceiverMode::kAny),
RelocInfo::CODE_TARGET);
} else if (mode == InterpreterPushArgsMode::kWithFinalSpread) {
__ Jump(masm->isolate()->builtins()->CallWithSpread(),
RelocInfo::CODE_TARGET);
} else {
__ Jump(masm->isolate()->builtins()->Call(ConvertReceiverMode::kAny,
tail_call_mode),
__ Jump(masm->isolate()->builtins()->Call(ConvertReceiverMode::kAny),
RelocInfo::CODE_TARGET);
}
@ -2213,102 +2212,9 @@ void Builtins::Generate_CallOrConstructForwardVarargs(MacroAssembler* masm,
__ Jump(code, RelocInfo::CODE_TARGET);
}
namespace {
// Drops top JavaScript frame and an arguments adaptor frame below it (if
// present) preserving all the arguments prepared for current call.
// Does nothing if debugger is currently active.
// ES6 14.6.3. PrepareForTailCall
//
// Stack structure for the function g() tail calling f():
//
// ------- Caller frame: -------
// | ...
// | g()'s arg M
// | ...
// | g()'s arg 1
// | g()'s receiver arg
// | g()'s caller pc
// ------- g()'s frame: -------
// | g()'s caller fp <- fp
// | g()'s context
// | function pointer: g
// | -------------------------
// | ...
// | ...
// | f()'s arg N
// | ...
// | f()'s arg 1
// | f()'s receiver arg <- sp (f()'s caller pc is not on the stack yet!)
// ----------------------
//
void PrepareForTailCall(MacroAssembler* masm, Register args_reg,
Register scratch1, Register scratch2,
Register scratch3) {
DCHECK(!AreAliased(args_reg, scratch1, scratch2, scratch3));
Comment cmnt(masm, "[ PrepareForTailCall");
// Prepare for tail call only if ES2015 tail call elimination is enabled.
Label done;
ExternalReference is_tail_call_elimination_enabled =
ExternalReference::is_tail_call_elimination_enabled_address(
masm->isolate());
__ mov(scratch1, Operand(is_tail_call_elimination_enabled));
__ ldrb(scratch1, MemOperand(scratch1));
__ cmp(scratch1, Operand(0));
__ b(eq, &done);
// Drop possible interpreter handler/stub frame.
{
Label no_interpreter_frame;
__ ldr(scratch3,
MemOperand(fp, CommonFrameConstants::kContextOrFrameTypeOffset));
__ cmp(scratch3, Operand(StackFrame::TypeToMarker(StackFrame::STUB)));
__ b(ne, &no_interpreter_frame);
__ ldr(fp, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
__ bind(&no_interpreter_frame);
}
// Check if next frame is an arguments adaptor frame.
Register caller_args_count_reg = scratch1;
Label no_arguments_adaptor, formal_parameter_count_loaded;
__ ldr(scratch2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
__ ldr(scratch3,
MemOperand(scratch2, CommonFrameConstants::kContextOrFrameTypeOffset));
__ cmp(scratch3,
Operand(StackFrame::TypeToMarker(StackFrame::ARGUMENTS_ADAPTOR)));
__ b(ne, &no_arguments_adaptor);
// Drop current frame and load arguments count from arguments adaptor frame.
__ mov(fp, scratch2);
__ ldr(caller_args_count_reg,
MemOperand(fp, ArgumentsAdaptorFrameConstants::kLengthOffset));
__ SmiUntag(caller_args_count_reg);
__ b(&formal_parameter_count_loaded);
__ bind(&no_arguments_adaptor);
// Load caller's formal parameter count
__ ldr(scratch1,
MemOperand(fp, ArgumentsAdaptorFrameConstants::kFunctionOffset));
__ ldr(scratch1,
FieldMemOperand(scratch1, JSFunction::kSharedFunctionInfoOffset));
__ ldr(caller_args_count_reg,
FieldMemOperand(scratch1,
SharedFunctionInfo::kFormalParameterCountOffset));
__ bind(&formal_parameter_count_loaded);
ParameterCount callee_args_count(args_reg);
__ PrepareForTailCall(callee_args_count, caller_args_count_reg, scratch2,
scratch3);
__ bind(&done);
}
} // namespace
// static
void Builtins::Generate_CallFunction(MacroAssembler* masm,
ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
ConvertReceiverMode mode) {
// ----------- S t a t e -------------
// -- r0 : the number of arguments (not including the receiver)
// -- r1 : the function to call (checked to be a JSFunction)
@ -2394,10 +2300,6 @@ void Builtins::Generate_CallFunction(MacroAssembler* masm,
// -- cp : the function context.
// -----------------------------------
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, r0, r3, r4, r5);
}
__ ldr(r2,
FieldMemOperand(r2, SharedFunctionInfo::kFormalParameterCountOffset));
ParameterCount actual(r0);
@ -2495,18 +2397,13 @@ void Generate_PushBoundArguments(MacroAssembler* masm) {
} // namespace
// static
void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
TailCallMode tail_call_mode) {
void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm) {
// ----------- S t a t e -------------
// -- r0 : the number of arguments (not including the receiver)
// -- r1 : the function to call (checked to be a JSBoundFunction)
// -----------------------------------
__ AssertBoundFunction(r1);
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, r0, r3, r4, r5);
}
// Patch the receiver to [[BoundThis]].
__ ldr(r3, FieldMemOperand(r1, JSBoundFunction::kBoundThisOffset));
__ str(r3, MemOperand(sp, r0, LSL, kPointerSizeLog2));
@ -2524,8 +2421,7 @@ void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
}
// static
void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode) {
// ----------- S t a t e -------------
// -- r0 : the number of arguments (not including the receiver)
// -- r1 : the target to call (can be any Object).
@ -2535,10 +2431,10 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
__ JumpIfSmi(r1, &non_callable);
__ bind(&non_smi);
__ CompareObjectType(r1, r4, r5, JS_FUNCTION_TYPE);
__ Jump(masm->isolate()->builtins()->CallFunction(mode, tail_call_mode),
__ Jump(masm->isolate()->builtins()->CallFunction(mode),
RelocInfo::CODE_TARGET, eq);
__ cmp(r5, Operand(JS_BOUND_FUNCTION_TYPE));
__ Jump(masm->isolate()->builtins()->CallBoundFunction(tail_call_mode),
__ Jump(masm->isolate()->builtins()->CallBoundFunction(),
RelocInfo::CODE_TARGET, eq);
// Check if target has a [[Call]] internal method.
@ -2549,11 +2445,6 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
__ cmp(r5, Operand(JS_PROXY_TYPE));
__ b(ne, &non_function);
// 0. Prepare for tail call if necessary.
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, r0, r3, r4, r5);
}
// 1. Runtime fallback for Proxy [[Call]].
__ Push(r1);
// Increase the arguments size to include the pushed function and the
@ -2571,7 +2462,7 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
// Let the "call_as_function_delegate" take care of the rest.
__ LoadNativeContextSlot(Context::CALL_AS_FUNCTION_DELEGATE_INDEX, r1);
__ Jump(masm->isolate()->builtins()->CallFunction(
ConvertReceiverMode::kNotNullOrUndefined, tail_call_mode),
ConvertReceiverMode::kNotNullOrUndefined),
RelocInfo::CODE_TARGET);
// 3. Call to something that is not callable.

127
src/builtins/arm64/builtins-arm64.cc
View File

@ -1329,7 +1329,7 @@ static void Generate_InterpreterPushArgs(MacroAssembler* masm,
// static
void Builtins::Generate_InterpreterPushArgsThenCallImpl(
MacroAssembler* masm, ConvertReceiverMode receiver_mode,
TailCallMode tail_call_mode, InterpreterPushArgsMode mode) {
InterpreterPushArgsMode mode) {
// ----------- S t a t e -------------
// -- x0 : the number of arguments (not including the receiver)
// -- x2 : the address of the first argument to be pushed. Subsequent
@ -1361,15 +1361,14 @@ void Builtins::Generate_InterpreterPushArgsThenCallImpl(
// Call the target.
if (mode == InterpreterPushArgsMode::kJSFunction) {
__ Jump(masm->isolate()->builtins()->CallFunction(ConvertReceiverMode::kAny,
tail_call_mode),
__ Jump(
masm->isolate()->builtins()->CallFunction(ConvertReceiverMode::kAny),
RelocInfo::CODE_TARGET);
} else if (mode == InterpreterPushArgsMode::kWithFinalSpread) {
__ Jump(masm->isolate()->builtins()->CallWithSpread(),
RelocInfo::CODE_TARGET);
} else {
__ Jump(masm->isolate()->builtins()->Call(ConvertReceiverMode::kAny,
tail_call_mode),
__ Jump(masm->isolate()->builtins()->Call(ConvertReceiverMode::kAny),
RelocInfo::CODE_TARGET);
}
@ -2309,100 +2308,9 @@ void Builtins::Generate_CallOrConstructForwardVarargs(MacroAssembler* masm,
__ Jump(code, RelocInfo::CODE_TARGET);
}
namespace {
// Drops top JavaScript frame and an arguments adaptor frame below it (if
// present) preserving all the arguments prepared for current call.
// Does nothing if debugger is currently active.
// ES6 14.6.3. PrepareForTailCall
//
// Stack structure for the function g() tail calling f():
//
// ------- Caller frame: -------
// | ...
// | g()'s arg M
// | ...
// | g()'s arg 1
// | g()'s receiver arg
// | g()'s caller pc
// ------- g()'s frame: -------
// | g()'s caller fp <- fp
// | g()'s context
// | function pointer: g
// | -------------------------
// | ...
// | ...
// | f()'s arg N
// | ...
// | f()'s arg 1
// | f()'s receiver arg <- sp (f()'s caller pc is not on the stack yet!)
// ----------------------
//
void PrepareForTailCall(MacroAssembler* masm, Register args_reg,
Register scratch1, Register scratch2,
Register scratch3) {
DCHECK(!AreAliased(args_reg, scratch1, scratch2, scratch3));
Comment cmnt(masm, "[ PrepareForTailCall");
// Prepare for tail call only if ES2015 tail call elimination is enabled.
Label done;
ExternalReference is_tail_call_elimination_enabled =
ExternalReference::is_tail_call_elimination_enabled_address(
masm->isolate());
__ Mov(scratch1, Operand(is_tail_call_elimination_enabled));
__ Ldrb(scratch1, MemOperand(scratch1));
__ Cmp(scratch1, Operand(0));
__ B(eq, &done);
// Drop possible interpreter handler/stub frame.
{
Label no_interpreter_frame;
__ Ldr(scratch3,
MemOperand(fp, CommonFrameConstants::kContextOrFrameTypeOffset));
__ Cmp(scratch3, Operand(StackFrame::TypeToMarker(StackFrame::STUB)));
__ B(ne, &no_interpreter_frame);
__ Ldr(fp, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
__ bind(&no_interpreter_frame);
}
// Check if next frame is an arguments adaptor frame.
Register caller_args_count_reg = scratch1;
Label no_arguments_adaptor, formal_parameter_count_loaded;
__ Ldr(scratch2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
__ Ldr(scratch3,
MemOperand(scratch2, CommonFrameConstants::kContextOrFrameTypeOffset));
__ Cmp(scratch3,
Operand(StackFrame::TypeToMarker(StackFrame::ARGUMENTS_ADAPTOR)));
__ B(ne, &no_arguments_adaptor);
// Drop current frame and load arguments count from arguments adaptor frame.
__ mov(fp, scratch2);
__ Ldr(caller_args_count_reg,
MemOperand(fp, ArgumentsAdaptorFrameConstants::kLengthOffset));
__ SmiUntag(caller_args_count_reg);
__ B(&formal_parameter_count_loaded);
__ bind(&no_arguments_adaptor);
// Load caller's formal parameter count
__ Ldr(scratch1, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
__ Ldr(scratch1,
FieldMemOperand(scratch1, JSFunction::kSharedFunctionInfoOffset));
__ Ldrsw(caller_args_count_reg,
FieldMemOperand(scratch1,
SharedFunctionInfo::kFormalParameterCountOffset));
__ bind(&formal_parameter_count_loaded);
ParameterCount callee_args_count(args_reg);
__ PrepareForTailCall(callee_args_count, caller_args_count_reg, scratch2,
scratch3);
__ bind(&done);
}
} // namespace
// static
void Builtins::Generate_CallFunction(MacroAssembler* masm,
ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
ConvertReceiverMode mode) {
ASM_LOCATION("Builtins::Generate_CallFunction");
// ----------- S t a t e -------------
// -- x0 : the number of arguments (not including the receiver)
@ -2489,10 +2397,6 @@ void Builtins::Generate_CallFunction(MacroAssembler* masm,
// -- cp : the function context.
// -----------------------------------
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, x0, x3, x4, x5);
}
__ Ldrsw(
x2, FieldMemOperand(x2, SharedFunctionInfo::kFormalParameterCountOffset));
ParameterCount actual(x0);
@ -2587,18 +2491,13 @@ void Generate_PushBoundArguments(MacroAssembler* masm) {
} // namespace
// static
void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
TailCallMode tail_call_mode) {
void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm) {
// ----------- S t a t e -------------
// -- x0 : the number of arguments (not including the receiver)
// -- x1 : the function to call (checked to be a JSBoundFunction)
// -----------------------------------
__ AssertBoundFunction(x1);
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, x0, x3, x4, x5);
}
// Patch the receiver to [[BoundThis]].
__ Ldr(x10, FieldMemOperand(x1, JSBoundFunction::kBoundThisOffset));
__ Poke(x10, Operand(x0, LSL, kPointerSizeLog2));
@ -2616,8 +2515,7 @@ void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
}
// static
void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode) {
// ----------- S t a t e -------------
// -- x0 : the number of arguments (not including the receiver)
// -- x1 : the target to call (can be any Object).
@ -2627,10 +2525,10 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
__ JumpIfSmi(x1, &non_callable);
__ Bind(&non_smi);
__ CompareObjectType(x1, x4, x5, JS_FUNCTION_TYPE);
__ Jump(masm->isolate()->builtins()->CallFunction(mode, tail_call_mode),
__ Jump(masm->isolate()->builtins()->CallFunction(mode),
RelocInfo::CODE_TARGET, eq);
__ Cmp(x5, JS_BOUND_FUNCTION_TYPE);
__ Jump(masm->isolate()->builtins()->CallBoundFunction(tail_call_mode),
__ Jump(masm->isolate()->builtins()->CallBoundFunction(),
RelocInfo::CODE_TARGET, eq);
// Check if target has a [[Call]] internal method.
@ -2640,11 +2538,6 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
__ Cmp(x5, JS_PROXY_TYPE);
__ B(ne, &non_function);
// 0. Prepare for tail call if necessary.
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, x0, x3, x4, x5);
}
// 1. Runtime fallback for Proxy [[Call]].
__ Push(x1);
// Increase the arguments size to include the pushed function and the
@ -2662,7 +2555,7 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
// Let the "call_as_function_delegate" take care of the rest.
__ LoadNativeContextSlot(Context::CALL_AS_FUNCTION_DELEGATE_INDEX, x1);
__ Jump(masm->isolate()->builtins()->CallFunction(
ConvertReceiverMode::kNotNullOrUndefined, tail_call_mode),
ConvertReceiverMode::kNotNullOrUndefined),
RelocInfo::CODE_TARGET);
// 3. Call to something that is not callable.

55
src/builtins/builtins-call-gen.cc
View File

@ -15,74 +15,33 @@ namespace internal {
void Builtins::Generate_CallFunction_ReceiverIsNullOrUndefined(
MacroAssembler* masm) {
Generate_CallFunction(masm, ConvertReceiverMode::kNullOrUndefined,
TailCallMode::kDisallow);
Generate_CallFunction(masm, ConvertReceiverMode::kNullOrUndefined);
}
void Builtins::Generate_CallFunction_ReceiverIsNotNullOrUndefined(
MacroAssembler* masm) {
Generate_CallFunction(masm, ConvertReceiverMode::kNotNullOrUndefined,
TailCallMode::kDisallow);
Generate_CallFunction(masm, ConvertReceiverMode::kNotNullOrUndefined);
}
void Builtins::Generate_CallFunction_ReceiverIsAny(MacroAssembler* masm) {
Generate_CallFunction(masm, ConvertReceiverMode::kAny,
TailCallMode::kDisallow);
}
void Builtins::Generate_TailCallFunction_ReceiverIsNullOrUndefined(
MacroAssembler* masm) {
Generate_CallFunction(masm, ConvertReceiverMode::kNullOrUndefined,
TailCallMode::kAllow);
}
void Builtins::Generate_TailCallFunction_ReceiverIsNotNullOrUndefined(
MacroAssembler* masm) {
Generate_CallFunction(masm, ConvertReceiverMode::kNotNullOrUndefined,
TailCallMode::kAllow);
}
void Builtins::Generate_TailCallFunction_ReceiverIsAny(MacroAssembler* masm) {
Generate_CallFunction(masm, ConvertReceiverMode::kAny, TailCallMode::kAllow);
Generate_CallFunction(masm, ConvertReceiverMode::kAny);
}
void Builtins::Generate_CallBoundFunction(MacroAssembler* masm) {
Generate_CallBoundFunctionImpl(masm, TailCallMode::kDisallow);
}
void Builtins::Generate_TailCallBoundFunction(MacroAssembler* masm) {
Generate_CallBoundFunctionImpl(masm, TailCallMode::kAllow);
Generate_CallBoundFunctionImpl(masm);
}
void Builtins::Generate_Call_ReceiverIsNullOrUndefined(MacroAssembler* masm) {
Generate_Call(masm, ConvertReceiverMode::kNullOrUndefined,
TailCallMode::kDisallow);
Generate_Call(masm, ConvertReceiverMode::kNullOrUndefined);
}
void Builtins::Generate_Call_ReceiverIsNotNullOrUndefined(
MacroAssembler* masm) {
Generate_Call(masm, ConvertReceiverMode::kNotNullOrUndefined,
TailCallMode::kDisallow);
Generate_Call(masm, ConvertReceiverMode::kNotNullOrUndefined);
}
void Builtins::Generate_Call_ReceiverIsAny(MacroAssembler* masm) {
Generate_Call(masm, ConvertReceiverMode::kAny, TailCallMode::kDisallow);
}
void Builtins::Generate_TailCall_ReceiverIsNullOrUndefined(
MacroAssembler* masm) {
Generate_Call(masm, ConvertReceiverMode::kNullOrUndefined,
TailCallMode::kAllow);
}
void Builtins::Generate_TailCall_ReceiverIsNotNullOrUndefined(
MacroAssembler* masm) {
Generate_Call(masm, ConvertReceiverMode::kNotNullOrUndefined,
TailCallMode::kAllow);
}
void Builtins::Generate_TailCall_ReceiverIsAny(MacroAssembler* masm) {
Generate_Call(masm, ConvertReceiverMode::kAny, TailCallMode::kAllow);
Generate_Call(masm, ConvertReceiverMode::kAny);
}
void Builtins::Generate_CallVarargs(MacroAssembler* masm) {

44
src/builtins/builtins-call.cc
View File

@ -11,10 +11,7 @@
namespace v8 {
namespace internal {
Handle<Code> Builtins::CallFunction(ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
switch (tail_call_mode) {
case TailCallMode::kDisallow:
Handle<Code> Builtins::CallFunction(ConvertReceiverMode mode) {
switch (mode) {
case ConvertReceiverMode::kNullOrUndefined:
return CallFunction_ReceiverIsNullOrUndefined();
@ -23,25 +20,10 @@ Handle<Code> Builtins::CallFunction(ConvertReceiverMode mode,
case ConvertReceiverMode::kAny:
return CallFunction_ReceiverIsAny();
}
break;
case TailCallMode::kAllow:
switch (mode) {
case ConvertReceiverMode::kNullOrUndefined:
return TailCallFunction_ReceiverIsNullOrUndefined();
case ConvertReceiverMode::kNotNullOrUndefined:
return TailCallFunction_ReceiverIsNotNullOrUndefined();
case ConvertReceiverMode::kAny:
return TailCallFunction_ReceiverIsAny();
}
break;
}
UNREACHABLE();
}
Handle<Code> Builtins::Call(ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
switch (tail_call_mode) {
case TailCallMode::kDisallow:
Handle<Code> Builtins::Call(ConvertReceiverMode mode) {
switch (mode) {
case ConvertReceiverMode::kNullOrUndefined:
return Call_ReceiverIsNullOrUndefined();
@ -50,28 +32,6 @@ Handle<Code> Builtins::Call(ConvertReceiverMode mode,
case ConvertReceiverMode::kAny:
return Call_ReceiverIsAny();
}
break;
case TailCallMode::kAllow:
switch (mode) {
case ConvertReceiverMode::kNullOrUndefined:
return TailCall_ReceiverIsNullOrUndefined();
case ConvertReceiverMode::kNotNullOrUndefined:
return TailCall_ReceiverIsNotNullOrUndefined();
case ConvertReceiverMode::kAny:
return TailCall_ReceiverIsAny();
}
break;
}
UNREACHABLE();
}
Handle<Code> Builtins::CallBoundFunction(TailCallMode tail_call_mode) {
switch (tail_call_mode) {
case TailCallMode::kDisallow:
return CallBoundFunction();
case TailCallMode::kAllow:
return TailCallBoundFunction();
}
UNREACHABLE();
}

9
src/builtins/builtins-definitions.h
View File

@ -62,19 +62,12 @@ namespace internal {
ASM(CallFunction_ReceiverIsNullOrUndefined) \
ASM(CallFunction_ReceiverIsNotNullOrUndefined) \
ASM(CallFunction_ReceiverIsAny) \
ASM(TailCallFunction_ReceiverIsNullOrUndefined) \
ASM(TailCallFunction_ReceiverIsNotNullOrUndefined) \
ASM(TailCallFunction_ReceiverIsAny) \
/* ES6 section 9.4.1.1 [[Call]] ( thisArgument, argumentsList) */ \
ASM(CallBoundFunction) \
ASM(TailCallBoundFunction) \
/* ES6 section 7.3.12 Call(F, V, [argumentsList]) */ \
ASM(Call_ReceiverIsNullOrUndefined) \
ASM(Call_ReceiverIsNotNullOrUndefined) \
ASM(Call_ReceiverIsAny) \
ASM(TailCall_ReceiverIsNullOrUndefined) \
ASM(TailCall_ReceiverIsNotNullOrUndefined) \
ASM(TailCall_ReceiverIsAny) \
ASM(CallVarargs) \
TFC(CallWithSpread, CallWithSpread, 1) \
TFC(CallWithArrayLike, CallWithArrayLike, 1) \
@ -138,8 +131,6 @@ namespace internal {
ASM(InterpreterPushArgsThenCallFunction) \
ASM(InterpreterPushUndefinedAndArgsThenCallFunction) \
ASM(InterpreterPushArgsThenCallWithFinalSpread) \
ASM(InterpreterPushArgsThenTailCall) \
ASM(InterpreterPushArgsThenTailCallFunction) \
ASM(InterpreterPushArgsThenConstruct) \
ASM(InterpreterPushArgsThenConstructFunction) \
ASM(InterpreterPushArgsThenConstructArray) \

25
src/builtins/builtins-interpreter-gen.cc
View File

@ -11,51 +11,36 @@ namespace internal {
void Builtins::Generate_InterpreterPushArgsThenCall(MacroAssembler* masm) {
return Generate_InterpreterPushArgsThenCallImpl(
masm, ConvertReceiverMode::kAny, TailCallMode::kDisallow,
InterpreterPushArgsMode::kOther);
masm, ConvertReceiverMode::kAny, InterpreterPushArgsMode::kOther);
}
void Builtins::Generate_InterpreterPushArgsThenCallFunction(
MacroAssembler* masm) {
return Generate_InterpreterPushArgsThenCallImpl(
masm, ConvertReceiverMode::kAny, TailCallMode::kDisallow,
InterpreterPushArgsMode::kJSFunction);
masm, ConvertReceiverMode::kAny, InterpreterPushArgsMode::kJSFunction);
}
void Builtins::Generate_InterpreterPushUndefinedAndArgsThenCall(
MacroAssembler* masm) {
return Generate_InterpreterPushArgsThenCallImpl(
masm, ConvertReceiverMode::kNullOrUndefined, TailCallMode::kDisallow,
masm, ConvertReceiverMode::kNullOrUndefined,
InterpreterPushArgsMode::kOther);
}
void Builtins::Generate_InterpreterPushUndefinedAndArgsThenCallFunction(
MacroAssembler* masm) {
return Generate_InterpreterPushArgsThenCallImpl(
masm, ConvertReceiverMode::kNullOrUndefined, TailCallMode::kDisallow,
masm, ConvertReceiverMode::kNullOrUndefined,
InterpreterPushArgsMode::kJSFunction);
}
void Builtins::Generate_InterpreterPushArgsThenCallWithFinalSpread(
MacroAssembler* masm) {
return Generate_InterpreterPushArgsThenCallImpl(
masm, ConvertReceiverMode::kAny, TailCallMode::kDisallow,
masm, ConvertReceiverMode::kAny,
InterpreterPushArgsMode::kWithFinalSpread);
}
void Builtins::Generate_InterpreterPushArgsThenTailCall(MacroAssembler* masm) {
return Generate_InterpreterPushArgsThenCallImpl(
masm, ConvertReceiverMode::kAny, TailCallMode::kAllow,
InterpreterPushArgsMode::kOther);
}
void Builtins::Generate_InterpreterPushArgsThenTailCallFunction(
MacroAssembler* masm) {
return Generate_InterpreterPushArgsThenCallImpl(
masm, ConvertReceiverMode::kAny, TailCallMode::kAllow,
InterpreterPushArgsMode::kJSFunction);
}
void Builtins::Generate_InterpreterPushArgsThenConstruct(MacroAssembler* masm) {
return Generate_InterpreterPushArgsThenConstructImpl(
masm, InterpreterPushArgsMode::kOther);

14
src/builtins/builtins-interpreter.cc
View File

@ -12,11 +12,9 @@ namespace v8 {
namespace internal {
Handle<Code> Builtins::InterpreterPushArgsThenCall(
ConvertReceiverMode receiver_mode, TailCallMode tail_call_mode,
InterpreterPushArgsMode mode) {
ConvertReceiverMode receiver_mode, InterpreterPushArgsMode mode) {
switch (mode) {
case InterpreterPushArgsMode::kJSFunction:
if (tail_call_mode == TailCallMode::kDisallow) {
switch (receiver_mode) {
case ConvertReceiverMode::kNullOrUndefined:
return InterpreterPushUndefinedAndArgsThenCallFunction();
@ -24,15 +22,9 @@ Handle<Code> Builtins::InterpreterPushArgsThenCall(
case ConvertReceiverMode::kAny:
return InterpreterPushArgsThenCallFunction();
}
} else {
CHECK_EQ(receiver_mode, ConvertReceiverMode::kAny);
return InterpreterPushArgsThenTailCallFunction();
}
case InterpreterPushArgsMode::kWithFinalSpread:
CHECK(tail_call_mode == TailCallMode::kDisallow);
return InterpreterPushArgsThenCallWithFinalSpread();
case InterpreterPushArgsMode::kOther:
if (tail_call_mode == TailCallMode::kDisallow) {
switch (receiver_mode) {
case ConvertReceiverMode::kNullOrUndefined:
return InterpreterPushUndefinedAndArgsThenCall();
@ -40,10 +32,6 @@ Handle<Code> Builtins::InterpreterPushArgsThenCall(
case ConvertReceiverMode::kAny:
return InterpreterPushArgsThenCall();
}
} else {
CHECK_EQ(receiver_mode, ConvertReceiverMode::kAny);
return InterpreterPushArgsThenTailCall();
}
}
UNREACHABLE();
}

20
src/builtins/builtins.h
View File

@ -53,17 +53,12 @@ class Builtins {
#undef DECLARE_BUILTIN_ACCESSOR
// Convenience wrappers.
Handle<Code> CallFunction(
ConvertReceiverMode = ConvertReceiverMode::kAny,
TailCallMode tail_call_mode = TailCallMode::kDisallow);
Handle<Code> Call(ConvertReceiverMode = ConvertReceiverMode::kAny,
TailCallMode tail_call_mode = TailCallMode::kDisallow);
Handle<Code> CallBoundFunction(TailCallMode tail_call_mode);
Handle<Code> CallFunction(ConvertReceiverMode = ConvertReceiverMode::kAny);
Handle<Code> Call(ConvertReceiverMode = ConvertReceiverMode::kAny);
Handle<Code> NonPrimitiveToPrimitive(
ToPrimitiveHint hint = ToPrimitiveHint::kDefault);
Handle<Code> OrdinaryToPrimitive(OrdinaryToPrimitiveHint hint);
Handle<Code> InterpreterPushArgsThenCall(ConvertReceiverMode receiver_mode,
TailCallMode tail_call_mode,
InterpreterPushArgsMode mode);
Handle<Code> InterpreterPushArgsThenConstruct(InterpreterPushArgsMode mode);
Handle<Code> NewFunctionContext(ScopeType scope_type);
@ -123,14 +118,11 @@ class Builtins {
Builtins();
static void Generate_CallFunction(MacroAssembler* masm,
ConvertReceiverMode mode,
TailCallMode tail_call_mode);
ConvertReceiverMode mode);
static void Generate_CallBoundFunctionImpl(MacroAssembler* masm,
TailCallMode tail_call_mode);
static void Generate_CallBoundFunctionImpl(MacroAssembler* masm);
static void Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
TailCallMode tail_call_mode);
static void Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode);
static void Generate_CallOrConstructVarargs(MacroAssembler* masm,
Handle<Code> code);
@ -139,7 +131,7 @@ class Builtins {
static void Generate_InterpreterPushArgsThenCallImpl(
MacroAssembler* masm, ConvertReceiverMode receiver_mode,
TailCallMode tail_call_mode, InterpreterPushArgsMode mode);
InterpreterPushArgsMode mode);
static void Generate_InterpreterPushArgsThenConstructImpl(
MacroAssembler* masm, InterpreterPushArgsMode mode);

128
src/builtins/ia32/builtins-ia32.cc
View File

@ -978,7 +978,7 @@ static void Generate_InterpreterPushArgs(MacroAssembler* masm,
// static
void Builtins::Generate_InterpreterPushArgsThenCallImpl(
MacroAssembler* masm, ConvertReceiverMode receiver_mode,
TailCallMode tail_call_mode, InterpreterPushArgsMode mode) {
InterpreterPushArgsMode mode) {
// ----------- S t a t e -------------
// -- eax : the number of arguments (not including the receiver)
// -- ebx : the address of the first argument to be pushed. Subsequent
@ -1022,15 +1022,14 @@ void Builtins::Generate_InterpreterPushArgsThenCallImpl(
__ Push(edx); // Re-push return address.
if (mode == InterpreterPushArgsMode::kJSFunction) {
__ Jump(masm->isolate()->builtins()->CallFunction(ConvertReceiverMode::kAny,
tail_call_mode),
__ Jump(
masm->isolate()->builtins()->CallFunction(ConvertReceiverMode::kAny),
RelocInfo::CODE_TARGET);
} else if (mode == InterpreterPushArgsMode::kWithFinalSpread) {
__ Jump(masm->isolate()->builtins()->CallWithSpread(),
RelocInfo::CODE_TARGET);
} else {
__ Jump(masm->isolate()->builtins()->Call(ConvertReceiverMode::kAny,
tail_call_mode),
__ Jump(masm->isolate()->builtins()->Call(ConvertReceiverMode::kAny),
RelocInfo::CODE_TARGET);
}
@ -2381,99 +2380,9 @@ void Builtins::Generate_CallOrConstructForwardVarargs(MacroAssembler* masm,
__ Jump(code, RelocInfo::CODE_TARGET);
}
namespace {
// Drops top JavaScript frame and an arguments adaptor frame below it (if
// present) preserving all the arguments prepared for current call.
// Does nothing if debugger is currently active.
// ES6 14.6.3. PrepareForTailCall
//
// Stack structure for the function g() tail calling f():
//
// ------- Caller frame: -------
// | ...
// | g()'s arg M
// | ...
// | g()'s arg 1
// | g()'s receiver arg
// | g()'s caller pc
// ------- g()'s frame: -------
// | g()'s caller fp <- fp
// | g()'s context
// | function pointer: g
// | -------------------------
// | ...
// | ...
// | f()'s arg N
// | ...
// | f()'s arg 1
// | f()'s receiver arg
// | f()'s caller pc <- sp
// ----------------------
//
void PrepareForTailCall(MacroAssembler* masm, Register args_reg,
Register scratch1, Register scratch2,
Register scratch3) {
DCHECK(!AreAliased(args_reg, scratch1, scratch2, scratch3));
Comment cmnt(masm, "[ PrepareForTailCall");
// Prepare for tail call only if ES2015 tail call elimination is enabled.
Label done;
ExternalReference is_tail_call_elimination_enabled =
ExternalReference::is_tail_call_elimination_enabled_address(
masm->isolate());
__ movzx_b(scratch1,
Operand::StaticVariable(is_tail_call_elimination_enabled));
__ cmp(scratch1, Immediate(0));
__ j(equal, &done, Label::kNear);
// Drop possible interpreter handler/stub frame.
{
Label no_interpreter_frame;
__ cmp(Operand(ebp, CommonFrameConstants::kContextOrFrameTypeOffset),
Immediate(StackFrame::TypeToMarker(StackFrame::STUB)));
__ j(not_equal, &no_interpreter_frame, Label::kNear);
__ mov(ebp, Operand(ebp, StandardFrameConstants::kCallerFPOffset));
__ bind(&no_interpreter_frame);
}
// Check if next frame is an arguments adaptor frame.
Register caller_args_count_reg = scratch1;
Label no_arguments_adaptor, formal_parameter_count_loaded;
__ mov(scratch2, Operand(ebp, StandardFrameConstants::kCallerFPOffset));
__ cmp(Operand(scratch2, CommonFrameConstants::kContextOrFrameTypeOffset),
Immediate(StackFrame::TypeToMarker(StackFrame::ARGUMENTS_ADAPTOR)));
__ j(not_equal, &no_arguments_adaptor, Label::kNear);
// Drop current frame and load arguments count from arguments adaptor frame.
__ mov(ebp, scratch2);
__ mov(caller_args_count_reg,
Operand(ebp, ArgumentsAdaptorFrameConstants::kLengthOffset));
__ SmiUntag(caller_args_count_reg);
__ jmp(&formal_parameter_count_loaded, Label::kNear);
__ bind(&no_arguments_adaptor);
// Load caller's formal parameter count
__ mov(scratch1, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset));
__ mov(scratch1,
FieldOperand(scratch1, JSFunction::kSharedFunctionInfoOffset));
__ mov(
caller_args_count_reg,
FieldOperand(scratch1, SharedFunctionInfo::kFormalParameterCountOffset));
__ bind(&formal_parameter_count_loaded);
ParameterCount callee_args_count(args_reg);
__ PrepareForTailCall(callee_args_count, caller_args_count_reg, scratch2,
scratch3, ReturnAddressState::kOnStack, 0);
__ bind(&done);
}
} // namespace
// static
void Builtins::Generate_CallFunction(MacroAssembler* masm,
ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
ConvertReceiverMode mode) {
// ----------- S t a t e -------------
// -- eax : the number of arguments (not including the receiver)
// -- edi : the function to call (checked to be a JSFunction)
@ -2562,12 +2471,6 @@ void Builtins::Generate_CallFunction(MacroAssembler* masm,
// -- esi : the function context.
// -----------------------------------
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, eax, ebx, ecx, edx);
// Reload shared function info.
__ mov(edx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
}
__ mov(ebx,
FieldOperand(edx, SharedFunctionInfo::kFormalParameterCountOffset));
ParameterCount actual(eax);
@ -2670,18 +2573,13 @@ void Generate_PushBoundArguments(MacroAssembler* masm) {
} // namespace
// static
void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
TailCallMode tail_call_mode) {
void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm) {
// ----------- S t a t e -------------
// -- eax : the number of arguments (not including the receiver)
// -- edi : the function to call (checked to be a JSBoundFunction)
// -----------------------------------
__ AssertBoundFunction(edi);
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, eax, ebx, ecx, edx);
}
// Patch the receiver to [[BoundThis]].
__ mov(ebx, FieldOperand(edi, JSBoundFunction::kBoundThisOffset));
__ mov(Operand(esp, eax, times_pointer_size, kPointerSize), ebx);
@ -2698,8 +2596,7 @@ void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
}
// static
void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode) {
// ----------- S t a t e -------------
// -- eax : the number of arguments (not including the receiver)
// -- edi : the target to call (can be any Object).
@ -2709,10 +2606,10 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
__ JumpIfSmi(edi, &non_callable);
__ bind(&non_smi);
__ CmpObjectType(edi, JS_FUNCTION_TYPE, ecx);
__ j(equal, masm->isolate()->builtins()->CallFunction(mode, tail_call_mode),
__ j(equal, masm->isolate()->builtins()->CallFunction(mode),
RelocInfo::CODE_TARGET);
__ CmpInstanceType(ecx, JS_BOUND_FUNCTION_TYPE);
__ j(equal, masm->isolate()->builtins()->CallBoundFunction(tail_call_mode),
__ j(equal, masm->isolate()->builtins()->CallBoundFunction(),
RelocInfo::CODE_TARGET);
// Check if target has a [[Call]] internal method.
@ -2723,11 +2620,6 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
__ CmpInstanceType(ecx, JS_PROXY_TYPE);
__ j(not_equal, &non_function);
// 0. Prepare for tail call if necessary.
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, eax, ebx, ecx, edx);
}
// 1. Runtime fallback for Proxy [[Call]].
__ PopReturnAddressTo(ecx);
__ Push(edi);
@ -2747,7 +2639,7 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
// Let the "call_as_function_delegate" take care of the rest.
__ LoadGlobalFunction(Context::CALL_AS_FUNCTION_DELEGATE_INDEX, edi);
__ Jump(masm->isolate()->builtins()->CallFunction(
ConvertReceiverMode::kNotNullOrUndefined, tail_call_mode),
ConvertReceiverMode::kNotNullOrUndefined),
RelocInfo::CODE_TARGET);
// 3. Call to something that is not callable.

127
src/builtins/mips/builtins-mips.cc
View File

@ -1293,7 +1293,7 @@ static void Generate_InterpreterPushArgs(MacroAssembler* masm,
// static
void Builtins::Generate_InterpreterPushArgsThenCallImpl(
MacroAssembler* masm, ConvertReceiverMode receiver_mode,
TailCallMode tail_call_mode, InterpreterPushArgsMode mode) {
InterpreterPushArgsMode mode) {
// ----------- S t a t e -------------
// -- a0 : the number of arguments (not including the receiver)
// -- a2 : the address of the first argument to be pushed. Subsequent
@ -1323,15 +1323,14 @@ void Builtins::Generate_InterpreterPushArgsThenCallImpl(
// Call the target.
if (mode == InterpreterPushArgsMode::kJSFunction) {
__ Jump(masm->isolate()->builtins()->CallFunction(ConvertReceiverMode::kAny,
tail_call_mode),
__ Jump(
masm->isolate()->builtins()->CallFunction(ConvertReceiverMode::kAny),
RelocInfo::CODE_TARGET);
} else if (mode == InterpreterPushArgsMode::kWithFinalSpread) {
__ Jump(masm->isolate()->builtins()->CallWithSpread(),
RelocInfo::CODE_TARGET);
} else {
__ Jump(masm->isolate()->builtins()->Call(ConvertReceiverMode::kAny,
tail_call_mode),
__ Jump(masm->isolate()->builtins()->Call(ConvertReceiverMode::kAny),
RelocInfo::CODE_TARGET);
}
@ -2212,100 +2211,9 @@ void Builtins::Generate_CallOrConstructForwardVarargs(MacroAssembler* masm,
__ Jump(code, RelocInfo::CODE_TARGET);
}
namespace {
// Drops top JavaScript frame and an arguments adaptor frame below it (if
// present) preserving all the arguments prepared for current call.
// Does nothing if debugger is currently active.
// ES6 14.6.3. PrepareForTailCall
//
// Stack structure for the function g() tail calling f():
//
// ------- Caller frame: -------
// | ...
// | g()'s arg M
// | ...
// | g()'s arg 1
// | g()'s receiver arg
// | g()'s caller pc
// ------- g()'s frame: -------
// | g()'s caller fp <- fp
// | g()'s context
// | function pointer: g
// | -------------------------
// | ...
// | ...
// | f()'s arg N
// | ...
// | f()'s arg 1
// | f()'s receiver arg <- sp (f()'s caller pc is not on the stack yet!)
// ----------------------
//
void PrepareForTailCall(MacroAssembler* masm, Register args_reg,
Register scratch1, Register scratch2,
Register scratch3) {
DCHECK(!AreAliased(args_reg, scratch1, scratch2, scratch3));
Comment cmnt(masm, "[ PrepareForTailCall");
// Prepare for tail call only if ES2015 tail call elimination is enabled.
Label done;
ExternalReference is_tail_call_elimination_enabled =
ExternalReference::is_tail_call_elimination_enabled_address(
masm->isolate());
__ li(at, Operand(is_tail_call_elimination_enabled));
__ lb(scratch1, MemOperand(at));
__ Branch(&done, eq, scratch1, Operand(zero_reg));
// Drop possible interpreter handler/stub frame.
{
Label no_interpreter_frame;
__ lw(scratch3,
MemOperand(fp, CommonFrameConstants::kContextOrFrameTypeOffset));
__ Branch(&no_interpreter_frame, ne, scratch3,
Operand(StackFrame::TypeToMarker(StackFrame::STUB)));
__ lw(fp, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
__ bind(&no_interpreter_frame);
}
// Check if next frame is an arguments adaptor frame.
Register caller_args_count_reg = scratch1;
Label no_arguments_adaptor, formal_parameter_count_loaded;
__ lw(scratch2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
__ lw(scratch3,
MemOperand(scratch2, CommonFrameConstants::kContextOrFrameTypeOffset));
__ Branch(&no_arguments_adaptor, ne, scratch3,
Operand(StackFrame::TypeToMarker(StackFrame::ARGUMENTS_ADAPTOR)));
// Drop current frame and load arguments count from arguments adaptor frame.
__ mov(fp, scratch2);
__ lw(caller_args_count_reg,
MemOperand(fp, ArgumentsAdaptorFrameConstants::kLengthOffset));
__ SmiUntag(caller_args_count_reg);
__ Branch(&formal_parameter_count_loaded);
__ bind(&no_arguments_adaptor);
// Load caller's formal parameter count
__ lw(scratch1,
MemOperand(fp, ArgumentsAdaptorFrameConstants::kFunctionOffset));
__ lw(scratch1,
FieldMemOperand(scratch1, JSFunction::kSharedFunctionInfoOffset));
__ lw(caller_args_count_reg,
FieldMemOperand(scratch1,
SharedFunctionInfo::kFormalParameterCountOffset));
__ bind(&formal_parameter_count_loaded);
ParameterCount callee_args_count(args_reg);
__ PrepareForTailCall(callee_args_count, caller_args_count_reg, scratch2,
scratch3);
__ bind(&done);
}
} // namespace
// static
void Builtins::Generate_CallFunction(MacroAssembler* masm,
ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
ConvertReceiverMode mode) {
// ----------- S t a t e -------------
// -- a0 : the number of arguments (not including the receiver)
// -- a1 : the function to call (checked to be a JSFunction)
@ -2394,10 +2302,6 @@ void Builtins::Generate_CallFunction(MacroAssembler* masm,
// -- cp : the function context.
// -----------------------------------
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, a0, t0, t1, t2);
}
__ lw(a2,
FieldMemOperand(a2, SharedFunctionInfo::kFormalParameterCountOffset));
ParameterCount actual(a0);
@ -2415,18 +2319,13 @@ void Builtins::Generate_CallFunction(MacroAssembler* masm,
}
// static
void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
TailCallMode tail_call_mode) {
void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm) {
// ----------- S t a t e -------------
// -- a0 : the number of arguments (not including the receiver)
// -- a1 : the function to call (checked to be a JSBoundFunction)
// -----------------------------------
__ AssertBoundFunction(a1);
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, a0, t0, t1, t2);
}
// Patch the receiver to [[BoundThis]].
{
__ lw(at, FieldMemOperand(a1, JSBoundFunction::kBoundThisOffset));
@ -2508,8 +2407,7 @@ void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
}
// static
void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode) {
// ----------- S t a t e -------------
// -- a0 : the number of arguments (not including the receiver)
// -- a1 : the target to call (can be any Object).
@ -2519,9 +2417,9 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
__ JumpIfSmi(a1, &non_callable);
__ bind(&non_smi);
__ GetObjectType(a1, t1, t2);
__ Jump(masm->isolate()->builtins()->CallFunction(mode, tail_call_mode),
__ Jump(masm->isolate()->builtins()->CallFunction(mode),
RelocInfo::CODE_TARGET, eq, t2, Operand(JS_FUNCTION_TYPE));
__ Jump(masm->isolate()->builtins()->CallBoundFunction(tail_call_mode),
__ Jump(masm->isolate()->builtins()->CallBoundFunction(),
RelocInfo::CODE_TARGET, eq, t2, Operand(JS_BOUND_FUNCTION_TYPE));
// Check if target has a [[Call]] internal method.
@ -2531,11 +2429,6 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
__ Branch(&non_function, ne, t2, Operand(JS_PROXY_TYPE));
// 0. Prepare for tail call if necessary.
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, a0, t0, t1, t2);
}
// 1. Runtime fallback for Proxy [[Call]].
__ Push(a1);
// Increase the arguments size to include the pushed function and the
@ -2554,7 +2447,7 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
// Let the "call_as_function_delegate" take care of the rest.
__ LoadNativeContextSlot(Context::CALL_AS_FUNCTION_DELEGATE_INDEX, a1);
__ Jump(masm->isolate()->builtins()->CallFunction(
ConvertReceiverMode::kNotNullOrUndefined, tail_call_mode),
ConvertReceiverMode::kNotNullOrUndefined),
RelocInfo::CODE_TARGET);
// 3. Call to something that is not callable.

126
src/builtins/mips64/builtins-mips64.cc
View File

@ -1294,7 +1294,7 @@ static void Generate_InterpreterPushArgs(MacroAssembler* masm,
// static
void Builtins::Generate_InterpreterPushArgsThenCallImpl(
MacroAssembler* masm, ConvertReceiverMode receiver_mode,
TailCallMode tail_call_mode, InterpreterPushArgsMode mode) {
InterpreterPushArgsMode mode) {
// ----------- S t a t e -------------
// -- a0 : the number of arguments (not including the receiver)
// -- a2 : the address of the first argument to be pushed. Subsequent
@ -1324,15 +1324,14 @@ void Builtins::Generate_InterpreterPushArgsThenCallImpl(
// Call the target.
if (mode == InterpreterPushArgsMode::kJSFunction) {
__ Jump(masm->isolate()->builtins()->CallFunction(ConvertReceiverMode::kAny,
tail_call_mode),
__ Jump(
masm->isolate()->builtins()->CallFunction(ConvertReceiverMode::kAny),
RelocInfo::CODE_TARGET);
} else if (mode == InterpreterPushArgsMode::kWithFinalSpread) {
__ Jump(masm->isolate()->builtins()->CallWithSpread(),
RelocInfo::CODE_TARGET);
} else {
__ Jump(masm->isolate()->builtins()->Call(ConvertReceiverMode::kAny,
tail_call_mode),
__ Jump(masm->isolate()->builtins()->Call(ConvertReceiverMode::kAny),
RelocInfo::CODE_TARGET);
}
@ -2237,99 +2236,9 @@ void Builtins::Generate_CallOrConstructForwardVarargs(MacroAssembler* masm,
__ Jump(code, RelocInfo::CODE_TARGET);
}
namespace {
// Drops top JavaScript frame and an arguments adaptor frame below it (if
// present) preserving all the arguments prepared for current call.
// Does nothing if debugger is currently active.
// ES6 14.6.3. PrepareForTailCall
//
// Stack structure for the function g() tail calling f():
//
// ------- Caller frame: -------
// | ...
// | g()'s arg M
// | ...
// | g()'s arg 1
// | g()'s receiver arg
// | g()'s caller pc
// ------- g()'s frame: -------
// | g()'s caller fp <- fp
// | g()'s context
// | function pointer: g
// | -------------------------
// | ...
// | ...
// | f()'s arg N
// | ...
// | f()'s arg 1
// | f()'s receiver arg <- sp (f()'s caller pc is not on the stack yet!)
// ----------------------
//
void PrepareForTailCall(MacroAssembler* masm, Register args_reg,
Register scratch1, Register scratch2,
Register scratch3) {
DCHECK(!AreAliased(args_reg, scratch1, scratch2, scratch3));
Comment cmnt(masm, "[ PrepareForTailCall");
// Prepare for tail call only if ES2015 tail call elimination is enabled.
Label done;
ExternalReference is_tail_call_elimination_enabled =
ExternalReference::is_tail_call_elimination_enabled_address(
masm->isolate());
__ li(at, Operand(is_tail_call_elimination_enabled));
__ Lb(scratch1, MemOperand(at));
__ Branch(&done, eq, scratch1, Operand(zero_reg));
// Drop possible interpreter handler/stub frame.
{
Label no_interpreter_frame;
__ Ld(scratch3,
MemOperand(fp, CommonFrameConstants::kContextOrFrameTypeOffset));
__ Branch(&no_interpreter_frame, ne, scratch3,
Operand(StackFrame::TypeToMarker(StackFrame::STUB)));
__ Ld(fp, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
__ bind(&no_interpreter_frame);
}
// Check if next frame is an arguments adaptor frame.
Register caller_args_count_reg = scratch1;
Label no_arguments_adaptor, formal_parameter_count_loaded;
__ Ld(scratch2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
__ Ld(scratch3,
MemOperand(scratch2, CommonFrameConstants::kContextOrFrameTypeOffset));
__ Branch(&no_arguments_adaptor, ne, scratch3,
Operand(StackFrame::TypeToMarker(StackFrame::ARGUMENTS_ADAPTOR)));
// Drop current frame and load arguments count from arguments adaptor frame.
__ mov(fp, scratch2);
__ Lw(caller_args_count_reg,
UntagSmiMemOperand(fp, ArgumentsAdaptorFrameConstants::kLengthOffset));
__ Branch(&formal_parameter_count_loaded);
__ bind(&no_arguments_adaptor);
// Load caller's formal parameter count
__ Ld(scratch1,
MemOperand(fp, ArgumentsAdaptorFrameConstants::kFunctionOffset));
__ Ld(scratch1,
FieldMemOperand(scratch1, JSFunction::kSharedFunctionInfoOffset));
__ Lw(caller_args_count_reg,
FieldMemOperand(scratch1,
SharedFunctionInfo::kFormalParameterCountOffset));
__ bind(&formal_parameter_count_loaded);
ParameterCount callee_args_count(args_reg);
__ PrepareForTailCall(callee_args_count, caller_args_count_reg, scratch2,
scratch3);
__ bind(&done);
}
} // namespace
// static
void Builtins::Generate_CallFunction(MacroAssembler* masm,
ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
ConvertReceiverMode mode) {
// ----------- S t a t e -------------
// -- a0 : the number of arguments (not including the receiver)
// -- a1 : the function to call (checked to be a JSFunction)
@ -2418,10 +2327,6 @@ void Builtins::Generate_CallFunction(MacroAssembler* masm,
// -- cp : the function context.
// -----------------------------------
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, a0, t0, t1, t2);
}
__ Lw(a2,
FieldMemOperand(a2, SharedFunctionInfo::kFormalParameterCountOffset));
ParameterCount actual(a0);
@ -2439,18 +2344,13 @@ void Builtins::Generate_CallFunction(MacroAssembler* masm,
}
// static
void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
TailCallMode tail_call_mode) {
void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm) {
// ----------- S t a t e -------------
// -- a0 : the number of arguments (not including the receiver)
// -- a1 : the function to call (checked to be a JSBoundFunction)
// -----------------------------------
__ AssertBoundFunction(a1);
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, a0, t0, t1, t2);
}
// Patch the receiver to [[BoundThis]].
{
__ Ld(at, FieldMemOperand(a1, JSBoundFunction::kBoundThisOffset));
@ -2531,8 +2431,7 @@ void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
}
// static
void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode) {
// ----------- S t a t e -------------
// -- a0 : the number of arguments (not including the receiver)
// -- a1 : the target to call (can be any Object).
@ -2542,9 +2441,9 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
__ JumpIfSmi(a1, &non_callable);
__ bind(&non_smi);
__ GetObjectType(a1, t1, t2);
__ Jump(masm->isolate()->builtins()->CallFunction(mode, tail_call_mode),
__ Jump(masm->isolate()->builtins()->CallFunction(mode),
RelocInfo::CODE_TARGET, eq, t2, Operand(JS_FUNCTION_TYPE));
__ Jump(masm->isolate()->builtins()->CallBoundFunction(tail_call_mode),
__ Jump(masm->isolate()->builtins()->CallBoundFunction(),
RelocInfo::CODE_TARGET, eq, t2, Operand(JS_BOUND_FUNCTION_TYPE));
// Check if target has a [[Call]] internal method.
@ -2554,11 +2453,6 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
__ Branch(&non_function, ne, t2, Operand(JS_PROXY_TYPE));
// 0. Prepare for tail call if necessary.
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, a0, t0, t1, t2);
}
// 1. Runtime fallback for Proxy [[Call]].
__ Push(a1);
// Increase the arguments size to include the pushed function and the
@ -2577,7 +2471,7 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
// Let the "call_as_function_delegate" take care of the rest.
__ LoadNativeContextSlot(Context::CALL_AS_FUNCTION_DELEGATE_INDEX, a1);
__ Jump(masm->isolate()->builtins()->CallFunction(
ConvertReceiverMode::kNotNullOrUndefined, tail_call_mode),
ConvertReceiverMode::kNotNullOrUndefined),
RelocInfo::CODE_TARGET);
// 3. Call to something that is not callable.

123
src/builtins/x64/builtins-x64.cc
View File

@ -1047,7 +1047,7 @@ static void Generate_InterpreterPushArgs(MacroAssembler* masm,
// static
void Builtins::Generate_InterpreterPushArgsThenCallImpl(
MacroAssembler* masm, ConvertReceiverMode receiver_mode,
TailCallMode tail_call_mode, InterpreterPushArgsMode mode) {
InterpreterPushArgsMode mode) {
// ----------- S t a t e -------------
// -- rax : the number of arguments (not including the receiver)
// -- rbx : the address of the first argument to be pushed. Subsequent
@ -1085,14 +1085,13 @@ void Builtins::Generate_InterpreterPushArgsThenCallImpl(
__ PushReturnAddressFrom(kScratchRegister); // Re-push return address.
if (mode == InterpreterPushArgsMode::kJSFunction) {
__ Jump(masm->isolate()->builtins()->CallFunction(receiver_mode,
tail_call_mode),
__ Jump(masm->isolate()->builtins()->CallFunction(receiver_mode),
RelocInfo::CODE_TARGET);
} else if (mode == InterpreterPushArgsMode::kWithFinalSpread) {
__ Jump(masm->isolate()->builtins()->CallWithSpread(),
RelocInfo::CODE_TARGET);
} else {
__ Jump(masm->isolate()->builtins()->Call(receiver_mode, tail_call_mode),
__ Jump(masm->isolate()->builtins()->Call(receiver_mode),
RelocInfo::CODE_TARGET);
}
@ -2467,98 +2466,9 @@ void Builtins::Generate_CallOrConstructForwardVarargs(MacroAssembler* masm,
__ Jump(code, RelocInfo::CODE_TARGET);
}
namespace {
// Drops top JavaScript frame and an arguments adaptor frame below it (if
// present) preserving all the arguments prepared for current call.
// Does nothing if debugger is currently active.
// ES6 14.6.3. PrepareForTailCall
//
// Stack structure for the function g() tail calling f():
//
// ------- Caller frame: -------
// | ...
// | g()'s arg M
// | ...
// | g()'s arg 1
// | g()'s receiver arg
// | g()'s caller pc
// ------- g()'s frame: -------
// | g()'s caller fp <- fp
// | g()'s context
// | function pointer: g
// | -------------------------
// | ...
// | ...
// | f()'s arg N
// | ...
// | f()'s arg 1
// | f()'s receiver arg
// | f()'s caller pc <- sp
// ----------------------
//
void PrepareForTailCall(MacroAssembler* masm, Register args_reg,
Register scratch1, Register scratch2,
Register scratch3) {
DCHECK(!AreAliased(args_reg, scratch1, scratch2, scratch3));
Comment cmnt(masm, "[ PrepareForTailCall");
// Prepare for tail call only if ES2015 tail call elimination is active.
Label done;
ExternalReference is_tail_call_elimination_enabled =
ExternalReference::is_tail_call_elimination_enabled_address(
masm->isolate());
__ Move(kScratchRegister, is_tail_call_elimination_enabled);
__ cmpb(Operand(kScratchRegister, 0), Immediate(0));
__ j(equal, &done);
// Drop possible interpreter handler/stub frame.
{
Label no_interpreter_frame;
__ cmpp(Operand(rbp, CommonFrameConstants::kContextOrFrameTypeOffset),
Immediate(StackFrame::TypeToMarker(StackFrame::STUB)));
__ j(not_equal, &no_interpreter_frame, Label::kNear);
__ movp(rbp, Operand(rbp, StandardFrameConstants::kCallerFPOffset));
__ bind(&no_interpreter_frame);
}
// Check if next frame is an arguments adaptor frame.
Register caller_args_count_reg = scratch1;
Label no_arguments_adaptor, formal_parameter_count_loaded;
__ movp(scratch2, Operand(rbp, StandardFrameConstants::kCallerFPOffset));
__ cmpp(Operand(scratch2, CommonFrameConstants::kContextOrFrameTypeOffset),
Immediate(StackFrame::TypeToMarker(StackFrame::ARGUMENTS_ADAPTOR)));
__ j(not_equal, &no_arguments_adaptor, Label::kNear);
// Drop current frame and load arguments count from arguments adaptor frame.
__ movp(rbp, scratch2);
__ SmiToInteger32(
caller_args_count_reg,
Operand(rbp, ArgumentsAdaptorFrameConstants::kLengthOffset));
__ jmp(&formal_parameter_count_loaded, Label::kNear);
__ bind(&no_arguments_adaptor);
// Load caller's formal parameter count
__ movp(scratch1, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset));
__ movp(scratch1,
FieldOperand(scratch1, JSFunction::kSharedFunctionInfoOffset));
__ movsxlq(
caller_args_count_reg,
FieldOperand(scratch1, SharedFunctionInfo::kFormalParameterCountOffset));
__ bind(&formal_parameter_count_loaded);
ParameterCount callee_args_count(args_reg);
__ PrepareForTailCall(callee_args_count, caller_args_count_reg, scratch2,
scratch3, ReturnAddressState::kOnStack);
__ bind(&done);
}
} // namespace
// static
void Builtins::Generate_CallFunction(MacroAssembler* masm,
ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
ConvertReceiverMode mode) {
// ----------- S t a t e -------------
// -- rax : the number of arguments (not including the receiver)
// -- rdi : the function to call (checked to be a JSFunction)
@ -2654,10 +2564,6 @@ void Builtins::Generate_CallFunction(MacroAssembler* masm,
// -- rsi : the function context.
// -----------------------------------
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, rax, rbx, rcx, r8);
}
__ movsxlq(
rbx, FieldOperand(rdx, SharedFunctionInfo::kFormalParameterCountOffset));
ParameterCount actual(rax);
@ -2760,18 +2666,13 @@ void Generate_PushBoundArguments(MacroAssembler* masm) {
} // namespace
// static
void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
TailCallMode tail_call_mode) {
void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm) {
// ----------- S t a t e -------------
// -- rax : the number of arguments (not including the receiver)
// -- rdi : the function to call (checked to be a JSBoundFunction)
// -----------------------------------
__ AssertBoundFunction(rdi);
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, rax, rbx, rcx, r8);
}
// Patch the receiver to [[BoundThis]].
StackArgumentsAccessor args(rsp, rax);
__ movp(rbx, FieldOperand(rdi, JSBoundFunction::kBoundThisOffset));
@ -2789,8 +2690,7 @@ void Builtins::Generate_CallBoundFunctionImpl(MacroAssembler* masm,
}
// static
void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode) {
// ----------- S t a t e -------------
// -- rax : the number of arguments (not including the receiver)
// -- rdi : the target to call (can be any Object)
@ -2801,10 +2701,10 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
__ JumpIfSmi(rdi, &non_callable);
__ bind(&non_smi);
__ CmpObjectType(rdi, JS_FUNCTION_TYPE, rcx);
__ j(equal, masm->isolate()->builtins()->CallFunction(mode, tail_call_mode),
__ j(equal, masm->isolate()->builtins()->CallFunction(mode),
RelocInfo::CODE_TARGET);
__ CmpInstanceType(rcx, JS_BOUND_FUNCTION_TYPE);
__ j(equal, masm->isolate()->builtins()->CallBoundFunction(tail_call_mode),
__ j(equal, masm->isolate()->builtins()->CallBoundFunction(),
RelocInfo::CODE_TARGET);
// Check if target has a [[Call]] internal method.
@ -2815,11 +2715,6 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
__ CmpInstanceType(rcx, JS_PROXY_TYPE);
__ j(not_equal, &non_function);
// 0. Prepare for tail call if necessary.
if (tail_call_mode == TailCallMode::kAllow) {
PrepareForTailCall(masm, rax, rbx, rcx, r8);
}
// 1. Runtime fallback for Proxy [[Call]].
__ PopReturnAddressTo(kScratchRegister);
__ Push(rdi);
@ -2839,7 +2734,7 @@ void Builtins::Generate_Call(MacroAssembler* masm, ConvertReceiverMode mode,
// Let the "call_as_function_delegate" take care of the rest.
__ LoadNativeContextSlot(Context::CALL_AS_FUNCTION_DELEGATE_INDEX, rdi);
__ Jump(masm->isolate()->builtins()->CallFunction(
ConvertReceiverMode::kNotNullOrUndefined, tail_call_mode),
ConvertReceiverMode::kNotNullOrUndefined),
RelocInfo::CODE_TARGET);
// 3. Call to something that is not callable.

26
src/code-factory.cc
View File

@ -64,17 +64,15 @@ Callable CodeFactory::LoadGlobalICInOptimizedCode(Isolate* isolate,
}
// static
Callable CodeFactory::CallIC(Isolate* isolate, ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
CallICStub stub(isolate, mode, tail_call_mode);
Callable CodeFactory::CallIC(Isolate* isolate, ConvertReceiverMode mode) {
CallICStub stub(isolate, mode);
return make_callable(stub);
}
// static
Callable CodeFactory::CallICTrampoline(Isolate* isolate,
ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
CallICTrampolineStub stub(isolate, mode, tail_call_mode);
ConvertReceiverMode mode) {
CallICTrampolineStub stub(isolate, mode);
return make_callable(stub);
}
@ -305,9 +303,8 @@ Callable CodeFactory::ArgumentAdaptor(Isolate* isolate) {
}
// static
Callable CodeFactory::Call(Isolate* isolate, ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
return Callable(isolate->builtins()->Call(mode, tail_call_mode),
Callable CodeFactory::Call(Isolate* isolate, ConvertReceiverMode mode) {
return Callable(isolate->builtins()->Call(mode),
CallTrampolineDescriptor(isolate));
}
@ -324,9 +321,8 @@ Callable CodeFactory::CallWithSpread(Isolate* isolate) {
}
// static
Callable CodeFactory::CallFunction(Isolate* isolate, ConvertReceiverMode mode,
TailCallMode tail_call_mode) {
return Callable(isolate->builtins()->CallFunction(mode, tail_call_mode),
Callable CodeFactory::CallFunction(Isolate* isolate, ConvertReceiverMode mode) {
return Callable(isolate->builtins()->CallFunction(mode),
CallTrampolineDescriptor(isolate));
}
@ -387,9 +383,9 @@ Callable CodeFactory::ConstructFunctionForwardVarargs(Isolate* isolate) {
// static
Callable CodeFactory::InterpreterPushArgsThenCall(
Isolate* isolate, ConvertReceiverMode receiver_mode,
TailCallMode tail_call_mode, InterpreterPushArgsMode mode) {
return Callable(isolate->builtins()->InterpreterPushArgsThenCall(
receiver_mode, tail_call_mode, mode),
InterpreterPushArgsMode mode) {
return Callable(
isolate->builtins()->InterpreterPushArgsThenCall(receiver_mode, mode),
InterpreterPushArgsThenCallDescriptor(isolate));
}

13
src/code-factory.h
View File

@ -29,11 +29,9 @@ class V8_EXPORT_PRIVATE CodeFactory final {
static Callable LoadGlobalICInOptimizedCode(Isolate* isolate,
TypeofMode typeof_mode);
static Callable CallIC(Isolate* isolate,
ConvertReceiverMode mode = ConvertReceiverMode::kAny,
TailCallMode tail_call_mode = TailCallMode::kDisallow);
ConvertReceiverMode mode = ConvertReceiverMode::kAny);
static Callable CallICTrampoline(
Isolate* isolate, ConvertReceiverMode mode = ConvertReceiverMode::kAny,
TailCallMode tail_call_mode = TailCallMode::kDisallow);
Isolate* isolate, ConvertReceiverMode mode = ConvertReceiverMode::kAny);
static Callable StoreGlobalIC(Isolate* isolate, LanguageMode mode);
static Callable StoreGlobalICInOptimizedCode(Isolate* isolate,
LanguageMode mode);
@ -85,13 +83,11 @@ class V8_EXPORT_PRIVATE CodeFactory final {
static Callable ArgumentAdaptor(Isolate* isolate);
static Callable Call(Isolate* isolate,
ConvertReceiverMode mode = ConvertReceiverMode::kAny,
TailCallMode tail_call_mode = TailCallMode::kDisallow);
ConvertReceiverMode mode = ConvertReceiverMode::kAny);
static Callable CallWithArrayLike(Isolate* isolate);
static Callable CallWithSpread(Isolate* isolate);
static Callable CallFunction(
Isolate* isolate, ConvertReceiverMode mode = ConvertReceiverMode::kAny,
TailCallMode tail_call_mode = TailCallMode::kDisallow);
Isolate* isolate, ConvertReceiverMode mode = ConvertReceiverMode::kAny);
static Callable CallVarargs(Isolate* isolate);
static Callable CallForwardVarargs(Isolate* isolate);
static Callable CallFunctionForwardVarargs(Isolate* isolate);
@ -104,7 +100,6 @@ class V8_EXPORT_PRIVATE CodeFactory final {
static Callable InterpreterPushArgsThenCall(Isolate* isolate,
ConvertReceiverMode receiver_mode,
TailCallMode tail_call_mode,
InterpreterPushArgsMode mode);
static Callable InterpreterPushArgsThenConstruct(
Isolate* isolate, InterpreterPushArgsMode mode);

12
src/code-stubs.cc
View File

@ -572,7 +572,7 @@ TF_STUB(LoadIndexedInterceptorStub, CodeStubAssembler) {
}
void CallICStub::PrintState(std::ostream& os) const { // NOLINT
os << convert_mode() << ", " << tail_call_mode();
os << convert_mode();
}
// TODO(ishell): Move to CallICAssembler.
@ -626,8 +626,8 @@ TF_STUB(CallICStub, CodeStubAssembler) {
BIND(&call_function);
{
// Call using CallFunction builtin.
Callable callable = CodeFactory::CallFunction(
isolate(), stub->convert_mode(), stub->tail_call_mode());
Callable callable =
CodeFactory::CallFunction(isolate(), stub->convert_mode());
TailCallStub(callable, context, target, argc);
}
@ -729,8 +729,7 @@ TF_STUB(CallICStub, CodeStubAssembler) {
{
// Call using call builtin.
Comment("call using Call builtin");
Callable callable_call = CodeFactory::Call(isolate(), stub->convert_mode(),
stub->tail_call_mode());
Callable callable_call = CodeFactory::Call(isolate(), stub->convert_mode());
TailCallStub(callable_call, context, target, argc);
}
}
@ -742,8 +741,7 @@ TF_STUB(CallICTrampolineStub, CodeStubAssembler) {
Node* slot = Parameter(Descriptor::kSlot);
Node* vector = LoadFeedbackVectorForStub();
Callable callable = CodeFactory::CallIC(isolate(), stub->convert_mode(),
stub->tail_call_mode());
Callable callable = CodeFactory::CallIC(isolate(), stub->convert_mode());
TailCallStub(callable, context, target, argc, slot, vector);
}

15
src/code-stubs.h
View File

@ -732,23 +732,17 @@ class MathPowStub: public PlatformCodeStub {
class CallICStub : public TurboFanCodeStub {
public:
CallICStub(Isolate* isolate, ConvertReceiverMode convert_mode,
TailCallMode tail_call_mode)
CallICStub(Isolate* isolate, ConvertReceiverMode convert_mode)
: TurboFanCodeStub(isolate) {
minor_key_ = ConvertModeBits::encode(convert_mode) |
TailCallModeBits::encode(tail_call_mode);
minor_key_ = ConvertModeBits::encode(convert_mode);
}
ConvertReceiverMode convert_mode() const {
return ConvertModeBits::decode(minor_key_);
}
TailCallMode tail_call_mode() const {
return TailCallModeBits::decode(minor_key_);
}
protected:
typedef BitField<ConvertReceiverMode, 0, 2> ConvertModeBits;
typedef BitField<TailCallMode, ConvertModeBits::kNext, 1> TailCallModeBits;
private:
void PrintState(std::ostream& os) const final; // NOLINT
@ -1090,9 +1084,8 @@ class StringCharCodeAtGenerator {
class CallICTrampolineStub : public CallICStub {
public:
CallICTrampolineStub(Isolate* isolate, ConvertReceiverMode convert_mode,
TailCallMode tail_call_mode)
: CallICStub(isolate, convert_mode, tail_call_mode) {}
CallICTrampolineStub(Isolate* isolate, ConvertReceiverMode convert_mode)
: CallICStub(isolate, convert_mode) {}
DEFINE_CALL_INTERFACE_DESCRIPTOR(CallICTrampoline);
DEFINE_TURBOFAN_CODE_STUB(CallICTrampoline, CallICStub);

5
src/compiler/ast-graph-builder.cc
View File

@ -1490,9 +1490,8 @@ void AstGraphBuilder::VisitCall(Call* expr) {
// Create node to perform the function call.
CallFrequency frequency = ComputeCallFrequency(expr->CallFeedbackICSlot());
VectorSlotPair feedback = CreateVectorSlotPair(expr->CallFeedbackICSlot());
const Operator* call =
javascript()->Call(args->length() + 2, frequency, feedback, receiver_hint,
expr->tail_call_mode());
const Operator* call = javascript()->Call(args->length() + 2, frequency,
feedback, receiver_hint);
Node* value = ProcessArguments(call, args->length() + 2);
ast_context()->ProduceValue(expr, value);
}

49
src/compiler/bytecode-graph-builder.cc
View File

@ -1357,8 +1357,7 @@ Node* BytecodeGraphBuilder::ProcessCallArguments(const Operator* call_op,
return ProcessCallArguments(call_op, call_args, 2 + arg_count);
}
void BytecodeGraphBuilder::BuildCall(TailCallMode tail_call_mode,
ConvertReceiverMode receiver_mode,
void BytecodeGraphBuilder::BuildCall(ConvertReceiverMode receiver_mode,
Node* const* args, size_t arg_count,
int slot_id) {
DCHECK_EQ(interpreter::Bytecodes::GetReceiverMode(
@ -1372,8 +1371,8 @@ void BytecodeGraphBuilder::BuildCall(TailCallMode tail_call_mode,
VectorSlotPair feedback = CreateVectorSlotPair(slot_id);
CallFrequency frequency = ComputeCallFrequency(slot_id);
const Operator* op = javascript()->Call(arg_count, frequency, feedback,
receiver_mode, tail_call_mode);
const Operator* op =
javascript()->Call(arg_count, frequency, feedback, receiver_mode);
Node* node = nullptr;
if (Node* simplified = TryBuildSimplifiedCall(
op, args, static_cast<int>(arg_count), feedback.slot())) {
@ -1385,8 +1384,7 @@ void BytecodeGraphBuilder::BuildCall(TailCallMode tail_call_mode,
environment()->BindAccumulator(node, Environment::kAttachFrameState);
}
void BytecodeGraphBuilder::BuildCallVarArgs(TailCallMode tail_call_mode,
ConvertReceiverMode receiver_mode) {
void BytecodeGraphBuilder::BuildCallVarArgs(ConvertReceiverMode receiver_mode) {
DCHECK_EQ(interpreter::Bytecodes::GetReceiverMode(
bytecode_iterator().current_bytecode()),
receiver_mode);
@ -1417,17 +1415,16 @@ void BytecodeGraphBuilder::BuildCallVarArgs(TailCallMode tail_call_mode,
Node* const* call_args =
GetCallArgumentsFromRegister(callee, receiver_node, first_arg, arg_count);
BuildCall(tail_call_mode, receiver_mode, call_args,
static_cast<size_t>(2 + arg_count), slot_id);
BuildCall(receiver_mode, call_args, static_cast<size_t>(2 + arg_count),
slot_id);
}
void BytecodeGraphBuilder::VisitCallAnyReceiver() {
BuildCallVarArgs(TailCallMode::kDisallow, ConvertReceiverMode::kAny);
BuildCallVarArgs(ConvertReceiverMode::kAny);
}
void BytecodeGraphBuilder::VisitCallProperty() {
BuildCallVarArgs(TailCallMode::kDisallow,
ConvertReceiverMode::kNotNullOrUndefined);
BuildCallVarArgs(ConvertReceiverMode::kNotNullOrUndefined);
}
void BytecodeGraphBuilder::VisitCallProperty0() {
@ -1436,8 +1433,8 @@ void BytecodeGraphBuilder::VisitCallProperty0() {
Node* receiver =
environment()->LookupRegister(bytecode_iterator().GetRegisterOperand(1));
int const slot_id = bytecode_iterator().GetIndexOperand(2);
BuildCall(TailCallMode::kDisallow, ConvertReceiverMode::kNotNullOrUndefined,
{callee, receiver}, slot_id);
BuildCall(ConvertReceiverMode::kNotNullOrUndefined, {callee, receiver},
slot_id);
}
void BytecodeGraphBuilder::VisitCallProperty1() {
@ -1448,8 +1445,8 @@ void BytecodeGraphBuilder::VisitCallProperty1() {
Node* arg0 =
environment()->LookupRegister(bytecode_iterator().GetRegisterOperand(2));
int const slot_id = bytecode_iterator().GetIndexOperand(3);
BuildCall(TailCallMode::kDisallow, ConvertReceiverMode::kNotNullOrUndefined,
{callee, receiver, arg0}, slot_id);
BuildCall(ConvertReceiverMode::kNotNullOrUndefined, {callee, receiver, arg0},
slot_id);
}
void BytecodeGraphBuilder::VisitCallProperty2() {
@ -1462,13 +1459,12 @@ void BytecodeGraphBuilder::VisitCallProperty2() {
Node* arg1 =
environment()->LookupRegister(bytecode_iterator().GetRegisterOperand(3));
int const slot_id = bytecode_iterator().GetIndexOperand(4);
BuildCall(TailCallMode::kDisallow, ConvertReceiverMode::kNotNullOrUndefined,
BuildCall(ConvertReceiverMode::kNotNullOrUndefined,
{callee, receiver, arg0, arg1}, slot_id);
}
void BytecodeGraphBuilder::VisitCallUndefinedReceiver() {
BuildCallVarArgs(TailCallMode::kDisallow,
ConvertReceiverMode::kNullOrUndefined);
BuildCallVarArgs(ConvertReceiverMode::kNullOrUndefined);
}
void BytecodeGraphBuilder::VisitCallUndefinedReceiver0() {
@ -1476,8 +1472,7 @@ void BytecodeGraphBuilder::VisitCallUndefinedReceiver0() {
environment()->LookupRegister(bytecode_iterator().GetRegisterOperand(0));
Node* receiver = jsgraph()->UndefinedConstant();
int const slot_id = bytecode_iterator().GetIndexOperand(1);
BuildCall(TailCallMode::kDisallow, ConvertReceiverMode::kNullOrUndefined,
{callee, receiver}, slot_id);
BuildCall(ConvertReceiverMode::kNullOrUndefined, {callee, receiver}, slot_id);
}
void BytecodeGraphBuilder::VisitCallUndefinedReceiver1() {
@ -1487,8 +1482,8 @@ void BytecodeGraphBuilder::VisitCallUndefinedReceiver1() {
Node* arg0 =
environment()->LookupRegister(bytecode_iterator().GetRegisterOperand(1));
int const slot_id = bytecode_iterator().GetIndexOperand(2);
BuildCall(TailCallMode::kDisallow, ConvertReceiverMode::kNullOrUndefined,
{callee, receiver, arg0}, slot_id);
BuildCall(ConvertReceiverMode::kNullOrUndefined, {callee, receiver, arg0},
slot_id);
}
void BytecodeGraphBuilder::VisitCallUndefinedReceiver2() {
@ -1500,7 +1495,7 @@ void BytecodeGraphBuilder::VisitCallUndefinedReceiver2() {
Node* arg1 =
environment()->LookupRegister(bytecode_iterator().GetRegisterOperand(2));
int const slot_id = bytecode_iterator().GetIndexOperand(3);
BuildCall(TailCallMode::kDisallow, ConvertReceiverMode::kNullOrUndefined,
BuildCall(ConvertReceiverMode::kNullOrUndefined,
{callee, receiver, arg0, arg1}, slot_id);
}
@ -1517,14 +1512,6 @@ void BytecodeGraphBuilder::VisitCallWithSpread() {
environment()->BindAccumulator(value, Environment::kAttachFrameState);
}
void BytecodeGraphBuilder::VisitTailCall() {
TailCallMode tail_call_mode =
bytecode_array_->GetIsolate()->is_tail_call_elimination_enabled()
? TailCallMode::kAllow
: TailCallMode::kDisallow;
BuildCallVarArgs(tail_call_mode, ConvertReceiverMode::kAny);
}
void BytecodeGraphBuilder::VisitCallJSRuntime() {
PrepareEagerCheckpoint();
Node* callee =

12
src/compiler/bytecode-graph-builder.h
View File

@ -159,14 +159,12 @@ class BytecodeGraphBuilder {
void BuildLdaLookupSlot(TypeofMode typeof_mode);
void BuildLdaLookupContextSlot(TypeofMode typeof_mode);
void BuildLdaLookupGlobalSlot(TypeofMode typeof_mode);
void BuildCallVarArgs(TailCallMode tail_call_mode,
ConvertReceiverMode receiver_mode);
void BuildCall(TailCallMode tail_call_mode, ConvertReceiverMode receiver_mode,
Node* const* args, size_t arg_count, int slot_id);
void BuildCall(TailCallMode tail_call_mode, ConvertReceiverMode receiver_mode,
void BuildCallVarArgs(ConvertReceiverMode receiver_mode);
void BuildCall(ConvertReceiverMode receiver_mode, Node* const* args,
size_t arg_count, int slot_id);
void BuildCall(ConvertReceiverMode receiver_mode,
std::initializer_list<Node*> args, int slot_id) {
BuildCall(tail_call_mode, receiver_mode, args.begin(), args.size(),
slot_id);
BuildCall(receiver_mode, args.begin(), args.size(), slot_id);
}
void BuildBinaryOp(const Operator* op);
void BuildBinaryOpWithImmediate(const Operator* op);

3
src/compiler/code-generator.cc
View File

@ -806,9 +806,6 @@ void CodeGenerator::BuildTranslationForFrameStateDescriptor(
shared_info_id,
static_cast<unsigned int>(descriptor->parameters_count()));
break;
case FrameStateType::kTailCallerFunction:
translation->BeginTailCallerFrame(shared_info_id);
break;
case FrameStateType::kConstructStub:
DCHECK(descriptor->bailout_id().IsValidForConstructStub());
translation->BeginConstructStubFrame(

3
src/compiler/frame-states.cc
View File

@ -54,9 +54,6 @@ std::ostream& operator<<(std::ostream& os, FrameStateType type) {
case FrameStateType::kArgumentsAdaptor:
os << "ARGUMENTS_ADAPTOR";
break;
case FrameStateType::kTailCallerFunction:
os << "TAIL_CALLER_FRAME";
break;
case FrameStateType::kConstructStub:
os << "CONSTRUCT_STUB";
break;

1
src/compiler/frame-states.h
View File

@ -62,7 +62,6 @@ class OutputFrameStateCombine {
enum class FrameStateType {
kInterpretedFunction, // Represents an InterpretedFrame.
kArgumentsAdaptor, // Represents an ArgumentsAdaptorFrame.
kTailCallerFunction, // Represents a frame removed by tail call elimination.
kConstructStub, // Represents a ConstructStubFrame.
kGetterStub, // Represents a GetterStubFrame.
kSetterStub, // Represents a SetterStubFrame.

4
src/compiler/instruction-selector.cc
View File

@ -765,10 +765,8 @@ void InstructionSelector::InitializeCallBuffer(Node* call, CallBuffer* buffer,
buffer->frame_state_descriptor =
buffer->frame_state_descriptor->outer_state();
while (buffer->frame_state_descriptor != nullptr &&
(buffer->frame_state_descriptor->type() ==
FrameStateType::kArgumentsAdaptor ||
buffer->frame_state_descriptor->type() ==
FrameStateType::kTailCallerFunction)) {
FrameStateType::kArgumentsAdaptor) {
frame_state = NodeProperties::GetFrameStateInput(frame_state);
buffer->frame_state_descriptor =
buffer->frame_state_descriptor->outer_state();

18
src/compiler/js-call-reducer.cc
View File

@ -158,10 +158,6 @@ bool CanBeNullOrUndefined(Node* node) {
Reduction JSCallReducer::ReduceFunctionPrototypeApply(Node* node) {
DCHECK_EQ(IrOpcode::kJSCall, node->opcode());
CallParameters const& p = CallParametersOf(node->op());
// Tail calls to Function.prototype.apply are not properly supported
// down the pipeline, so we disable this optimization completely for
// tail calls (for now).
if (p.tail_call_mode() == TailCallMode::kAllow) return NoChange();
size_t arity = p.arity();
DCHECK_LE(2u, arity);
ConvertReceiverMode convert_mode = ConvertReceiverMode::kAny;
@ -268,8 +264,7 @@ Reduction JSCallReducer::ReduceFunctionPrototypeApply(Node* node) {
// Change {node} to the new {JSCall} operator.
NodeProperties::ChangeOp(
node,
javascript()->Call(arity, p.frequency(), VectorSlotPair(), convert_mode,
p.tail_call_mode()));
javascript()->Call(arity, p.frequency(), VectorSlotPair(), convert_mode));
// Try to further reduce the JSCall {node}.
Reduction const reduction = ReduceJSCall(node);
return reduction.Changed() ? reduction : Changed(node);
@ -305,8 +300,7 @@ Reduction JSCallReducer::ReduceFunctionPrototypeCall(Node* node) {
}
NodeProperties::ChangeOp(
node,
javascript()->Call(arity, p.frequency(), VectorSlotPair(), convert_mode,
p.tail_call_mode()));
javascript()->Call(arity, p.frequency(), VectorSlotPair(), convert_mode));
// Try to further reduce the JSCall {node}.
Reduction const reduction = ReduceJSCall(node);
return reduction.Changed() ? reduction : Changed(node);
@ -1131,8 +1125,7 @@ Reduction JSCallReducer::ReduceCallOrConstructWithArrayLikeOrSpread(
Operator const* op =
(node->opcode() == IrOpcode::kJSCallWithArrayLike ||
node->opcode() == IrOpcode::kJSCallWithSpread)
? javascript()->CallForwardVarargs(arity + 1, start_index,
TailCallMode::kDisallow)
? javascript()->CallForwardVarargs(arity + 1, start_index)
: javascript()->ConstructForwardVarargs(arity + 2, start_index);
NodeProperties::ChangeOp(node, op);
return Changed(node);
@ -1293,9 +1286,8 @@ Reduction JSCallReducer::ReduceJSCall(Node* node) {
arity++;
}
NodeProperties::ChangeOp(
node,
javascript()->Call(arity, p.frequency(), VectorSlotPair(),
convert_mode, p.tail_call_mode()));
node, javascript()->Call(arity, p.frequency(), VectorSlotPair(),
convert_mode));
// Try to further reduce the JSCall {node}.
Reduction const reduction = ReduceJSCall(node);
return reduction.Changed() ? reduction : Changed(node);

6
src/compiler/js-generic-lowering.cc
View File

@ -637,9 +637,6 @@ void JSGenericLowering::LowerJSCallForwardVarargs(Node* node) {
int const arg_count = static_cast<int>(p.arity() - 2);
CallDescriptor::Flags flags = FrameStateFlagForCall(node);
Callable callable = CodeFactory::CallForwardVarargs(isolate());
if (p.tail_call_mode() == TailCallMode::kAllow) {
flags |= CallDescriptor::kSupportsTailCalls;
}
CallDescriptor* desc = Linkage::GetStubCallDescriptor(
isolate(), zone(), callable.descriptor(), arg_count + 1, flags);
Node* stub_code = jsgraph()->HeapConstant(callable.code());
@ -657,9 +654,6 @@ void JSGenericLowering::LowerJSCall(Node* node) {
ConvertReceiverMode const mode = p.convert_mode();
Callable callable = CodeFactory::Call(isolate(), mode);
CallDescriptor::Flags flags = FrameStateFlagForCall(node);
if (p.tail_call_mode() == TailCallMode::kAllow) {
flags |= CallDescriptor::kSupportsTailCalls;
}
CallDescriptor* desc = Linkage::GetStubCallDescriptor(
isolate(), zone(), callable.descriptor(), arg_count + 1, flags);
Node* stub_code = jsgraph()->HeapConstant(callable.code());

44
src/compiler/js-inlining.cc
View File

@ -250,36 +250,6 @@ Node* JSInliner::CreateArtificialFrameState(Node* node, Node* outer_frame_state,
outer_frame_state);
}
Node* JSInliner::CreateTailCallerFrameState(Node* node, Node* frame_state) {
FrameStateInfo const& frame_info = OpParameter<FrameStateInfo>(frame_state);
Handle<SharedFunctionInfo> shared;
frame_info.shared_info().ToHandle(&shared);
Node* function = frame_state->InputAt(kFrameStateFunctionInput);
// If we are inlining a tail call drop caller's frame state and an
// arguments adaptor if it exists.
frame_state = NodeProperties::GetFrameStateInput(frame_state);
if (frame_state->opcode() == IrOpcode::kFrameState) {
FrameStateInfo const& frame_info = OpParameter<FrameStateInfo>(frame_state);
if (frame_info.type() == FrameStateType::kArgumentsAdaptor) {
frame_state = NodeProperties::GetFrameStateInput(frame_state);
}
}
const FrameStateFunctionInfo* state_info =
common()->CreateFrameStateFunctionInfo(
FrameStateType::kTailCallerFunction, 0, 0, shared);
const Operator* op = common()->FrameState(
BailoutId(-1), OutputFrameStateCombine::Ignore(), state_info);
const Operator* op0 = common()->StateValues(0, SparseInputMask::Dense());
Node* node0 = graph()->NewNode(op0);
return graph()->NewNode(op, node0, node0, node0,
jsgraph()->UndefinedConstant(), function,
frame_state);
}
namespace {
// TODO(bmeurer): Unify this with the witness helper functions in the
@ -752,20 +722,6 @@ Reduction JSInliner::ReduceJSCall(Node* node) {
}
}
// If we are inlining a JS call at tail position then we have to pop current
// frame state and its potential arguments adaptor frame state in order to
// make the call stack be consistent with non-inlining case.
// After that we add a tail caller frame state which lets deoptimizer handle
// the case when the outermost function inlines a tail call (it should remove
// potential arguments adaptor frame that belongs to outermost function when
// deopt happens).
if (node->opcode() == IrOpcode::kJSCall) {
const CallParameters& p = CallParametersOf(node->op());
if (p.tail_call_mode() == TailCallMode::kAllow) {
frame_state = CreateTailCallerFrameState(node, frame_state);
}
}
// Insert argument adaptor frame if required. The callees formal parameter
// count (i.e. value outputs of start node minus target, receiver, new target,
// arguments count and context) have to match the number of arguments passed

2
src/compiler/js-inlining.h
View File

@ -62,8 +62,6 @@ class JSInliner final : public AdvancedReducer {
FrameStateType frame_state_type,
Handle<SharedFunctionInfo> shared);
Node* CreateTailCallerFrameState(Node* node, Node* outer_frame_state);
Reduction InlineCall(Node* call, Node* new_target, Node* context,
Node* frame_state, Node* start, Node* end,
Node* exception_target,

19
src/compiler/js-operator.cc
View File

@ -146,9 +146,7 @@ StringConcatParameter const& StringConcatParameterOf(Operator const* op) {
}
std::ostream& operator<<(std::ostream& os, CallParameters const& p) {
os << p.arity() << ", " << p.frequency() << ", " << p.convert_mode() << ", "
<< p.tail_call_mode();
return os;
return os << p.arity() << ", " << p.frequency() << ", " << p.convert_mode();
}
const CallParameters& CallParametersOf(const Operator* op) {
@ -158,8 +156,7 @@ const CallParameters& CallParametersOf(const Operator* op) {
std::ostream& operator<<(std::ostream& os,
CallForwardVarargsParameters const& p) {
return os << p.arity() << ", " << p.start_index() << ", "
<< p.tail_call_mode();
return os << p.arity() << ", " << p.start_index();
}
CallForwardVarargsParameters const& CallForwardVarargsParametersOf(
@ -804,9 +801,9 @@ const Operator* JSOperatorBuilder::ToBoolean(ToBooleanHints hints) {
hints); // parameter
}
const Operator* JSOperatorBuilder::CallForwardVarargs(
size_t arity, uint32_t start_index, TailCallMode tail_call_mode) {
CallForwardVarargsParameters parameters(arity, start_index, tail_call_mode);
const Operator* JSOperatorBuilder::CallForwardVarargs(size_t arity,
uint32_t start_index) {
CallForwardVarargsParameters parameters(arity, start_index);
return new (zone()) Operator1<CallForwardVarargsParameters>( // --
IrOpcode::kJSCallForwardVarargs, Operator::kNoProperties, // opcode
"JSCallForwardVarargs", // name
@ -816,10 +813,8 @@ const Operator* JSOperatorBuilder::CallForwardVarargs(
const Operator* JSOperatorBuilder::Call(size_t arity, CallFrequency frequency,
VectorSlotPair const& feedback,
ConvertReceiverMode convert_mode,
TailCallMode tail_call_mode) {
CallParameters parameters(arity, frequency, feedback, tail_call_mode,
convert_mode);
ConvertReceiverMode convert_mode) {
CallParameters parameters(arity, frequency, feedback, convert_mode);
return new (zone()) Operator1<CallParameters>( // --
IrOpcode::kJSCall, Operator::kNoProperties, // opcode
"JSCall", // name

25
src/compiler/js-operator.h
View File

@ -182,17 +182,12 @@ SpreadWithArityParameter const& SpreadWithArityParameterOf(Operator const*);
// is used as parameter by JSCallForwardVarargs operators.
class CallForwardVarargsParameters final {
public:
CallForwardVarargsParameters(size_t arity, uint32_t start_index,
TailCallMode tail_call_mode)
CallForwardVarargsParameters(size_t arity, uint32_t start_index)
: bit_field_(ArityField::encode(arity) |
StartIndexField::encode(start_index) |
TailCallModeField::encode(tail_call_mode)) {}
StartIndexField::encode(start_index)) {}
size_t arity() const { return ArityField::decode(bit_field_); }
uint32_t start_index() const { return StartIndexField::decode(bit_field_); }
TailCallMode tail_call_mode() const {
return TailCallModeField::decode(bit_field_);
}
bool operator==(CallForwardVarargsParameters const& that) const {
return this->bit_field_ == that.bit_field_;
@ -208,7 +203,6 @@ class CallForwardVarargsParameters final {
typedef BitField<size_t, 0, 15> ArityField;
typedef BitField<uint32_t, 15, 15> StartIndexField;
typedef BitField<TailCallMode, 30, 1> TailCallModeField;
uint32_t const bit_field_;
};
@ -223,11 +217,10 @@ CallForwardVarargsParameters const& CallForwardVarargsParametersOf(
class CallParameters final {
public:
CallParameters(size_t arity, CallFrequency frequency,
VectorSlotPair const& feedback, TailCallMode tail_call_mode,
VectorSlotPair const& feedback,
ConvertReceiverMode convert_mode)
: bit_field_(ArityField::encode(arity) |
ConvertReceiverModeField::encode(convert_mode) |
TailCallModeField::encode(tail_call_mode)),
ConvertReceiverModeField::encode(convert_mode)),
frequency_(frequency),
feedback_(feedback) {}
@ -236,9 +229,6 @@ class CallParameters final {
ConvertReceiverMode convert_mode() const {
return ConvertReceiverModeField::decode(bit_field_);
}
TailCallMode tail_call_mode() const {
return TailCallModeField::decode(bit_field_);
}
VectorSlotPair const& feedback() const { return feedback_; }
bool operator==(CallParameters const& that) const {
@ -255,7 +245,6 @@ class CallParameters final {
typedef BitField<size_t, 0, 29> ArityField;
typedef BitField<ConvertReceiverMode, 29, 2> ConvertReceiverModeField;
typedef BitField<TailCallMode, 31, 1> TailCallModeField;
uint32_t const bit_field_;
CallFrequency const frequency_;
@ -726,13 +715,11 @@ class V8_EXPORT_PRIVATE JSOperatorBuilder final
const Operator* CreateLiteralRegExp(Handle<String> constant_pattern,
int literal_flags, int literal_index);
const Operator* CallForwardVarargs(size_t arity, uint32_t start_index,
TailCallMode tail_call_mode);
const Operator* CallForwardVarargs(size_t arity, uint32_t start_index);
const Operator* Call(
size_t arity, CallFrequency frequency = CallFrequency(),
VectorSlotPair const& feedback = VectorSlotPair(),
ConvertReceiverMode convert_mode = ConvertReceiverMode::kAny,
TailCallMode tail_call_mode = TailCallMode::kDisallow);
ConvertReceiverMode convert_mode = ConvertReceiverMode::kAny);
const Operator* CallWithArrayLike(CallFrequency frequency);
const Operator* CallWithSpread(uint32_t arity);
const Operator* CallRuntime(Runtime::FunctionId id);

17
src/compiler/js-typed-lowering.cc
View File

@ -2163,10 +2163,6 @@ Reduction JSTypedLowering::ReduceJSCallForwardVarargs(Node* node) {
if (target_type->Is(Type::Function())) {
// Compute flags for the call.
CallDescriptor::Flags flags = CallDescriptor::kNeedsFrameState;
if (p.tail_call_mode() == TailCallMode::kAllow) {
flags |= CallDescriptor::kSupportsTailCalls;
}
// Patch {node} to an indirect call via CallFunctionForwardVarargs.
Callable callable = CodeFactory::CallFunctionForwardVarargs(isolate());
node->InsertInput(graph()->zone(), 0,
@ -2235,10 +2231,6 @@ Reduction JSTypedLowering::ReduceJSCall(Node* node) {
// Compute flags for the call.
CallDescriptor::Flags flags = CallDescriptor::kNeedsFrameState;
if (p.tail_call_mode() == TailCallMode::kAllow) {
flags |= CallDescriptor::kSupportsTailCalls;
}
Node* new_target = jsgraph()->UndefinedConstant();
Node* argument_count = jsgraph()->Constant(arity);
if (NeedsArgumentAdaptorFrame(shared, arity)) {
@ -2274,10 +2266,6 @@ Reduction JSTypedLowering::ReduceJSCall(Node* node) {
if (target_type->Is(Type::Function())) {
// Compute flags for the call.
CallDescriptor::Flags flags = CallDescriptor::kNeedsFrameState;
if (p.tail_call_mode() == TailCallMode::kAllow) {
flags |= CallDescriptor::kSupportsTailCalls;
}
// Patch {node} to an indirect call via the CallFunction builtin.
Callable callable = CodeFactory::CallFunction(isolate(), convert_mode);
node->InsertInput(graph()->zone(), 0,
@ -2293,9 +2281,8 @@ Reduction JSTypedLowering::ReduceJSCall(Node* node) {
// Maybe we did at least learn something about the {receiver}.
if (p.convert_mode() != convert_mode) {
NodeProperties::ChangeOp(
node,
javascript()->Call(p.arity(), p.frequency(), p.feedback(), convert_mode,
p.tail_call_mode()));
node, javascript()->Call(p.arity(), p.frequency(), p.feedback(),
convert_mode));
return Changed(node);
}

15
src/debug/debug.cc
View File

@ -190,7 +190,6 @@ int CodeBreakIterator::GetModeMask() {
int mask = 0;
mask |= RelocInfo::ModeMask(RelocInfo::DEBUG_BREAK_SLOT_AT_RETURN);
mask |= RelocInfo::ModeMask(RelocInfo::DEBUG_BREAK_SLOT_AT_CALL);
mask |= RelocInfo::ModeMask(RelocInfo::DEBUG_BREAK_SLOT_AT_TAIL_CALL);
mask |= RelocInfo::ModeMask(RelocInfo::DEBUG_BREAK_SLOT_AT_POSITION);
return mask;
}
@ -225,10 +224,6 @@ DebugBreakType CodeBreakIterator::GetDebugBreakType() {
return DEBUG_BREAK_SLOT_AT_RETURN;
} else if (RelocInfo::IsDebugBreakSlotAtCall(rmode())) {
return DEBUG_BREAK_SLOT_AT_CALL;
} else if (RelocInfo::IsDebugBreakSlotAtTailCall(rmode())) {
return isolate()->is_tail_call_elimination_enabled()
? DEBUG_BREAK_SLOT_AT_TAIL_CALL
: DEBUG_BREAK_SLOT_AT_CALL;
} else if (RelocInfo::IsDebugBreakSlot(rmode())) {
return DEBUG_BREAK_SLOT;
} else {
@ -311,10 +306,6 @@ DebugBreakType BytecodeArrayBreakIterator::GetDebugBreakType() {
return DEBUGGER_STATEMENT;
} else if (bytecode == interpreter::Bytecode::kReturn) {
return DEBUG_BREAK_SLOT_AT_RETURN;
} else if (bytecode == interpreter::Bytecode::kTailCall) {
return isolate()->is_tail_call_elimination_enabled()
? DEBUG_BREAK_SLOT_AT_TAIL_CALL
: DEBUG_BREAK_SLOT_AT_CALL;
} else if (interpreter::Bytecodes::IsCallOrConstruct(bytecode)) {
return DEBUG_BREAK_SLOT_AT_CALL;
} else if (source_position_iterator_.is_statement()) {
@ -552,8 +543,6 @@ void Debug::Break(JavaScriptFrame* frame) {
case StepNext:
// Step next should not break in a deeper frame than target frame.
if (current_frame_count > target_frame_count) return;
// For step-next, a tail call is like a return and should break.
step_break = location.IsTailCall();
// Fall through.
case StepIn: {
FrameSummary summary = FrameSummary::GetTop(frame);
@ -1029,8 +1018,6 @@ void Debug::PrepareStep(StepAction step_action) {
}
UpdateHookOnFunctionCall();
// A step-next at a tail call is a step-out.
if (location.IsTailCall() && step_action == StepNext) step_action = StepOut;
// A step-next in blackboxed function is a step-out.
if (step_action == StepNext && IsBlackboxed(shared)) step_action = StepOut;
@ -1664,7 +1651,7 @@ bool Debug::IsBreakAtReturn(JavaScriptFrame* frame) {
DCHECK(!frame->is_optimized());
Handle<DebugInfo> debug_info(shared->GetDebugInfo());
BreakLocation location = BreakLocation::FromFrame(debug_info, frame);
return location.IsReturn() || location.IsTailCall();
return location.IsReturn();
}
void Debug::ScheduleFrameRestart(StackFrame* frame) {

4
src/debug/debug.h
View File

@ -56,7 +56,6 @@ enum DebugBreakType {
DEBUG_BREAK_SLOT,
DEBUG_BREAK_SLOT_AT_CALL,
DEBUG_BREAK_SLOT_AT_RETURN,
DEBUG_BREAK_SLOT_AT_TAIL_CALL,
};
enum IgnoreBreakMode {
@ -75,9 +74,6 @@ class BreakLocation {
inline bool IsReturn() const { return type_ == DEBUG_BREAK_SLOT_AT_RETURN; }
inline bool IsCall() const { return type_ == DEBUG_BREAK_SLOT_AT_CALL; }
inline bool IsTailCall() const {
return type_ == DEBUG_BREAK_SLOT_AT_TAIL_CALL;
}
inline bool IsDebugBreakSlot() const { return type_ >= DEBUG_BREAK_SLOT; }
inline bool IsDebuggerStatement() const {
return type_ == DEBUGGER_STATEMENT;

100
src/deoptimizer.cc
View File

@ -767,12 +767,6 @@ void Deoptimizer::DoComputeOutputFrames() {
case TranslatedFrame::kArgumentsAdaptor:
DoComputeArgumentsAdaptorFrame(translated_frame, frame_index);
break;
case TranslatedFrame::kTailCallerFunction:
DoComputeTailCallerFrame(translated_frame, frame_index);
// Tail caller frame translations do not produce output frames.
frame_index--;
output_count_--;
break;
case TranslatedFrame::kConstructStub:
DoComputeConstructStubFrame(translated_frame, frame_index);
break;
@ -1206,70 +1200,6 @@ void Deoptimizer::DoComputeArgumentsAdaptorFrame(
}
}
void Deoptimizer::DoComputeTailCallerFrame(TranslatedFrame* translated_frame,
int frame_index) {
SharedFunctionInfo* shared = translated_frame->raw_shared_info();
bool is_bottommost = (0 == frame_index);
// Tail caller frame can't be topmost.
CHECK_NE(output_count_ - 1, frame_index);
if (trace_scope_ != NULL) {
PrintF(trace_scope_->file(), " translating tail caller frame ");
std::unique_ptr<char[]> name = shared->DebugName()->ToCString();
PrintF(trace_scope_->file(), "%s\n", name.get());
}
if (!is_bottommost) return;
// Drop arguments adaptor frame below current frame if it exsits.
Address fp_address = input_->GetFramePointerAddress();
Address adaptor_fp_address =
Memory::Address_at(fp_address + CommonFrameConstants::kCallerFPOffset);
if (StackFrame::TypeToMarker(StackFrame::ARGUMENTS_ADAPTOR) !=
Memory::intptr_at(adaptor_fp_address +
CommonFrameConstants::kContextOrFrameTypeOffset)) {
return;
}
int caller_params_count =
Smi::cast(
Memory::Object_at(adaptor_fp_address +
ArgumentsAdaptorFrameConstants::kLengthOffset))
->value();
int callee_params_count =
function_->shared()->internal_formal_parameter_count();
// Both caller and callee parameters count do not include receiver.
int offset = (caller_params_count - callee_params_count) * kPointerSize;
intptr_t new_stack_fp =
reinterpret_cast<intptr_t>(adaptor_fp_address) + offset;
intptr_t new_caller_frame_top = new_stack_fp +
(callee_params_count + 1) * kPointerSize +
CommonFrameConstants::kFixedFrameSizeAboveFp;
intptr_t adaptor_caller_pc = Memory::intptr_at(
adaptor_fp_address + CommonFrameConstants::kCallerPCOffset);
intptr_t adaptor_caller_fp = Memory::intptr_at(
adaptor_fp_address + CommonFrameConstants::kCallerFPOffset);
if (trace_scope_ != NULL) {
PrintF(trace_scope_->file(),
" dropping caller arguments adaptor frame: offset=%d, "
"fp: 0x%08" V8PRIxPTR " -> 0x%08" V8PRIxPTR
", "
"caller sp: 0x%08" V8PRIxPTR " -> 0x%08" V8PRIxPTR "\n",
offset, stack_fp_, new_stack_fp, caller_frame_top_,
new_caller_frame_top);
}
caller_frame_top_ = new_caller_frame_top;
caller_fp_ = adaptor_caller_fp;
caller_pc_ = adaptor_caller_pc;
}
void Deoptimizer::DoComputeConstructStubFrame(TranslatedFrame* translated_frame,
int frame_index) {
TranslatedFrame::iterator value_iterator = translated_frame->begin();
@ -2219,11 +2149,6 @@ void Translation::BeginArgumentsAdaptorFrame(int literal_id, unsigned height) {
buffer_->Add(height);
}
void Translation::BeginTailCallerFrame(int literal_id) {
buffer_->Add(TAIL_CALLER_FRAME);
buffer_->Add(literal_id);
}
void Translation::BeginInterpretedFrame(BailoutId bytecode_offset,
int literal_id, unsigned height) {
buffer_->Add(INTERPRETED_FRAME);
@ -2354,7 +2279,6 @@ int Translation::NumberOfOperandsFor(Opcode opcode) {
case FLOAT_STACK_SLOT:
case DOUBLE_STACK_SLOT:
case LITERAL:
case TAIL_CALLER_FRAME:
return 1;
case BEGIN:
case ARGUMENTS_ADAPTOR_FRAME:
@ -2912,12 +2836,6 @@ TranslatedFrame TranslatedFrame::ArgumentsAdaptorFrame(
shared_info, height);
}
TranslatedFrame TranslatedFrame::TailCallerFrame(
SharedFunctionInfo* shared_info) {
return TranslatedFrame(kTailCallerFunction, shared_info->GetIsolate(),
shared_info, 0);
}
TranslatedFrame TranslatedFrame::ConstructStubFrame(
BailoutId bailout_id, SharedFunctionInfo* shared_info, int height) {
TranslatedFrame frame(kConstructStub, shared_info->GetIsolate(), shared_info,
@ -2963,9 +2881,6 @@ int TranslatedFrame::GetValueCount() {
case kJavaScriptBuiltinContinuation:
return 1 + height_;
case kTailCallerFunction:
return 1; // Function.
case kInvalid:
UNREACHABLE();
break;
@ -3020,17 +2935,6 @@ TranslatedFrame TranslatedState::CreateNextTranslatedFrame(
return TranslatedFrame::ArgumentsAdaptorFrame(shared_info, height);
}
case Translation::TAIL_CALLER_FRAME: {
SharedFunctionInfo* shared_info =
SharedFunctionInfo::cast(literal_array->get(iterator->Next()));
if (trace_file != nullptr) {
std::unique_ptr<char[]> name = shared_info->DebugName()->ToCString();
PrintF(trace_file, " reading tail caller frame marker %s\n",
name.get());
}
return TranslatedFrame::TailCallerFrame(shared_info);
}
case Translation::CONSTRUCT_STUB_FRAME: {
BailoutId bailout_id = BailoutId(iterator->Next());
SharedFunctionInfo* shared_info =
@ -3235,7 +3139,6 @@ int TranslatedState::CreateNextTranslatedValue(
case Translation::BEGIN:
case Translation::INTERPRETED_FRAME:
case Translation::ARGUMENTS_ADAPTOR_FRAME:
case Translation::TAIL_CALLER_FRAME:
case Translation::CONSTRUCT_STUB_FRAME:
case Translation::GETTER_STUB_FRAME:
case Translation::SETTER_STUB_FRAME:
@ -4159,8 +4062,7 @@ void TranslatedState::StoreMaterializedValuesAndDeopt(JavaScriptFrame* frame) {
if (new_store && value_changed) {
materialized_store->Set(stack_frame_pointer_,
previously_materialized_objects);
CHECK(frames_[0].kind() == TranslatedFrame::kInterpretedFunction ||
frames_[0].kind() == TranslatedFrame::kTailCallerFunction);
CHECK(frames_[0].kind() == TranslatedFrame::kInterpretedFunction);
CHECK_EQ(frame->function(), frames_[0].front().GetRawValue());
Deoptimizer::DeoptimizeFunction(frame->function(), frame->LookupCode());
}

6
src/deoptimizer.h
View File

@ -119,7 +119,6 @@ class TranslatedFrame {
kInterpretedFunction,
kGetter,
kSetter,
kTailCallerFunction,
kArgumentsAdaptor,
kConstructStub,
kBuiltinContinuation,
@ -189,7 +188,6 @@ class TranslatedFrame {
SharedFunctionInfo* shared_info);
static TranslatedFrame ArgumentsAdaptorFrame(SharedFunctionInfo* shared_info,
int height);
static TranslatedFrame TailCallerFrame(SharedFunctionInfo* shared_info);
static TranslatedFrame ConstructStubFrame(BailoutId bailout_id,
SharedFunctionInfo* shared_info,
int height);
@ -515,8 +513,6 @@ class Deoptimizer : public Malloced {
int frame_index, bool goto_catch_handler);
void DoComputeArgumentsAdaptorFrame(TranslatedFrame* translated_frame,
int frame_index);
void DoComputeTailCallerFrame(TranslatedFrame* translated_frame,
int frame_index);
void DoComputeConstructStubFrame(TranslatedFrame* translated_frame,
int frame_index);
void DoComputeAccessorStubFrame(TranslatedFrame* translated_frame,
@ -876,7 +872,6 @@ class TranslationIterator BASE_EMBEDDED {
V(GETTER_STUB_FRAME) \
V(SETTER_STUB_FRAME) \
V(ARGUMENTS_ADAPTOR_FRAME) \
V(TAIL_CALLER_FRAME) \
V(DUPLICATED_OBJECT) \
V(ARGUMENTS_ELEMENTS) \
V(ARGUMENTS_LENGTH) \
@ -920,7 +915,6 @@ class Translation BASE_EMBEDDED {
void BeginInterpretedFrame(BailoutId bytecode_offset, int literal_id,
unsigned height);
void BeginArgumentsAdaptorFrame(int literal_id, unsigned height);
void BeginTailCallerFrame(int literal_id);
void BeginConstructStubFrame(BailoutId bailout_id, int literal_id,
unsigned height);
void BeginBuiltinContinuationFrame(BailoutId bailout_id, int literal_id,

3
src/external-reference-table.cc
View File

@ -289,9 +289,6 @@ void ExternalReferenceTable::AddReferences(Isolate* isolate) {
"Isolate::stress_deopt_count_address()");
Add(ExternalReference::runtime_function_table_address(isolate).address(),
"Runtime::runtime_function_table_address()");
Add(ExternalReference::is_tail_call_elimination_enabled_address(isolate)
.address(),
"Isolate::is_tail_call_elimination_enabled_address()");
Add(ExternalReference::address_of_float_abs_constant().address(),
"float_absolute_constant");
Add(ExternalReference::address_of_float_neg_constant().address(),

1
src/flag-definitions.h
View File

@ -192,7 +192,6 @@ DEFINE_IMPLICATION(es_staging, harmony)
#define HARMONY_INPROGRESS_BASE(V) \
V(harmony_array_prototype_values, "harmony Array.prototype.values") \
V(harmony_function_sent, "harmony function.sent") \
V(harmony_tailcalls, "harmony tail calls") \
V(harmony_sharedarraybuffer, "harmony sharedarraybuffer") \
V(harmony_do_expressions, "harmony do-expressions") \
V(harmony_class_fields, "harmony public fields in class literals") \

14
src/full-codegen/arm/full-codegen-arm.cc
View File

@ -1676,18 +1676,8 @@ void FullCodeGenerator::EmitCall(Call* expr, ConvertReceiverMode mode) {
VisitForStackValue(args->at(i));
}
SetCallPosition(expr, expr->tail_call_mode());
if (expr->tail_call_mode() == TailCallMode::kAllow) {
if (FLAG_trace) {
__ CallRuntime(Runtime::kTraceTailCall);
}
// Update profiling counters before the tail call since we will
// not return to this function.
EmitProfilingCounterHandlingForReturnSequence(true);
}
Handle<Code> code =
CodeFactory::CallICTrampoline(isolate(), mode, expr->tail_call_mode())
.code();
SetCallPosition(expr);
Handle<Code> code = CodeFactory::CallICTrampoline(isolate(), mode).code();
__ mov(r3, Operand(IntFromSlot(expr->CallFeedbackICSlot())));
__ ldr(r1, MemOperand(sp, (arg_count + 1) * kPointerSize));
__ mov(r0, Operand(arg_count));

14
src/full-codegen/arm64/full-codegen-arm64.cc
View File

@ -1633,18 +1633,8 @@ void FullCodeGenerator::EmitCall(Call* expr, ConvertReceiverMode mode) {
VisitForStackValue(args->at(i));
}
SetCallPosition(expr, expr->tail_call_mode());
if (expr->tail_call_mode() == TailCallMode::kAllow) {
if (FLAG_trace) {
__ CallRuntime(Runtime::kTraceTailCall);
}
// Update profiling counters before the tail call since we will
// not return to this function.
EmitProfilingCounterHandlingForReturnSequence(true);
}
Handle<Code> code =
CodeFactory::CallICTrampoline(isolate(), mode, expr->tail_call_mode())
.code();
SetCallPosition(expr);
Handle<Code> code = CodeFactory::CallICTrampoline(isolate(), mode).code();
__ Mov(x3, IntFromSlot(expr->CallFeedbackICSlot()));
__ Peek(x1, (arg_count + 1) * kXRegSize);
__ Mov(x0, arg_count);

12
src/full-codegen/full-codegen.cc
View File

@ -638,16 +638,12 @@ void FullCodeGenerator::SetExpressionAsStatementPosition(Expression* expr) {
}
}
void FullCodeGenerator::SetCallPosition(Expression* expr,
TailCallMode tail_call_mode) {
void FullCodeGenerator::SetCallPosition(Expression* expr) {
if (expr->position() == kNoSourcePosition) return;
RecordPosition(expr->position());
if (info_->is_debug()) {
RelocInfo::Mode mode = (tail_call_mode == TailCallMode::kAllow)
? RelocInfo::DEBUG_BREAK_SLOT_AT_TAIL_CALL
: RelocInfo::DEBUG_BREAK_SLOT_AT_CALL;
// Always emit a debug break slot before a call.
DebugCodegen::GenerateSlot(masm_, mode);
DebugCodegen::GenerateSlot(masm_, RelocInfo::DEBUG_BREAK_SLOT_AT_CALL);
}
}
@ -1257,9 +1253,7 @@ void FullCodeGenerator::VisitThrow(Throw* expr) {
void FullCodeGenerator::VisitCall(Call* expr) {
Comment cmnt(masm_, (expr->tail_call_mode() == TailCallMode::kAllow)
? "[ TailCall"
: "[ Call");
Comment cmnt(masm_, "[ Call");
Expression* callee = expr->expression();
Call::CallType call_type = expr->GetCallType();

3
src/full-codegen/full-codegen.h
View File

@ -495,8 +495,7 @@ class FullCodeGenerator final : public AstVisitor<FullCodeGenerator> {
// This is used in loop headers where we want to break for each iteration.
void SetExpressionAsStatementPosition(Expression* expr);
void SetCallPosition(Expression* expr,
TailCallMode tail_call_mode = TailCallMode::kDisallow);
void SetCallPosition(Expression* expr);
void SetConstructCallPosition(Expression* expr) {
// Currently call and construct calls are treated the same wrt debugging.

14
src/full-codegen/ia32/full-codegen-ia32.cc
View File

@ -1569,18 +1569,8 @@ void FullCodeGenerator::EmitCall(Call* expr, ConvertReceiverMode mode) {
VisitForStackValue(args->at(i));
}
SetCallPosition(expr, expr->tail_call_mode());
if (expr->tail_call_mode() == TailCallMode::kAllow) {
if (FLAG_trace) {
__ CallRuntime(Runtime::kTraceTailCall);
}
// Update profiling counters before the tail call since we will
// not return to this function.
EmitProfilingCounterHandlingForReturnSequence(true);
}
Handle<Code> code =
CodeFactory::CallICTrampoline(isolate(), mode, expr->tail_call_mode())
.code();
SetCallPosition(expr);
Handle<Code> code = CodeFactory::CallICTrampoline(isolate(), mode).code();
__ Move(edx, Immediate(IntFromSlot(expr->CallFeedbackICSlot())));
__ mov(edi, Operand(esp, (arg_count + 1) * kPointerSize));
__ Move(eax, Immediate(arg_count));

14
src/full-codegen/mips/full-codegen-mips.cc
View File

@ -1679,18 +1679,8 @@ void FullCodeGenerator::EmitCall(Call* expr, ConvertReceiverMode mode) {
}
// Record source position of the IC call.
SetCallPosition(expr, expr->tail_call_mode());
if (expr->tail_call_mode() == TailCallMode::kAllow) {
if (FLAG_trace) {
__ CallRuntime(Runtime::kTraceTailCall);
}
// Update profiling counters before the tail call since we will
// not return to this function.
EmitProfilingCounterHandlingForReturnSequence(true);
}
Handle<Code> code =
CodeFactory::CallICTrampoline(isolate(), mode, expr->tail_call_mode())
.code();
SetCallPosition(expr);
Handle<Code> code = CodeFactory::CallICTrampoline(isolate(), mode).code();
__ li(a3, Operand(IntFromSlot(expr->CallFeedbackICSlot())));
__ lw(a1, MemOperand(sp, (arg_count + 1) * kPointerSize));
__ li(a0, Operand(arg_count));

14
src/full-codegen/mips64/full-codegen-mips64.cc
View File

@ -1681,18 +1681,8 @@ void FullCodeGenerator::EmitCall(Call* expr, ConvertReceiverMode mode) {
}
// Record source position of the IC call.
SetCallPosition(expr, expr->tail_call_mode());
if (expr->tail_call_mode() == TailCallMode::kAllow) {
if (FLAG_trace) {
__ CallRuntime(Runtime::kTraceTailCall);
}
// Update profiling counters before the tail call since we will
// not return to this function.
EmitProfilingCounterHandlingForReturnSequence(true);
}
Handle<Code> code =
CodeFactory::CallICTrampoline(isolate(), mode, expr->tail_call_mode())
.code();
SetCallPosition(expr);
Handle<Code> code = CodeFactory::CallICTrampoline(isolate(), mode).code();
__ li(a3, Operand(IntFromSlot(expr->CallFeedbackICSlot())));
__ Ld(a1, MemOperand(sp, (arg_count + 1) * kPointerSize));
__ li(a0, Operand(arg_count));

14
src/full-codegen/x64/full-codegen-x64.cc
View File

@ -1590,18 +1590,8 @@ void FullCodeGenerator::EmitCall(Call* expr, ConvertReceiverMode mode) {
VisitForStackValue(args->at(i));
}
SetCallPosition(expr, expr->tail_call_mode());
if (expr->tail_call_mode() == TailCallMode::kAllow) {
if (FLAG_trace) {
__ CallRuntime(Runtime::kTraceTailCall);
}
// Update profiling counters before the tail call since we will
// not return to this function.
EmitProfilingCounterHandlingForReturnSequence(true);
}
Handle<Code> code =
CodeFactory::CallICTrampoline(isolate(), mode, expr->tail_call_mode())
.code();
SetCallPosition(expr);
Handle<Code> code = CodeFactory::CallICTrampoline(isolate(), mode).code();
__ Set(rdx, IntFromSlot(expr->CallFeedbackICSlot()));
__ movp(rdi, Operand(rsp, (arg_count + 1) * kPointerSize));
__ Set(rax, arg_count);

15
src/globals.h
View File

@ -855,21 +855,6 @@ inline std::ostream& operator<<(std::ostream& os, ConvertReceiverMode mode) {
UNREACHABLE();
}
// Defines whether tail call optimization is allowed.
enum class TailCallMode : unsigned { kAllow, kDisallow };
inline size_t hash_value(TailCallMode mode) { return bit_cast<unsigned>(mode); }
inline std::ostream& operator<<(std::ostream& os, TailCallMode mode) {
switch (mode) {
case TailCallMode::kAllow:
return os << "ALLOW_TAIL_CALLS";
case TailCallMode::kDisallow:
return os << "DISALLOW_TAIL_CALLS";
}
UNREACHABLE();
}
// Valid hints for the abstract operation OrdinaryToPrimitive,
// implemented according to ES6, section 7.1.1.
enum class OrdinaryToPrimitiveHint { kNumber, kString };

7
src/interpreter/bytecode-array-builder.cc
View File

@ -1339,13 +1339,6 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::CallAnyReceiver(Register callable,
return *this;
}
BytecodeArrayBuilder& BytecodeArrayBuilder::TailCall(Register callable,
RegisterList args,
int feedback_slot) {
OutputTailCall(callable, args, args.register_count(), feedback_slot);
return *this;
}
BytecodeArrayBuilder& BytecodeArrayBuilder::CallWithSpread(Register callable,
RegisterList args) {
OutputCallWithSpread(callable, args, args.register_count());

9
src/interpreter/bytecode-generator.cc
View File

@ -3066,7 +3066,6 @@ void BytecodeGenerator::VisitCall(Call* expr) {
RegisterList args = register_allocator()->NewGrowableRegisterList();
bool implicit_undefined_receiver = false;
bool is_tail_call = (expr->tail_call_mode() == TailCallMode::kAllow);
// When a call contains a spread, a Call AST node is only created if there is
// exactly one spread, and it is the last argument.
bool is_spread_call = expr->only_last_arg_is_spread();
@ -3087,7 +3086,7 @@ void BytecodeGenerator::VisitCall(Call* expr) {
}
case Call::GLOBAL_CALL: {
// Receiver is undefined for global calls.
if (!is_tail_call && !is_spread_call) {
if (!is_spread_call) {
implicit_undefined_receiver = true;
} else {
// TODO(leszeks): There's no special bytecode for tail calls or spread
@ -3125,7 +3124,7 @@ void BytecodeGenerator::VisitCall(Call* expr) {
}
case Call::OTHER_CALL: {
// Receiver is undefined for other calls.
if (!is_tail_call && !is_spread_call) {
if (!is_spread_call) {
implicit_undefined_receiver = true;
} else {
// TODO(leszeks): There's no special bytecode for tail calls or spread
@ -3192,12 +3191,8 @@ void BytecodeGenerator::VisitCall(Call* expr) {
int const feedback_slot_index = feedback_index(expr->CallFeedbackICSlot());
if (is_spread_call) {
DCHECK(!is_tail_call);
DCHECK(!implicit_undefined_receiver);
builder()->CallWithSpread(callee, args);
} else if (is_tail_call) {
DCHECK(!implicit_undefined_receiver);
builder()->TailCall(callee, args, feedback_slot_index);
} else if (call_type == Call::NAMED_PROPERTY_CALL ||
call_type == Call::KEYED_PROPERTY_CALL) {
DCHECK(!implicit_undefined_receiver);

4
src/interpreter/bytecodes.h
View File

@ -179,8 +179,6 @@ namespace interpreter {
OperandType::kReg, OperandType::kReg, OperandType::kIdx) \
V(CallWithSpread, AccumulatorUse::kWrite, OperandType::kReg, \
OperandType::kRegList, OperandType::kRegCount) \
V(TailCall, AccumulatorUse::kWrite, OperandType::kReg, \
OperandType::kRegList, OperandType::kRegCount, OperandType::kIdx) \
V(CallRuntime, AccumulatorUse::kWrite, OperandType::kRuntimeId, \
OperandType::kRegList, OperandType::kRegCount) \
V(CallRuntimeForPair, AccumulatorUse::kNone, OperandType::kRuntimeId, \
@ -654,7 +652,6 @@ class V8_EXPORT_PRIVATE Bytecodes final {
bytecode == Bytecode::kCallUndefinedReceiver0 ||
bytecode == Bytecode::kCallUndefinedReceiver1 ||
bytecode == Bytecode::kCallUndefinedReceiver2 ||
bytecode == Bytecode::kTailCall ||
bytecode == Bytecode::kConstruct ||
bytecode == Bytecode::kCallWithSpread ||
bytecode == Bytecode::kConstructWithSpread ||
@ -783,7 +780,6 @@ class V8_EXPORT_PRIVATE Bytecodes final {
case Bytecode::kCallUndefinedReceiver2:
return ConvertReceiverMode::kNullOrUndefined;
case Bytecode::kCallAnyReceiver:
case Bytecode::kTailCall:
case Bytecode::kConstruct:
case Bytecode::kCallWithSpread:
case Bytecode::kConstructWithSpread:

16
src/interpreter/interpreter-assembler.cc
View File

@ -563,7 +563,7 @@ Node* InterpreterAssembler::CallJSWithFeedback(
compiler::Node* function, compiler::Node* context,
compiler::Node* first_arg, compiler::Node* arg_count,
compiler::Node* slot_id, compiler::Node* feedback_vector,
ConvertReceiverMode receiver_mode, TailCallMode tail_call_mode) {
ConvertReceiverMode receiver_mode) {
// Static checks to assert it is safe to examine the type feedback element.
// We don't know that we have a weak cell. We might have a private symbol
// or an AllocationSite, but the memory is safe to examine.
@ -605,8 +605,7 @@ Node* InterpreterAssembler::CallJSWithFeedback(
{
// Call using call function builtin.
Callable callable = CodeFactory::InterpreterPushArgsThenCall(
isolate(), receiver_mode, tail_call_mode,
InterpreterPushArgsMode::kJSFunction);
isolate(), receiver_mode, InterpreterPushArgsMode::kJSFunction);
Node* code_target = HeapConstant(callable.code());
Node* ret_value = CallStub(callable.descriptor(), code_target, context,
arg_count, first_arg, function);
@ -723,8 +722,7 @@ Node* InterpreterAssembler::CallJSWithFeedback(
Comment("invoke using Call builtin");
// Call using call builtin.
Callable callable_call = CodeFactory::InterpreterPushArgsThenCall(
isolate(), receiver_mode, tail_call_mode,
InterpreterPushArgsMode::kOther);
isolate(), receiver_mode, InterpreterPushArgsMode::kOther);
Node* code_target_call = HeapConstant(callable_call.code());
Node* ret_value = CallStub(callable_call.descriptor(), code_target_call,
context, arg_count, first_arg, function);
@ -738,15 +736,13 @@ Node* InterpreterAssembler::CallJSWithFeedback(
Node* InterpreterAssembler::CallJS(Node* function, Node* context,
Node* first_arg, Node* arg_count,
ConvertReceiverMode receiver_mode,
TailCallMode tail_call_mode) {
ConvertReceiverMode receiver_mode) {
DCHECK(Bytecodes::MakesCallAlongCriticalPath(bytecode_));
DCHECK(Bytecodes::IsCallOrConstruct(bytecode_) ||
bytecode_ == Bytecode::kInvokeIntrinsic);
DCHECK_EQ(Bytecodes::GetReceiverMode(bytecode_), receiver_mode);
Callable callable = CodeFactory::InterpreterPushArgsThenCall(
isolate(), receiver_mode, tail_call_mode,
InterpreterPushArgsMode::kOther);
isolate(), receiver_mode, InterpreterPushArgsMode::kOther);
Node* code_target = HeapConstant(callable.code());
return CallStub(callable.descriptor(), code_target, context, arg_count,
@ -758,7 +754,7 @@ Node* InterpreterAssembler::CallJSWithSpread(Node* function, Node* context,
DCHECK(Bytecodes::MakesCallAlongCriticalPath(bytecode_));
DCHECK_EQ(Bytecodes::GetReceiverMode(bytecode_), ConvertReceiverMode::kAny);
Callable callable = CodeFactory::InterpreterPushArgsThenCall(
isolate(), ConvertReceiverMode::kAny, TailCallMode::kDisallow,
isolate(), ConvertReceiverMode::kAny,
InterpreterPushArgsMode::kWithFinalSpread);
Node* code_target = HeapConstant(callable.code());

15
src/interpreter/interpreter-assembler.h
View File

@ -124,19 +124,20 @@ class V8_EXPORT_PRIVATE InterpreterAssembler : public CodeStubAssembler {
// If the |receiver_mode| is kNullOrUndefined, then the receiver is implicitly
// undefined and |first_arg| is the first parameter. Otherwise, |first_arg| is
// the receiver and it is converted according to |receiver_mode|.
compiler::Node* CallJSWithFeedback(
compiler::Node* function, compiler::Node* context,
compiler::Node* first_arg, compiler::Node* arg_count,
compiler::Node* slot_id, compiler::Node* feedback_vector,
ConvertReceiverMode receiver_mode, TailCallMode tail_call_mode);
compiler::Node* CallJSWithFeedback(compiler::Node* function,
compiler::Node* context,
compiler::Node* first_arg,
compiler::Node* arg_count,
compiler::Node* slot_id,
compiler::Node* feedback_vector,
ConvertReceiverMode receiver_mode);
// Call JSFunction or Callable |function| with |arg_count| arguments (not
// including receiver) and the first argument located at |first_arg|, possibly
// including the receiver depending on |receiver_mode|.
compiler::Node* CallJS(compiler::Node* function, compiler::Node* context,
compiler::Node* first_arg, compiler::Node* arg_count,
ConvertReceiverMode receiver_mode,
TailCallMode tail_call_mode);
ConvertReceiverMode receiver_mode);
// Call JSFunction or Callable |function| with |arg_count|
// arguments (not including receiver) and the first argument

24
src/interpreter/interpreter-generator.cc
View File

@ -1749,7 +1749,7 @@ class InterpreterJSCallAssembler : public InterpreterAssembler {
: InterpreterAssembler(state, bytecode, operand_scale) {}
// Generates code to perform a JS call that collects type feedback.
void JSCall(ConvertReceiverMode receiver_mode, TailCallMode tail_call_mode) {
void JSCall(ConvertReceiverMode receiver_mode) {
Node* function_reg = BytecodeOperandReg(0);
Node* function = LoadRegister(function_reg);
Node* first_arg_reg = BytecodeOperandReg(1);
@ -1767,9 +1767,8 @@ class InterpreterJSCallAssembler : public InterpreterAssembler {
Node* slot_id = BytecodeOperandIdx(3);
Node* feedback_vector = LoadFeedbackVector();
Node* context = GetContext();
Node* result =
CallJSWithFeedback(function, context, first_arg, args_count, slot_id,
feedback_vector, receiver_mode, tail_call_mode);
Node* result = CallJSWithFeedback(function, context, first_arg, args_count,
slot_id, feedback_vector, receiver_mode);
SetAccumulator(result);
Dispatch();
}
@ -1832,11 +1831,11 @@ class InterpreterJSCallAssembler : public InterpreterAssembler {
// |arg_count| arguments in subsequent registers. Collect type feedback
// into |feedback_slot_id|
IGNITION_HANDLER(CallAnyReceiver, InterpreterJSCallAssembler) {
JSCall(ConvertReceiverMode::kAny, TailCallMode::kDisallow);
JSCall(ConvertReceiverMode::kAny);
}
IGNITION_HANDLER(CallProperty, InterpreterJSCallAssembler) {
JSCall(ConvertReceiverMode::kNotNullOrUndefined, TailCallMode::kDisallow);
JSCall(ConvertReceiverMode::kNotNullOrUndefined);
}
IGNITION_HANDLER(CallProperty0, InterpreterJSCallAssembler) {
@ -1852,7 +1851,7 @@ IGNITION_HANDLER(CallProperty2, InterpreterJSCallAssembler) {
}
IGNITION_HANDLER(CallUndefinedReceiver, InterpreterJSCallAssembler) {
JSCall(ConvertReceiverMode::kNullOrUndefined, TailCallMode::kDisallow);
JSCall(ConvertReceiverMode::kNullOrUndefined);
}
IGNITION_HANDLER(CallUndefinedReceiver0, InterpreterJSCallAssembler) {
@ -1867,15 +1866,6 @@ IGNITION_HANDLER(CallUndefinedReceiver2, InterpreterJSCallAssembler) {
JSCallN(2, ConvertReceiverMode::kNullOrUndefined);
}
// TailCall <callable> <receiver> <arg_count> <feedback_slot_id>
//
// Tail call a JSfunction or Callable in |callable| with the |receiver| and
// |arg_count| arguments in subsequent registers. Collect type feedback
// into |feedback_slot_id|
IGNITION_HANDLER(TailCall, InterpreterJSCallAssembler) {
JSCall(ConvertReceiverMode::kAny, TailCallMode::kAllow);
}
// CallRuntime <function_id> <first_arg> <arg_count>
//
// Call the runtime function |function_id| with the first argument in
@ -1952,7 +1942,7 @@ IGNITION_HANDLER(CallJSRuntime, InterpreterAssembler) {
// Call the function.
Node* result = CallJS(function, context, first_arg, args_count,
ConvertReceiverMode::kAny, TailCallMode::kDisallow);
ConvertReceiverMode::kAny);
SetAccumulator(result);
Dispatch();
}

2
src/interpreter/interpreter-intrinsics-generator.cc
View File

@ -335,7 +335,7 @@ Node* IntrinsicsGenerator::Call(Node* args_reg, Node* arg_count,
}
Node* result = __ CallJS(function, context, receiver_arg, target_args_count,
ConvertReceiverMode::kAny, TailCallMode::kDisallow);
ConvertReceiverMode::kAny);
return result;
}

9
src/isolate.cc
View File

@ -3646,15 +3646,6 @@ std::string Isolate::GetTurboCfgFileName() {
}
}
void Isolate::SetTailCallEliminationEnabled(bool enabled) {
if (is_tail_call_elimination_enabled_ == enabled) return;
is_tail_call_elimination_enabled_ = enabled;
// TODO(ishell): Introduce DependencyGroup::kTailCallChangedGroup to
// deoptimize only those functions that are affected by the change of this
// flag.
internal::Deoptimizer::DeoptimizeAll(this);
}
// Heap::detached_contexts tracks detached contexts as pairs
// (number of GC since the context was detached, the context).
void Isolate::AddDetachedContext(Handle<Context> context) {

9
src/isolate.h
View File

@ -1174,15 +1174,6 @@ class Isolate {
void RunPromiseHook(PromiseHookType type, Handle<JSPromise> promise,
Handle<Object> parent);
// Support for dynamically disabling tail call elimination.
Address is_tail_call_elimination_enabled_address() {
return reinterpret_cast<Address>(&is_tail_call_elimination_enabled_);
}
bool is_tail_call_elimination_enabled() const {
return is_tail_call_elimination_enabled_;
}
void SetTailCallEliminationEnabled(bool enabled);
void AddDetachedContext(Handle<Context> context);
void CheckDetachedContextsAfterGC();

9
src/objects.cc
View File

@ -14582,15 +14582,6 @@ void DeoptimizationInputData::DeoptimizationInputDataPrint(
break;
}
case Translation::TAIL_CALLER_FRAME: {
int shared_info_id = iterator.Next();
Object* shared_info = LiteralArray()->get(shared_info_id);
os << "{function="
<< Brief(SharedFunctionInfo::cast(shared_info)->DebugName())
<< "}";
break;
}
case Translation::GETTER_STUB_FRAME:
case Translation::SETTER_STUB_FRAME: {
int shared_info_id = iterator.Next();

2
src/parsing/parse-info.cc
View File

@ -160,8 +160,6 @@ void ParseInfo::InitFromIsolate(Isolate* isolate) {
set_hash_seed(isolate->heap()->HashSeed());
set_stack_limit(isolate->stack_guard()->real_climit());
set_unicode_cache(isolate->unicode_cache());
set_tail_call_elimination_enabled(
isolate->is_tail_call_elimination_enabled());
set_runtime_call_stats(isolate->counters()->runtime_call_stats());
set_ast_string_constants(isolate->ast_string_constants());
if (FLAG_block_coverage && isolate->is_block_code_coverage()) {

5
src/parsing/parse-info.h
View File

@ -80,8 +80,6 @@ class V8_EXPORT_PRIVATE ParseInfo : public CompileJobFinishCallback {
set_is_named_expression)
FLAG_ACCESSOR(kDebug, is_debug, set_is_debug)
FLAG_ACCESSOR(kSerializing, will_serialize, set_will_serialize)
FLAG_ACCESSOR(kTailCallEliminationEnabled, is_tail_call_elimination_enabled,
set_tail_call_elimination_enabled)
#undef FLAG_ACCESSOR
@ -280,8 +278,7 @@ class V8_EXPORT_PRIVATE ParseInfo : public CompileJobFinishCallback {
kIsNamedExpression = 1 << 8,
kDebug = 1 << 9,
kSerializing = 1 << 10,
kTailCallEliminationEnabled = 1 << 11,
kAstValueFactoryOwned = 1 << 12,
kAstValueFactoryOwned = 1 << 11,
};
//------------- Inputs to parsing and scope analysis -----------------------

160
src/parsing/parser-base.h
View File

@ -270,7 +270,6 @@ class ParserBase {
default_eager_compile_hint_(FunctionLiteral::kShouldLazyCompile),
function_literal_id_(0),
allow_natives_(false),
allow_tailcalls_(false),
allow_harmony_do_expressions_(false),
allow_harmony_function_sent_(false),
allow_harmony_restrictive_generators_(false),
@ -285,7 +284,6 @@ class ParserBase {
void set_allow_##name(bool allow) { allow_##name##_ = allow; }
ALLOW_ACCESSORS(natives);
ALLOW_ACCESSORS(tailcalls);
ALLOW_ACCESSORS(harmony_do_expressions);
ALLOW_ACCESSORS(harmony_function_sent);
ALLOW_ACCESSORS(harmony_restrictive_generators);
@ -376,56 +374,6 @@ class ParserBase {
Scope* scope;
};
class TailCallExpressionList {
public:
explicit TailCallExpressionList(Zone* zone)
: zone_(zone), expressions_(0, zone), has_explicit_tail_calls_(false) {}
const ZoneList<ExpressionT>& expressions() const { return expressions_; }
const Scanner::Location& location() const { return loc_; }
bool has_explicit_tail_calls() const { return has_explicit_tail_calls_; }
void Swap(TailCallExpressionList& other) {
expressions_.Swap(&other.expressions_);
std::swap(loc_, other.loc_);
std::swap(has_explicit_tail_calls_, other.has_explicit_tail_calls_);
}
void AddImplicitTailCall(ExpressionT expr) {
expressions_.Add(expr, zone_);
}
void Append(const TailCallExpressionList& other) {
if (!has_explicit_tail_calls()) {
loc_ = other.loc_;
has_explicit_tail_calls_ = other.has_explicit_tail_calls_;
}
expressions_.AddAll(other.expressions_, zone_);
}
private:
Zone* zone_;
ZoneList<ExpressionT> expressions_;
Scanner::Location loc_;
bool has_explicit_tail_calls_;
};
// Defines whether tail call expressions are allowed or not.
enum class ReturnExprContext {
// We are inside return statement which is allowed to contain tail call
// expressions. Tail call expressions are allowed.
kInsideValidReturnStatement,
// We are inside a block in which tail call expressions are allowed but
// not yet inside a return statement.
kInsideValidBlock,
// Tail call expressions are not allowed in the following blocks.
kInsideTryBlock,
kInsideForInOfBody,
};
class FunctionState final : public BlockState {
public:
FunctionState(FunctionState** function_state_stack, Scope** scope_stack,
@ -456,27 +404,10 @@ class ParserBase {
return destructuring_assignments_to_rewrite_;
}
TailCallExpressionList& tail_call_expressions() {
return tail_call_expressions_;
}
void AddImplicitTailCallExpression(ExpressionT expression) {
if (return_expr_context() ==
ReturnExprContext::kInsideValidReturnStatement) {
tail_call_expressions_.AddImplicitTailCall(expression);
}
}
ZoneList<typename ExpressionClassifier::Error>* GetReportedErrorList() {
return &reported_errors_;
}
ReturnExprContext return_expr_context() const {
return return_expr_context_;
}
void set_return_expr_context(ReturnExprContext context) {
return_expr_context_ = context;
}
ZoneList<ExpressionT>* non_patterns_to_rewrite() {
return &non_patterns_to_rewrite_;
}
@ -537,8 +468,6 @@ class ParserBase {
DeclarationScope* scope_;
ZoneList<DestructuringAssignment> destructuring_assignments_to_rewrite_;
TailCallExpressionList tail_call_expressions_;
ReturnExprContext return_expr_context_;
ZoneList<ExpressionT> non_patterns_to_rewrite_;
ZoneList<typename ExpressionClassifier::Error> reported_errors_;
@ -557,48 +486,6 @@ class ParserBase {
friend Impl;
};
// This scope sets current ReturnExprContext to given value.
class ReturnExprScope {
public:
explicit ReturnExprScope(FunctionState* function_state,
ReturnExprContext return_expr_context)
: function_state_(function_state),
sav_return_expr_context_(function_state->return_expr_context()) {
// Don't update context if we are requested to enable tail call
// expressions but current block does not allow them.
if (return_expr_context !=
ReturnExprContext::kInsideValidReturnStatement ||
sav_return_expr_context_ == ReturnExprContext::kInsideValidBlock) {
function_state->set_return_expr_context(return_expr_context);
}
}
~ReturnExprScope() {
function_state_->set_return_expr_context(sav_return_expr_context_);
}
private:
FunctionState* function_state_;
ReturnExprContext sav_return_expr_context_;
};
// Collects all return expressions at tail call position in this scope
// to a separate list.
class CollectExpressionsInTailPositionToListScope {
public:
CollectExpressionsInTailPositionToListScope(FunctionState* function_state,
TailCallExpressionList* list)
: function_state_(function_state), list_(list) {
function_state->tail_call_expressions().Swap(*list_);
}
~CollectExpressionsInTailPositionToListScope() {
function_state_->tail_call_expressions().Swap(*list_);
}
private:
FunctionState* function_state_;
TailCallExpressionList* list_;
};
struct DeclarationDescriptor {
enum Kind { NORMAL, PARAMETER };
Scope* scope;
@ -641,15 +528,13 @@ class ParserBase {
scope(nullptr),
init_block(parser->impl()->NullBlock()),
inner_block(parser->impl()->NullBlock()),
bound_names(1, parser->zone()),
tail_call_expressions(parser->zone()) {}
bound_names(1, parser->zone()) {}
IdentifierT name;
ExpressionT pattern;
Scope* scope;
BlockT init_block;
BlockT inner_block;
ZoneList<const AstRawString*> bound_names;
TailCallExpressionList tail_call_expressions;
};
struct ForInfo {
@ -1574,7 +1459,6 @@ class ParserBase {
int function_literal_id_;
bool allow_natives_;
bool allow_tailcalls_;
bool allow_harmony_do_expressions_;
bool allow_harmony_function_sent_;
bool allow_harmony_restrictive_generators_;
@ -1597,8 +1481,6 @@ ParserBase<Impl>::FunctionState::FunctionState(
outer_function_state_(*function_state_stack),
scope_(scope),
destructuring_assignments_to_rewrite_(16, scope->zone()),
tail_call_expressions_(scope->zone()),
return_expr_context_(ReturnExprContext::kInsideValidBlock),
non_patterns_to_rewrite_(0, scope->zone()),
reported_errors_(16, scope->zone()),
next_function_is_likely_called_(false),
@ -4198,7 +4080,6 @@ void ParserBase<Impl>::ParseFunctionBody(
impl()->CreateFunctionNameAssignment(function_name, pos, function_type,
function_scope, result,
kFunctionNameAssignmentIndex);
impl()->MarkCollectedTailCallExpressions();
}
template <typename Impl>
@ -4353,10 +4234,6 @@ ParserBase<Impl>::ParseArrowFunctionLiteral(
// Single-expression body
has_braces = false;
int pos = position();
DCHECK(ReturnExprContext::kInsideValidBlock ==
function_state_->return_expr_context());
ReturnExprScope allow_tail_calls(
function_state_, ReturnExprContext::kInsideValidReturnStatement);
body = impl()->NewStatementList(1);
impl()->AddParameterInitializationBlock(
formal_parameters, body, kind == kAsyncArrowFunction, CHECK_OK);
@ -4371,13 +4248,8 @@ ParserBase<Impl>::ParseArrowFunctionLiteral(
impl()->RewriteNonPattern(CHECK_OK);
body->Add(BuildReturnStatement(expression, expression->position()),
zone());
if (allow_tailcalls() && !is_sloppy(language_mode())) {
// ES6 14.6.1 Static Semantics: IsInTailPosition
impl()->MarkTailPosition(expression);
}
}
expected_property_count = function_state.expected_property_count();
impl()->MarkCollectedTailCallExpressions();
}
formal_parameters.scope->set_end_position(scanner()->location().end_pos);
@ -5317,21 +5189,7 @@ typename ParserBase<Impl>::StatementT ParserBase<Impl>::ParseReturnStatement(
return_value = impl()->GetLiteralUndefined(position());
}
} else {
if (IsDerivedConstructor(function_state_->kind())) {
// Because of the return code rewriting that happens in case of a subclass
// constructor we don't want to accept tail calls, therefore we don't set
// ReturnExprScope to kInsideValidReturnStatement here.
return_value = ParseExpression(true, CHECK_OK);
} else {
ReturnExprScope maybe_allow_tail_calls(
function_state_, ReturnExprContext::kInsideValidReturnStatement);
return_value = ParseExpression(true, CHECK_OK);
if (allow_tailcalls() && !is_sloppy(language_mode()) && !is_resumable()) {
// ES6 14.6.1 Static Semantics: IsInTailPosition
function_state_->AddImplicitTailCallExpression(return_value);
}
}
}
ExpectSemicolon(CHECK_OK);
return_value = impl()->RewriteReturn(return_value, loc.beg_pos);
@ -5536,12 +5394,7 @@ typename ParserBase<Impl>::StatementT ParserBase<Impl>::ParseTryStatement(
Expect(Token::TRY, CHECK_OK);
int pos = position();
BlockT try_block = impl()->NullBlock();
{
ReturnExprScope no_tail_calls(function_state_,
ReturnExprContext::kInsideTryBlock);
try_block = ParseBlock(nullptr, CHECK_OK);
}
BlockT try_block = ParseBlock(nullptr, CHECK_OK);
CatchInfo catch_info(this);
@ -5560,9 +5413,6 @@ typename ParserBase<Impl>::StatementT ParserBase<Impl>::ParseTryStatement(
catch_info.scope->set_start_position(scanner()->location().beg_pos);
{
CollectExpressionsInTailPositionToListScope
collect_tail_call_expressions_scope(
function_state_, &catch_info.tail_call_expressions);
BlockState catch_block_state(&scope_, catch_info.scope);
catch_block = factory()->NewBlock(nullptr, 16, false, kNoSourcePosition);
@ -5728,8 +5578,6 @@ ParserBase<Impl>::ParseForEachStatementWithDeclarations(
StatementT final_loop = impl()->NullStatement();
{
ReturnExprScope no_tail_calls(function_state_,
ReturnExprContext::kInsideForInOfBody);
BlockState block_state(zone(), &scope_);
scope()->set_start_position(scanner()->location().beg_pos);
@ -5791,8 +5639,6 @@ ParserBase<Impl>::ParseForEachStatementWithoutDeclarations(
Scope* for_scope = scope();
{
ReturnExprScope no_tail_calls(function_state_,
ReturnExprContext::kInsideForInOfBody);
BlockState block_state(zone(), &scope_);
scope()->set_start_position(scanner()->location().beg_pos);
@ -5998,8 +5844,6 @@ typename ParserBase<Impl>::StatementT ParserBase<Impl>::ParseForAwaitStatement(
StatementT final_loop = impl()->NullStatement();
Scope* for_scope = scope();
{
ReturnExprScope no_tail_calls(function_state_,
ReturnExprContext::kInsideForInOfBody);
BlockState block_state(zone(), &scope_);
scope()->set_start_position(scanner()->location().beg_pos);

25
src/parsing/parser.cc
View File

@ -421,10 +421,6 @@ Literal* Parser::ExpressionFromLiteral(Token::Value token, int pos) {
return NULL;
}
void Parser::MarkTailPosition(Expression* expression) {
expression->MarkTail();
}
Expression* Parser::NewV8Intrinsic(const AstRawString* name,
ZoneList<Expression*>* args, int pos,
bool* ok) {
@ -521,8 +517,6 @@ Parser::Parser(ParseInfo* info)
allow_lazy_ = FLAG_lazy && info->allow_lazy_parsing() && !info->is_native() &&
info->extension() == nullptr && can_compile_lazily;
set_allow_natives(FLAG_allow_natives_syntax || info->is_native());
set_allow_tailcalls(FLAG_harmony_tailcalls && !info->is_native() &&
info->is_tail_call_elimination_enabled());
set_allow_harmony_do_expressions(FLAG_harmony_do_expressions);
set_allow_harmony_function_sent(FLAG_harmony_function_sent);
set_allow_harmony_restrictive_generators(FLAG_harmony_restrictive_generators);
@ -1760,11 +1754,6 @@ Statement* Parser::RewriteTryStatement(Block* try_block, Block* catch_block,
}
if (catch_block != nullptr) {
// For a try-catch construct append return expressions from the catch block
// to the list of return expressions.
function_state_->tail_call_expressions().Append(
catch_info.tail_call_expressions);
DCHECK_NULL(finally_block);
DCHECK_NOT_NULL(catch_info.scope);
TryCatchStatement* stmt = factory()->NewTryCatchStatement(
@ -3757,10 +3746,8 @@ ZoneList<Expression*>* Parser::PrepareSpreadArguments(
Expression* Parser::SpreadCall(Expression* function,
ZoneList<Expression*>* args, int pos,
Call::PossiblyEval is_possibly_eval) {
// Handle these cases in BytecodeGenerator.
// [Call,New]WithSpread bytecodes aren't used with tailcalls - see
// https://crbug.com/v8/5867
if (!allow_tailcalls() && OnlyLastArgIsSpread(args)) {
// Handle this case in BytecodeGenerator.
if (OnlyLastArgIsSpread(args)) {
return factory()->NewCall(function, args, pos);
}
@ -3841,14 +3828,6 @@ void Parser::SetAsmModule() {
scope()->AsDeclarationScope()->set_asm_module();
}
void Parser::MarkCollectedTailCallExpressions() {
const ZoneList<Expression*>& tail_call_expressions =
function_state_->tail_call_expressions().expressions();
for (int i = 0; i < tail_call_expressions.length(); ++i) {
MarkTailPosition(tail_call_expressions[i]);
}
}
Expression* Parser::ExpressionListToExpression(ZoneList<Expression*>* args) {
Expression* expr = args->at(0);
for (int i = 1; i < args->length(); ++i) {

4
src/parsing/parser.h
View File

@ -293,7 +293,6 @@ class V8_EXPORT_PRIVATE Parser : public NON_EXPORTED_BASE(ParserBase<Parser>) {
parsing_on_main_thread_);
#define SET_ALLOW(name) reusable_preparser_->set_allow_##name(allow_##name());
SET_ALLOW(natives);
SET_ALLOW(tailcalls);
SET_ALLOW(harmony_do_expressions);
SET_ALLOW(harmony_function_sent);
SET_ALLOW(harmony_class_fields);
@ -635,9 +634,6 @@ class V8_EXPORT_PRIVATE Parser : public NON_EXPORTED_BASE(ParserBase<Parser>) {
void SetLanguageMode(Scope* scope, LanguageMode mode);
void SetAsmModule();
V8_INLINE void MarkCollectedTailCallExpressions();
V8_INLINE void MarkTailPosition(Expression* expression);
// Rewrite all DestructuringAssignments in the current FunctionState.
V8_INLINE void RewriteDestructuringAssignments();

8
src/runtime/runtime-test.cc
View File

@ -738,14 +738,6 @@ RUNTIME_FUNCTION(Runtime_TraceExit) {
return obj; // return TOS
}
RUNTIME_FUNCTION(Runtime_TraceTailCall) {
SealHandleScope shs(isolate);
DCHECK_EQ(0, args.length());
PrintIndentation(isolate);
PrintF("} -> tail call ->\n");
return isolate->heap()->undefined_value();
}
RUNTIME_FUNCTION(Runtime_GetExceptionDetails) {
HandleScope shs(isolate);
DCHECK_EQ(1, args.length());

1
src/runtime/runtime.h
View File

@ -584,7 +584,6 @@ namespace internal {
F(DisassembleFunction, 1, 1) \
F(TraceEnter, 0, 1) \
F(TraceExit, 1, 1) \
F(TraceTailCall, 0, 1) \
F(HaveSameMap, 2, 1) \
F(InNewSpace, 1, 1) \
F(HasSmiElements, 1, 1) \

22
test/cctest/interpreter/test-interpreter.cc
View File

@ -1246,7 +1246,7 @@ TEST(InterpreterStoreKeyedProperty) {
CHECK_EQ(Smi::cast(*result), Smi::FromInt(999));
}
static void TestInterpreterCall(TailCallMode tail_call_mode) {
TEST(InterpreterCall) {
HandleAndZoneScope handles;
Isolate* isolate = handles.main_isolate();
Zone* zone = handles.main_zone();
@ -1275,11 +1275,7 @@ static void TestInterpreterCall(TailCallMode tail_call_mode) {
.StoreAccumulatorInRegister(reg)
.MoveRegister(builder.Receiver(), args[0]);
if (tail_call_mode == TailCallMode::kAllow) {
builder.TailCall(reg, args, call_slot_index);
} else {
builder.CallProperty(reg, args, call_slot_index);
}
builder.Return();
ast_factory.Internalize(isolate);
@ -1302,11 +1298,7 @@ static void TestInterpreterCall(TailCallMode tail_call_mode) {
builder.LoadNamedProperty(builder.Receiver(), name, slot_index)
.StoreAccumulatorInRegister(reg)
.MoveRegister(builder.Receiver(), args[0]);
if (tail_call_mode == TailCallMode::kAllow) {
builder.TailCall(reg, args, call_slot_index);
} else {
builder.CallProperty(reg, args, call_slot_index);
}
builder.Return();
ast_factory.Internalize(isolate);
Handle<BytecodeArray> bytecode_array = builder.ToBytecodeArray(isolate);
@ -1338,11 +1330,7 @@ static void TestInterpreterCall(TailCallMode tail_call_mode) {
.LoadLiteral(Smi::FromInt(11))
.StoreAccumulatorInRegister(args[2]);
if (tail_call_mode == TailCallMode::kAllow) {
builder.TailCall(reg, args, call_slot_index);
} else {
builder.CallProperty(reg, args, call_slot_index);
}
builder.Return();
@ -1391,11 +1379,7 @@ static void TestInterpreterCall(TailCallMode tail_call_mode) {
.LoadLiteral(ast_factory.NewString(ast_factory.GetOneByteString("j")))
.StoreAccumulatorInRegister(args[10]);
if (tail_call_mode == TailCallMode::kAllow) {
builder.TailCall(reg, args, call_slot_index);
} else {
builder.CallProperty(reg, args, call_slot_index);
}
builder.Return();
@ -1419,10 +1403,6 @@ static void TestInterpreterCall(TailCallMode tail_call_mode) {
}
}
TEST(InterpreterCall) { TestInterpreterCall(TailCallMode::kDisallow); }
TEST(InterpreterTailCall) { TestInterpreterCall(TailCallMode::kAllow); }
static BytecodeArrayBuilder& SetRegister(BytecodeArrayBuilder& builder,
Register reg, int value,
Register scratch) {

117
test/cctest/test-debug.cc
View File

@ -6431,123 +6431,6 @@ TEST(BreakLocationIterator) {
DisableDebugger(isolate);
}
TEST(DisableTailCallElimination) {
i::FLAG_allow_natives_syntax = true;
i::FLAG_harmony_tailcalls = true;
// TODO(ishell, 4698): Investigate why TurboFan in --always-opt mode makes
// stack[2].getFunctionName() return null.
i::FLAG_turbo_inlining = false;
DebugLocalContext env;
v8::Isolate* isolate = env->GetIsolate();
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
v8::HandleScope scope(isolate);
CHECK(i_isolate->is_tail_call_elimination_enabled());
CompileRun(
"'use strict'; \n"
"Error.prepareStackTrace = (error,stack) => { \n"
" error.strace = stack; \n"
" return error.message + \"\\n at \" + stack.join(\"\\n at \"); \n"
"} \n"
" \n"
"function getCaller() { \n"
" var e = new Error(); \n"
" e.stack; // prepare stack trace \n"
" var stack = e.strace; \n"
" %GlobalPrint('caller: '); \n"
" %GlobalPrint(stack[2].getFunctionName()); \n"
" %GlobalPrint('\\n'); \n"
" return stack[2].getFunctionName(); \n"
"} \n"
"function f() { \n"
" var caller = getCaller(); \n"
" if (caller === 'g') return 1; \n"
" if (caller === 'h') return 2; \n"
" return 0; \n"
"} \n"
"function g() { \n"
" return f(); \n"
"} \n"
"function h() { \n"
" var result = g(); \n"
" return result; \n"
"} \n"
"%NeverOptimizeFunction(getCaller); \n"
"%NeverOptimizeFunction(f); \n"
"%NeverOptimizeFunction(h); \n"
"");
ExpectInt32("h();", 2);
ExpectInt32("h(); %OptimizeFunctionOnNextCall(g); h();", 2);
i_isolate->SetTailCallEliminationEnabled(false);
CHECK(!i_isolate->is_tail_call_elimination_enabled());
ExpectInt32("h();", 1);
ExpectInt32("h(); %OptimizeFunctionOnNextCall(g); h();", 1);
i_isolate->SetTailCallEliminationEnabled(true);
CHECK(i_isolate->is_tail_call_elimination_enabled());
ExpectInt32("h();", 2);
ExpectInt32("h(); %OptimizeFunctionOnNextCall(g); h();", 2);
}
TEST(DebugStepNextTailCallEliminiation) {
i::FLAG_allow_natives_syntax = true;
i::FLAG_harmony_tailcalls = true;
// TODO(ishell, 4698): Investigate why TurboFan in --always-opt mode makes
// stack[2].getFunctionName() return null.
i::FLAG_turbo_inlining = false;
DebugLocalContext env;
env.ExposeDebug();
v8::Isolate* isolate = env->GetIsolate();
i::Isolate* i_isolate = reinterpret_cast<i::Isolate*>(isolate);
v8::HandleScope scope(isolate);
CHECK(i_isolate->is_tail_call_elimination_enabled());
const char* source =
"'use strict'; \n"
"var Debug = debug.Debug; \n"
"var exception = null; \n"
"var breaks = 0; \n"
"var log = []; \n"
"function f(x) { \n"
" if (x == 2) { \n"
" debugger; // Break a \n"
" } \n"
" if (x-- > 0) { // Break b \n"
" return f(x); // Break c \n"
" } \n"
"} // Break e \n"
"function listener(event, exec_state, event_data, data) {\n"
" if (event != Debug.DebugEvent.Break) return; \n"
" try { \n"
" var line = exec_state.frame(0).sourceLineText(); \n"
" var col = exec_state.frame(0).sourceColumn(); \n"
" var match = line.match(/\\/\\/ Break (\\w)/); \n"
" log.push(match[1] + col); \n"
" exec_state.prepareStep(Debug.StepAction.StepNext); \n"
" } catch (e) { \n"
" exception = e; \n"
" }; \n"
"}; \n"
"Debug.setListener(listener); \n"
"f(4); \n"
"Debug.setListener(null); // Break d \n";
CompileRun(source);
ExpectNull("exception");
ExpectString("JSON.stringify(log)", "[\"a4\",\"b2\",\"c4\",\"c11\",\"d0\"]");
i_isolate->SetTailCallEliminationEnabled(false);
CompileRun(
"log = []; \n"
"Debug.setListener(listener); \n"
"f(5); \n"
"Debug.setListener(null); // Break f \n");
ExpectNull("exception");
ExpectString("JSON.stringify(log)",
"[\"a4\",\"b2\",\"c4\",\"e0\",\"e0\",\"e0\",\"e0\",\"f0\"]");
}
size_t current_action = 0;
StepAction actions[] = {StepNext, StepNext};
static void DebugStepOverFunctionWithCaughtExceptionListener(

46
test/debugger/debug/es6/debug-stepin-tailcalls.js
View File

@ -1,46 +0,0 @@
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --harmony-tailcalls
"use strict";
var Debug = debug.Debug
var exception = null;
var breaks = 0;
function f(x) {
if (x > 0) { // B3 B5 B7 B9
return f(x - 1); // B4 B6 B8
}
} // B10
function g(x) {
return f(x); // B2
}
function h(x) {
debugger; // B0
g(x); // B1
} // B11
function listener(event, exec_state, event_data, data) {
if (event != Debug.DebugEvent.Break) return;
try {
print(event_data.sourceLineText());
assertTrue(event_data.sourceLineText().indexOf(`B${breaks++}`) > 0);
exec_state.prepareStep(Debug.StepAction.StepIn);
} catch (e) {
exception = e;
};
};
Debug.setListener(listener);
h(3);
Debug.setListener(null); // B12
assertNull(exception);
assertEquals(13, breaks);

45
test/debugger/debug/es6/debug-stepout-tailcalls.js
View File

@ -1,45 +0,0 @@
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --harmony-tailcalls
"use strict";
var Debug = debug.Debug
var exception = null;
var breaks = 0;
function f(x) {
if (x > 0) {
return f(x - 1); // Tail call
}
debugger; // Break 0
}
function g(x) {
return f(x); // Tail call
}
function h(x) {
g(x); // Not tail call
} // Break 1
function listener(event, exec_state, event_data, data) {
if (event != Debug.DebugEvent.Break) return;
try {
assertTrue(event_data.sourceLineText().indexOf(`Break ${breaks++}`) > 0);
exec_state.prepareStep(Debug.StepAction.StepOut);
} catch (e) {
exception = e;
};
};
Debug.setListener(listener);
h(3);
Debug.setListener(null); // Break 2
assertNull(exception);
assertEquals(3, breaks);

2
test/mjsunit/compiler/deopt-accessors5.js
View File

@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
// Flags: --allow-natives-syntax
"use strict";

2
test/mjsunit/compiler/deopt-accessors6.js
View File

@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
// Flags: --allow-natives-syntax
"use strict";

2
test/mjsunit/compiler/regress-628773.js
View File

@ -2,8 +2,6 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --harmony-tailcalls
"use strict";
function foo() {

13
test/mjsunit/es6/tail-call-megatest-shard0.js
View File

@ -1,13 +0,0 @@
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
try {
load("mjsunit/es6/tail-call-megatest.js");
} catch(e) {
load("test/mjsunit/es6/tail-call-megatest.js");
}
run_tests(0);

13
test/mjsunit/es6/tail-call-megatest-shard1.js
View File

@ -1,13 +0,0 @@
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
try {
load("mjsunit/es6/tail-call-megatest.js");
} catch(e) {
load("test/mjsunit/es6/tail-call-megatest.js");
}
run_tests(1);

13
test/mjsunit/es6/tail-call-megatest-shard2.js
View File

@ -1,13 +0,0 @@
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
try {
load("mjsunit/es6/tail-call-megatest.js");
} catch(e) {
load("test/mjsunit/es6/tail-call-megatest.js");
}
run_tests(2);

13
test/mjsunit/es6/tail-call-megatest-shard3.js
View File

@ -1,13 +0,0 @@
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
try {
load("mjsunit/es6/tail-call-megatest.js");
} catch(e) {
load("test/mjsunit/es6/tail-call-megatest.js");
}
run_tests(3);

13
test/mjsunit/es6/tail-call-megatest-shard4.js
View File

@ -1,13 +0,0 @@
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
try {
load("mjsunit/es6/tail-call-megatest.js");
} catch(e) {
load("test/mjsunit/es6/tail-call-megatest.js");
}
run_tests(4);

13
test/mjsunit/es6/tail-call-megatest-shard5.js
View File

@ -1,13 +0,0 @@
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
try {
load("mjsunit/es6/tail-call-megatest.js");
} catch(e) {
load("test/mjsunit/es6/tail-call-megatest.js");
}
run_tests(5);

13
test/mjsunit/es6/tail-call-megatest-shard6.js
View File

@ -1,13 +0,0 @@
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
try {
load("mjsunit/es6/tail-call-megatest.js");
} catch(e) {
load("test/mjsunit/es6/tail-call-megatest.js");
}
run_tests(6);

13
test/mjsunit/es6/tail-call-megatest-shard7.js
View File

@ -1,13 +0,0 @@
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
try {
load("mjsunit/es6/tail-call-megatest.js");
} catch(e) {
load("test/mjsunit/es6/tail-call-megatest.js");
}
run_tests(7);

13
test/mjsunit/es6/tail-call-megatest-shard8.js
View File

@ -1,13 +0,0 @@
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
try {
load("mjsunit/es6/tail-call-megatest.js");
} catch(e) {
load("test/mjsunit/es6/tail-call-megatest.js");
}
run_tests(8);

13
test/mjsunit/es6/tail-call-megatest-shard9.js
View File

@ -1,13 +0,0 @@
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
try {
load("mjsunit/es6/tail-call-megatest.js");
} catch(e) {
load("test/mjsunit/es6/tail-call-megatest.js");
}
run_tests(9);

423
test/mjsunit/es6/tail-call-megatest.js
View File

@ -1,423 +0,0 @@
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
Error.prepareStackTrace = (error,stack) => {
error.strace = stack;
return error.message + "\n at " + stack.join("\n at ");
}
var verbose = typeof(arguments) !== "undefined" && arguments.indexOf("-v") >= 0;
function checkStackTrace(expected) {
var e = new Error();
e.stack; // prepare stack trace
var stack = e.strace;
assertEquals("checkStackTrace", stack[0].getFunctionName());
for (var i = 0; i < expected.length; i++) {
assertEquals(expected[i].name, stack[i + 1].getFunctionName());
}
}
var CAN_INLINE_COMMENT = "// Let it be inlined.";
var DONT_INLINE_COMMENT = (function() {
var line = "1";
for (var i = 0; i < 200; ++i) {
line += "," + i;
}
line += ";\n";
return line;
})();
function ident_source(source, ident) {
ident = " ".repeat(ident);
return ident + source.replace(/\n/gi, "\n" + ident);
}
var SHARDS_COUNT = 10;
function run_tests(shard) {
function inlinable_comment(inlinable) {
return inlinable ? CAN_INLINE_COMMENT : DONT_INLINE_COMMENT;
}
// Check arguments manually to avoid bailing out with reason "bad value
// context for arguments value".
function check_arguments_template(expected_name) {
var lines = [
` assertEquals_(${expected_name}.length, arguments.length);`,
` for (var i = 0; i < ${expected_name}.length; i++) {`,
` assertEquals_(${expected_name}[i], arguments[i]);`,
` }`,
];
return lines.join("\n");
}
var check_arguments = check_arguments_template("expected_args");
function deopt_template(deopt_mode) {
switch(deopt_mode) {
case "none":
return " // Don't deoptimize";
case "f":
case "g":
case "test":
return ` %DeoptimizeFunction(${deopt_mode});`;
default:
assertUnreachable();
}
}
var f_cfg_sloppy = {
func_name: 'f',
source_template: function(cfg) {
var receiver = cfg.f_receiver != undefined ? cfg.f_receiver
: "global";
var do_checks = [
` assertEquals_(${receiver}, this);`,
` ${!cfg.check_new_target ? "// " : ""}assertEquals_(undefined, new.target);`,
check_arguments,
` checkStackTrace_([f, test]);`,
].join("\n");
var lines = [
`function f(a) {`,
` ${inlinable_comment(cfg.f_inlinable)}`,
` counter++;`,
` var expected_args = [${cfg.f_args}];`,
do_checks,
deopt_template(cfg.deopt_mode),
do_checks,
` return 42;`,
`}`,
];
return lines.join("\n");
},
};
var f_cfg_strict = {
func_name: 'f',
source_template: function(cfg) {
var receiver = cfg.f_receiver != undefined ? cfg.f_receiver
: "undefined";
var do_checks = [
` assertEquals_(${receiver}, this);`,
` ${!cfg.check_new_target ? "// " : ""}assertEquals_(undefined, new.target);`,
check_arguments,
` checkStackTrace_([f, test]);`,
].join("\n");
var lines = [
`function f(a) {`,
` "use strict";`,
` ${inlinable_comment(cfg.f_inlinable)}`,
` counter++;`,
` var expected_args = [${cfg.f_args}];`,
do_checks,
deopt_template(cfg.deopt_mode),
do_checks,
` return 42;`,
`}`,
];
return lines.join("\n");
},
};
var f_cfg_possibly_eval = {
func_name: 'eval',
source_template: function(cfg) {
var receiver = cfg.f_receiver != undefined ? cfg.f_receiver
: "global";
var do_checks = [
` assertEquals_(${receiver}, this);`,
` ${!cfg.check_new_target ? "// " : ""}assertEquals_(undefined, new.target);`,
check_arguments,
` checkStackTrace_([f, test]);`,
].join("\n");
var lines = [
`function f(a) {`,
` ${inlinable_comment(cfg.f_inlinable)}`,
` counter++;`,
` var expected_args = [${cfg.f_args}];`,
do_checks,
deopt_template(cfg.deopt_mode),
do_checks,
` return 42;`,
`}`,
`var eval = f;`,
];
return lines.join("\n");
},
};
var f_cfg_bound = {
func_name: 'bound',
source_template: function(cfg) {
var do_checks = [
` assertEquals_(receiver, this);`,
` ${!cfg.check_new_target ? "// " : ""}assertEquals_(undefined, new.target);`,
check_arguments,
` checkStackTrace_([f, test]);`,
].join("\n");
var lines = [
`function f(a) {`,
` "use strict";`,
` ${inlinable_comment(cfg.f_inlinable)}`,
` counter++;`,
` var expected_args = [${cfg.f_args}];`,
do_checks,
deopt_template(cfg.deopt_mode),
do_checks,
` return 42;`,
`}`,
`var receiver = {a: 153};`,
`var bound = f.bind(receiver);`,
];
return lines.join("\n");
},
};
var f_cfg_proxy = {
func_name: 'p',
source_template: function(cfg) {
var receiver = cfg.f_receiver != undefined ? cfg.f_receiver
: "global";
var do_checks = [
` assertEquals_(${receiver}, this);`,
` ${!cfg.check_new_target ? "// " : ""}assertEquals_(undefined, new.target);`,
check_arguments,
` checkStackTrace_([f, test]);`,
].join("\n");
var lines = [
`function f(a) {`,
` ${inlinable_comment(cfg.f_inlinable)}`,
` counter++;`,
` var expected_args = [${cfg.f_args}];`,
do_checks,
deopt_template(cfg.deopt_mode),
do_checks,
` return 42;`,
`}`,
`var p = new Proxy(f, {});`,
];
return lines.join("\n");
},
};
var g_cfg_normal = {
receiver: undefined,
source_template: function(cfg) {
var lines = [
`function g(a) {`,
` "use strict";`,
` ${inlinable_comment(cfg.g_inlinable)}`,
` var expected_args = [${cfg.g_args}];`,
check_arguments,
` return ${cfg.f_name}(${cfg.f_args});`,
`}`,
];
return lines.join("\n");
},
};
var g_cfg_reflect_apply = {
receiver: "the_receiver",
source_template: function(cfg) {
var lines = [
`function g(a) {`,
` "use strict";`,
` ${inlinable_comment(cfg.g_inlinable)}`,
` var expected_args = [${cfg.g_args}];`,
check_arguments,
` return Reflect.apply(${cfg.f_name}, the_receiver, [${cfg.f_args}]);`,
`}`,
];
return lines.join("\n");
},
};
var g_cfg_function_apply = {
receiver: "the_receiver",
source_template: function(cfg) {
var lines = [
`function g(a) {`,
` "use strict";`,
` ${inlinable_comment(cfg.g_inlinable)}`,
` var expected_args = [${cfg.g_args}];`,
check_arguments,
` return ${cfg.f_name}.apply(the_receiver, [${cfg.f_args}]);`,
`}`,
];
return lines.join("\n");
},
};
var g_cfg_function_apply_arguments_object = {
receiver: "the_receiver",
source_template: function(cfg) {
cfg.f_args = cfg.g_args;
var lines = [
`function g(a) {`,
` "use strict";`,
` ${inlinable_comment(cfg.g_inlinable)}`,
` var expected_args = [${cfg.g_args}];`,
check_arguments,
` return ${cfg.f_name}.apply(the_receiver, arguments);`,
`}`,
];
return lines.join("\n");
},
};
var g_cfg_function_call = {
receiver: "the_receiver",
source_template: function(cfg) {
var f_args = "the_receiver";
if (cfg.f_args !== "") f_args += ", ";
f_args += cfg.f_args;
var lines = [
`function g(a) {`,
` "use strict";`,
` ${inlinable_comment(cfg.g_inlinable)}`,
` var expected_args = [${cfg.g_args}];`,
check_arguments,
` return ${cfg.f_name}.call(${f_args});`,
`}`,
];
return lines.join("\n");
},
};
function test_template(cfg) {
// Note: g_source_template modifies cfg.f_args in some cases.
var g_source = cfg.g_source_template(cfg);
g_source = ident_source(g_source, 2);
var f_source = cfg.f_source_template(cfg);
f_source = ident_source(f_source, 2);
var lines = [
`(function() {`,
` // Avoid bailing out because of "Reference to a variable which requires dynamic lookup".`,
` var assertEquals_ = assertEquals;`,
` var checkStackTrace_ = checkStackTrace;`,
` var undefined = void 0;`,
` var global = Function('return this')();`,
` var the_receiver = {receiver: 1};`,
` var counter = 0;`,
``,
` // Don't inline helper functions`,
` %NeverOptimizeFunction(assertEquals);`,
` %NeverOptimizeFunction(checkStackTrace);`,
``,
f_source,
g_source,
` function test() {`,
` "use strict";`,
` assertEquals_(42, g(${cfg.g_args}));`,
` }`,
` ${"test();".repeat(cfg.test_warmup_count)}`,
` ${cfg.f_inlinable ? "%SetForceInlineFlag(f)" : "%OptimizeFunctionOnNextCall(f)"};`,
` ${cfg.g_inlinable ? "%SetForceInlineFlag(g)" : "%OptimizeFunctionOnNextCall(g)"};`,
` %OptimizeFunctionOnNextCall(test);`,
` test();`,
` assertEquals(${1 + cfg.test_warmup_count}, counter);`,
`})();`,
``,
];
var source = lines.join("\n");
return source;
}
var f_args_variants = [/*"", "1",*/ "1, 2"];
var g_args_variants = [/*"", "10",*/ "10, 20"];
var f_inlinable_variants = [true, false];
var g_inlinable_variants = [true, false];
// This is to avoid bailing out because of referencing new.target.
var check_new_target_variants = [/*true,*/ false];
var deopt_mode_variants = ["none", "f", "g", "test"];
var f_variants = [
f_cfg_sloppy,
f_cfg_strict,
f_cfg_bound,
f_cfg_proxy,
// f_cfg_possibly_eval,
];
var g_variants = [
g_cfg_normal,
// g_cfg_reflect_apply,
g_cfg_function_apply,
// g_cfg_function_apply_arguments_object,
g_cfg_function_call,
];
var test_warmup_counts = [0, 1, 2];
var iter = 0;
var tests_executed = 0;
if (verbose && shard !== undefined) {
print("Running shard #" + shard);
}
f_variants.forEach((f_cfg) => {
check_new_target_variants.forEach((check_new_target) => {
deopt_mode_variants.forEach((deopt_mode) => {
g_variants.forEach((g_cfg) => {
f_args_variants.forEach((f_args) => {
g_args_variants.forEach((g_args) => {
f_inlinable_variants.forEach((f_inlinable) => {
g_inlinable_variants.forEach((g_inlinable) => {
test_warmup_counts.forEach((test_warmup_count) => {
if (shard !== undefined && (iter++) % SHARDS_COUNT != shard) {
if (verbose) {
print("skipping...");
}
return;
}
tests_executed++;
var cfg = {
f_source_template: f_cfg.source_template,
f_inlinable,
f_args,
f_name: f_cfg.func_name,
f_receiver: g_cfg.receiver,
g_source_template: g_cfg.source_template,
g_inlinable,
g_args,
test_warmup_count,
check_new_target,
deopt_mode,
};
var source = test_template(cfg);
if (verbose) {
// print("====================");
// print(source);
}
eval(source);
});
});
});
});
});
});
});
});
});
if (verbose) {
print("Number of tests executed: " + tests_executed);
}
}
// Uncomment to run all the tests at once or use shard runners.
//run_tests();

97
test/mjsunit/es6/tail-call-proxies.js
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@ -1,97 +0,0 @@
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
"use strict";
Error.prepareStackTrace = (e,s) => s;
function CheckStackTrace(expected) {
var stack = (new Error()).stack;
assertEquals("CheckStackTrace", stack[0].getFunctionName());
for (var i = 0; i < expected.length; i++) {
assertEquals(expected[i].name, stack[i + 1].getFunctionName());
}
}
// Tail call proxy function when caller does not have an arguments
// adaptor frame.
(function test() {
// Caller and callee have same number of arguments.
function f1(a) {
CheckStackTrace([f1, test]);
return 10 + a;
}
var p1 = new Proxy(f1, {});
function g1(a) { return p1(2); }
assertEquals(12, g1(1));
// Caller has more arguments than callee.
function f2(a) {
CheckStackTrace([f2, test]);
return 10 + a;
}
var p2 = new Proxy(f2, {});
function g2(a, b, c) { return p2(2); }
assertEquals(12, g2(1, 2, 3));
// Caller has less arguments than callee.
function f3(a, b, c) {
CheckStackTrace([f3, test]);
return 10 + a + b + c;
}
var p3 = new Proxy(f3, {});
function g3(a) { return p3(2, 3, 4); }
assertEquals(19, g3(1));
// Callee has arguments adaptor frame.
function f4(a, b, c) {
CheckStackTrace([f4, test]);
return 10 + a;
}
var p4 = new Proxy(f4, {});
function g4(a) { return p4(2); }
assertEquals(12, g4(1));
})();
// Tail call proxy function when caller has an arguments adaptor frame.
(function test() {
// Caller and callee have same number of arguments.
function f1(a) {
CheckStackTrace([f1, test]);
return 10 + a;
}
var p1 = new Proxy(f1, {});
function g1(a) { return p1(2); }
assertEquals(12, g1());
// Caller has more arguments than callee.
function f2(a) {
CheckStackTrace([f2, test]);
return 10 + a;
}
var p2 = new Proxy(f2, {});
function g2(a, b, c) { return p2(2); }
assertEquals(12, g2());
// Caller has less arguments than callee.
function f3(a, b, c) {
CheckStackTrace([f3, test]);
return 10 + a + b + c;
}
var p3 = new Proxy(f3, {});
function g3(a) { return p3(2, 3, 4); }
assertEquals(19, g3());
// Callee has arguments adaptor frame.
function f4(a, b, c) {
CheckStackTrace([f4, test]);
return 10 + a;
}
var p4 = new Proxy(f4, {});
function g4(a) { return p4(2); }
assertEquals(12, g4());
})();

143
test/mjsunit/es6/tail-call-simple.js
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@ -1,143 +0,0 @@
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls --stack-size=100
//
// Tail calls work only in strict mode.
//
(function() {
function f(n) {
if (n <= 0) {
return "foo";
}
return f(n - 1);
}
assertThrows(()=>{ f(1e5) });
%OptimizeFunctionOnNextCall(f);
assertThrows(()=>{ f(1e5) });
})();
//
// Tail call normal functions.
//
(function() {
"use strict";
function f(n) {
if (n <= 0) {
return "foo";
}
return f(n - 1);
}
assertEquals("foo", f(1e5));
%OptimizeFunctionOnNextCall(f);
assertEquals("foo", f(1e5));
})();
(function() {
"use strict";
function f(n) {
if (n <= 0) {
return "foo";
}
return f(n - 1, 42); // Call with arguments adaptor.
}
assertEquals("foo", f(1e5));
%OptimizeFunctionOnNextCall(f);
assertEquals("foo", f(1e5));
})();
(function() {
"use strict";
function f(n){
if (n <= 0) {
return "foo";
}
return g(n - 1);
}
function g(n){
if (n <= 0) {
return "bar";
}
return f(n - 1);
}
assertEquals("foo", f(1e5));
assertEquals("bar", f(1e5 + 1));
%OptimizeFunctionOnNextCall(f);
assertEquals("foo", f(1e5));
assertEquals("bar", f(1e5 + 1));
})();
(function() {
"use strict";
function f(n){
if (n <= 0) {
return "foo";
}
return g(n - 1, 42); // Call with arguments adaptor.
}
function g(n){
if (n <= 0) {
return "bar";
}
return f(n - 1, 42); // Call with arguments adaptor.
}
assertEquals("foo", f(1e5));
assertEquals("bar", f(1e5 + 1));
%OptimizeFunctionOnNextCall(f);
assertEquals("foo", f(1e5));
assertEquals("bar", f(1e5 + 1));
})();
//
// Tail call bound functions.
//
(function() {
"use strict";
function f0(n) {
if (n <= 0) {
return "foo";
}
return f_bound(n - 1);
}
var f_bound = f0.bind({});
function f(n) {
return f_bound(n);
}
assertEquals("foo", f(1e5));
%OptimizeFunctionOnNextCall(f);
assertEquals("foo", f(1e5));
})();
(function() {
"use strict";
function f0(n){
if (n <= 0) {
return "foo";
}
return g_bound(n - 1);
}
function g0(n){
if (n <= 0) {
return "bar";
}
return f_bound(n - 1);
}
var f_bound = f0.bind({});
var g_bound = g0.bind({});
function f(n) {
return f_bound(n);
}
assertEquals("foo", f(1e5));
assertEquals("bar", f(1e5 + 1));
%OptimizeFunctionOnNextCall(f);
assertEquals("foo", f(1e5));
assertEquals("bar", f(1e5 + 1));
})();

663
test/mjsunit/es6/tail-call.js
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@ -1,663 +0,0 @@
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
// Flags: --harmony-do-expressions
"use strict";
Error.prepareStackTrace = (error,stack) => {
error.strace = stack;
return error.message + "\n at " + stack.join("\n at ");
}
function CheckStackTrace(expected) {
var e = new Error();
e.stack; // prepare stack trace
var stack = e.strace;
assertEquals("CheckStackTrace", stack[0].getFunctionName());
for (var i = 0; i < expected.length; i++) {
assertEquals(expected[i].name, stack[i + 1].getFunctionName());
}
}
%NeverOptimizeFunction(CheckStackTrace);
function f(expected_call_stack, a, b) {
CheckStackTrace(expected_call_stack);
return a;
}
function f_153(expected_call_stack, a) {
CheckStackTrace(expected_call_stack);
return 153;
}
// Tail call when caller does not have an arguments adaptor frame.
(function() {
// Caller and callee have same number of arguments.
function f1(a) {
CheckStackTrace([f1, test]);
return 10 + a;
}
function g1(a) { return f1(2); }
// Caller has more arguments than callee.
function f2(a) {
CheckStackTrace([f2, test]);
return 10 + a;
}
function g2(a, b, c) { return f2(2); }
// Caller has less arguments than callee.
function f3(a, b, c) {
CheckStackTrace([f3, test]);
return 10 + a + b + c;
}
function g3(a) { return f3(2, 3, 4); }
// Callee has arguments adaptor frame.
function f4(a, b, c) {
CheckStackTrace([f4, test]);
return 10 + a;
}
function g4(a) { return f4(2); }
function test() {
assertEquals(12, g1(1));
assertEquals(12, g2(1, 2, 3));
assertEquals(19, g3(1));
assertEquals(12, g4(1));
}
test();
test();
%OptimizeFunctionOnNextCall(test);
test();
})();
// Tail call when caller has an arguments adaptor frame.
(function() {
// Caller and callee have same number of arguments.
function f1(a) {
CheckStackTrace([f1, test]);
return 10 + a;
}
function g1(a) { return f1(2); }
// Caller has more arguments than callee.
function f2(a) {
CheckStackTrace([f2, test]);
return 10 + a;
}
function g2(a, b, c) { return f2(2); }
// Caller has less arguments than callee.
function f3(a, b, c) {
CheckStackTrace([f3, test]);
return 10 + a + b + c;
}
function g3(a) { return f3(2, 3, 4); }
// Callee has arguments adaptor frame.
function f4(a, b, c) {
CheckStackTrace([f4, test]);
return 10 + a;
}
function g4(a) { return f4(2); }
function test() {
assertEquals(12, g1());
assertEquals(12, g2());
assertEquals(19, g3());
assertEquals(12, g4());
}
test();
test();
%OptimizeFunctionOnNextCall(test);
test();
})();
// Tail call bound function when caller does not have an arguments
// adaptor frame.
(function() {
// Caller and callee have same number of arguments.
function f1(a) {
assertEquals(153, this.a);
CheckStackTrace([f1, test]);
return 10 + a;
}
var b1 = f1.bind({a: 153});
function g1(a) { return b1(2); }
// Caller has more arguments than callee.
function f2(a) {
assertEquals(153, this.a);
CheckStackTrace([f2, test]);
return 10 + a;
}
var b2 = f2.bind({a: 153});
function g2(a, b, c) { return b2(2); }
// Caller has less arguments than callee.
function f3(a, b, c) {
assertEquals(153, this.a);
CheckStackTrace([f3, test]);
return 10 + a + b + c;
}
var b3 = f3.bind({a: 153});
function g3(a) { return b3(2, 3, 4); }
// Callee has arguments adaptor frame.
function f4(a, b, c) {
assertEquals(153, this.a);
CheckStackTrace([f4, test]);
return 10 + a;
}
var b4 = f4.bind({a: 153});
function g4(a) { return b4(2); }
function test() {
assertEquals(12, g1(1));
assertEquals(12, g2(1, 2, 3));
assertEquals(19, g3(1));
assertEquals(12, g4(1));
}
test();
test();
%OptimizeFunctionOnNextCall(test);
test();
})();
// Tail call bound function when caller has an arguments adaptor frame.
(function() {
// Caller and callee have same number of arguments.
function f1(a) {
assertEquals(153, this.a);
CheckStackTrace([f1, test]);
return 10 + a;
}
var b1 = f1.bind({a: 153});
function g1(a) { return b1(2); }
// Caller has more arguments than callee.
function f2(a) {
assertEquals(153, this.a);
CheckStackTrace([f2, test]);
return 10 + a;
}
var b2 = f2.bind({a: 153});
function g2(a, b, c) { return b2(2); }
// Caller has less arguments than callee.
function f3(a, b, c) {
assertEquals(153, this.a);
CheckStackTrace([f3, test]);
return 10 + a + b + c;
}
var b3 = f3.bind({a: 153});
function g3(a) { return b3(2, 3, 4); }
// Callee has arguments adaptor frame.
function f4(a, b, c) {
assertEquals(153, this.a);
CheckStackTrace([f4, test]);
return 10 + a;
}
var b4 = f4.bind({a: 153});
function g4(a) { return b4(2); }
function test() {
assertEquals(12, g1());
assertEquals(12, g2());
assertEquals(19, g3());
assertEquals(12, g4());
}
test();
test();
%OptimizeFunctionOnNextCall(test);
test();
})();
// Tail calling from getter.
(function() {
function g(v) {
CheckStackTrace([g, test]);
%DeoptimizeFunction(test);
return 153;
}
%NeverOptimizeFunction(g);
function f(v) {
return g();
}
%SetForceInlineFlag(f);
function test() {
var o = {};
o.__defineGetter__('p', f);
assertEquals(153, o.p);
}
test();
test();
%OptimizeFunctionOnNextCall(test);
test();
})();
// Tail calling from setter.
(function() {
function g() {
CheckStackTrace([g, test]);
%DeoptimizeFunction(test);
return 153;
}
%NeverOptimizeFunction(g);
function f(v) {
return g();
}
%SetForceInlineFlag(f);
function test() {
var o = {};
o.__defineSetter__('q', f);
assertEquals(1, o.q = 1);
}
test();
test();
%OptimizeFunctionOnNextCall(test);
test();
})();
// Tail calling from constructor.
(function() {
function g(context) {
CheckStackTrace([g, test]);
%DeoptimizeFunction(test);
return {x: 153};
}
%NeverOptimizeFunction(g);
function A() {
this.x = 42;
return g();
}
function test() {
var o = new A();
//%DebugPrint(o);
assertEquals(153, o.x);
}
test();
test();
%OptimizeFunctionOnNextCall(test);
test();
})();
// Tail calling via various expressions.
(function() {
function g1(a) {
return f([f, g1, test], false) || f([f, test], true);
}
function g2(a) {
return f([f, g2, test], true) && f([f, test], true);
}
function g3(a) {
return f([f, g3, test], 13), f([f, test], 153);
}
function g4(a) {
return f([f, g4, test], false) ||
(f([f, g4, test], true) && f([f, test], true));
}
function g5(a) {
return f([f, g5, test], true) &&
(f([f, g5, test], false) || f([f, test], true));
}
function g6(a) {
return f([f, g6, test], 13), f([f, g6, test], 42),
f([f, test], 153);
}
function g7(a) {
return f([f, g7, test], false) ||
(f([f, g7, test], false) ? f([f, test], true)
: f([f, test], true));
}
function g8(a) {
return f([f, g8, test], false) || f([f, g8, test], true) &&
f([f, test], true);
}
function g9(a) {
return f([f, g9, test], true) && f([f, g9, test], false) ||
f([f, test], true);
}
function g10(a) {
return f([f, g10, test], true) && f([f, g10, test], false) ||
f([f, g10, test], true) ?
f([f, g10, test], true) && f([f, g10, test], false) ||
f([f, test], true) :
f([f, g10, test], true) && f([f, g10, test], false) ||
f([f, test], true);
}
function test() {
assertEquals(true, g1());
assertEquals(true, g2());
assertEquals(153, g3());
assertEquals(true, g4());
assertEquals(true, g5());
assertEquals(153, g6());
assertEquals(true, g7());
assertEquals(true, g8());
assertEquals(true, g9());
assertEquals(true, g10());
}
test();
test();
%OptimizeFunctionOnNextCall(test);
test();
})();
// Tail calling from various statements.
(function() {
function g1() {
for (var v in {a:0}) {
return f_153([f_153, g1, test]);
}
}
function g1let() {
for (let v in {a:0}) {
return f_153([f_153, g1let, test]);
}
}
function g1nodecl() {
var v;
for (v in {a:0}) {
return f_153([f_153, g1nodecl, test]);
}
}
function g2() {
for (var v of [1, 2, 3]) {
return f_153([f_153, g2, test]);
}
}
function g2let() {
for (let v of [1, 2, 3]) {
return f_153([f_153, g2let, test]);
}
}
function g2nodecl() {
var v;
for (v of [1, 2, 3]) {
return f_153([f_153, g2nodecl, test]);
}
}
function g3() {
for (var i = 0; i < 10; i++) {
return f_153([f_153, test]);
}
}
function g3let() {
for (let i = 0; i < 10; i++) {
return f_153([f_153, test]);
}
}
function g3nodecl() {
var i;
for (i = 0; i < 10; i++) {
return f_153([f_153, test]);
}
}
function g4() {
while (true) {
return f_153([f_153, test]);
}
}
function g5() {
do {
return f_153([f_153, test]);
} while (true);
}
function test() {
assertEquals(153, g1());
assertEquals(153, g1let());
assertEquals(153, g1nodecl());
assertEquals(153, g2());
assertEquals(153, g2let());
assertEquals(153, g2nodecl());
assertEquals(153, g3());
assertEquals(153, g3let());
assertEquals(153, g3nodecl());
assertEquals(153, g4());
assertEquals(153, g5());
}
test();
test();
%OptimizeFunctionOnNextCall(test);
test();
})();
// Test tail calls from try-catch constructs.
(function() {
function tc1(a) {
try {
f_153([f_153, tc1, test]);
return f_153([f_153, tc1, test]);
} catch(e) {
f_153([f_153, tc1, test]);
}
}
function tc2(a) {
try {
f_153([f_153, tc2, test]);
throw new Error("boom");
} catch(e) {
f_153([f_153, tc2, test]);
return f_153([f_153, test]);
}
}
function tc3(a) {
try {
f_153([f_153, tc3, test]);
throw new Error("boom");
} catch(e) {
f_153([f_153, tc3, test]);
}
f_153([f_153, tc3, test]);
return f_153([f_153, test]);
}
function test() {
assertEquals(153, tc1());
assertEquals(153, tc2());
assertEquals(153, tc3());
}
test();
test();
%OptimizeFunctionOnNextCall(test);
test();
})();
// Test tail calls from try-finally constructs.
(function() {
function tf1(a) {
try {
f_153([f_153, tf1, test]);
return f_153([f_153, tf1, test]);
} finally {
f_153([f_153, tf1, test]);
}
}
function tf2(a) {
try {
f_153([f_153, tf2, test]);
throw new Error("boom");
} finally {
f_153([f_153, tf2, test]);
return f_153([f_153, test]);
}
}
function tf3(a) {
try {
f_153([f_153, tf3, test]);
} finally {
f_153([f_153, tf3, test]);
}
return f_153([f_153, test]);
}
function test() {
assertEquals(153, tf1());
assertEquals(153, tf2());
assertEquals(153, tf3());
}
test();
test();
%OptimizeFunctionOnNextCall(test);
test();
})();
// Test tail calls from try-catch-finally constructs.
(function() {
function tcf1(a) {
try {
f_153([f_153, tcf1, test]);
return f_153([f_153, tcf1, test]);
} catch(e) {
} finally {
f_153([f_153, tcf1, test]);
}
}
function tcf2(a) {
try {
f_153([f_153, tcf2, test]);
throw new Error("boom");
} catch(e) {
f_153([f_153, tcf2, test]);
return f_153([f_153, tcf2, test]);
} finally {
f_153([f_153, tcf2, test]);
}
}
function tcf3(a) {
try {
f_153([f_153, tcf3, test]);
throw new Error("boom");
} catch(e) {
f_153([f_153, tcf3, test]);
} finally {
f_153([f_153, tcf3, test]);
return f_153([f_153, test]);
}
}
function tcf4(a) {
try {
f_153([f_153, tcf4, test]);
throw new Error("boom");
} catch(e) {
f_153([f_153, tcf4, test]);
} finally {
f_153([f_153, tcf4, test]);
}
return f_153([f_153, test]);
}
function test() {
assertEquals(153, tcf1());
assertEquals(153, tcf2());
assertEquals(153, tcf3());
assertEquals(153, tcf4());
}
test();
test();
%OptimizeFunctionOnNextCall(test);
test();
})();
// Test tail calls from arrow functions.
(function () {
function g1(a) {
return (() => { return f_153([f_153, test]); })();
}
function g2(a) {
return (() => f_153([f_153, test]))();
}
function g3(a) {
var closure = () => f([f, closure, test], true)
? f_153([f_153, test])
: f_153([f_153, test]);
return closure();
}
function test() {
assertEquals(153, g1());
assertEquals(153, g2());
assertEquals(153, g3());
}
test();
test();
%OptimizeFunctionOnNextCall(test);
test();
})();
// Test tail calls from do expressions.
(function () {
function g1(a) {
var a = do { return f_153([f_153, test]); 42; };
return a;
}
function test() {
assertEquals(153, g1());
}
test();
test();
%OptimizeFunctionOnNextCall(test);
test();
})();

4
test/mjsunit/mjsunit.status
View File

@ -137,7 +137,6 @@
# Slow tests.
'copy-on-write-assert': [PASS, SLOW],
'es6/tail-call-megatest*': [PASS, SLOW, FAST_VARIANTS, ['tsan', SKIP]],
'es6/typedarray-construct-offset-not-smi': [PASS, SLOW],
'harmony/regexp-property-script-extensions': [PASS, SLOW],
'numops-fuzz-part*': [PASS, ['mode == debug', SLOW]],
@ -565,9 +564,6 @@
# Deopting uses just enough memory to make this one OOM.
'regress/regress-3976': [SKIP],
# Too slow.
'es6/tail-call-megatest*': [SKIP],
# Forced optimisation path tests.
'shared-function-tier-up-turbo': [SKIP],

2
test/mjsunit/regress/regress-593299.js
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@ -2,8 +2,6 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --harmony-tailcalls
"use strict";
function h(global) { return global.boom(); }

2
test/mjsunit/regress/regress-crbug-537444.js
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --harmony-tailcalls --allow-natives-syntax
// Flags: --allow-natives-syntax
"use strict";

2
test/mjsunit/regress/regress-crbug-593697-2.js
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
// Flags: --allow-natives-syntax
"use strict";

2
test/mjsunit/regress/regress-crbug-595615.js
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
// Flags: --allow-natives-syntax
"use strict";

2
test/mjsunit/regress/regress-crbug-598998.js
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --harmony-tailcalls --allow-natives-syntax
// Flags: --allow-natives-syntax
"use strict";

2
test/mjsunit/regress/regress-crbug-601617.js
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
// Flags: --allow-natives-syntax
function h() {
var res = g.arguments[0].x;

2
test/mjsunit/regress/regress-crbug-604680.js
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
// Flags: --allow-natives-syntax
function h() {
var res = g.arguments;

2
test/mjsunit/regress/regress-crbug-608278.js
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --harmony-tailcalls --allow-natives-syntax
// Flags: --allow-natives-syntax
"use strict";

2
test/mjsunit/regress/regress-crbug-648539.js
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls
// Flags: --allow-natives-syntax
function f() {
"use strict";

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