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[interpreter] Ensure optimizations preserve source positions.

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The optimization stages in the bytecode generation pipeline must
preserve source position information. Failure to preserve
source position information could result in single stepping
in the debugger misbehaving or mis-reporting in exception stack traces.

This change adds tests intended to check optimizations do not damage
source position info.

BUG=v8:4280
LOG=N

Review-Url: https://codereview.chromium.org/2042633002
Cr-Commit-Position: refs/heads/master@{#36855}
This commit is contained in:
oth 2016-06-09 05:03:51 -07:00 committed by Commit bot
parent 172ddf4250
commit a9af61d002
11 changed files with 701 additions and 160 deletions
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25
src/interpreter/bytecode-peephole-optimizer.cc
View File

@ -173,6 +173,7 @@ namespace {
void TransformLdaStarToLdrLdar(Bytecode new_bytecode, BytecodeNode* const last, void TransformLdaStarToLdrLdar(Bytecode new_bytecode, BytecodeNode* const last,
BytecodeNode* const current) { BytecodeNode* const current) {
DCHECK_EQ(current->bytecode(), Bytecode::kStar); DCHECK_EQ(current->bytecode(), Bytecode::kStar);
// //
// An example transformation here would be: // An example transformation here would be:
// //
@ -186,20 +187,17 @@ void TransformLdaStarToLdrLdar(Bytecode new_bytecode, BytecodeNode* const last,
last->Transform(new_bytecode, current->operand(0), current->operand_scale()); last->Transform(new_bytecode, current->operand(0), current->operand_scale());
current->set_bytecode(Bytecode::kLdar, current->operand(0), current->set_bytecode(Bytecode::kLdar, current->operand(0),
current->operand_scale()); current->operand_scale());
// If there was a source position on |current| transfer it to the
// updated |last| to maintain the debugger's causal view. ie. if an
// expression position LdrGlobal is the bytecode that could throw
// and if a statement position it needs to be placed before the
// store to R occurs.
last->source_info().Update(current->source_info());
current->source_info().set_invalid();
} }
} // namespace } // namespace
bool BytecodePeepholeOptimizer::ChangeLdaToLdr(BytecodeNode* const current) { bool BytecodePeepholeOptimizer::TransformLastAndCurrentBytecodes(
if (current->bytecode() == Bytecode::kStar) { BytecodeNode* const current) {
if (current->bytecode() == Bytecode::kStar &&
!current->source_info().is_statement()) {
// Note: If the Star is tagged with a statement position, we can't
// perform this transform as the store to the register will
// have the wrong ordering for stepping in the debugger.
switch (last_.bytecode()) { switch (last_.bytecode()) {
case Bytecode::kLdaNamedProperty: case Bytecode::kLdaNamedProperty:
TransformLdaStarToLdrLdar(Bytecode::kLdrNamedProperty, &last_, current); TransformLdaStarToLdrLdar(Bytecode::kLdrNamedProperty, &last_, current);
@ -252,10 +250,10 @@ bool BytecodePeepholeOptimizer::RemoveToBooleanFromLogicalNot(
return can_remove; return can_remove;
} }
bool BytecodePeepholeOptimizer::TransformLastAndCurrentBytecodes( bool BytecodePeepholeOptimizer::TransformCurrentBytecode(
BytecodeNode* const current) { BytecodeNode* const current) {
return RemoveToBooleanFromJump(current) || return RemoveToBooleanFromJump(current) ||
RemoveToBooleanFromLogicalNot(current) || ChangeLdaToLdr(current); RemoveToBooleanFromLogicalNot(current);
} }
bool BytecodePeepholeOptimizer::CanElideLast( bool BytecodePeepholeOptimizer::CanElideLast(
@ -283,7 +281,8 @@ bool BytecodePeepholeOptimizer::CanElideLast(
BytecodeNode* BytecodePeepholeOptimizer::Optimize(BytecodeNode* current) { BytecodeNode* BytecodePeepholeOptimizer::Optimize(BytecodeNode* current) {
TryToRemoveLastExpressionPosition(current); TryToRemoveLastExpressionPosition(current);
if (TransformLastAndCurrentBytecodes(current)) { if (TransformCurrentBytecode(current) ||
TransformLastAndCurrentBytecodes(current)) {
return current; return current;
} }

2
src/interpreter/bytecode-peephole-optimizer.h
View File

@ -37,6 +37,7 @@ class BytecodePeepholeOptimizer final : public BytecodePipelineStage,
void Flush(); void Flush();
void TryToRemoveLastExpressionPosition(const BytecodeNode* const current); void TryToRemoveLastExpressionPosition(const BytecodeNode* const current);
bool TransformCurrentBytecode(BytecodeNode* const current);
bool TransformLastAndCurrentBytecodes(BytecodeNode* const current); bool TransformLastAndCurrentBytecodes(BytecodeNode* const current);
bool CanElideCurrent(const BytecodeNode* const current) const; bool CanElideCurrent(const BytecodeNode* const current) const;
bool CanElideLast(const BytecodeNode* const current) const; bool CanElideLast(const BytecodeNode* const current) const;
@ -46,7 +47,6 @@ class BytecodePeepholeOptimizer final : public BytecodePipelineStage,
// Simple substitution methods. // Simple substitution methods.
bool RemoveToBooleanFromJump(BytecodeNode* const current); bool RemoveToBooleanFromJump(BytecodeNode* const current);
bool RemoveToBooleanFromLogicalNot(BytecodeNode* const current); bool RemoveToBooleanFromLogicalNot(BytecodeNode* const current);
bool ChangeLdaToLdr(BytecodeNode* const current);
void InvalidateLast(); void InvalidateLast();
bool LastIsValid() const; bool LastIsValid() const;

40
src/interpreter/bytecodes.cc
View File

@ -107,7 +107,6 @@ Bytecode Bytecodes::FromByte(uint8_t value) {
return bytecode; return bytecode;
} }
// static // static
Bytecode Bytecodes::GetDebugBreak(Bytecode bytecode) { Bytecode Bytecodes::GetDebugBreak(Bytecode bytecode) {
DCHECK(!IsDebugBreak(bytecode)); DCHECK(!IsDebugBreak(bytecode));
@ -140,7 +139,6 @@ int Bytecodes::Size(Bytecode bytecode, OperandScale operand_scale) {
return size; return size;
} }
// static // static
size_t Bytecodes::ReturnCount(Bytecode bytecode) { size_t Bytecodes::ReturnCount(Bytecode bytecode) {
return bytecode == Bytecode::kReturn ? 1 : 0; return bytecode == Bytecode::kReturn ? 1 : 0;
@ -160,7 +158,6 @@ int Bytecodes::NumberOfOperands(Bytecode bytecode) {
return 0; return 0;
} }
// static // static
int Bytecodes::NumberOfRegisterOperands(Bytecode bytecode) { int Bytecodes::NumberOfRegisterOperands(Bytecode bytecode) {
DCHECK(bytecode <= Bytecode::kLast); DCHECK(bytecode <= Bytecode::kLast);
@ -276,6 +273,34 @@ bool Bytecodes::IsAccumulatorLoadWithoutEffects(Bytecode bytecode) {
} }
} }
// static
bool Bytecodes::IsJumpWithoutEffects(Bytecode bytecode) {
return IsJump(bytecode) && !IsJumpIfToBoolean(bytecode);
}
// static
bool Bytecodes::IsRegisterLoadWithoutEffects(Bytecode bytecode) {
switch (bytecode) {
case Bytecode::kMov:
case Bytecode::kPopContext:
case Bytecode::kPushContext:
case Bytecode::kStar:
case Bytecode::kLdrUndefined:
return true;
default:
return false;
}
}
// static
bool Bytecodes::IsWithoutExternalSideEffects(Bytecode bytecode) {
// These bytecodes only manipulate interpreter frame state and will
// never throw.
return (IsAccumulatorLoadWithoutEffects(bytecode) ||
IsRegisterLoadWithoutEffects(bytecode) ||
bytecode == Bytecode::kNop || IsJumpWithoutEffects(bytecode));
}
// static // static
OperandType Bytecodes::GetOperandType(Bytecode bytecode, int i) { OperandType Bytecodes::GetOperandType(Bytecode bytecode, int i) {
DCHECK_LE(bytecode, Bytecode::kLast); DCHECK_LE(bytecode, Bytecode::kLast);
@ -487,15 +512,6 @@ bool Bytecodes::IsPrefixScalingBytecode(Bytecode bytecode) {
} }
} }
// static
bool Bytecodes::IsWithoutExternalSideEffects(Bytecode bytecode) {
// These bytecodes only manipulate interpreter frame state and will
// never throw.
return (IsAccumulatorLoadWithoutEffects(bytecode) || IsLdarOrStar(bytecode) ||
bytecode == Bytecode::kMov || bytecode == Bytecode::kNop ||
IsJump(bytecode));
}
// static // static
bool Bytecodes::IsJumpOrReturn(Bytecode bytecode) { bool Bytecodes::IsJumpOrReturn(Bytecode bytecode) {
return bytecode == Bytecode::kReturn || IsJump(bytecode); return bytecode == Bytecode::kReturn || IsJump(bytecode);

18
src/interpreter/bytecodes.h
View File

@ -495,10 +495,22 @@ class Bytecodes {
// Return true if |bytecode| writes the accumulator with a boolean value. // Return true if |bytecode| writes the accumulator with a boolean value.
static bool WritesBooleanToAccumulator(Bytecode bytecode); static bool WritesBooleanToAccumulator(Bytecode bytecode);
// Return true if |bytecode| is an accumulator load bytecode, // Return true if |bytecode| is an accumulator load without effects,
// e.g. LdaConstant, LdaTrue, Ldar. // e.g. LdaConstant, LdaTrue, Ldar.
static bool IsAccumulatorLoadWithoutEffects(Bytecode bytecode); static bool IsAccumulatorLoadWithoutEffects(Bytecode bytecode);
// Return true if |bytecode| is a jump without effects,
// e.g. any jump excluding those that include type coercion like
// JumpIfTrueToBoolean.
static bool IsJumpWithoutEffects(Bytecode bytecode);
// Return true if |bytecode| is a register load without effects,
// e.g. Mov, Star, LdrUndefined.
static bool IsRegisterLoadWithoutEffects(Bytecode bytecode);
// Returns true if |bytecode| has no effects.
static bool IsWithoutExternalSideEffects(Bytecode bytecode);
// Returns the i-th operand of |bytecode|. // Returns the i-th operand of |bytecode|.
static OperandType GetOperandType(Bytecode bytecode, int i); static OperandType GetOperandType(Bytecode bytecode, int i);
@ -588,10 +600,6 @@ class Bytecodes {
// Returns true if the bytecode is a scaling prefix bytecode. // Returns true if the bytecode is a scaling prefix bytecode.
static bool IsPrefixScalingBytecode(Bytecode bytecode); static bool IsPrefixScalingBytecode(Bytecode bytecode);
// Returns true if the bytecode has no effects outside the current
// interpreter frame.
static bool IsWithoutExternalSideEffects(Bytecode bytecode);
// Returns true if |operand_type| is any type of register operand. // Returns true if |operand_type| is any type of register operand.
static bool IsRegisterOperandType(OperandType operand_type); static bool IsRegisterOperandType(OperandType operand_type);

3
test/cctest/BUILD.gn
View File

@ -72,9 +72,12 @@ executable("cctest") {
"interpreter/bytecode-expectations-printer.cc", "interpreter/bytecode-expectations-printer.cc",
"interpreter/bytecode-expectations-printer.h", "interpreter/bytecode-expectations-printer.h",
"interpreter/interpreter-tester.cc", "interpreter/interpreter-tester.cc",
"interpreter/source-position-matcher.cc",
"interpreter/source-position-matcher.h",
"interpreter/test-bytecode-generator.cc", "interpreter/test-bytecode-generator.cc",
"interpreter/test-interpreter-intrinsics.cc", "interpreter/test-interpreter-intrinsics.cc",
"interpreter/test-interpreter.cc", "interpreter/test-interpreter.cc",
"interpreter/test-source-positions.cc",
"libsampler/test-sampler.cc", "libsampler/test-sampler.cc",
"print-extension.cc", "print-extension.cc",
"profiler-extension.cc", "profiler-extension.cc",

3
test/cctest/cctest.gyp
View File

@ -91,9 +91,12 @@
'expression-type-collector.cc', 'expression-type-collector.cc',
'expression-type-collector.h', 'expression-type-collector.h',
'interpreter/interpreter-tester.cc', 'interpreter/interpreter-tester.cc',
'interpreter/source-position-matcher.cc',
'interpreter/source-position-matcher.h',
'interpreter/test-bytecode-generator.cc', 'interpreter/test-bytecode-generator.cc',
'interpreter/test-interpreter.cc', 'interpreter/test-interpreter.cc',
'interpreter/test-interpreter-intrinsics.cc', 'interpreter/test-interpreter-intrinsics.cc',
'interpreter/test-source-positions.cc',
'interpreter/bytecode-expectations-printer.cc', 'interpreter/bytecode-expectations-printer.cc',
'interpreter/bytecode-expectations-printer.h', 'interpreter/bytecode-expectations-printer.h',
'gay-fixed.cc', 'gay-fixed.cc',

256
test/cctest/interpreter/bytecode_expectations/PropertyLoads.golden
View File

@ -790,515 +790,515 @@ bytecodes: [
/* 10 E> */ B(StackCheck), /* 10 E> */ B(StackCheck),
/* 30 S> */ B(Nop), /* 30 S> */ B(Nop),
/* 35 E> */ B(Ldar), R(arg1), /* 35 E> */ B(Ldar), R(arg1),
/* 32 E> */ B(LdrKeyedProperty), R(arg0), U8(1), R(0), B(LdrKeyedProperty), R(arg0), U8(1), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 42 S> */ B(Nop), /* 42 S> */ B(Nop),
/* 47 E> */ B(Ldar), R(arg1), /* 47 E> */ B(Ldar), R(arg1),
/* 44 E> */ B(LdrKeyedProperty), R(arg0), U8(3), R(0), B(LdrKeyedProperty), R(arg0), U8(3), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 54 S> */ B(Nop), /* 54 S> */ B(Nop),
/* 59 E> */ B(Ldar), R(arg1), /* 59 E> */ B(Ldar), R(arg1),
/* 56 E> */ B(LdrKeyedProperty), R(arg0), U8(5), R(0), B(LdrKeyedProperty), R(arg0), U8(5), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 66 S> */ B(Nop), /* 66 S> */ B(Nop),
/* 71 E> */ B(Ldar), R(arg1), /* 71 E> */ B(Ldar), R(arg1),
/* 68 E> */ B(LdrKeyedProperty), R(arg0), U8(7), R(0), B(LdrKeyedProperty), R(arg0), U8(7), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 78 S> */ B(Nop), /* 78 S> */ B(Nop),
/* 83 E> */ B(Ldar), R(arg1), /* 83 E> */ B(Ldar), R(arg1),
/* 80 E> */ B(LdrKeyedProperty), R(arg0), U8(9), R(0), B(LdrKeyedProperty), R(arg0), U8(9), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 90 S> */ B(Nop), /* 90 S> */ B(Nop),
/* 95 E> */ B(Ldar), R(arg1), /* 95 E> */ B(Ldar), R(arg1),
/* 92 E> */ B(LdrKeyedProperty), R(arg0), U8(11), R(0), B(LdrKeyedProperty), R(arg0), U8(11), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 102 S> */ B(Nop), /* 102 S> */ B(Nop),
/* 107 E> */ B(Ldar), R(arg1), /* 107 E> */ B(Ldar), R(arg1),
/* 104 E> */ B(LdrKeyedProperty), R(arg0), U8(13), R(0), B(LdrKeyedProperty), R(arg0), U8(13), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 114 S> */ B(Nop), /* 114 S> */ B(Nop),
/* 119 E> */ B(Ldar), R(arg1), /* 119 E> */ B(Ldar), R(arg1),
/* 116 E> */ B(LdrKeyedProperty), R(arg0), U8(15), R(0), B(LdrKeyedProperty), R(arg0), U8(15), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 126 S> */ B(Nop), /* 126 S> */ B(Nop),
/* 131 E> */ B(Ldar), R(arg1), /* 131 E> */ B(Ldar), R(arg1),
/* 128 E> */ B(LdrKeyedProperty), R(arg0), U8(17), R(0), B(LdrKeyedProperty), R(arg0), U8(17), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 138 S> */ B(Nop), /* 138 S> */ B(Nop),
/* 143 E> */ B(Ldar), R(arg1), /* 143 E> */ B(Ldar), R(arg1),
/* 140 E> */ B(LdrKeyedProperty), R(arg0), U8(19), R(0), B(LdrKeyedProperty), R(arg0), U8(19), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 150 S> */ B(Nop), /* 150 S> */ B(Nop),
/* 155 E> */ B(Ldar), R(arg1), /* 155 E> */ B(Ldar), R(arg1),
/* 152 E> */ B(LdrKeyedProperty), R(arg0), U8(21), R(0), B(LdrKeyedProperty), R(arg0), U8(21), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 162 S> */ B(Nop), /* 162 S> */ B(Nop),
/* 167 E> */ B(Ldar), R(arg1), /* 167 E> */ B(Ldar), R(arg1),
/* 164 E> */ B(LdrKeyedProperty), R(arg0), U8(23), R(0), B(LdrKeyedProperty), R(arg0), U8(23), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 174 S> */ B(Nop), /* 174 S> */ B(Nop),
/* 179 E> */ B(Ldar), R(arg1), /* 179 E> */ B(Ldar), R(arg1),
/* 176 E> */ B(LdrKeyedProperty), R(arg0), U8(25), R(0), B(LdrKeyedProperty), R(arg0), U8(25), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 186 S> */ B(Nop), /* 186 S> */ B(Nop),
/* 191 E> */ B(Ldar), R(arg1), /* 191 E> */ B(Ldar), R(arg1),
/* 188 E> */ B(LdrKeyedProperty), R(arg0), U8(27), R(0), B(LdrKeyedProperty), R(arg0), U8(27), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 198 S> */ B(Nop), /* 198 S> */ B(Nop),
/* 203 E> */ B(Ldar), R(arg1), /* 203 E> */ B(Ldar), R(arg1),
/* 200 E> */ B(LdrKeyedProperty), R(arg0), U8(29), R(0), B(LdrKeyedProperty), R(arg0), U8(29), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 210 S> */ B(Nop), /* 210 S> */ B(Nop),
/* 215 E> */ B(Ldar), R(arg1), /* 215 E> */ B(Ldar), R(arg1),
/* 212 E> */ B(LdrKeyedProperty), R(arg0), U8(31), R(0), B(LdrKeyedProperty), R(arg0), U8(31), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 222 S> */ B(Nop), /* 222 S> */ B(Nop),
/* 227 E> */ B(Ldar), R(arg1), /* 227 E> */ B(Ldar), R(arg1),
/* 224 E> */ B(LdrKeyedProperty), R(arg0), U8(33), R(0), B(LdrKeyedProperty), R(arg0), U8(33), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 234 S> */ B(Nop), /* 234 S> */ B(Nop),
/* 239 E> */ B(Ldar), R(arg1), /* 239 E> */ B(Ldar), R(arg1),
/* 236 E> */ B(LdrKeyedProperty), R(arg0), U8(35), R(0), B(LdrKeyedProperty), R(arg0), U8(35), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 246 S> */ B(Nop), /* 246 S> */ B(Nop),
/* 251 E> */ B(Ldar), R(arg1), /* 251 E> */ B(Ldar), R(arg1),
/* 248 E> */ B(LdrKeyedProperty), R(arg0), U8(37), R(0), B(LdrKeyedProperty), R(arg0), U8(37), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 258 S> */ B(Nop), /* 258 S> */ B(Nop),
/* 263 E> */ B(Ldar), R(arg1), /* 263 E> */ B(Ldar), R(arg1),
/* 260 E> */ B(LdrKeyedProperty), R(arg0), U8(39), R(0), B(LdrKeyedProperty), R(arg0), U8(39), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 270 S> */ B(Nop), /* 270 S> */ B(Nop),
/* 275 E> */ B(Ldar), R(arg1), /* 275 E> */ B(Ldar), R(arg1),
/* 272 E> */ B(LdrKeyedProperty), R(arg0), U8(41), R(0), B(LdrKeyedProperty), R(arg0), U8(41), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 282 S> */ B(Nop), /* 282 S> */ B(Nop),
/* 287 E> */ B(Ldar), R(arg1), /* 287 E> */ B(Ldar), R(arg1),
/* 284 E> */ B(LdrKeyedProperty), R(arg0), U8(43), R(0), B(LdrKeyedProperty), R(arg0), U8(43), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 294 S> */ B(Nop), /* 294 S> */ B(Nop),
/* 299 E> */ B(Ldar), R(arg1), /* 299 E> */ B(Ldar), R(arg1),
/* 296 E> */ B(LdrKeyedProperty), R(arg0), U8(45), R(0), B(LdrKeyedProperty), R(arg0), U8(45), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 306 S> */ B(Nop), /* 306 S> */ B(Nop),
/* 311 E> */ B(Ldar), R(arg1), /* 311 E> */ B(Ldar), R(arg1),
/* 308 E> */ B(LdrKeyedProperty), R(arg0), U8(47), R(0), B(LdrKeyedProperty), R(arg0), U8(47), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 318 S> */ B(Nop), /* 318 S> */ B(Nop),
/* 323 E> */ B(Ldar), R(arg1), /* 323 E> */ B(Ldar), R(arg1),
/* 320 E> */ B(LdrKeyedProperty), R(arg0), U8(49), R(0), B(LdrKeyedProperty), R(arg0), U8(49), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 330 S> */ B(Nop), /* 330 S> */ B(Nop),
/* 335 E> */ B(Ldar), R(arg1), /* 335 E> */ B(Ldar), R(arg1),
/* 332 E> */ B(LdrKeyedProperty), R(arg0), U8(51), R(0), B(LdrKeyedProperty), R(arg0), U8(51), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 342 S> */ B(Nop), /* 342 S> */ B(Nop),
/* 347 E> */ B(Ldar), R(arg1), /* 347 E> */ B(Ldar), R(arg1),
/* 344 E> */ B(LdrKeyedProperty), R(arg0), U8(53), R(0), B(LdrKeyedProperty), R(arg0), U8(53), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 354 S> */ B(Nop), /* 354 S> */ B(Nop),
/* 359 E> */ B(Ldar), R(arg1), /* 359 E> */ B(Ldar), R(arg1),
/* 356 E> */ B(LdrKeyedProperty), R(arg0), U8(55), R(0), B(LdrKeyedProperty), R(arg0), U8(55), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 366 S> */ B(Nop), /* 366 S> */ B(Nop),
/* 371 E> */ B(Ldar), R(arg1), /* 371 E> */ B(Ldar), R(arg1),
/* 368 E> */ B(LdrKeyedProperty), R(arg0), U8(57), R(0), B(LdrKeyedProperty), R(arg0), U8(57), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 378 S> */ B(Nop), /* 378 S> */ B(Nop),
/* 383 E> */ B(Ldar), R(arg1), /* 383 E> */ B(Ldar), R(arg1),
/* 380 E> */ B(LdrKeyedProperty), R(arg0), U8(59), R(0), B(LdrKeyedProperty), R(arg0), U8(59), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 390 S> */ B(Nop), /* 390 S> */ B(Nop),
/* 395 E> */ B(Ldar), R(arg1), /* 395 E> */ B(Ldar), R(arg1),
/* 392 E> */ B(LdrKeyedProperty), R(arg0), U8(61), R(0), B(LdrKeyedProperty), R(arg0), U8(61), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 402 S> */ B(Nop), /* 402 S> */ B(Nop),
/* 407 E> */ B(Ldar), R(arg1), /* 407 E> */ B(Ldar), R(arg1),
/* 404 E> */ B(LdrKeyedProperty), R(arg0), U8(63), R(0), B(LdrKeyedProperty), R(arg0), U8(63), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 414 S> */ B(Nop), /* 414 S> */ B(Nop),
/* 419 E> */ B(Ldar), R(arg1), /* 419 E> */ B(Ldar), R(arg1),
/* 416 E> */ B(LdrKeyedProperty), R(arg0), U8(65), R(0), B(LdrKeyedProperty), R(arg0), U8(65), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 426 S> */ B(Nop), /* 426 S> */ B(Nop),
/* 431 E> */ B(Ldar), R(arg1), /* 431 E> */ B(Ldar), R(arg1),
/* 428 E> */ B(LdrKeyedProperty), R(arg0), U8(67), R(0), B(LdrKeyedProperty), R(arg0), U8(67), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 438 S> */ B(Nop), /* 438 S> */ B(Nop),
/* 443 E> */ B(Ldar), R(arg1), /* 443 E> */ B(Ldar), R(arg1),
/* 440 E> */ B(LdrKeyedProperty), R(arg0), U8(69), R(0), B(LdrKeyedProperty), R(arg0), U8(69), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 450 S> */ B(Nop), /* 450 S> */ B(Nop),
/* 455 E> */ B(Ldar), R(arg1), /* 455 E> */ B(Ldar), R(arg1),
/* 452 E> */ B(LdrKeyedProperty), R(arg0), U8(71), R(0), B(LdrKeyedProperty), R(arg0), U8(71), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 462 S> */ B(Nop), /* 462 S> */ B(Nop),
/* 467 E> */ B(Ldar), R(arg1), /* 467 E> */ B(Ldar), R(arg1),
/* 464 E> */ B(LdrKeyedProperty), R(arg0), U8(73), R(0), B(LdrKeyedProperty), R(arg0), U8(73), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 474 S> */ B(Nop), /* 474 S> */ B(Nop),
/* 479 E> */ B(Ldar), R(arg1), /* 479 E> */ B(Ldar), R(arg1),
/* 476 E> */ B(LdrKeyedProperty), R(arg0), U8(75), R(0), B(LdrKeyedProperty), R(arg0), U8(75), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 486 S> */ B(Nop), /* 486 S> */ B(Nop),
/* 491 E> */ B(Ldar), R(arg1), /* 491 E> */ B(Ldar), R(arg1),
/* 488 E> */ B(LdrKeyedProperty), R(arg0), U8(77), R(0), B(LdrKeyedProperty), R(arg0), U8(77), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 498 S> */ B(Nop), /* 498 S> */ B(Nop),
/* 503 E> */ B(Ldar), R(arg1), /* 503 E> */ B(Ldar), R(arg1),
/* 500 E> */ B(LdrKeyedProperty), R(arg0), U8(79), R(0), B(LdrKeyedProperty), R(arg0), U8(79), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 510 S> */ B(Nop), /* 510 S> */ B(Nop),
/* 515 E> */ B(Ldar), R(arg1), /* 515 E> */ B(Ldar), R(arg1),
/* 512 E> */ B(LdrKeyedProperty), R(arg0), U8(81), R(0), B(LdrKeyedProperty), R(arg0), U8(81), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 522 S> */ B(Nop), /* 522 S> */ B(Nop),
/* 527 E> */ B(Ldar), R(arg1), /* 527 E> */ B(Ldar), R(arg1),
/* 524 E> */ B(LdrKeyedProperty), R(arg0), U8(83), R(0), B(LdrKeyedProperty), R(arg0), U8(83), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 534 S> */ B(Nop), /* 534 S> */ B(Nop),
/* 539 E> */ B(Ldar), R(arg1), /* 539 E> */ B(Ldar), R(arg1),
/* 536 E> */ B(LdrKeyedProperty), R(arg0), U8(85), R(0), B(LdrKeyedProperty), R(arg0), U8(85), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 546 S> */ B(Nop), /* 546 S> */ B(Nop),
/* 551 E> */ B(Ldar), R(arg1), /* 551 E> */ B(Ldar), R(arg1),
/* 548 E> */ B(LdrKeyedProperty), R(arg0), U8(87), R(0), B(LdrKeyedProperty), R(arg0), U8(87), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 558 S> */ B(Nop), /* 558 S> */ B(Nop),
/* 563 E> */ B(Ldar), R(arg1), /* 563 E> */ B(Ldar), R(arg1),
/* 560 E> */ B(LdrKeyedProperty), R(arg0), U8(89), R(0), B(LdrKeyedProperty), R(arg0), U8(89), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 570 S> */ B(Nop), /* 570 S> */ B(Nop),
/* 575 E> */ B(Ldar), R(arg1), /* 575 E> */ B(Ldar), R(arg1),
/* 572 E> */ B(LdrKeyedProperty), R(arg0), U8(91), R(0), B(LdrKeyedProperty), R(arg0), U8(91), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 582 S> */ B(Nop), /* 582 S> */ B(Nop),
/* 587 E> */ B(Ldar), R(arg1), /* 587 E> */ B(Ldar), R(arg1),
/* 584 E> */ B(LdrKeyedProperty), R(arg0), U8(93), R(0), B(LdrKeyedProperty), R(arg0), U8(93), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 594 S> */ B(Nop), /* 594 S> */ B(Nop),
/* 599 E> */ B(Ldar), R(arg1), /* 599 E> */ B(Ldar), R(arg1),
/* 596 E> */ B(LdrKeyedProperty), R(arg0), U8(95), R(0), B(LdrKeyedProperty), R(arg0), U8(95), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 606 S> */ B(Nop), /* 606 S> */ B(Nop),
/* 611 E> */ B(Ldar), R(arg1), /* 611 E> */ B(Ldar), R(arg1),
/* 608 E> */ B(LdrKeyedProperty), R(arg0), U8(97), R(0), B(LdrKeyedProperty), R(arg0), U8(97), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 618 S> */ B(Nop), /* 618 S> */ B(Nop),
/* 623 E> */ B(Ldar), R(arg1), /* 623 E> */ B(Ldar), R(arg1),
/* 620 E> */ B(LdrKeyedProperty), R(arg0), U8(99), R(0), B(LdrKeyedProperty), R(arg0), U8(99), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 630 S> */ B(Nop), /* 630 S> */ B(Nop),
/* 635 E> */ B(Ldar), R(arg1), /* 635 E> */ B(Ldar), R(arg1),
/* 632 E> */ B(LdrKeyedProperty), R(arg0), U8(101), R(0), B(LdrKeyedProperty), R(arg0), U8(101), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 642 S> */ B(Nop), /* 642 S> */ B(Nop),
/* 647 E> */ B(Ldar), R(arg1), /* 647 E> */ B(Ldar), R(arg1),
/* 644 E> */ B(LdrKeyedProperty), R(arg0), U8(103), R(0), B(LdrKeyedProperty), R(arg0), U8(103), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 654 S> */ B(Nop), /* 654 S> */ B(Nop),
/* 659 E> */ B(Ldar), R(arg1), /* 659 E> */ B(Ldar), R(arg1),
/* 656 E> */ B(LdrKeyedProperty), R(arg0), U8(105), R(0), B(LdrKeyedProperty), R(arg0), U8(105), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 666 S> */ B(Nop), /* 666 S> */ B(Nop),
/* 671 E> */ B(Ldar), R(arg1), /* 671 E> */ B(Ldar), R(arg1),
/* 668 E> */ B(LdrKeyedProperty), R(arg0), U8(107), R(0), B(LdrKeyedProperty), R(arg0), U8(107), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 678 S> */ B(Nop), /* 678 S> */ B(Nop),
/* 683 E> */ B(Ldar), R(arg1), /* 683 E> */ B(Ldar), R(arg1),
/* 680 E> */ B(LdrKeyedProperty), R(arg0), U8(109), R(0), B(LdrKeyedProperty), R(arg0), U8(109), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 690 S> */ B(Nop), /* 690 S> */ B(Nop),
/* 695 E> */ B(Ldar), R(arg1), /* 695 E> */ B(Ldar), R(arg1),
/* 692 E> */ B(LdrKeyedProperty), R(arg0), U8(111), R(0), B(LdrKeyedProperty), R(arg0), U8(111), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 702 S> */ B(Nop), /* 702 S> */ B(Nop),
/* 707 E> */ B(Ldar), R(arg1), /* 707 E> */ B(Ldar), R(arg1),
/* 704 E> */ B(LdrKeyedProperty), R(arg0), U8(113), R(0), B(LdrKeyedProperty), R(arg0), U8(113), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 714 S> */ B(Nop), /* 714 S> */ B(Nop),
/* 719 E> */ B(Ldar), R(arg1), /* 719 E> */ B(Ldar), R(arg1),
/* 716 E> */ B(LdrKeyedProperty), R(arg0), U8(115), R(0), B(LdrKeyedProperty), R(arg0), U8(115), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 726 S> */ B(Nop), /* 726 S> */ B(Nop),
/* 731 E> */ B(Ldar), R(arg1), /* 731 E> */ B(Ldar), R(arg1),
/* 728 E> */ B(LdrKeyedProperty), R(arg0), U8(117), R(0), B(LdrKeyedProperty), R(arg0), U8(117), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 738 S> */ B(Nop), /* 738 S> */ B(Nop),
/* 743 E> */ B(Ldar), R(arg1), /* 743 E> */ B(Ldar), R(arg1),
/* 740 E> */ B(LdrKeyedProperty), R(arg0), U8(119), R(0), B(LdrKeyedProperty), R(arg0), U8(119), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 750 S> */ B(Nop), /* 750 S> */ B(Nop),
/* 755 E> */ B(Ldar), R(arg1), /* 755 E> */ B(Ldar), R(arg1),
/* 752 E> */ B(LdrKeyedProperty), R(arg0), U8(121), R(0), B(LdrKeyedProperty), R(arg0), U8(121), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 762 S> */ B(Nop), /* 762 S> */ B(Nop),
/* 767 E> */ B(Ldar), R(arg1), /* 767 E> */ B(Ldar), R(arg1),
/* 764 E> */ B(LdrKeyedProperty), R(arg0), U8(123), R(0), B(LdrKeyedProperty), R(arg0), U8(123), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 774 S> */ B(Nop), /* 774 S> */ B(Nop),
/* 779 E> */ B(Ldar), R(arg1), /* 779 E> */ B(Ldar), R(arg1),
/* 776 E> */ B(LdrKeyedProperty), R(arg0), U8(125), R(0), B(LdrKeyedProperty), R(arg0), U8(125), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 786 S> */ B(Nop), /* 786 S> */ B(Nop),
/* 791 E> */ B(Ldar), R(arg1), /* 791 E> */ B(Ldar), R(arg1),
/* 788 E> */ B(LdrKeyedProperty), R(arg0), U8(127), R(0), B(LdrKeyedProperty), R(arg0), U8(127), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 798 S> */ B(Nop), /* 798 S> */ B(Nop),
/* 803 E> */ B(Ldar), R(arg1), /* 803 E> */ B(Ldar), R(arg1),
/* 800 E> */ B(LdrKeyedProperty), R(arg0), U8(129), R(0), B(LdrKeyedProperty), R(arg0), U8(129), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 810 S> */ B(Nop), /* 810 S> */ B(Nop),
/* 815 E> */ B(Ldar), R(arg1), /* 815 E> */ B(Ldar), R(arg1),
/* 812 E> */ B(LdrKeyedProperty), R(arg0), U8(131), R(0), B(LdrKeyedProperty), R(arg0), U8(131), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 822 S> */ B(Nop), /* 822 S> */ B(Nop),
/* 827 E> */ B(Ldar), R(arg1), /* 827 E> */ B(Ldar), R(arg1),
/* 824 E> */ B(LdrKeyedProperty), R(arg0), U8(133), R(0), B(LdrKeyedProperty), R(arg0), U8(133), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 834 S> */ B(Nop), /* 834 S> */ B(Nop),
/* 839 E> */ B(Ldar), R(arg1), /* 839 E> */ B(Ldar), R(arg1),
/* 836 E> */ B(LdrKeyedProperty), R(arg0), U8(135), R(0), B(LdrKeyedProperty), R(arg0), U8(135), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 846 S> */ B(Nop), /* 846 S> */ B(Nop),
/* 851 E> */ B(Ldar), R(arg1), /* 851 E> */ B(Ldar), R(arg1),
/* 848 E> */ B(LdrKeyedProperty), R(arg0), U8(137), R(0), B(LdrKeyedProperty), R(arg0), U8(137), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 858 S> */ B(Nop), /* 858 S> */ B(Nop),
/* 863 E> */ B(Ldar), R(arg1), /* 863 E> */ B(Ldar), R(arg1),
/* 860 E> */ B(LdrKeyedProperty), R(arg0), U8(139), R(0), B(LdrKeyedProperty), R(arg0), U8(139), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 870 S> */ B(Nop), /* 870 S> */ B(Nop),
/* 875 E> */ B(Ldar), R(arg1), /* 875 E> */ B(Ldar), R(arg1),
/* 872 E> */ B(LdrKeyedProperty), R(arg0), U8(141), R(0), B(LdrKeyedProperty), R(arg0), U8(141), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 882 S> */ B(Nop), /* 882 S> */ B(Nop),
/* 887 E> */ B(Ldar), R(arg1), /* 887 E> */ B(Ldar), R(arg1),
/* 884 E> */ B(LdrKeyedProperty), R(arg0), U8(143), R(0), B(LdrKeyedProperty), R(arg0), U8(143), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 894 S> */ B(Nop), /* 894 S> */ B(Nop),
/* 899 E> */ B(Ldar), R(arg1), /* 899 E> */ B(Ldar), R(arg1),
/* 896 E> */ B(LdrKeyedProperty), R(arg0), U8(145), R(0), B(LdrKeyedProperty), R(arg0), U8(145), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 906 S> */ B(Nop), /* 906 S> */ B(Nop),
/* 911 E> */ B(Ldar), R(arg1), /* 911 E> */ B(Ldar), R(arg1),
/* 908 E> */ B(LdrKeyedProperty), R(arg0), U8(147), R(0), B(LdrKeyedProperty), R(arg0), U8(147), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 918 S> */ B(Nop), /* 918 S> */ B(Nop),
/* 923 E> */ B(Ldar), R(arg1), /* 923 E> */ B(Ldar), R(arg1),
/* 920 E> */ B(LdrKeyedProperty), R(arg0), U8(149), R(0), B(LdrKeyedProperty), R(arg0), U8(149), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 930 S> */ B(Nop), /* 930 S> */ B(Nop),
/* 935 E> */ B(Ldar), R(arg1), /* 935 E> */ B(Ldar), R(arg1),
/* 932 E> */ B(LdrKeyedProperty), R(arg0), U8(151), R(0), B(LdrKeyedProperty), R(arg0), U8(151), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 942 S> */ B(Nop), /* 942 S> */ B(Nop),
/* 947 E> */ B(Ldar), R(arg1), /* 947 E> */ B(Ldar), R(arg1),
/* 944 E> */ B(LdrKeyedProperty), R(arg0), U8(153), R(0), B(LdrKeyedProperty), R(arg0), U8(153), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 954 S> */ B(Nop), /* 954 S> */ B(Nop),
/* 959 E> */ B(Ldar), R(arg1), /* 959 E> */ B(Ldar), R(arg1),
/* 956 E> */ B(LdrKeyedProperty), R(arg0), U8(155), R(0), B(LdrKeyedProperty), R(arg0), U8(155), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 966 S> */ B(Nop), /* 966 S> */ B(Nop),
/* 971 E> */ B(Ldar), R(arg1), /* 971 E> */ B(Ldar), R(arg1),
/* 968 E> */ B(LdrKeyedProperty), R(arg0), U8(157), R(0), B(LdrKeyedProperty), R(arg0), U8(157), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 978 S> */ B(Nop), /* 978 S> */ B(Nop),
/* 983 E> */ B(Ldar), R(arg1), /* 983 E> */ B(Ldar), R(arg1),
/* 980 E> */ B(LdrKeyedProperty), R(arg0), U8(159), R(0), B(LdrKeyedProperty), R(arg0), U8(159), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 990 S> */ B(Nop), /* 990 S> */ B(Nop),
/* 995 E> */ B(Ldar), R(arg1), /* 995 E> */ B(Ldar), R(arg1),
/* 992 E> */ B(LdrKeyedProperty), R(arg0), U8(161), R(0), B(LdrKeyedProperty), R(arg0), U8(161), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1002 S> */ B(Nop), /* 1002 S> */ B(Nop),
/* 1007 E> */ B(Ldar), R(arg1), /* 1007 E> */ B(Ldar), R(arg1),
/* 1004 E> */ B(LdrKeyedProperty), R(arg0), U8(163), R(0), B(LdrKeyedProperty), R(arg0), U8(163), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1014 S> */ B(Nop), /* 1014 S> */ B(Nop),
/* 1019 E> */ B(Ldar), R(arg1), /* 1019 E> */ B(Ldar), R(arg1),
/* 1016 E> */ B(LdrKeyedProperty), R(arg0), U8(165), R(0), B(LdrKeyedProperty), R(arg0), U8(165), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1026 S> */ B(Nop), /* 1026 S> */ B(Nop),
/* 1031 E> */ B(Ldar), R(arg1), /* 1031 E> */ B(Ldar), R(arg1),
/* 1028 E> */ B(LdrKeyedProperty), R(arg0), U8(167), R(0), B(LdrKeyedProperty), R(arg0), U8(167), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1038 S> */ B(Nop), /* 1038 S> */ B(Nop),
/* 1043 E> */ B(Ldar), R(arg1), /* 1043 E> */ B(Ldar), R(arg1),
/* 1040 E> */ B(LdrKeyedProperty), R(arg0), U8(169), R(0), B(LdrKeyedProperty), R(arg0), U8(169), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1050 S> */ B(Nop), /* 1050 S> */ B(Nop),
/* 1055 E> */ B(Ldar), R(arg1), /* 1055 E> */ B(Ldar), R(arg1),
/* 1052 E> */ B(LdrKeyedProperty), R(arg0), U8(171), R(0), B(LdrKeyedProperty), R(arg0), U8(171), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1062 S> */ B(Nop), /* 1062 S> */ B(Nop),
/* 1067 E> */ B(Ldar), R(arg1), /* 1067 E> */ B(Ldar), R(arg1),
/* 1064 E> */ B(LdrKeyedProperty), R(arg0), U8(173), R(0), B(LdrKeyedProperty), R(arg0), U8(173), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1074 S> */ B(Nop), /* 1074 S> */ B(Nop),
/* 1079 E> */ B(Ldar), R(arg1), /* 1079 E> */ B(Ldar), R(arg1),
/* 1076 E> */ B(LdrKeyedProperty), R(arg0), U8(175), R(0), B(LdrKeyedProperty), R(arg0), U8(175), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1086 S> */ B(Nop), /* 1086 S> */ B(Nop),
/* 1091 E> */ B(Ldar), R(arg1), /* 1091 E> */ B(Ldar), R(arg1),
/* 1088 E> */ B(LdrKeyedProperty), R(arg0), U8(177), R(0), B(LdrKeyedProperty), R(arg0), U8(177), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1098 S> */ B(Nop), /* 1098 S> */ B(Nop),
/* 1103 E> */ B(Ldar), R(arg1), /* 1103 E> */ B(Ldar), R(arg1),
/* 1100 E> */ B(LdrKeyedProperty), R(arg0), U8(179), R(0), B(LdrKeyedProperty), R(arg0), U8(179), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1110 S> */ B(Nop), /* 1110 S> */ B(Nop),
/* 1115 E> */ B(Ldar), R(arg1), /* 1115 E> */ B(Ldar), R(arg1),
/* 1112 E> */ B(LdrKeyedProperty), R(arg0), U8(181), R(0), B(LdrKeyedProperty), R(arg0), U8(181), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1122 S> */ B(Nop), /* 1122 S> */ B(Nop),
/* 1127 E> */ B(Ldar), R(arg1), /* 1127 E> */ B(Ldar), R(arg1),
/* 1124 E> */ B(LdrKeyedProperty), R(arg0), U8(183), R(0), B(LdrKeyedProperty), R(arg0), U8(183), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1134 S> */ B(Nop), /* 1134 S> */ B(Nop),
/* 1139 E> */ B(Ldar), R(arg1), /* 1139 E> */ B(Ldar), R(arg1),
/* 1136 E> */ B(LdrKeyedProperty), R(arg0), U8(185), R(0), B(LdrKeyedProperty), R(arg0), U8(185), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1146 S> */ B(Nop), /* 1146 S> */ B(Nop),
/* 1151 E> */ B(Ldar), R(arg1), /* 1151 E> */ B(Ldar), R(arg1),
/* 1148 E> */ B(LdrKeyedProperty), R(arg0), U8(187), R(0), B(LdrKeyedProperty), R(arg0), U8(187), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1158 S> */ B(Nop), /* 1158 S> */ B(Nop),
/* 1163 E> */ B(Ldar), R(arg1), /* 1163 E> */ B(Ldar), R(arg1),
/* 1160 E> */ B(LdrKeyedProperty), R(arg0), U8(189), R(0), B(LdrKeyedProperty), R(arg0), U8(189), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1170 S> */ B(Nop), /* 1170 S> */ B(Nop),
/* 1175 E> */ B(Ldar), R(arg1), /* 1175 E> */ B(Ldar), R(arg1),
/* 1172 E> */ B(LdrKeyedProperty), R(arg0), U8(191), R(0), B(LdrKeyedProperty), R(arg0), U8(191), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1182 S> */ B(Nop), /* 1182 S> */ B(Nop),
/* 1187 E> */ B(Ldar), R(arg1), /* 1187 E> */ B(Ldar), R(arg1),
/* 1184 E> */ B(LdrKeyedProperty), R(arg0), U8(193), R(0), B(LdrKeyedProperty), R(arg0), U8(193), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1194 S> */ B(Nop), /* 1194 S> */ B(Nop),
/* 1199 E> */ B(Ldar), R(arg1), /* 1199 E> */ B(Ldar), R(arg1),
/* 1196 E> */ B(LdrKeyedProperty), R(arg0), U8(195), R(0), B(LdrKeyedProperty), R(arg0), U8(195), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1206 S> */ B(Nop), /* 1206 S> */ B(Nop),
/* 1211 E> */ B(Ldar), R(arg1), /* 1211 E> */ B(Ldar), R(arg1),
/* 1208 E> */ B(LdrKeyedProperty), R(arg0), U8(197), R(0), B(LdrKeyedProperty), R(arg0), U8(197), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1218 S> */ B(Nop), /* 1218 S> */ B(Nop),
/* 1223 E> */ B(Ldar), R(arg1), /* 1223 E> */ B(Ldar), R(arg1),
/* 1220 E> */ B(LdrKeyedProperty), R(arg0), U8(199), R(0), B(LdrKeyedProperty), R(arg0), U8(199), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1230 S> */ B(Nop), /* 1230 S> */ B(Nop),
/* 1235 E> */ B(Ldar), R(arg1), /* 1235 E> */ B(Ldar), R(arg1),
/* 1232 E> */ B(LdrKeyedProperty), R(arg0), U8(201), R(0), B(LdrKeyedProperty), R(arg0), U8(201), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1242 S> */ B(Nop), /* 1242 S> */ B(Nop),
/* 1247 E> */ B(Ldar), R(arg1), /* 1247 E> */ B(Ldar), R(arg1),
/* 1244 E> */ B(LdrKeyedProperty), R(arg0), U8(203), R(0), B(LdrKeyedProperty), R(arg0), U8(203), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1254 S> */ B(Nop), /* 1254 S> */ B(Nop),
/* 1259 E> */ B(Ldar), R(arg1), /* 1259 E> */ B(Ldar), R(arg1),
/* 1256 E> */ B(LdrKeyedProperty), R(arg0), U8(205), R(0), B(LdrKeyedProperty), R(arg0), U8(205), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1266 S> */ B(Nop), /* 1266 S> */ B(Nop),
/* 1271 E> */ B(Ldar), R(arg1), /* 1271 E> */ B(Ldar), R(arg1),
/* 1268 E> */ B(LdrKeyedProperty), R(arg0), U8(207), R(0), B(LdrKeyedProperty), R(arg0), U8(207), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1278 S> */ B(Nop), /* 1278 S> */ B(Nop),
/* 1283 E> */ B(Ldar), R(arg1), /* 1283 E> */ B(Ldar), R(arg1),
/* 1280 E> */ B(LdrKeyedProperty), R(arg0), U8(209), R(0), B(LdrKeyedProperty), R(arg0), U8(209), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1290 S> */ B(Nop), /* 1290 S> */ B(Nop),
/* 1295 E> */ B(Ldar), R(arg1), /* 1295 E> */ B(Ldar), R(arg1),
/* 1292 E> */ B(LdrKeyedProperty), R(arg0), U8(211), R(0), B(LdrKeyedProperty), R(arg0), U8(211), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1302 S> */ B(Nop), /* 1302 S> */ B(Nop),
/* 1307 E> */ B(Ldar), R(arg1), /* 1307 E> */ B(Ldar), R(arg1),
/* 1304 E> */ B(LdrKeyedProperty), R(arg0), U8(213), R(0), B(LdrKeyedProperty), R(arg0), U8(213), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1314 S> */ B(Nop), /* 1314 S> */ B(Nop),
/* 1319 E> */ B(Ldar), R(arg1), /* 1319 E> */ B(Ldar), R(arg1),
/* 1316 E> */ B(LdrKeyedProperty), R(arg0), U8(215), R(0), B(LdrKeyedProperty), R(arg0), U8(215), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1326 S> */ B(Nop), /* 1326 S> */ B(Nop),
/* 1331 E> */ B(Ldar), R(arg1), /* 1331 E> */ B(Ldar), R(arg1),
/* 1328 E> */ B(LdrKeyedProperty), R(arg0), U8(217), R(0), B(LdrKeyedProperty), R(arg0), U8(217), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1338 S> */ B(Nop), /* 1338 S> */ B(Nop),
/* 1343 E> */ B(Ldar), R(arg1), /* 1343 E> */ B(Ldar), R(arg1),
/* 1340 E> */ B(LdrKeyedProperty), R(arg0), U8(219), R(0), B(LdrKeyedProperty), R(arg0), U8(219), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1350 S> */ B(Nop), /* 1350 S> */ B(Nop),
/* 1355 E> */ B(Ldar), R(arg1), /* 1355 E> */ B(Ldar), R(arg1),
/* 1352 E> */ B(LdrKeyedProperty), R(arg0), U8(221), R(0), B(LdrKeyedProperty), R(arg0), U8(221), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1362 S> */ B(Nop), /* 1362 S> */ B(Nop),
/* 1367 E> */ B(Ldar), R(arg1), /* 1367 E> */ B(Ldar), R(arg1),
/* 1364 E> */ B(LdrKeyedProperty), R(arg0), U8(223), R(0), B(LdrKeyedProperty), R(arg0), U8(223), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1374 S> */ B(Nop), /* 1374 S> */ B(Nop),
/* 1379 E> */ B(Ldar), R(arg1), /* 1379 E> */ B(Ldar), R(arg1),
/* 1376 E> */ B(LdrKeyedProperty), R(arg0), U8(225), R(0), B(LdrKeyedProperty), R(arg0), U8(225), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1386 S> */ B(Nop), /* 1386 S> */ B(Nop),
/* 1391 E> */ B(Ldar), R(arg1), /* 1391 E> */ B(Ldar), R(arg1),
/* 1388 E> */ B(LdrKeyedProperty), R(arg0), U8(227), R(0), B(LdrKeyedProperty), R(arg0), U8(227), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1398 S> */ B(Nop), /* 1398 S> */ B(Nop),
/* 1403 E> */ B(Ldar), R(arg1), /* 1403 E> */ B(Ldar), R(arg1),
/* 1400 E> */ B(LdrKeyedProperty), R(arg0), U8(229), R(0), B(LdrKeyedProperty), R(arg0), U8(229), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1410 S> */ B(Nop), /* 1410 S> */ B(Nop),
/* 1415 E> */ B(Ldar), R(arg1), /* 1415 E> */ B(Ldar), R(arg1),
/* 1412 E> */ B(LdrKeyedProperty), R(arg0), U8(231), R(0), B(LdrKeyedProperty), R(arg0), U8(231), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1422 S> */ B(Nop), /* 1422 S> */ B(Nop),
/* 1427 E> */ B(Ldar), R(arg1), /* 1427 E> */ B(Ldar), R(arg1),
/* 1424 E> */ B(LdrKeyedProperty), R(arg0), U8(233), R(0), B(LdrKeyedProperty), R(arg0), U8(233), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1434 S> */ B(Nop), /* 1434 S> */ B(Nop),
/* 1439 E> */ B(Ldar), R(arg1), /* 1439 E> */ B(Ldar), R(arg1),
/* 1436 E> */ B(LdrKeyedProperty), R(arg0), U8(235), R(0), B(LdrKeyedProperty), R(arg0), U8(235), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1446 S> */ B(Nop), /* 1446 S> */ B(Nop),
/* 1451 E> */ B(Ldar), R(arg1), /* 1451 E> */ B(Ldar), R(arg1),
/* 1448 E> */ B(LdrKeyedProperty), R(arg0), U8(237), R(0), B(LdrKeyedProperty), R(arg0), U8(237), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1458 S> */ B(Nop), /* 1458 S> */ B(Nop),
/* 1463 E> */ B(Ldar), R(arg1), /* 1463 E> */ B(Ldar), R(arg1),
/* 1460 E> */ B(LdrKeyedProperty), R(arg0), U8(239), R(0), B(LdrKeyedProperty), R(arg0), U8(239), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1470 S> */ B(Nop), /* 1470 S> */ B(Nop),
/* 1475 E> */ B(Ldar), R(arg1), /* 1475 E> */ B(Ldar), R(arg1),
/* 1472 E> */ B(LdrKeyedProperty), R(arg0), U8(241), R(0), B(LdrKeyedProperty), R(arg0), U8(241), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1482 S> */ B(Nop), /* 1482 S> */ B(Nop),
/* 1487 E> */ B(Ldar), R(arg1), /* 1487 E> */ B(Ldar), R(arg1),
/* 1484 E> */ B(LdrKeyedProperty), R(arg0), U8(243), R(0), B(LdrKeyedProperty), R(arg0), U8(243), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1494 S> */ B(Nop), /* 1494 S> */ B(Nop),
/* 1499 E> */ B(Ldar), R(arg1), /* 1499 E> */ B(Ldar), R(arg1),
/* 1496 E> */ B(LdrKeyedProperty), R(arg0), U8(245), R(0), B(LdrKeyedProperty), R(arg0), U8(245), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1506 S> */ B(Nop), /* 1506 S> */ B(Nop),
/* 1511 E> */ B(Ldar), R(arg1), /* 1511 E> */ B(Ldar), R(arg1),
/* 1508 E> */ B(LdrKeyedProperty), R(arg0), U8(247), R(0), B(LdrKeyedProperty), R(arg0), U8(247), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1518 S> */ B(Nop), /* 1518 S> */ B(Nop),
/* 1523 E> */ B(Ldar), R(arg1), /* 1523 E> */ B(Ldar), R(arg1),
/* 1520 E> */ B(LdrKeyedProperty), R(arg0), U8(249), R(0), B(LdrKeyedProperty), R(arg0), U8(249), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1530 S> */ B(Nop), /* 1530 S> */ B(Nop),
/* 1535 E> */ B(Ldar), R(arg1), /* 1535 E> */ B(Ldar), R(arg1),
/* 1532 E> */ B(LdrKeyedProperty), R(arg0), U8(251), R(0), B(LdrKeyedProperty), R(arg0), U8(251), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1542 S> */ B(Nop), /* 1542 S> */ B(Nop),
/* 1547 E> */ B(Ldar), R(arg1), /* 1547 E> */ B(Ldar), R(arg1),
/* 1544 E> */ B(LdrKeyedProperty), R(arg0), U8(253), R(0), B(LdrKeyedProperty), R(arg0), U8(253), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1554 S> */ B(Nop), /* 1554 S> */ B(Nop),
/* 1559 E> */ B(Ldar), R(arg1), /* 1559 E> */ B(Ldar), R(arg1),
/* 1556 E> */ B(LdrKeyedProperty), R(arg0), U8(255), R(0), B(LdrKeyedProperty), R(arg0), U8(255), R(0),
B(Ldar), R(0), B(Ldar), R(0),
/* 1566 S> */ B(Nop), /* 1566 S> */ B(Nop),
/* 1574 E> */ B(Ldar), R(arg1), /* 1574 E> */ B(Ldar), R(arg1),

2
test/cctest/interpreter/bytecode_expectations/UnaryOperators.golden
View File

@ -109,7 +109,7 @@ bytecodes: [
B(Star), R(3), B(Star), R(3),
B(LdaSmi), U8(1), B(LdaSmi), U8(1),
B(Sub), R(3), B(Sub), R(3),
/* 56 E> */ B(LdrUndefined), R(1), B(LdrUndefined), R(1),
B(Ldar), R(1), B(Ldar), R(1),
/* 74 S> */ B(Nop), /* 74 S> */ B(Nop),
/* 84 S> */ B(Return), /* 84 S> */ B(Return),

225
test/cctest/interpreter/source-position-matcher.cc Normal file
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@ -0,0 +1,225 @@
// 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.
#include "test/cctest/interpreter/source-position-matcher.h"
#include "src/objects-inl.h"
#include "src/objects.h"
namespace v8 {
namespace internal {
namespace interpreter {
// Comparer for PositionTableEntry instances.
struct PositionTableEntryComparer {
bool operator()(const PositionTableEntry& lhs,
const PositionTableEntry& rhs) {
int lhs_type_score = type_score(lhs);
int rhs_type_score = type_score(rhs);
if (lhs_type_score == rhs_type_score) {
return lhs.source_position < rhs.source_position;
} else {
return lhs_type_score < rhs_type_score;
}
}
int type_score(const PositionTableEntry& entry) {
return entry.is_statement ? 1 : 0;
}
};
//
// The principles for comparing source positions in bytecode arrays
// are:
//
// 1. The number of statement positions must be the same in both.
//
// 2. Statement positions may be moved provide they do not affect the
// debuggers causal view of the v8 heap and local state. This means
// statement positions may be moved when their initial position is
// on bytecodes that manipulate the accumulator and temporary
// registers.
//
// 3. When duplicate expression positions are present, either may
// be dropped.
//
// 4. Expression positions may be applied to later bytecodes in the
// bytecode array if the current bytecode does not throw.
//
// 5. Expression positions may be dropped when they are applied to
// bytecodes that manipulate local frame state and immediately
// proceeded by another source position.
//
// 6. The relative ordering of source positions must be preserved.
//
bool SourcePositionMatcher::Match(Handle<BytecodeArray> original_bytecode,
Handle<BytecodeArray> optimized_bytecode) {
SourcePositionTableIterator original(
original_bytecode->source_position_table());
SourcePositionTableIterator optimized(
optimized_bytecode->source_position_table());
int last_original_bytecode_offset = 0;
int last_optimized_bytecode_offset = 0;
// Ordered lists of expression positions immediately before the
// latest statements in each bytecode array.
std::vector<PositionTableEntry> original_expression_entries;
std::vector<PositionTableEntry> optimized_expression_entries;
while (true) {
MoveToNextStatement(&original, &original_expression_entries);
MoveToNextStatement(&optimized, &optimized_expression_entries);
if (original.done() && optimized.done()) {
return true;
} else if (original.done()) {
return false;
} else if (optimized.done()) {
return false;
}
if (HasNewExpressionPositionsInOptimized(&original_expression_entries,
&optimized_expression_entries)) {
return false;
}
StripUnneededExpressionPositions(original_bytecode,
&original_expression_entries,
original.bytecode_offset());
StripUnneededExpressionPositions(optimized_bytecode,
&optimized_expression_entries,
optimized.bytecode_offset());
if (!CompareExpressionPositions(&original_expression_entries,
&optimized_expression_entries)) {
// Message logged in CompareExpressionPositions().
return false;
}
// Check original and optimized have matching source positions.
if (original.source_position() != optimized.source_position()) {
return false;
}
if (original.bytecode_offset() < last_original_bytecode_offset) {
return false;
}
last_original_bytecode_offset = original.bytecode_offset();
if (optimized.bytecode_offset() < last_optimized_bytecode_offset) {
return false;
}
last_optimized_bytecode_offset = optimized.bytecode_offset();
// TODO(oth): Can we compare statement positions are semantically
// equivalent? e.g. before a bytecode that has debugger observable
// effects. This is likely non-trivial.
}
return true;
}
bool SourcePositionMatcher::HasNewExpressionPositionsInOptimized(
const std::vector<PositionTableEntry>* const original_positions,
const std::vector<PositionTableEntry>* const optimized_positions) {
std::set<PositionTableEntry, PositionTableEntryComparer> original_set(
original_positions->begin(), original_positions->end());
bool retval = false;
for (auto optimized_position : *optimized_positions) {
if (original_set.find(optimized_position) == original_set.end()) {
retval = true;
}
}
return retval;
}
bool SourcePositionMatcher::CompareExpressionPositions(
const std::vector<PositionTableEntry>* const original_positions,
const std::vector<PositionTableEntry>* const optimized_positions) {
if (original_positions->size() != optimized_positions->size()) {
return false;
}
if (original_positions->size() == 0) {
return true;
}
for (size_t i = 0; i < original_positions->size(); ++i) {
PositionTableEntry original = original_positions->at(i);
PositionTableEntry optimized = original_positions->at(i);
CHECK(original.source_position > 0);
if ((original.is_statement || optimized.is_statement) ||
(original.source_position != optimized.source_position) ||
(original.source_position < 0)) {
return false;
}
}
return true;
}
void SourcePositionMatcher::StripUnneededExpressionPositions(
Handle<BytecodeArray> bytecode_array,
std::vector<PositionTableEntry>* expression_positions,
int next_statement_bytecode_offset) {
size_t j = 0;
for (size_t i = 0; i < expression_positions->size(); ++i) {
CHECK(expression_positions->at(i).source_position > 0 &&
!expression_positions->at(i).is_statement);
int bytecode_end = (i == expression_positions->size() - 1)
? next_statement_bytecode_offset
: expression_positions->at(i + 1).bytecode_offset;
if (ExpressionPositionIsNeeded(bytecode_array,
expression_positions->at(i).bytecode_offset,
bytecode_end)) {
expression_positions->at(j++) = expression_positions->at(i);
}
}
expression_positions->resize(j);
}
void SourcePositionMatcher::AdvanceBytecodeIterator(
BytecodeArrayIterator* iterator, int bytecode_offset) {
while (iterator->current_offset() != bytecode_offset) {
iterator->Advance();
}
}
bool SourcePositionMatcher::ExpressionPositionIsNeeded(
Handle<BytecodeArray> bytecode_array, int start_offset, int end_offset) {
CHECK_GT(end_offset, start_offset);
BytecodeArrayIterator iterator(bytecode_array);
AdvanceBytecodeIterator(&iterator, start_offset);
while (iterator.current_offset() != end_offset) {
if (Bytecodes::IsWithoutExternalSideEffects(iterator.current_bytecode())) {
iterator.Advance();
} else {
// Bytecode could throw so need an expression position.
return true;
}
}
return false;
}
void SourcePositionMatcher::MoveToNextStatement(
SourcePositionTableIterator* iterator,
std::vector<PositionTableEntry>* positions) {
iterator->Advance();
positions->clear();
while (!iterator->done()) {
if (iterator->is_statement()) {
break;
}
positions->push_back({iterator->bytecode_offset(),
iterator->source_position(),
iterator->is_statement()});
iterator->Advance();
}
}
} // namespace interpreter
} // namespace internal
} // namespace v8

50
test/cctest/interpreter/source-position-matcher.h Normal file
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@ -0,0 +1,50 @@
// 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.
#ifndef TEST_CCTEST_INTERPRETER_SOURCE_POSITION_COMPARER_H_
#define TEST_CCTEST_INTERPRETER_SOURCE_POSITION_COMPARER_H_
#include "src/interpreter/bytecode-array-iterator.h"
#include "src/interpreter/source-position-table.h"
#include "src/objects.h"
#include "src/v8.h"
namespace v8 {
namespace internal {
namespace interpreter {
class SourcePositionMatcher final {
public:
bool Match(Handle<BytecodeArray> original, Handle<BytecodeArray> optimized);
private:
bool HasNewExpressionPositionsInOptimized(
const std::vector<PositionTableEntry>* const original_positions,
const std::vector<PositionTableEntry>* const optimized_positions);
bool CompareExpressionPositions(
const std::vector<PositionTableEntry>* const original_positions,
const std::vector<PositionTableEntry>* const optimized_positions);
void StripUnneededExpressionPositions(
Handle<BytecodeArray> bytecode_array,
std::vector<PositionTableEntry>* positions,
int next_statement_bytecode_offset);
bool ExpressionPositionIsNeeded(Handle<BytecodeArray> bytecode_array,
int start_offset, int end_offset);
void MoveToNextStatement(
SourcePositionTableIterator* iterator,
std::vector<PositionTableEntry>* expression_positions);
void AdvanceBytecodeIterator(BytecodeArrayIterator* iterator,
int bytecode_offset);
};
} // namespace interpreter
} // namespace internal
} // namespace v8
#endif // TEST_CCTEST_INTERPRETER_SOURCE_POSITION_COMPARER_H_

237
test/cctest/interpreter/test-source-positions.cc Normal file
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@ -0,0 +1,237 @@
// Copyright 2015 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.
#include "src/v8.h"
#include "src/compiler/pipeline.h"
#include "src/handles.h"
#include "src/interpreter/bytecode-generator.h"
#include "src/interpreter/interpreter.h"
#include "src/isolate.h"
#include "src/parsing/parser.h"
#include "test/cctest/cctest.h"
#include "test/cctest/interpreter/source-position-matcher.h"
namespace v8 {
namespace internal {
namespace interpreter {
// Flags enabling optimizations that change generated bytecode array.
// Format is <command-line flag> <flag name> <bit index>
#define OPTIMIZATION_FLAGS(V) \
V(FLAG_ignition_reo, kUseReo, 0) \
V(FLAG_ignition_peephole, kUsePeephole, 1)
#define DECLARE_BIT(_, Name, BitIndex) static const int Name = 1 << BitIndex;
OPTIMIZATION_FLAGS(DECLARE_BIT)
#undef DECLARE_BIT
// Test cases source positions are checked for. Please ensure all
// combinations of flags are present here. This is done manually
// because it provides easier to comprehend failure case for humans.
#define TEST_CASES(V) \
V(UsingReo, kUseReo) \
V(UsingReoAndPeephole, kUseReo | kUsePeephole) \
V(UsingPeephole, kUsePeephole)
static const char* kTestScripts[] = {
"var x = (y = 3) + (x = y); return x + y;",
"var x = 55;\n"
"var y = x + (x = 1) + (x = 2) + (x = 3);\n"
"return y;",
"var x = 10; return x >>> 3;",
"var x = 0; return x || (1, 2, 3);",
"return a || (a, b, a, b, c = 5, 3); ",
"var a = 3; var b = 4; a = b; b = a; a = b; return a;",
"var a = 1; return [[a, 2], [a + 2]];",
"var a = 1; if (a || a < 0) { return 1; }",
"var b;"
"b = a.name;"
"b = a.name;"
"a.name = a;"
"b = a.name;"
"a.name = a;"
"return b;",
"var sum = 0;\n"
"outer: {\n"
" for (var x = 0; x < 10; ++x) {\n"
" for (var y = 0; y < 3; ++y) {\n"
" ++sum;\n"
" if (x + y == 12) { break outer; }\n"
" }\n"
" }\n"
"}\n"
"return sum;\n",
"var a = 1;"
"switch (a) {"
" case 1: return a * a + 1;"
" case 1: break;"
" case 2: return (a = 3) * a + (a = 4);"
" case 3:"
"}"
"return a;",
"for (var p of [0, 1, 2]) {}",
"var x = { 'a': 1, 'b': 2 };"
"for (x['a'] of [1,2,3]) { return x['a']; }",
"while (x == 4) {\n"
" var y = x + 1;\n"
" if (y == 2) break;\n"
" for (z['a'] of [0]) {\n"
" x += (x *= 3) + y;"
" }\n"
"}\n",
"function g(a, b) { return a.func(b + b, b); }\n"
"g(new (function Obj() { this.func = function() { return; }})(), 1)\n"};
class OptimizedBytecodeSourcePositionTester final {
public:
explicit OptimizedBytecodeSourcePositionTester(Isolate* isolate)
: isolate_(isolate) {
SaveOptimizationFlags();
saved_flag_ignition_ = FLAG_ignition;
FLAG_ignition = true;
saved_flag_always_opt_ = FLAG_always_opt;
FLAG_always_opt = false;
}
~OptimizedBytecodeSourcePositionTester() {
RestoreOptimizationFlags();
FLAG_ignition = saved_flag_ignition_;
FLAG_always_opt = saved_flag_always_opt_;
}
bool SourcePositionsMatch(int optimization_bitmap, const char* function_body,
const char* function_decl_params = "",
const char* function_args = "");
private:
Handle<BytecodeArray> MakeBytecode(int optimization_bitmap,
const char* function_body,
const char* function_decl_params,
const char* function_args);
static std::string MakeFunctionName(int optimization_bitmap);
static std::string MakeScript(const char* function_name,
const char* function_body,
const char* function_decl_params,
const char* function_args);
void SetOptimizationFlags(int optimization_bitmap);
void SaveOptimizationFlags();
void RestoreOptimizationFlags();
Isolate* isolate() const { return isolate_; }
Isolate* isolate_;
int saved_optimization_bitmap_;
bool saved_flag_ignition_;
bool saved_flag_always_opt_;
};
// static
std::string OptimizedBytecodeSourcePositionTester::MakeFunctionName(
int optimization_bitmap) {
std::ostringstream os;
os << "test_function_" << optimization_bitmap;
return os.str();
}
// static
std::string OptimizedBytecodeSourcePositionTester::MakeScript(
const char* function_name, const char* function_body,
const char* function_decl_params, const char* function_args) {
std::ostringstream os;
os << "function " << function_name << "(" << function_decl_params << ") {";
os << function_body;
os << "}";
os << function_name << "(" << function_args << ");";
return os.str();
}
Handle<BytecodeArray> OptimizedBytecodeSourcePositionTester::MakeBytecode(
int optimization_bitmap, const char* function_body,
const char* function_decl_params, const char* function_args) {
std::string function_name = MakeFunctionName(optimization_bitmap);
std::string script = MakeScript(function_name.c_str(), function_body,
function_decl_params, function_args);
SetOptimizationFlags(optimization_bitmap);
CompileRun(script.c_str());
Local<Function> api_function =
Local<Function>::Cast(CcTest::global()
->Get(CcTest::isolate()->GetCurrentContext(),
v8_str(function_name.c_str()))
.ToLocalChecked());
Handle<JSFunction> function =
Handle<JSFunction>::cast(v8::Utils::OpenHandle(*api_function));
return handle(function->shared()->bytecode_array());
}
void OptimizedBytecodeSourcePositionTester::SetOptimizationFlags(
int optimization_bitmap) {
#define SET_FLAG(V8Flag, BitName, _) \
V8Flag = (optimization_bitmap & BitName) ? true : false;
OPTIMIZATION_FLAGS(SET_FLAG)
#undef SET_FLAG
}
void OptimizedBytecodeSourcePositionTester::SaveOptimizationFlags() {
saved_optimization_bitmap_ = 0;
#define SAVE_FLAG(V8Flag, BitName, _) \
if (V8Flag) saved_optimization_bitmap_ |= BitName;
#undef SET_FLAG
}
void OptimizedBytecodeSourcePositionTester::RestoreOptimizationFlags() {
SetOptimizationFlags(saved_optimization_bitmap_);
}
bool OptimizedBytecodeSourcePositionTester::SourcePositionsMatch(
int optimization_bitmap, const char* function_body,
const char* function_decl_params, const char* function_args) {
Handle<BytecodeArray> unoptimized_bytecode =
MakeBytecode(0, function_body, function_decl_params, function_args);
Handle<BytecodeArray> optimized_bytecode = MakeBytecode(
optimization_bitmap, function_body, function_decl_params, function_args);
SourcePositionMatcher matcher;
if (!matcher.Match(unoptimized_bytecode, optimized_bytecode)) {
return false;
}
return true;
}
void TestSourcePositionsEquivalent(int optimization_bitmap) {
HandleAndZoneScope handles;
// Ensure handler table is generated.
handles.main_isolate()->interpreter()->Initialize();
OptimizedBytecodeSourcePositionTester tester(handles.main_isolate());
for (auto test_script : kTestScripts) {
CHECK(tester.SourcePositionsMatch(optimization_bitmap, test_script));
}
}
#define MAKE_TEST(Name, Bitmap) \
TEST(TestSourcePositionsEquivalent##Name) { \
TestSourcePositionsEquivalent(Bitmap); \
}
TEST_CASES(MAKE_TEST)
#undef MAKE_TEST
} // namespace interpreter
} // namespace internal
} // namespace v8