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Port to ARM and x64: Record the lazy deoptimization environmnent only at LLazyBailout-instructions.

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This is a port of the change http://codereview.chromium.org/6348016/
to ARM and x64 platform.

Review URL: http://codereview.chromium.org/6350011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6453 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
fschneider@chromium.org 2011-01-25 10:35:57 +00:00
parent 136db7b861
commit 2444e3f247
7 changed files with 34 additions and 85 deletions
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31
src/arm/lithium-arm.cc
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@ -653,22 +653,6 @@ LInstruction* LChunkBuilder::AssignEnvironment(LInstruction* instr) {
}
LInstruction* LChunkBuilder::SetInstructionPendingDeoptimizationEnvironment(
LInstruction* instr, int ast_id) {
ASSERT(instructions_pending_deoptimization_environment_ == NULL);
ASSERT(pending_deoptimization_ast_id_ == AstNode::kNoNumber);
instructions_pending_deoptimization_environment_ = instr;
pending_deoptimization_ast_id_ = ast_id;
return instr;
}
void LChunkBuilder::ClearInstructionPendingDeoptimizationEnvironment() {
instructions_pending_deoptimization_environment_ = NULL;
pending_deoptimization_ast_id_ = AstNode::kNoNumber;
}
LInstruction* LChunkBuilder::MarkAsCall(LInstruction* instr,
HInstruction* hinstr,
CanDeoptimize can_deoptimize) {
@ -678,8 +662,8 @@ LInstruction* LChunkBuilder::MarkAsCall(LInstruction* instr,
if (hinstr->HasSideEffects()) {
ASSERT(hinstr->next()->IsSimulate());
HSimulate* sim = HSimulate::cast(hinstr->next());
instr = SetInstructionPendingDeoptimizationEnvironment(
instr, sim->ast_id());
ASSERT(pending_deoptimization_ast_id_ == AstNode::kNoNumber);
pending_deoptimization_ast_id_ = sim->ast_id();
}
// If instruction does not have side-effects lazy deoptimization
@ -1826,12 +1810,11 @@ LInstruction* LChunkBuilder::DoSimulate(HSimulate* instr) {
// If there is an instruction pending deoptimization environment create a
// lazy bailout instruction to capture the environment.
if (pending_deoptimization_ast_id_ == instr->ast_id()) {
LInstruction* result = new LLazyBailout;
result = AssignEnvironment(result);
instructions_pending_deoptimization_environment_->
set_deoptimization_environment(result->environment());
ClearInstructionPendingDeoptimizationEnvironment();
if (pending_deoptimization_ast_id_ != AstNode::kNoNumber) {
ASSERT(pending_deoptimization_ast_id_ == instr->ast_id());
LInstruction* lazy_bailout = new LLazyBailout;
LInstruction* result = AssignEnvironment(lazy_bailout);
pending_deoptimization_ast_id_ = AstNode::kNoNumber;
return result;
}

15
src/arm/lithium-arm.h
View File

@ -320,21 +320,10 @@ class LInstruction: public ZoneObject {
void set_hydrogen_value(HValue* value) { hydrogen_value_ = value; }
HValue* hydrogen_value() const { return hydrogen_value_; }
void set_deoptimization_environment(LEnvironment* env) {
deoptimization_environment_.set(env);
}
LEnvironment* deoptimization_environment() const {
return deoptimization_environment_.get();
}
bool HasDeoptimizationEnvironment() const {
return deoptimization_environment_.is_set();
}
private:
SetOncePointer<LEnvironment> environment_;
SetOncePointer<LPointerMap> pointer_map_;
HValue* hydrogen_value_;
SetOncePointer<LEnvironment> deoptimization_environment_;
};
@ -1963,10 +1952,6 @@ class LChunkBuilder BASE_EMBEDDED {
CanDeoptimize can_deoptimize = CANNOT_DEOPTIMIZE_EAGERLY);
LInstruction* MarkAsSaveDoubles(LInstruction* instr);
LInstruction* SetInstructionPendingDeoptimizationEnvironment(
LInstruction* instr, int ast_id);
void ClearInstructionPendingDeoptimizationEnvironment();
LEnvironment* CreateEnvironment(HEnvironment* hydrogen_env);
void VisitInstruction(HInstruction* current);

16
src/arm/lithium-codegen-arm.cc
View File

@ -601,16 +601,20 @@ void LCodeGen::RegisterLazyDeoptimization(LInstruction* instr) {
// Create the environment to bailout to. If the call has side effects
// execution has to continue after the call otherwise execution can continue
// from a previous bailout point repeating the call.
LEnvironment* deoptimization_environment;
if (instr->HasDeoptimizationEnvironment()) {
deoptimization_environment = instr->deoptimization_environment();
LEnvironment* lazy_deoptimization_environment;
ASSERT(!instr->IsControl());
ASSERT(instructions_->at(current_instruction_ + 1)->IsGap());
LInstruction* next_instr = instructions_->at(current_instruction_ + 2);
if (next_instr->IsLazyBailout()) {
ASSERT(next_instr->HasEnvironment());
lazy_deoptimization_environment = next_instr->environment();
} else {
deoptimization_environment = instr->environment();
lazy_deoptimization_environment = instr->environment();
}
RegisterEnvironmentForDeoptimization(deoptimization_environment);
RegisterEnvironmentForDeoptimization(lazy_deoptimization_environment);
RecordSafepoint(instr->pointer_map(),
deoptimization_environment->deoptimization_index());
lazy_deoptimization_environment->deoptimization_index());
}

3
src/ia32/lithium-ia32.cc
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@ -1858,7 +1858,8 @@ LInstruction* LChunkBuilder::DoSimulate(HSimulate* instr) {
// If there is an instruction pending deoptimization environment create a
// lazy bailout instruction to capture the environment.
if (pending_deoptimization_ast_id_ == instr->ast_id()) {
if (pending_deoptimization_ast_id_ != AstNode::kNoNumber) {
ASSERT(pending_deoptimization_ast_id_ == instr->ast_id());
LLazyBailout* lazy_bailout = new LLazyBailout;
LInstruction* result = AssignEnvironment(lazy_bailout);
pending_deoptimization_ast_id_ = AstNode::kNoNumber;

16
src/x64/lithium-codegen-x64.cc
View File

@ -374,16 +374,20 @@ void LCodeGen::RegisterLazyDeoptimization(LInstruction* instr) {
// Create the environment to bailout to. If the call has side effects
// execution has to continue after the call otherwise execution can continue
// from a previous bailout point repeating the call.
LEnvironment* deoptimization_environment;
if (instr->HasDeoptimizationEnvironment()) {
deoptimization_environment = instr->deoptimization_environment();
LEnvironment* lazy_deoptimization_environment;
ASSERT(!instr->IsControl());
ASSERT(instructions_->at(current_instruction_ + 1)->IsGap());
LInstruction* next_instr = instructions_->at(current_instruction_ + 2);
if (next_instr->IsLazyBailout()) {
ASSERT(next_instr->HasEnvironment());
lazy_deoptimization_environment = next_instr->environment();
} else {
deoptimization_environment = instr->environment();
lazy_deoptimization_environment = instr->environment();
}
RegisterEnvironmentForDeoptimization(deoptimization_environment);
RegisterEnvironmentForDeoptimization(lazy_deoptimization_environment);
RecordSafepoint(instr->pointer_map(),
deoptimization_environment->deoptimization_index());
lazy_deoptimization_environment->deoptimization_index());
}

27
src/x64/lithium-x64.cc
View File

@ -651,22 +651,6 @@ LInstruction* LChunkBuilder::AssignEnvironment(LInstruction* instr) {
}
LInstruction* LChunkBuilder::SetInstructionPendingDeoptimizationEnvironment(
LInstruction* instr, int ast_id) {
ASSERT(instructions_pending_deoptimization_environment_ == NULL);
ASSERT(pending_deoptimization_ast_id_ == AstNode::kNoNumber);
instructions_pending_deoptimization_environment_ = instr;
pending_deoptimization_ast_id_ = ast_id;
return instr;
}
void LChunkBuilder::ClearInstructionPendingDeoptimizationEnvironment() {
instructions_pending_deoptimization_environment_ = NULL;
pending_deoptimization_ast_id_ = AstNode::kNoNumber;
}
LInstruction* LChunkBuilder::MarkAsCall(LInstruction* instr,
HInstruction* hinstr,
CanDeoptimize can_deoptimize) {
@ -676,8 +660,8 @@ LInstruction* LChunkBuilder::MarkAsCall(LInstruction* instr,
if (hinstr->HasSideEffects()) {
ASSERT(hinstr->next()->IsSimulate());
HSimulate* sim = HSimulate::cast(hinstr->next());
instr = SetInstructionPendingDeoptimizationEnvironment(
instr, sim->ast_id());
ASSERT(pending_deoptimization_ast_id_ == AstNode::kNoNumber);
pending_deoptimization_ast_id_ = sim->ast_id();
}
// If instruction does not have side-effects lazy deoptimization
@ -1569,12 +1553,11 @@ LInstruction* LChunkBuilder::DoSimulate(HSimulate* instr) {
// If there is an instruction pending deoptimization environment create a
// lazy bailout instruction to capture the environment.
if (pending_deoptimization_ast_id_ == instr->ast_id()) {
if (pending_deoptimization_ast_id_ != AstNode::kNoNumber) {
ASSERT(pending_deoptimization_ast_id_ == instr->ast_id());
LLazyBailout* lazy_bailout = new LLazyBailout;
LInstruction* result = AssignEnvironment(lazy_bailout);
instructions_pending_deoptimization_environment_->
set_deoptimization_environment(result->environment());
ClearInstructionPendingDeoptimizationEnvironment();
pending_deoptimization_ast_id_ = AstNode::kNoNumber;
return result;
}

11
src/x64/lithium-x64.h
View File

@ -317,21 +317,10 @@ class LInstruction: public ZoneObject {
void set_hydrogen_value(HValue* value) { hydrogen_value_ = value; }
HValue* hydrogen_value() const { return hydrogen_value_; }
void set_deoptimization_environment(LEnvironment* env) {
deoptimization_environment_.set(env);
}
LEnvironment* deoptimization_environment() const {
return deoptimization_environment_.get();
}
bool HasDeoptimizationEnvironment() const {
return deoptimization_environment_.is_set();
}
private:
SetOncePointer<LEnvironment> environment_;
SetOncePointer<LPointerMap> pointer_map_;
HValue* hydrogen_value_;
SetOncePointer<LEnvironment> deoptimization_environment_;
};