SaveFPRegsModeBits::encode(save_fp_regs_mode_);
}
- bool MustBeInStubCache() {
- // All stubs must be registered in the stub cache
- // otherwise IncrementalMarker would not be able to find
- // and patch it.
- return true;
- }
-
void Activate(Code* code) {
code->GetHeap()->incremental_marking()->ActivateGeneratedStub(code);
}
}
-MaybeObject* CodeStub::TryGetCode() {
- Code* code;
- if (!FindCodeInCache(&code)) {
- // Generate the new code.
- MacroAssembler masm(Isolate::Current(), NULL, 256);
- GenerateCode(&masm);
- Heap* heap = masm.isolate()->heap();
-
- // Create the code object.
- CodeDesc desc;
- masm.GetCode(&desc);
-
- // Try to copy the generated code into a heap object.
- Code::Flags flags = Code::ComputeFlags(
- static_cast<Code::Kind>(GetCodeKind()),
- GetICState());
- Object* new_object;
- { MaybeObject* maybe_new_object =
- heap->CreateCode(desc, flags, masm.CodeObject());
- if (!maybe_new_object->ToObject(&new_object)) return maybe_new_object;
- }
- code = Code::cast(new_object);
- RecordCodeGeneration(code, &masm);
- FinishCode(code);
-
- // Try to update the code cache but do not fail if unable.
- MaybeObject* maybe_new_object =
- heap->code_stubs()->AtNumberPut(GetKey(), code);
- if (maybe_new_object->ToObject(&new_object)) {
- heap->public_set_code_stubs(NumberDictionary::cast(new_object));
- } else if (MustBeInStubCache()) {
- return maybe_new_object;
- }
-
- Activate(code);
- }
-
- return code;
-}
-
-
const char* CodeStub::MajorName(CodeStub::Major major_key,
bool allow_unknown_keys) {
switch (major_key) {
// Retrieve the code for the stub. Generate the code if needed.
Handle<Code> GetCode();
- // Retrieve the code for the stub if already generated. Do not
- // generate the code if not already generated and instead return a
- // retry after GC Failure object.
- MUST_USE_RESULT MaybeObject* TryGetCode();
-
static Major MajorKeyFromKey(uint32_t key) {
return static_cast<Major>(MajorKeyBits::decode(key));
}
// result in a traversable stack.
virtual bool SometimesSetsUpAFrame() { return true; }
+ // Lookup the code in the (possibly custom) cache.
+ bool FindCodeInCache(Code** code_out);
+
protected:
static const int kMajorBits = 6;
static const int kMinorBits = kBitsPerInt - kSmiTagSize - kMajorBits;
private:
- // Lookup the code in the (possibly custom) cache.
- bool FindCodeInCache(Code** code_out);
-
// Nonvirtual wrapper around the stub-specific Generate function. Call
// this function to set up the macro assembler and generate the code.
void GenerateCode(MacroAssembler* masm);
// Finish the code object after it has been generated.
virtual void FinishCode(Code* code) { }
- // Returns true if TryGetCode should fail if it failed
- // to register newly generated stub in the stub cache.
- virtual bool MustBeInStubCache() { return false; }
-
// Activate newly generated stub. Is called after
// registering stub in the stub cache.
virtual void Activate(Code* code) { }
SaveFPRegsModeBits::encode(save_fp_regs_mode_);
}
- bool MustBeInStubCache() {
- // All stubs must be registered in the stub cache
- // otherwise IncrementalMarker would not be able to find
- // and patch it.
- return true;
- }
-
void Activate(Code* code) {
code->GetHeap()->incremental_marking()->ActivateGeneratedStub(code);
}
SaveFPRegsModeBits::encode(save_fp_regs_mode_);
}
- bool MustBeInStubCache() {
- // All stubs must be registered in the stub cache
- // otherwise IncrementalMarker would not be able to find
- // and patch it.
- return true;
- }
-
void Activate(Code* code) {
code->GetHeap()->incremental_marking()->ActivateGeneratedStub(code);
}
// Get the stack check stub code object to match against. We aren't
// prepared to generate it, but we don't expect to have to.
StackCheckStub check_stub;
- Object* check_code;
- MaybeObject* maybe_check_code = check_stub.TryGetCode();
- if (maybe_check_code->ToObject(&check_code)) {
+ Code* stack_check_code = NULL;
+ if (check_stub.FindCodeInCache(&stack_check_code)) {
Code* replacement_code =
isolate_->builtins()->builtin(Builtins::kOnStackReplacement);
Code* unoptimized_code = shared->code();
Deoptimizer::PatchStackCheckCode(unoptimized_code,
- Code::cast(check_code),
+ stack_check_code,
replacement_code);
}
}
SaveFPRegsModeBits::encode(save_fp_regs_mode_);
}
- bool MustBeInStubCache() {
- // All stubs must be registered in the stub cache
- // otherwise IncrementalMarker would not be able to find
- // and patch it.
- return true;
- }
-
void Activate(Code* code) {
code->GetHeap()->incremental_marking()->ActivateGeneratedStub(code);
}