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MIPS: Replace HCheckPrototypeMaps by explicit map checks of constant values.

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Port r16055 (7567e57f)

BUG=

Review URL: https://codereview.chromium.org/21639003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16060 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
palfia@homejinni.com 2013-08-05 17:04:10 +00:00
parent 2622158aa0
commit 3b347f45a6
3 changed files with 0 additions and 53 deletions
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19
src/mips/lithium-codegen-mips.cc
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@ -5272,25 +5272,6 @@ void LCodeGen::DoClampTToUint8(LClampTToUint8* instr) {
} }
void LCodeGen::DoCheckPrototypeMaps(LCheckPrototypeMaps* instr) {
if (instr->hydrogen()->CanOmitPrototypeChecks()) return;
Register prototype_reg = ToRegister(instr->temp());
Register map_reg = ToRegister(instr->temp2());
ZoneList<Handle<JSObject> >* prototypes = instr->prototypes();
ZoneList<Handle<Map> >* maps = instr->maps();
ASSERT(prototypes->length() == maps->length());
for (int i = 0; i < prototypes->length(); i++) {
__ LoadHeapObject(prototype_reg, prototypes->at(i));
__ lw(map_reg, FieldMemOperand(prototype_reg, HeapObject::kMapOffset));
DoCheckMapCommon(map_reg, maps->at(i), instr->environment());
}
}
void LCodeGen::DoAllocate(LAllocate* instr) { void LCodeGen::DoAllocate(LAllocate* instr) {
class DeferredAllocate: public LDeferredCode { class DeferredAllocate: public LDeferredCode {
public: public:

13
src/mips/lithium-mips.cc
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@ -1926,19 +1926,6 @@ LInstruction* LChunkBuilder::DoCheckInstanceType(HCheckInstanceType* instr) {
} }
LInstruction* LChunkBuilder::DoCheckPrototypeMaps(HCheckPrototypeMaps* instr) {
LUnallocated* temp1 = NULL;
LOperand* temp2 = NULL;
if (!instr->CanOmitPrototypeChecks()) {
temp1 = TempRegister();
temp2 = TempRegister();
}
LCheckPrototypeMaps* result = new(zone()) LCheckPrototypeMaps(temp1, temp2);
if (instr->CanOmitPrototypeChecks()) return result;
return AssignEnvironment(result);
}
LInstruction* LChunkBuilder::DoCheckFunction(HCheckFunction* instr) { LInstruction* LChunkBuilder::DoCheckFunction(HCheckFunction* instr) {
LOperand* value = UseRegisterAtStart(instr->value()); LOperand* value = UseRegisterAtStart(instr->value());
return AssignEnvironment(new(zone()) LCheckFunction(value)); return AssignEnvironment(new(zone()) LCheckFunction(value));

21
src/mips/lithium-mips.h
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@ -68,7 +68,6 @@ class LCodeGen;
V(CheckMaps) \ V(CheckMaps) \
V(CheckMapValue) \ V(CheckMapValue) \
V(CheckNonSmi) \ V(CheckNonSmi) \
V(CheckPrototypeMaps) \
V(CheckSmi) \ V(CheckSmi) \
V(ClampDToUint8) \ V(ClampDToUint8) \
V(ClampIToUint8) \ V(ClampIToUint8) \
@ -2324,26 +2323,6 @@ class LCheckMaps: public LTemplateInstruction<0, 1, 0> {
}; };
class LCheckPrototypeMaps: public LTemplateInstruction<0, 0, 2> {
public:
LCheckPrototypeMaps(LOperand* temp, LOperand* temp2) {
temps_[0] = temp;
temps_[1] = temp2;
}
LOperand* temp() { return temps_[0]; }
LOperand* temp2() { return temps_[1]; }
DECLARE_CONCRETE_INSTRUCTION(CheckPrototypeMaps, "check-prototype-maps")
DECLARE_HYDROGEN_ACCESSOR(CheckPrototypeMaps)
ZoneList<Handle<JSObject> >* prototypes() const {
return hydrogen()->prototypes();
}
ZoneList<Handle<Map> >* maps() const { return hydrogen()->maps(); }
};
class LCheckSmi: public LTemplateInstruction<1, 1, 0> { class LCheckSmi: public LTemplateInstruction<1, 1, 0> {
public: public:
explicit LCheckSmi(LOperand* value) { explicit LCheckSmi(LOperand* value) {