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Generate better branch code for instanceof-predicates.

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Review URL: http://codereview.chromium.org/7168013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8290 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
fschneider@chromium.org 2011-06-15 09:20:24 +00:00
parent 7c13e67f52
commit e5cc31e444
2 changed files with 21 additions and 4 deletions
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15
src/hydrogen-instructions.cc
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@ -1579,6 +1579,21 @@ HType HUnaryPredicate::CalculateInferredType() {
}
HType HInstanceOf::CalculateInferredType() {
return HType::Boolean();
}
HType HDeleteProperty::CalculateInferredType() {
return HType::Boolean();
}
HType HInstanceOfKnownGlobal::CalculateInferredType() {
return HType::Boolean();
}
HType HBitwiseBinaryOperation::CalculateInferredType() {
return HType::TaggedNumber();
}

10
src/hydrogen-instructions.h
View File

@ -2789,14 +2789,12 @@ class HInstanceOf: public HTemplateInstruction<3> {
HValue* left() { return OperandAt(1); }
HValue* right() { return OperandAt(2); }
virtual bool EmitAtUses() {
return !HasSideEffects() && !HasMultipleUses();
}
virtual Representation RequiredInputRepresentation(int index) const {
return Representation::Tagged();
}
virtual HType CalculateInferredType();
virtual void PrintDataTo(StringStream* stream);
DECLARE_CONCRETE_INSTRUCTION(InstanceOf)
@ -2817,6 +2815,8 @@ class HInstanceOfKnownGlobal: public HUnaryOperation {
return Representation::Tagged();
}
virtual HType CalculateInferredType();
DECLARE_CONCRETE_INSTRUCTION(InstanceOfKnownGlobal)
private:
@ -4005,6 +4005,8 @@ class HDeleteProperty: public HBinaryOperation {
return Representation::Tagged();
}
virtual HType CalculateInferredType();
DECLARE_CONCRETE_INSTRUCTION(DeleteProperty)
HValue* object() { return left(); }