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Bug 920452 - Odinmonkey: Constant global variables have no alias dependencies. r=bbouvier

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This commit is contained in:
Douglas Crosher 2013-09-26 11:01:24 +10:00
parent 22c73af975
commit e8ff8d0db5
1 changed files with 3 additions and 2 deletions
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5
js/src/jit/MIR.h
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@ -8629,7 +8629,7 @@ class MAsmJSStoreHeap : public MBinaryInstruction, public MAsmJSHeapAccess
class MAsmJSLoadGlobalVar : public MNullaryInstruction
{
MAsmJSLoadGlobalVar(MIRType type, unsigned globalDataOffset, bool isConstant)
: globalDataOffset_(globalDataOffset)
: globalDataOffset_(globalDataOffset), isConstant_(isConstant)
{
JS_ASSERT(type == MIRType_Int32 || type == MIRType_Double);
setResultType(type);
@ -8637,6 +8637,7 @@ class MAsmJSLoadGlobalVar : public MNullaryInstruction
}
unsigned globalDataOffset_;
bool isConstant_;
public:
INSTRUCTION_HEADER(AsmJSLoadGlobalVar);
@ -8650,7 +8651,7 @@ class MAsmJSLoadGlobalVar : public MNullaryInstruction
bool congruentTo(MDefinition *ins) const;
AliasSet getAliasSet() const {
return AliasSet::Load(AliasSet::AsmJSGlobalVar);
return isConstant_ ? AliasSet::None() : AliasSet::Load(AliasSet::AsmJSGlobalVar);
}
bool mightAlias(MDefinition *def);