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[js] Record load in MCreateThis alias set.

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Moonchild 2020-05-05 23:43:22 +00:00 • committed by Roy Tam
commit 4f72c20f83
2 changed files with 4 additions and 2 deletions
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1
js/src/jit/AliasAnalysisShared.cpp
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@ -134,6 +134,7 @@ GetObject(const MDefinition* ins)
case MDefinition::Op_SetArgumentsObjectArg: case MDefinition::Op_SetArgumentsObjectArg:
case MDefinition::Op_GetFrameArgument: case MDefinition::Op_GetFrameArgument:
case MDefinition::Op_SetFrameArgument: case MDefinition::Op_SetFrameArgument:
case MDefinition::Op_CreateThis:
case MDefinition::Op_CompareExchangeTypedArrayElement: case MDefinition::Op_CompareExchangeTypedArrayElement:
case MDefinition::Op_AtomicExchangeTypedArrayElement: case MDefinition::Op_AtomicExchangeTypedArrayElement:
case MDefinition::Op_AtomicTypedArrayElementBinop: case MDefinition::Op_AtomicTypedArrayElementBinop:

5
js/src/jit/MIR.h
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@ -5007,9 +5007,10 @@ class MCreateThis
TRIVIAL_NEW_WRAPPERS TRIVIAL_NEW_WRAPPERS
NAMED_OPERANDS((0, getCallee), (1, getNewTarget)) NAMED_OPERANDS((0, getCallee), (1, getNewTarget))
// Although creation of |this| modifies global state, it is safely repeatable. // Performs a property read from |newTarget| if |newTarget| is a JSFunction
// with an own |.prototype| property.
AliasSet getAliasSet() const override { AliasSet getAliasSet() const override {
return AliasSet::None(); return AliasSet::Load(AliasSet::Any);
} }
bool possiblyCalls() const override { bool possiblyCalls() const override {
return true; return true;