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Bug 1682767 part 46 - Add minor optimization back from the Ion version. r=iain

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Depends on D101038

Differential Revision: https://phabricator.services.mozilla.com/D101039
This commit is contained in:
Jan de Mooij 2021-01-07 18:42:26 +00:00
parent 99b0e38b3c
commit b845a849f8
1 changed files with 17 additions and 4 deletions
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21
js/src/jit/CacheIRCompiler.cpp
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@ -4679,6 +4679,19 @@ bool CacheIRCompiler::emitMathFunctionNumberResult(NumberOperandId inputId,
return emitMathFunctionNumberResultShared(fun, scratch, output.valueReg());
}
static void EmitStoreDenseElement(MacroAssembler& masm,
const ConstantOrRegister& value,
BaseObjectElementIndex target) {
if (value.constant()) {
Value v = value.value();
masm.storeValue(v, target);
return;
}
TypedOrValueRegister reg = value.reg();
masm.storeTypedOrValue(reg, target);
}
bool CacheIRCompiler::emitStoreDenseElement(ObjOperandId objId,
Int32OperandId indexId,
ValOperandId rhsId) {
@ -4686,7 +4699,7 @@ bool CacheIRCompiler::emitStoreDenseElement(ObjOperandId objId,
Register obj = allocator.useRegister(masm, objId);
Register index = allocator.useRegister(masm, indexId);
ValueOperand val = allocator.useValueRegister(masm, rhsId);
ConstantOrRegister val = allocator.useConstantOrRegister(masm, rhsId);
AutoScratchRegister scratch(allocator, masm);
@ -4710,7 +4723,7 @@ bool CacheIRCompiler::emitStoreDenseElement(ObjOperandId objId,
// Perform the store.
EmitPreBarrier(masm, element, MIRType::Value);
masm.storeValue(val, element);
EmitStoreDenseElement(masm, val, element);
emitPostBarrierElement(obj, val, scratch, index);
return true;
@ -4751,7 +4764,7 @@ bool CacheIRCompiler::emitStoreDenseElementHole(ObjOperandId objId,
Register obj = allocator.useRegister(masm, objId);
Register index = allocator.useRegister(masm, indexId);
ValueOperand val = allocator.useValueRegister(masm, rhsId);
ConstantOrRegister val = allocator.useConstantOrRegister(masm, rhsId);
AutoScratchRegister scratch(allocator, masm);
@ -4839,7 +4852,7 @@ bool CacheIRCompiler::emitStoreDenseElementHole(ObjOperandId objId,
EmitPreBarrier(masm, element, MIRType::Value);
masm.bind(&storeSkipPreBarrier);
masm.storeValue(val, element);
EmitStoreDenseElement(masm, val, element);
emitPostBarrierElement(obj, val, scratch, index);
return true;