bool
GlobOpt::Simd128DoTypeSpecLoadStore(IR::Instr *instr, const Value *src1Val, const Value *src2Val, const Value *dstVal, const ThreadContext::SimdFuncSignature *simdFuncSignature)
{
IR::Opnd *baseOpnd = nullptr, *indexOpnd = nullptr, *valueOpnd = nullptr;
IR::Opnd *src, *dst;
bool doTypeSpec = true;
// value = Ld [arr + index]
// [arr + index] = St value
src = instr->GetSrc1();
dst = instr->GetDst();
Assert(dst && src && !instr->GetSrc2());
if (Js::IsSimd128Load(instr->m_opcode))
{
Assert(src->IsIndirOpnd());
baseOpnd = instr->GetSrc1()->AsIndirOpnd()->GetBaseOpnd();
indexOpnd = instr->GetSrc1()->AsIndirOpnd()->GetIndexOpnd();
valueOpnd = instr->GetDst();
}
else if (Js::IsSimd128Store(instr->m_opcode))
{
Assert(dst->IsIndirOpnd());
baseOpnd = instr->GetDst()->AsIndirOpnd()->GetBaseOpnd();
indexOpnd = instr->GetDst()->AsIndirOpnd()->GetIndexOpnd();
valueOpnd = instr->GetSrc1();
// St(arr, index, value). Make sure value can be Simd128 type-spec'd
doTypeSpec = doTypeSpec && Simd128CanTypeSpecOpnd(FindValue(valueOpnd->AsRegOpnd()->m_sym)->GetValueInfo()->Type(), simdFuncSignature->args[2]);
}
else
{
Assert(UNREACHED);
}
// array and index operands should have been type-specialized in OptArraySrc: ValueTypes should be definite at this point. If not, don't type-spec.
// We can be in a loop prepass, where opnd ValueInfo is not set yet. Get the ValueInfo from the Value Table instead.
ValueType baseOpndType = FindValue(baseOpnd->AsRegOpnd()->m_sym)->GetValueInfo()->Type();
if (IsLoopPrePass())
{
doTypeSpec = doTypeSpec && (baseOpndType.IsObject() && baseOpndType.IsTypedArray());
// indexOpnd might be missing if loading from [0]
if (indexOpnd != nullptr)
{
ValueType indexOpndType = FindValue(indexOpnd->AsRegOpnd()->m_sym)->GetValueInfo()->Type();
doTypeSpec = doTypeSpec && indexOpndType.IsLikelyInt();
}
}
else
{
doTypeSpec = doTypeSpec && (baseOpndType.IsObject() && baseOpndType.IsTypedArray());
if (indexOpnd != nullptr)
{
ValueType indexOpndType = FindValue(indexOpnd->AsRegOpnd()->m_sym)->GetValueInfo()->Type();
doTypeSpec = doTypeSpec && indexOpndType.IsInt();
}
}
return doTypeSpec;
}
