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emit_x64_vector: Changes to VectorSignedSaturatedDoublingMultiply

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* Return both the upper and lower parts of the multiply if required
* SSE2 does not support the pmuldq instruction, do sign correction to an unsigned result instead
* Improve port utilisation where possible (punpck instructions were a bottleneck)
This commit is contained in:
MerryMage 2018-09-15 09:04:19 +01:00
parent 08c0e017a5
commit 06b31448aa
8 changed files with 233 additions and 70 deletions
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2
src/frontend/ir/microinstruction.cpp
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@ -361,8 +361,6 @@ bool Inst::WritesToFPSRCumulativeSaturationBit() const {
case Opcode::VectorSignedSaturatedNarrowToUnsigned16:
case Opcode::VectorSignedSaturatedNarrowToUnsigned32:
case Opcode::VectorSignedSaturatedNarrowToUnsigned64:
case Opcode::VectorSignedSaturatedDoublingMultiplyReturnHigh16:
case Opcode::VectorSignedSaturatedDoublingMultiplyReturnHigh32:
case Opcode::VectorSignedSaturatedNeg8:
case Opcode::VectorSignedSaturatedNeg16:
case Opcode::VectorSignedSaturatedNeg32: