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Two-address pass should use findCommutedOpIndices to determine what registers are commuted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75317 91177308-0d34-0410-b5e6-96231b3b80d8
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@@ -909,9 +909,16 @@ bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &MF) {
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}
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}
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// If it's profitable to commute the instruction, do so.
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// If it's profitable to commute the instruction, do so.
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if (TID.isCommutable() && mi->getNumOperands() >= 3) {
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unsigned SrcOp1, SrcOp2;
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unsigned regC = mi->getOperand(3-si).getReg();
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if (TID.isCommutable() && mi->getNumOperands() >= 3 &&
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if (isProfitableToCommute(regB, regC, mi, mbbi, Dist))
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TII->findCommutedOpIndices(mi, SrcOp1, SrcOp2)) {
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unsigned regC = 0;
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if (si == SrcOp1)
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regC = mi->getOperand(SrcOp2).getReg();
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else if (si == SrcOp2)
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regC = mi->getOperand(SrcOp1).getReg();
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if (regC && isProfitableToCommute(regB, regC, mi, mbbi, Dist))
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if (CommuteInstruction(mi, mbbi, regB, regC, Dist)) {
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if (CommuteInstruction(mi, mbbi, regB, regC, Dist)) {
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++NumAggrCommuted;
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++NumAggrCommuted;
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++NumCommuted;
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++NumCommuted;
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