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Use a COPY node instead of an explicit MOVA opcode in the custom insterter for pcmpestrm/pcmpistrm. Allows the register allocator to handle it better and prevent wasted identity moves.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161305 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -11867,8 +11867,7 @@ X86TargetLowering::EmitPCMP(MachineInstr *MI, MachineBasicBlock *BB,
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MIB.addOperand(Op);
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}
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BuildMI(*BB, MI, dl,
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TII->get(Subtarget->hasAVX() ? X86::VMOVAPSrr : X86::MOVAPSrr),
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MI->getOperand(0).getReg())
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TII->get(TargetOpcode::COPY), MI->getOperand(0).getReg())
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.addReg(X86::XMM0);
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MI->eraseFromParent();
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