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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. 

llvm-svn: 161305
This commit is contained in:
Craig Topper 2012-08-05 00:17:48 +00:00
parent e073177e06
commit 43ee9fae92
1 changed files with 1 additions and 2 deletions
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3
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -11867,8 +11867,7 @@ X86TargetLowering::EmitPCMP(MachineInstr *MI, MachineBasicBlock *BB,
MIB.addOperand(Op); MIB.addOperand(Op);
} }
BuildMI(*BB, MI, dl, BuildMI(*BB, MI, dl,
TII->get(Subtarget->hasAVX() ? X86::VMOVAPSrr : X86::MOVAPSrr), TII->get(TargetOpcode::COPY), MI->getOperand(0).getReg())
MI->getOperand(0).getReg())
.addReg(X86::XMM0); .addReg(X86::XMM0);
MI->eraseFromParent(); MI->eraseFromParent();