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Use nested switch to select arguments to reduce calls to EmitPCMP. 

llvm-svn: 162089
This commit is contained in:
Craig Topper 2012-08-17 07:15:56 +00:00
parent 602e1abe0d
commit 31625574db
1 changed files with 20 additions and 5 deletions
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25
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -12888,16 +12888,31 @@ X86TargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
// String/text processing lowering.
case X86::PCMPISTRM128REG:
case X86::VPCMPISTRM128REG:
return EmitPCMP(MI, BB, 3, false /* in-mem */);
case X86::PCMPISTRM128MEM:
case X86::VPCMPISTRM128MEM:
return EmitPCMP(MI, BB, 3, true /* in-mem */);
case X86::PCMPESTRM128REG:
case X86::VPCMPESTRM128REG:
return EmitPCMP(MI, BB, 5, false /* in mem */);
case X86::PCMPESTRM128MEM:
case X86::VPCMPESTRM128MEM:
return EmitPCMP(MI, BB, 5, true /* in mem */);
case X86::VPCMPESTRM128MEM: {
unsigned NumArgs;
bool MemArg;
switch (MI->getOpcode()) {
default: llvm_unreachable("illegal opcode!");
case X86::PCMPISTRM128REG:
case X86::VPCMPISTRM128REG:
NumArgs = 3; MemArg = false; break;
case X86::PCMPISTRM128MEM:
case X86::VPCMPISTRM128MEM:
NumArgs = 3; MemArg = true; break;
case X86::PCMPESTRM128REG:
case X86::VPCMPESTRM128REG:
NumArgs = 5; MemArg = false; break;
case X86::PCMPESTRM128MEM:
case X86::VPCMPESTRM128MEM:
NumArgs = 5; MemArg = true; break;
}
return EmitPCMP(MI, BB, NumArgs, MemArg);
}
// Thread synchronization.
case X86::MONITOR: