Use nested switch to select arguments to reduce calls to EmitPCMP.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162089 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 8abc5b0..c77355f 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -12888,16 +12888,31 @@
// 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: