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Use constants for all return values in switch. Allows clang to optimize it into a lookup table. 

llvm-svn: 164926
This commit is contained in:
Craig Topper 2012-10-01 07:33:27 +00:00
parent 54e8f0b4cf
commit 4ca8ca916e
1 changed files with 8 additions and 3 deletions
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11
llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
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@ -243,9 +243,14 @@ unsigned X86_MC::getX86RegNum(unsigned RegNo) {
case X86::R15: case X86::R15D: case X86::R15W: case X86::R15B:
return N86::EDI;
case X86::ST0: case X86::ST1: case X86::ST2: case X86::ST3:
case X86::ST4: case X86::ST5: case X86::ST6: case X86::ST7:
return RegNo-X86::ST0;
case X86::ST0: return 0;
case X86::ST1: return 1;
case X86::ST2: return 2;
case X86::ST3: return 3;
case X86::ST4: return 4;
case X86::ST5: return 5;
case X86::ST6: return 6;
case X86::ST7: return 7;
case X86::XMM0: case X86::XMM8:
case X86::YMM0: case X86::YMM8: case X86::MM0: