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

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164926 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper
2012-10-01 07:33:27 +00:00
parent 77c1270033
commit 363d1c3c55
1 changed files with 8 additions and 3 deletions
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11
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: case X86::R15: case X86::R15D: case X86::R15W: case X86::R15B:
return N86::EDI; return N86::EDI;
case X86::ST0: case X86::ST1: case X86::ST2: case X86::ST3: case X86::ST0: return 0;
case X86::ST4: case X86::ST5: case X86::ST6: case X86::ST7: case X86::ST1: return 1;
return RegNo-X86::ST0; 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::XMM0: case X86::XMM8:
case X86::YMM0: case X86::YMM8: case X86::MM0: case X86::YMM0: case X86::YMM8: case X86::MM0: