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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164926 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp b/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
index 348236316c895c561d1e4551b319f69b39ee2214..02b586bb7cf0a6d26f349c1c91487d41dd2ef777 100644 (file)
--- a/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
+++ b/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
@@ -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: