diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp
index 9fcec8ce2e3..5625d452c5c 100644
--- a/lib/Target/X86/X86RegisterInfo.cpp
+++ b/lib/Target/X86/X86RegisterInfo.cpp
@@ -14,12 +14,12 @@
 
 unsigned getIdx(unsigned dataSize) {
   switch (dataSize) {
+  default: assert(0 && "Invalid data size!");
   case 1: return 0;
   case 2: return 1;
   case 4: return 2;
     // FIXME: longs handled as ints
   case 8: return 2;
-  default: assert(0 && "Invalid data size!");
   }
 }