[llvm] [X86][NFC] Reorder the registers to reduce unnecessary iterations (PR #70222)

[Shengchen Kan via llvm-commits]

================
@@ -1182,11 +1182,27 @@ namespace X86II {
     }
   }
 
+  inline bool isXMMReg(unsigned RegNo) {
+    return (RegNo >= X86::XMM0 && RegNo <= X86::XMM15) ||
----------------
KanRobert wrote:

We also updated the code there. 

https://github.com/llvm/llvm-project/pull/70222