[llvm] [X86] Support EGPR (R16-R31) for APX (PR #67702)

[Shengchen Kan via llvm-commits]

================
@@ -150,6 +150,11 @@ class X86InstrInfo final : public X86GenInstrInfo {
 public:
   explicit X86InstrInfo(X86Subtarget &STI);
 
+  const TargetRegisterClass *
----------------
KanRobert wrote:

Make sense. Done.

https://github.com/llvm/llvm-project/pull/67702