[clang] [lld] [llvm] [X86][APX] Suppress EGPR/NDD instructions for relocations (PR #136660)

[Feng Zou via cfe-commits]

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@@ -1257,6 +1259,26 @@ inline bool isX86_64ExtendedReg(MCRegister Reg) {
   return false;
 }
 
+inline const TargetRegisterClass *
+constrainRegClassToNonRex2(const TargetRegisterClass *RC) {
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fzou1 wrote:

I wrote it based on canUseApxExtendedReg function. Updated.

https://github.com/llvm/llvm-project/pull/136660
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