[clang] [llvm] [X86] Support EGPR for inline assembly. (PR #92338)

[Shengchen Kan via llvm-commits]

================
@@ -450,6 +450,8 @@ bool X86TargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
       HasFullBFloat16 = true;
     } else if (Feature == "+egpr") {
       HasEGPR = true;
+    } else if (Feature == "+inline-asm-use-gpr32") {
----------------
KanRobert wrote:

```
  std::string CodeModel = getTargetOpts().CodeModel;
  if (CodeModel == "default")
    CodeModel = "small";
  Builder.defineMacro("__code_model_" + CodeModel + "__");
```


https://github.com/llvm/llvm-project/pull/92338