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

[Shengchen Kan via cfe-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:

> > Will the feature be emitted in IR?
> 
> yes, I was referring `prefer-no-gather`

Then it's not expected. `prefer-no-gather` is a real tuning feature.

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