[clang] [CIR][X86] Add support for `cpuid`/`cpuidex` (PR #173197)

[Sirui Mu via cfe-commits]

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@@ -1835,7 +1836,16 @@ CIRGenFunction::emitX86BuiltinExpr(unsigned builtinID, const CallExpr *expr) {
   case X86::BI__builtin_ia32_cvtneps2bf16_256_mask:
   case X86::BI__builtin_ia32_cvtneps2bf16_512_mask:
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Lancern wrote:

Add error NYI here or these unrelated builtins would be handled by the cpuid handling code.

https://github.com/llvm/llvm-project/pull/173197