[compiler-rt] [clang] [llvm] [X86] Support more ISAs to enable __builtin_cpu_supports (PR #79086)

[Freddy Ye via cfe-commits]

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@@ -139,20 +139,77 @@ enum ProcessorFeatures {
   FEATURE_AVX512BITALG,
   FEATURE_AVX512BF16,
   FEATURE_AVX512VP2INTERSECT,
+  FEATURE_3DNOW,
+  FEATURE_ADX = 40,
+  FEATURE_CLDEMOTE = 42,
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FreddyLeaf wrote:

The missing features are ones I can't recognize in https://github.com/gcc-mirror/gcc/blob/02948ced062b730e2859f718dd46bfcaa3c16c6b/gcc/common/config/i386/i386-cpuinfo.h#L154, e.g. FEATURE_ABM, I can't find relate one in LLVM.

https://github.com/llvm/llvm-project/pull/79086