================
@@ -139,20 +139,77 @@ enum ProcessorFeatures {
FEATURE_AVX512BITALG,
FEATURE_AVX512BF16,
FEATURE_AVX512VP2INTERSECT,
+ FEATURE_3DNOW,
+ FEATURE_ADX = 40,
+ FEATURE_CLDEMOTE = 42,
----------------
phoebewang wrote:
ABM is a AMD specific feature
https://en.wikipedia.org/wiki/X86_Bit_manipulation_instruction_set
Maybe LLVM doesn't support it. But we should be able to map it to its
corresponding [CPUID
bit](https://github.com/gcc-mirror/gcc/blob/02948ced062b730e2859f718dd46bfcaa3c16c6b/gcc/config/i386/cpuid.h#L56).
Maybe not in this patch.
I'd expect we can list the missing parts with comments like
```
FEATURE_3DNOW,
FEATURE_ADX = 40,
// FEATURE_ABM,
FEATURE_CLDEMOTE = 42,
```
https://github.com/llvm/llvm-project/pull/79086
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