================
@@ -895,7 +895,10 @@ def ProcessorFeatures {
FeatureLSE, FeaturePAuth, FeatureFPAC,
FeatureRAS, FeatureRCPC, FeatureRDM,
FeatureBF16, FeatureDotProd,
FeatureMatMulInt8, FeatureSSBS];
- list<SubtargetFeature> AppleM4 = [HasV9_2aOps, FeatureSHA2, FeatureFPARMv8,
+ // Technically apple-m4 is ARMv9.2a, but a quirk of LLVM defines v9.0 as
+ // requiring SVE, which is optional according to the Arm ARM and not
+ // supported by the core. ARMv8.7a is the next closest choice.
----------------
tmatheson-arm wrote:
Please update the comment to explain the "quirk". I think what you mean is that
clang will still add all of the architecture default features when you are
selecting a particular CPU, even if the backend wouldn't add them.
https://github.com/llvm/llvm-project/pull/106312
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