================
@@ -179,10 +179,15 @@ bool X86TargetInfo::initFeatureMap(
continue;
}
+ if (llvm::X86::expandAPXFeatures(Feature, getTriple(), UpdatedFeaturesVec))
----------------
mikolaj-pirog wrote:
| We always add more features to single functions rather than reduce
An organic example I can think of where one would like to remove features is
this: when the compiler does a bad job and some specific function with a
feature regresses, but at the same time other functions don't. You can then use
negative feature in attribute target to remove this feature from a single
function.
It also doesn't really cost us anything to support negative feature, given the
machinery is already there
https://github.com/llvm/llvm-project/pull/184078
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