================
@@ -1845,6 +1845,7 @@ bool sys::getHostCPUFeatures(StringMap<bool> &Features) {
   Features["prefetchi"]  = HasLeaf7Subleaf1 && ((EDX >> 14) & 1);
   Features["usermsr"]  = HasLeaf7Subleaf1 && ((EDX >> 15) & 1);
   Features["avx10.1-256"] = HasLeaf7Subleaf1 && ((EDX >> 19) & 1);
+  Features["apxf"] = HasLeaf7Subleaf1 && ((EDX >> 21) & 1);
----------------
KanRobert wrote:

> if llc read "apxf" in attribute, I think a warning will be given like:
> 
> ```
> '+apxf' is not a recognized feature for this target (ignoring feature)
> ```

Did you check the behavior w/ this patch?


https://github.com/llvm/llvm-project/pull/80636
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