[llvm] [PGO][ICP] Prevent indirect call promotion to functions with incompatible target features (PR #192142)

[Teresa Johnson via llvm-commits]

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@@ -477,6 +477,23 @@ bool llvm::isLegalToPromote(const CallBase &CB, Function *Callee,
     }
   }
 
+  // Check target feature compatibility.
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teresajohnson wrote:

Expand to note that this can provoke incorrect inlining if the callee has the always_inline attribute.

https://github.com/llvm/llvm-project/pull/192142