================
@@ -483,14 +483,16 @@ void just_fine(void) {}
 
 __arm_locally_streaming
 __attribute__((target_version("sme2")))
-void just_fine_locally_streaming(void) {}
+void incompatible_locally_streaming(void) {}
+// expected-error@-1 {{attribute 'target_version' multiversioning cannot be 
combined with attribute '__arm_locally_streaming'}}
+// expected-cpp-error@-2 {{attribute 'target_version' multiversioning cannot 
be combined with attribute '__arm_locally_streaming'}}
----------------
jroelofs wrote:

I think this is a regression, but it's fine to fix it in another patch. The 
locally streaming function has the same ABI as the non-streaming one, so FMV 
_should_ be possible between them (unlike w/ a streaming one). LIkewise, it 
should be possible to FMV between streaming compatible functions and normal 
ones.

https://github.com/llvm/llvm-project/pull/85454
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