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Restrict FMV to not be combined with other mangling/cloning extensions #413

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Restrict FMV to not be combined with other mangling/cloning extensions #413

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Expand Up @@ -465,6 +465,7 @@ Armv8.4-A [[ARMARMv84]](#ARMARMv84). Support is added for the Dot Product intrin

* Added feature test macro for FEAT_SSVE_FEXPA.
* Added feature test macro for FEAT_CSSC.
* Added restrictions of Function Multi Versioning's use with other extensions.

### References

Expand Down Expand Up @@ -2788,6 +2789,8 @@ The following attributes trigger the multi version code generation:
* as a function annotated with `target_version("default")`,
* or, as a function annotated with `target_clones(...)` where one
of the versions is `default`.
* Using any C/C++ extensions or attributes that affect function name mangling,
or that clone functions alongside Function Multi Versioning is not supported.

The attribute `__attribute__((target_version("<target version string>")))` expresses the
following:
Expand Down