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

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Merged
labrinea merged 2 commits into from
Dec 15, 2025
Merged

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

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69d5caa
Restrict FMV to not work with other mangling/cloning extensions
AlfieRichardsArm Sep 30, 2025
f109eca
Merge branch 'main' into FMV_RESTRICTION
labrinea Dec 15, 2025
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5 changes: 4 additions & 1 deletion main/acle.md
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Expand Up @@ -4,7 +4,7 @@ version: 2025Q3
date-of-issue: 14 November 2025
# LaTeX specific variables
copyright-text: "Copyright: see section \\texorpdfstring{\\nameref{copyright}}{Copyright}."
draftversion: false
draftversion: true
# Jekyll specific variables
header_counter: true
toc: true
Expand Down Expand Up @@ -471,6 +471,7 @@ Armv8.4-A [[ARMARMv84]](#ARMARMv84). Support is added for the Dot Product intrin

* Added support for modal 8-bit floating point matrix multiply-accumulate widening intrinsics.
* Added support for 16-bit floating point matrix multiply-accumulate widening intrinsics.
* Added restrictions of Function Multi Versioning's use with other extensions.

### References

Expand Down Expand Up @@ -2817,6 +2818,8 @@ 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