[Bug target/118976] [12/13/14/15 regression] Correctness Issue: SVE vectorization results in data corruption when cpu has 128bit vectors but compiled with -mcpu=neoverse-v1 (which is only for 256bit vector cpus)

[ktkachov at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118976

ktkachov at gcc dot gnu.org changed:

           What    |Removed                     |Added
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                 CC|                            |ktkachov at gcc dot gnu.org

--- Comment #10 from ktkachov at gcc dot gnu.org ---
-mcpu=neoverse-v1 will not produce 256-bit-specific code. By default GCC will
always generate scalable VLA code unless -msve-vector-bits= is used.
The SVE_256 in the Neoverse V1 tuning model is only used for vectorisation cost
modeling heuristics and not for any correctness decisions.
So I'd expect the code from the user to work correctly