[Bug tree-optimization/119351] [15 Regression] Wrong code in GROMACS for AArch64 generic SVE VLS target since r15-6807-g68326d5d1a593d

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119351

--- Comment #18 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #17)
> I wonder if we can use
> 
>  BIT_FIELD_REF <mask ? IV : inital-value, .., 0>
> 
> as the "reduction" step.

Yeah that's the same comment Richard S suggested when we were talking to avoid
the expensive mask reduction :)

It's the fix I'm currently working on.