[Bug testsuite/126339] New: gcc.dg/vect/vect-111.c and others fail on arm with neon

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126339

            Bug ID: 126339
           Summary: gcc.dg/vect/vect-111.c  and others fail on arm with
                    neon
           Product: gcc
           Version: 17.0
            Status: UNCONFIRMED
          Keywords: testsuite-fail
          Severity: normal
          Priority: P3
         Component: testsuite
          Assignee: pinskia at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---
            Target: arm

https://gcc.gnu.org/pipermail/gcc-regression/2026-July/084135.html

So what was recommended is to change:
lappend DEFAULT_VECTCFLAGS "-ffast-math"
to
lappend DEFAULT_VECTCFLAGS "-funsafe-math-optimizations"

>From looking into gcc/config/arm/neon.md that looks like it should work.
I will do a patch this week but recorded it so I don't forget.