[Bug tree-optimization/97970] New: [11 regression] 'gcc.dg/gomp/pr82374.c scan-tree-dump-times vect "vectorized 1 loops" 2' for 32-bit x86

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97970

            Bug ID: 97970
           Summary: [11 regression] 'gcc.dg/gomp/pr82374.c
                    scan-tree-dump-times vect "vectorized 1 loops" 2' for
                    32-bit x86
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Keywords: openmp
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: tschwinge at gcc dot gnu.org
                CC: jakub at gcc dot gnu.org, uweigand at gcc dot gnu.org
  Target Milestone: ---
            Target: 32-bit x86

Seen for 32-bit x86 (x86_64-pc-linux-gnu with 'm32'):

    PASS: gcc.dg/gomp/pr82374.c (test for excess errors)
    [-PASS:-]{+FAIL:+} gcc.dg/gomp/pr82374.c scan-tree-dump-times vect
"vectorized 1 loops" 2

    [...]/gcc.dg/gomp/pr82374.c:18:9: note: vectorized [-1-] {+0+} loops in
function.

    [...]/gcc.dg/gomp/pr82374.c:24:1: note: vectorized [-1-] {+0+} loops in
function.

Per my testing, this appears with recent commit
r11-5310-gc4fa3728ab4f78984a549894e0e8c4d6a253e540 "Fix -ffast-math flags
handling inconsistencies".

(I don't know whether that's a latent issue, or whether the testcase has any
issues.)