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From: "thiago.bauermann at linaro dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/111125] New: tree-ssa.exp and vect.exp failures
 after commit 99b5921bfc8f
Date: Thu, 24 Aug 2023 02:05:53 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111125

            Bug ID: 111125
           Summary: tree-ssa.exp and vect.exp failures after commit
                    99b5921bfc8f
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: thiago.bauermann at linaro dot org
                CC: rguenth at gcc dot gnu.org
  Target Milestone: ---
            Target: aarch64

Created attachment 55784
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D55784&action=3Dedit
gcc.log from commit 829c0c06fe7b

Our CI detected that commit 99b5921bfc8f "Handle TYPE_OVERFLOW_UNDEFINED
vectorized BB reductions" introduced these testsuite failures on aarch64-li=
nux:

                =3D=3D=3D gcc tests =3D=3D=3D

Running gcc:gcc.dg/tree-ssa/tree-ssa.exp ...
FAIL: gcc.dg/tree-ssa/slsr-11.c scan-tree-dump-times optimized " \\* " 1

Running gcc:gcc.dg/vect/vect.exp ...
FAIL: gcc.dg/vect/bb-slp-29.c -flto -ffat-lto-objects  scan-tree-dump-times
slp1 "optimized: basic block" 1
FAIL: gcc.dg/vect/bb-slp-29.c scan-tree-dump-times slp1 "optimized: basic
block" 1
FAIL: gcc.dg/vect/pr53773.c -flto -ffat-lto-objects  scan-tree-dump-times
optimized "\\* 10" 2
FAIL: gcc.dg/vect/pr53773.c scan-tree-dump-times optimized "\\* 10" 2

I confirmed that they are still present in trunk as of commit 829c0c06fe7b
"Fortran: improve diagnostic message for COMMON with automatic object
[PR32986]" from today.

The tests above fail with these messages found in gcc.log:

- gcc.dg/tree-ssa/slsr-11.c: pattern found 3 times
- gcc.dg/vect/bb-slp-29.c: pattern found 2 times
- gcc.dg/vect/pr53773.c: pattern found 0 times

Tested on Ubuntu 22.04 with:

$ ~/src/gcc/configure \
    --disable-bootstrap \
    --disable-multilib \
    && make -j 60 \
    && make -C gcc check-gcc RUNTESTFLAGS=3D"gcc.dg/tree-ssa/tree-ssa.exp
gcc.dg/vect/vect.exp"

I'll attach gcc.log from trunk.=