[Bug middle-end/103479] New: [12 regression] gcc.dg/bic-bitmask-18.c fails after r12-5489

[Bug middle-end/103479] New: [12 regression] gcc.dg/bic-bitmask-18.c fails after r12-5489

[seurer at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103479

            Bug ID: 103479
           Summary: [12 regression] gcc.dg/bic-bitmask-18.c fails after
                    r12-5489
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: seurer at gcc dot gnu.org
  Target Milestone: ---

g:0888d6bbe97e10de0e624f4ab46acc276e5ee1d7, r12-5489
make  -k check-gcc RUNTESTFLAGS="dg.exp=gcc.dg/bic-bitmask-18.c"
FAIL: gcc.dg/bic-bitmask-18.c scan-tree-dump-times dce7 "= 0" 1
# of expected passes            2
# of unexpected failures        1


spawn -ignore SIGHUP /home3/seurer/gcc/git/build/gcc-test/gcc/xgcc
-B/home3/seurer/gcc/git/build/gcc-test/gcc/ exceptions_enabled2369981.cc
-fdiagnostics-plain-output -S -o exceptions_enabled2369981.s
PASS: gcc.dg/bic-bitmask-18.c (test for excess errors)
Setting LD_LIBRARY_PATH to ...
Execution timeout is: 300
spawn [open ...]
PASS: gcc.dg/bic-bitmask-18.c execution test
gcc.dg/bic-bitmask-18.c: pattern found 2 times
FAIL: gcc.dg/bic-bitmask-18.c scan-tree-dump-times dce7 "= 0" 1


commit 0888d6bbe97e10de0e624f4ab46acc276e5ee1d7 (HEAD, refs/bisect/bad)
Author: Tamar Christina <tamar.christina@arm.com>
Date:   Wed Nov 24 06:38:18 2021 +0000

    middle-end: Convert bitclear <imm> + cmp<cc> #0 into cm<cc2> <imm2>

[Bug middle-end/103479] [12 regression] gcc.dg/bic-bitmask-18.c fails after r12-5489

[tnfchris at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103479

--- Comment #1 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Could you post the dce7 dump file if you have it?

[Bug testsuite/103479] [12 regression] gcc.dg/bic-bitmask-18.c fails after r12-5489

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103479

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|middle-end                  |testsuite
   Target Milestone|---                         |12.0

[Bug testsuite/103479] [12 regression] gcc.dg/bic-bitmask-18.c fails after r12-5489

[seurer at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103479

--- Comment #2 from seurer at gcc dot gnu.org ---
Created attachment 51907
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51907&action=edit
dec7 dump file

Dump file attached

[Bug testsuite/103479] [12 regression] gcc.dg/bic-bitmask-18.c fails after r12-5489

[tnfchris at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103479

--- Comment #3 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
(In reply to seurer from comment #2)
> Created attachment 51907 [details]
> dec7 dump file
> 
> Dump file attached

Got it, thanks, I'll fix it today, the regexp is too liberal in this case.

[Bug testsuite/103479] [12 regression] gcc.dg/bic-bitmask-18.c fails after r12-5489

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103479

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tamar Christina <tnfchris@gcc.gnu.org>:

https://gcc.gnu.org/g:7d6c20c06ce4e5d595245af503b045c2032c02f7

commit r12-5713-g7d6c20c06ce4e5d595245af503b045c2032c02f7
Author: Tamar Christina <tamar.christina@arm.com>
Date:   Thu Dec 2 13:30:08 2021 +0000

    testsuite: make bic-bitmask-18.c test more precise [PR103479]

    This updates the testcase bic-bitmask-18.c to seach for " = 0;" as an
expression
    so it doesn't match any other partial expressions.

    gcc/testsuite/ChangeLog:

            PR testsuite/103479
            * gcc.dg/bic-bitmask-18.c: Update regexpr to expect = 0;.

[Bug testsuite/103479] [12 regression] gcc.dg/bic-bitmask-18.c fails after r12-5489

[tnfchris at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103479

Tamar Christina <tnfchris at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #5 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Should be fixed now.