[Bug rtl-optimization/67103] New: [6 Regression]: gcc.target/i386/cmov2.c and gcc.target/i386/cmov3.c FAIL on x86

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67103

            Bug ID: 67103
           Summary: [6 Regression]: gcc.target/i386/cmov2.c and
                    gcc.target/i386/cmov3.c FAIL on x86
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ubizjak at gmail dot com
  Target Milestone: ---

Revision r226491 :

[RTL-ifcvt] Improve conditional select ops on immediates

        * ifcvt.c (noce_try_store_flag_constants): Make logic of the case
        when diff == STORE_FLAG_VALUE or diff == -STORE_FLAG_VALUE more
        explicit.  Prefer to add the flag whenever possible.
        (noce_process_if_block): Try noce_try_store_flag_constants before
        noce_try_cmove.

        * gcc.target/aarch64/csel_bfx_1.c: New test.
        * gcc.target/aarch64/csel_imms_inc_1.c: Likewise.

introduced following testsuite failures on x86:

FAIL: gcc.target/i386/cmov2.c scan-assembler sbb
FAIL: gcc.target/i386/cmov3.c scan-assembler cmov[^3]

The report and a discussion is at [1].

[1] https://gcc.gnu.org/ml/gcc-patches/2015-08/msg00056.html