[Bug rtl-optimization/89354] [7 Regression] Combine pass yields wrong code with -O2 and -msse2 for 32bit target

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89354

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Aug 30 11:59:10 2019
New Revision: 275111

URL: https://gcc.gnu.org/viewcvs?rev=275111&root=gcc&view=rev
Log:
        Backported from mainline
        2019-02-14  Jakub Jelinek  <ja...@redhat.com>

        PR rtl-optimization/89354
        * combine.c (make_extraction): Punt if extraction_mode is narrower
        than len bits.

        * gcc.dg/pr89354.c: New test.

Added:
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/pr89354.c
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/combine.c
    branches/gcc-7-branch/gcc/testsuite/ChangeLog