[Bug target/79354] [7 Regression] -mcpu=power8 -O2 generates power9 instruction on powerpc64le-linux

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79354

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb  3 17:34:56 2017
New Revision: 245157

URL: https://gcc.gnu.org/viewcvs?rev=245157&root=gcc&view=rev
Log:
        PR target/79354
        * config/rs6000/rs6000.md (movsi_from_sf): Use wb constraint instead of
        wu for stxssp alternative.

        * gcc.target/powerpc/pr79354.c: New test.
        * gcc.c-torture/execute/pr79354.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr79354.c
    trunk/gcc/testsuite/gcc.target/powerpc/pr79354.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/rs6000/rs6000.md
    trunk/gcc/testsuite/ChangeLog