[Bug rtl-optimization/89634] gmp-ecm miscompilation on s390x with -march=zEC12 -m64 -O2

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89634

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Mar  9 08:25:48 2019
New Revision: 269522

URL: https://gcc.gnu.org/viewcvs?rev=269522&root=gcc&view=rev
Log:
        PR rtl-optimization/89634
        * cfgcleanup.c (thread_jump): Punt if registers mentioned in cond1
        are modified in BB_END (e->src) instruction.

        * gcc.c-torture/execute/pr89634.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr89634.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cfgcleanup.c
    trunk/gcc/testsuite/ChangeLog