[Bug rtl-optimization/92176] LRA problem with reloads for subreg operands

[vmakarov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92176

--- Comment #8 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Fri Dec  6 19:30:37 2019
New Revision: 279061

URL: https://gcc.gnu.org/viewcvs?rev=279061&root=gcc&view=rev
Log:
2019-12-06  Andreas Krebbel  <kreb...@linux.ibm.com>
            Vladimir Makarov  <vmaka...@redhat.com>

        PR rtl-optimization/92176
        * lra.c (simplify_subreg_regno): Don't permit unconditional
        changing mode for LRA too.

2019-12-06  Andreas Krebbel  <kreb...@linux.ibm.com>
            Vladimir Makarov  <vmaka...@redhat.com>

        PR rtl-optimization/92176
        * gcc.target/s390/pr92176.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/s390/pr92176.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/rtlanal.c
    trunk/gcc/testsuite/ChangeLog