[Bug tree-optimization/77856] [7 Regression] wrong code at -O2 on x86_64-linux-gnu in 32-bit mode

[vmakarov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77856

--- Comment #4 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Wed Nov 30 17:35:40 2016
New Revision: 243038

URL: https://gcc.gnu.org/viewcvs?rev=243038&root=gcc&view=rev
Log:
2016-11-30  Vladimir Makarov  <vmakarov@redhat.com>

        PR tree-optimization/77856
        * lra-constraints.c (inherit_in_ebb): Check original regno for
        invalid invariant regs too.  Set only clobbered hard regs for the
        invalid invariant regs.

2016-11-30  Vladimir Makarov  <vmakarov@redhat.com>

        PR tree-optimization/77856
        * gcc.target/i386.c (pr77856.c): New.


Added:
    trunk/gcc/testsuite/gcc.target/i386/pr77856.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/lra-constraints.c
    trunk/gcc/testsuite/ChangeLog