[Bug target/80706] [7/8 Regression] peephole2 uses uninitialized stack variables on i686

[uros at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80706

--- Comment #14 from uros at gcc dot gnu.org ---
Author: uros
Date: Thu May 11 18:12:25 2017
New Revision: 247921

URL: https://gcc.gnu.org/viewcvs?rev=247921&root=gcc&view=rev
Log:
        PR target/80706
        * config/i386/sync.md (UNSPEC_LDX_ATOMIC): New unspec.
        (UNSPEC_STX_ATOMIC): Ditto.
        (loaddi_via_sse): New insn.
        (storedi_via_sse): Ditto.
        (atomic_loaddi_fpu): Emit loaddi_via_sse and storedi_via_sse.
        Update corresponding peephole2 patterns.
        (atomic_storedi_fpu): Ditto.

testsuite/ChangeLog:

        PR target/80706
        * gcc.target/i386/pr80706.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/i386/pr80706.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/sync.md
    trunk/gcc/testsuite/ChangeLog