[Bug rtl-optimization/68328] [4.9/5/6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68328

--- Comment #11 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Tue Nov 24 09:31:57 2015
New Revision: 230795

URL: https://gcc.gnu.org/viewcvs?rev=230795&root=gcc&view=rev
Log:
[RTL-ree] PR rtl-optimization/68194: Restrict copy instruction in presence of
conditional moves

        PR rtl-optimization/68194
        PR rtl-optimization/68328
        PR rtl-optimization/68185
        * ree.c (combine_reaching_defs): Reject copy_needed case if
        copies_list is not empty.

        * gcc.c-torture/execute/pr68185.c: New test.
        * gcc.c-torture/execute/pr68328.c: Likewise.


Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr68185.c
    trunk/gcc/testsuite/gcc.c-torture/execute/pr68328.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ree.c
    trunk/gcc/testsuite/ChangeLog