[Bug middle-end/70245] [6 Regression] Miscompilation of ICU on i386 with atom tuning starting with r227382

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70245

--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Mar 16 17:52:20 2016
New Revision: 234265

URL: https://gcc.gnu.org/viewcvs?rev=234265&root=gcc&view=rev
Log:
        PR target/70245
        * rtlanal.c (replace_rtx): For REG, if from is a REG,
        return to even if only REGNO is equal, and assert
        mode is the same.

        * g++.dg/opt/pr70245.C: New test.
        * g++.dg/opt/pr70245.h: New file.
        * g++.dg/opt/pr70245-aux.cc: New file.

Added:
    trunk/gcc/testsuite/g++.dg/opt/pr70245-aux.cc
    trunk/gcc/testsuite/g++.dg/opt/pr70245.C
    trunk/gcc/testsuite/g++.dg/opt/pr70245.h
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/rtlanal.c
    trunk/gcc/testsuite/ChangeLog