[Bug target/58779] [4.7/4.8/4.9 Regression] wrong code at -O1 on x86_64-linux-gnu

[uros at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58779

--- Comment #7 from uros at gcc dot gnu.org ---
Author: uros
Date: Tue Oct 22 18:35:53 2013
New Revision: 203935

URL: http://gcc.gnu.org/viewcvs?rev=203935&root=gcc&view=rev
Log:
    PR target/58779
    * config/i386/i386.c (put_condition_code) <case GTU, case LEU>:
    Remove CCCmode handling.
    <case LTU>: Return 'c' suffix for CCCmode.
    <case GEU>: Return 'nc' suffix for CCCmode.
    (ix86_cc_mode) <case GTU, case LEU>: Do not generate overflow checks.
    * config/i386/i386.md (*sub<mode>3_cconly_overflow): Remove.
    (*sub<mode>3_cc_overflow): Ditto.
    (*subsi3_zext_cc_overflow): Ditto.

testsuite/ChangeLog:

    PR target/58779
    * gcc.target/i386/pr30315.c: Remove MINUSCC, DECCC, MINUSCCONLY
    and MINUSCCZEXT defines. Update scan-assembler dg directive.
    * gcc.dg/torture/pr58779.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr58779.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/config/i386/i386.md
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/i386/pr30315.c