This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug rtl-optimization/42691] [4.4/4.5 regression] problematic REG_EQUAL note added to SUBREG
- From: "jingyu at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 15 Jan 2010 19:09:05 -0000
- Subject: [Bug rtl-optimization/42691] [4.4/4.5 regression] problematic REG_EQUAL note added to SUBREG
- References: <bug-42691-17567@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #13 from jingyu at gcc dot gnu dot org 2010-01-15 19:09 -------
Subject: Bug 42691
Author: jingyu
Date: Fri Jan 15 19:08:53 2010
New Revision: 155945
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155945
Log:
Backport from mainline(4.5) to fix a regression bug.
2010-01-15 Jing Yu <jingyu@google.com>
PR rtl-optimization/42691
* combine.c (try_combine): Set changed_i3_dest to 1 when I2 and I3 set
a pseudo to a constant and are merged, and adjust comments.
2010-01-15 Jing Yu <jingyu@google.com>
PR rtl-optimization/42691
* gcc.c-torture/execute/pr42691.c: New.
Added:
branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/execute/pr42691.c
Modified:
branches/gcc-4_4-branch/gcc/ChangeLog
branches/gcc-4_4-branch/gcc/combine.c
branches/gcc-4_4-branch/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42691