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[Bug rtl-optimization/34012] [4.3 Regression] Pessimization caused by fwprop
- From: "jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 9 Nov 2007 13:03:17 -0000
- Subject: [Bug rtl-optimization/34012] [4.3 Regression] Pessimization caused by fwprop
- References: <bug-34012-87@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #10 from jakub at gcc dot gnu dot org 2007-11-09 13:03 -------
Subject: Bug 34012
Author: jakub
Date: Fri Nov 9 13:02:25 2007
New Revision: 130043
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130043
Log:
PR rtl-optimization/34012
* fwprop.c (try_fwprop_subst): Do not replace if the new
SET_SRC has a higher cost than the old one.
* gcc.target/i386/pr34012.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr34012.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fwprop.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34012