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[Bug middle-end/18424] [3.4/4.0 Regression] ~6x+ performance regression, constant trees not being computed.
- From: "cvs-commit at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 11 Dec 2004 01:49:20 -0000
- Subject: [Bug middle-end/18424] [3.4/4.0 Regression] ~6x+ performance regression, constant trees not being computed.
- References: <20041111023501.18424.schlie@comcast.net>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-12-11 01:49 -------
Subject: Bug 18424
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: sayle@gcc.gnu.org 2004-12-11 01:49:06
Modified files:
gcc : ChangeLog dojump.c
Log message:
PR target/18002
PR middle-end/18424
* dojump.c (do_jump): When attempting to reverse the effects of
fold_single_bit_test, we need to STRIP_NOPS and narrowing type
conversions, and handle BIT_XOR_EXPR that's used to invert the
sense of the single bit test.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.6778&r2=2.6779
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/dojump.c.diff?cvsroot=gcc&r1=1.32&r2=1.33
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18424