------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-05-27
02:46 -------
Subject: Bug 9814
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: [EMAIL PROTECTED] 2005-05-27 02:46:01
Modified files:
gcc : ChangeLog ifcvt.c
gcc/testsuite : ChangeLog
Added files:
gcc/testsuite/gcc.dg: pr9814-1.c
Log message:
PR tree-optimization/9814
* ifcvt.c (noce_emit_move_insn): If we fail to recognize the move
instruction, add the necessary clobbers by re-expanding the RTL
for arithmetic operations via optab.c's expand_unop/expand_binop.
(noce_try_bitop): New function to optimize bit manipulation idioms
of the form "if (x & C) x = x op C" and "if (!(x & C) x = x op C".
(noce_process_if_block): Call noce_try_bitop.
* gcc.dg/pr9814-1.c: New test case.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.8916&r2=2.8917
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ifcvt.c.diff?cvsroot=gcc&r1=1.187&r2=1.188
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.5540&r2=1.5541
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/pr9814-1.c.diff?cvsroot=gcc&r1=NONE&r2=1.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9814
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