[Bug rtl-optimization/42589] bswap optimization does not work for 32bit (but for 64bit) on 64bit registers
rguenth at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Sun Jan 3 15:23:00 GMT 2010
------- Comment #6 from rguenth at gcc dot gnu dot org 2010-01-03 15:23 -------
Subject: Bug 42589
Author: rguenth
Date: Sun Jan 3 15:23:29 2010
New Revision: 155588
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155588
Log:
2010-01-03 Richard Guenther <rguenther@suse.de>
PR tree-optimization/42589
* tree-ssa-math-opts.c (execute_optimize_bswap): Allow
double-word expansion of bswap32.
* gcc.target/i386/pr42589.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr42589.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-math-opts.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42589
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