[Bug rtl-optimization/42589] bswap optimization does not work for 32bit (but for 64bit) on 64bit registers

[rguenth at gcc dot gnu dot org]

------- 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  <rguent...@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