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[Bug tree-optimization/15256] [tree-ssa] Optimize manual bitfield manipilation.
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 1 May 2005 04:16:46 -0000
- Subject: [Bug tree-optimization/15256] [tree-ssa] Optimize manual bitfield manipilation.
- References: <20040503080351.15256.kazu@cs.umass.edu>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-05-01 04:16 -------
If fold optimized the following function:
unsigned int
foo (unsigned int eax)
{
return (eax & 1) ^ 1 | (eax & 0xfffffffe);
}
Then the tree combiner might be able to optimize the orginal one.
--
What |Removed |Added
----------------------------------------------------------------------------
OtherBugsDependingO|19466 |15459, 19987
nThis| |
Last reconfirmed|2004-11-22 02:00:52 |2005-05-01 04:16:44
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15256