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[Bug middle-end/25620] Missed optimization with power
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 27 Nov 2006 11:38:54 -0000
- Subject: [Bug middle-end/25620] Missed optimization with power
- References: <bug-25620-6642@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #14 from rguenth at gcc dot gnu dot org 2006-11-27 11:38 -------
Subject: Bug 25620
Author: rguenth
Date: Mon Nov 27 11:38:42 2006
New Revision: 119248
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=119248
Log:
2006-11-27 Richard Guenther <rguenther@suse.de>
PR middle-end/25620
* builtins.c (expand_builtin_pow): Optimize non integer valued
constant exponents using sqrt or cbrt if possible. Always fall back
to expanding via optabs.
* gcc.target/i386/pow-1.c: New testcase.
* gcc.dg/builtins-58.c: Likewise.
Added:
trunk/gcc/testsuite/gcc.dg/builtins-58.c
trunk/gcc/testsuite/gcc.target/i386/pow-1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/builtins.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25620