[Bug c++/41094] Erroneous optimization of pow() with -ffast-math
rguenth at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Mon Aug 24 09:56:00 GMT 2009
------- Comment #5 from rguenth at gcc dot gnu dot org 2009-08-24 09:56 -------
Subject: Bug 41094
Author: rguenth
Date: Mon Aug 24 09:56:30 2009
New Revision: 151052
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=151052
Log:
2009-08-24 Richard Guenther <rguenther@suse.de>
PR middle-end/41094
* builtins.c (fold_builtin_pow): Fold pow(pow(x,y),z) to
pow(x,y*z) only if x is nonnegative.
* gcc.dg/torture/pr41094.c: New testcase.
* gcc.dg/torture/builtin-power-1.c: Adjust.
* gcc.dg/builtins-10.c: Likewise.
Added:
branches/gcc-4_3-branch/gcc/testsuite/gcc.dg/torture/pr41094.c
Modified:
branches/gcc-4_3-branch/gcc/ChangeLog
branches/gcc-4_3-branch/gcc/builtins.c
branches/gcc-4_3-branch/gcc/testsuite/ChangeLog
branches/gcc-4_3-branch/gcc/testsuite/gcc.dg/builtins-10.c
branches/gcc-4_3-branch/gcc/testsuite/gcc.dg/torture/builtin-power-1.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41094
More information about the Gcc-bugs
mailing list