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[Bug middle-end/64225] [4.8/4.9 Regression] -funsafe-math-optimizations generates call to pow where multiply instruction would do
- From: "wschmidt at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 10 Dec 2014 16:53:01 +0000
- Subject: [Bug middle-end/64225] [4.8/4.9 Regression] -funsafe-math-optimizations generates call to pow where multiply instruction would do
- Auto-submitted: auto-generated
- References: <bug-64225-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64225
--- Comment #15 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Author: wschmidt
Date: Wed Dec 10 16:52:29 2014
New Revision: 218586
URL: https://gcc.gnu.org/viewcvs?rev=218586&root=gcc&view=rev
Log:
2014-12-10 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
Backport from mainline:
2014-12-09 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR middle-end/64225
* tree-ssa-reassoc.c (acceptable_pow_call): Disable transformation
for BUILT_IN_POW when flag_errno_math is present.
Modified:
branches/gcc-4_9-branch/gcc/ChangeLog
branches/gcc-4_9-branch/gcc/tree-ssa-reassoc.c