[Bug middle-end/64225] [4.8/4.9 Regression] -funsafe-math-optimizations generates call to pow where multiply instruction would do
wschmidt at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Wed Dec 10 17:47:00 GMT 2014
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64225
--- Comment #16 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Author: wschmidt
Date: Wed Dec 10 17:46:33 2014
New Revision: 218587
URL: https://gcc.gnu.org/viewcvs?rev=218587&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_8-branch/gcc/ChangeLog
branches/gcc-4_8-branch/gcc/tree-ssa-reassoc.c
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