r239013 - in /trunk/gcc: ChangeLog config/rs600...

Wed Aug 3 00:42:00 GMT 2016

Author: amodra
Date: Wed Aug  3 00:42:06 2016
New Revision: 239013

URL: https://gcc.gnu.org/viewcvs?rev=239013&root=gcc&view=rev
Log:
[RS6000] power8 unaligned fp load/store

According to the POWER8 Processor Userâ€™s Manual and some
experimentation on power8 hardware, unaligned fp load/store on power8
does not invoke the alignment interrupt.

	* config/rs6000/rs6000.h (SLOW_UNALIGNED_ACCESS): Make scalar
	float access depend on TARGET_EFFICIENT_UNALIGNED_VSX.
	* config/rs6000/rs6000.opt (-mefficient-unaligned-vsx): Renamed
	from -mefficient-unaligned-vector.  Note that this affects fp too.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/rs6000/rs6000.h
    trunk/gcc/config/rs6000/rs6000.opt