This patch disables -mcpu=power8/-mtune=power8 from setting -mpower8-fusion and
-mcpu=power9/-mtune=power9 from setting -mpower9-fusion. I will look at the
earlyclobber that Bernd Schmidt mentioned, but for now it may be safest to just
disable it for GCC 6.0.
I built it on a little endian power8 system, and there were no regressions. Is
it ok to install?
[gcc]
2016-02-10 Michael Meissner <meiss...@linux.vnet.ibm.com>
PR target/68404
* config/rs6000/predicates.md (fusion_gpr_addis): Revert
2016-02-09 change.
* config/rs6000/rs6000-cpus.def (ISA_2_7_MASKS_SERVER): Do not set
power8/power9 fusion by default.
(ISA_3_0_MASKS_SERVER): Likewise.
* config/rs6000/rs6000.c (rs6000_option_override_internal): Remove
code setting -mpower8-fusion if -mtune=power8 and -mpower9-fusion
if -mtune=power9.
* doc/invoke.texi (RS/6000 and PowerPC Options): Document that
-mpower8-fusion and -mpower9-fusion are not set by default.
[gcc/testsuites]
2016-02-10 Michael Meissner <meiss...@linux.vnet.ibm.com>
PR target/68404
* gcc.target/powerpc/fusion.c: Do not assume that -mtune=power8
sets -mpower8-fusion or -mtune=power9 sets -mpower9-fusion.
* gcc.target/powerpc/fusion2.c: Likewise.
* gcc.target/powerpc/fusion3.c: Likewise.
--
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
email: meiss...@linux.vnet.ibm.com, phone: +1 (978) 899-4797
