[PATCH], PowerPC, Add -mpower9-dform to switches turned on with -mcpu=power9

Michael Meissner meissner@linux.vnet.ibm.com
Thu Dec 31 20:41:00 GMT 2015


When I did the inital d-form support for ISA 3.0 (power9) for loading scalar
SF/DF values into Altivec registers, I did not enable -mpower9-dform with the
other ISA 3.0 switches when you used -mcpu=power9.  This was during the initial
development, I had some bugs.  I fixed the bugs, but I forgot to enable the
d-form addressing support.  This patch enables that default.

I have built all of Spec 2006 with this option, and there were no failures.  I
did not do the full bootstrap/make check right now, but I have done it in the
past with no regressions.  Is it ok to install this patch?

2015-12-31  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/rs6000-cpus.def (ISA_3_0_MASKS_SERVER): Add
	OPTION_MASK_P9_DFORM.

(Note, at some point there will be patches to enable using d-form addressing
with 128-bit vector types, but those patches aren't ready yet).

-- 
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
email: meissner@linux.vnet.ibm.com, phone: +1 (978) 899-4797
-------------- next part --------------
Index: gcc/config/rs6000/rs6000-cpus.def
===================================================================
--- gcc/config/rs6000/rs6000-cpus.def	(revision 232017)
+++ gcc/config/rs6000/rs6000-cpus.def	(working copy)
@@ -67,6 +67,7 @@
 				 | OPTION_MASK_ISEL			\
 				 | OPTION_MASK_MODULO			\
 				 | OPTION_MASK_P9_FUSION		\
+				 | OPTION_MASK_P9_DFORM			\
 				 | OPTION_MASK_P9_VECTOR)
 
 #define POWERPC_7400_MASK	(OPTION_MASK_PPC_GFXOPT | OPTION_MASK_ALTIVEC)


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