Re: [PATCH], Fix PowerPC bug 71677, make xalancbmk build in Spec 2006

[Michael Meissner <meissner at linux dot vnet dot ibm dot com>]

On Wed, Jun 29, 2016 at 06:06:04PM -0500, Segher Boessenkool wrote:
> On Wed, Jun 29, 2016 at 05:58:37PM -0400, Michael Meissner wrote:
> > Assuming there are no regressions in power7, are these patches ok to install in
> > the trunk, and backport to GCC 6.2 after a burn-in period?
> 
> Yes, this is fine, thanks for the changes.  Okay for 6 too.
> 
> > 	* config/rs6000/constraints.md (wY constraint): New constraint to
> > 	match the requirements for the LXSD and STXSD instructions.
> 
> It is nice that wY was still available :-)

:-)

Here is the patch I committed, subversion id 237864:

[gcc]
2016-06-29  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/predicates.md (const_0_to_7_operand): New
	predicate, recognize 0..7.
	* config/rs6000/rs6000.c (rs6000_expand_vector_extract): Add
	support for doing extracts from V16QImode, V8HImode, V4SImode
	under ISA 3.0.
	* config/rs6000/vsx.md (VSX_EXTRACT_I): Mode iterator for ISA 3.0
	vector extract support.
	(VSX_EXTRACT_PREDICATE): Mode attribute to validate element number
	for ISA 3.0 vector extract.
	(VSX_EX): Constraints to use for ISA 3.0 vector extract.
	(vsx_extract_<mode>, VSX_EXTRACT_I): Add support for doing
	extracts of a constant element number from small integer vectors
	on 64-bit ISA 3.0 systems.
	(vsx_extract_<mode>_di): Likewise.
	* config/rs6000/rs6000.h (TARGET_VEXTRACTUB): New target macro to
	say when we can do ISA 3.0 vector extracts.
	* config/rs6000/rs6000.md (stfiwx): Allow DImode in Altivec
	registers, using the stxsiwx instruction.

[gcc/testsuite]
2016-06-29  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* gcc.target/powerpc/p9-extract-1.c: New file to test ISA 3.0
	vector extract instructions.
	* gcc.target/powerpc/p9-extract-2.c: Likewise.

-- 
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

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