Re: [PATCH], Add power9 support to GCC, patch #4

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

This patch adds support for the EXTSWSLI instruction that is being added to
PowerPC ISA 3.0 (power9).

I have built this patch (along with patches #2 and #3) with a bootstrap build
on a power8 little endian system.  There were no regressions in the test
suite.  Is this patch ok to install in the trunk once patch #1 has been
installed.

[gcc]
2015-11-08  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/predicates.md (u6bit_cint_operand): New
	predicate, recognize 0..63.

	* config/rs6000/rs6000.c (rs6000_rtx_costs): Adjust the costs if
	the EXTSWSLI instruction is generated.

	* config/rs6000/rs6000.h (TARGET_EXTSWSLI): Add support for ISA
	3.0 EXTSWSLI instruction.
	* config/rs6000/rs6000.md (ashdi3_extswsli): Likewise.
	(ashdi3_extswsli_dot): Likewise.
	(ashdi3_extswsli_dot2): Likewise.

[gcc/testsuite]
2015-11-08  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* gcc.target/powerpc/extswsli-1.c: New file to test EXTSWSLI
	instruction generation.
	* gcc.target/powerpc/extswsli-2.c: Likewise.
	* gcc.target/powerpc/extswsli-3.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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