rs6000.c (special_handling_values): Add SH_EXTRACT.

rs6000.c (special_handling_values): Add SH_EXTRACT.

[gcc]

2014-09-04  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* config/rs6000/rs6000.c (special_handling_values): Add
	SH_EXTRACT.
	(rtx_is_swappable_p): Look for patterns with a VEC_SELECT, perhaps
	wrapped in a VEC_DUPLICATE, representing an extract.  Mark these
	as swappable with special handling SH_EXTRACT.  Remove
	UNSPEC_VSX_XXSPLTW from the list of disallowed unspecs for the
	optimization.
	(adjust_extract): New function.
	(handle_special_swappables): Add default to case statement; add
	case for SH_EXTRACT that calls adjust_extract.
	(dump_swap_insn_table): Handle SH_EXTRACT.

[gcc/testsuite]

2014-09-04  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* gcc.target/powerpc/swaps-p8-13.c: New test.
	* gcc.target/powerpc/swaps-p8-14.c: New test.
	* gcc.target/powerpc/swaps-p8-15.c: New test.

From-SVN: r214903