[gcc]

2014-08-20  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* config/rs6000/rs6000.c (context.h): New include.
	(tree-pass.h): Likewise.
	(make_pass_analyze_swaps): New decl.
	(rs6000_option_override): Register pass_analyze_swaps.
	(swap_web_entry): New subsclass of web_entry_base (df.h).
	(special_handling_values): New enum.
	(union_defs): New function.
	(union_uses): Likewise.
	(insn_is_load_p): Likewise.
	(insn_is_store_p): Likewise.
	(insn_is_swap_p): Likewise.
	(rtx_is_swappable_p): Likewise.
	(insn_is_swappable_p): Likewise.
	(chain_purpose): New enum.
	(chain_contains_only_swaps): New function.
	(mark_swaps_for_removal): Likewise.
	(swap_const_vector_halves): Likewise.
	(adjust_subreg_index): Likewise.
	(permute_load): Likewise.
	(permute_store): Likewise.
	(handle_special_swappables): Likewise.
	(replace_swap_with_copy): Likewise.
	(dump_swap_insn_table): Likewise.
	(rs6000_analyze_swaps): Likewise.
	(pass_data_analyze_swaps): New pass_data.
	(pass_analyze_swaps): New rtl_opt_pass.
	(make_pass_analyze_swaps): New function.
	* config/rs6000/rs6000.opt (moptimize-swaps): New option.

[gcc/testsuite]

2014-08-20  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* gcc.target/powerpc/swaps-p8-1.c: New test.
	* gcc.target/powerpc/swaps-p8-2.c: New test.
	* gcc.target/powerpc/swaps-p8-3.c: New test.
	* gcc.target/powerpc/swaps-p8-4.c: New test.
	* gcc.target/powerpc/swaps-p8-5.c: New test.
	* gcc.target/powerpc/swaps-p8-6.c: New test.
	* gcc.target/powerpc/swaps-p8-7.c: New test.
	* gcc.target/powerpc/swaps-p8-8.c: New test.
	* gcc.target/powerpc/swaps-p8-9.c: New test.
	* gcc.target/powerpc/swaps-p8-10.c: New test.
	* gcc.target/powerpc/swaps-p8-11.c: New test.
	* gcc.target/powerpc/swaps-p8-12.c: New test.

From-SVN: r214254