r256351 - in /trunk/gcc: config/rs6000/rs6000-s...

[acsawdey@gcc.gnu.org]

Author: acsawdey
Date: Mon Jan  8 19:37:33 2018
New Revision: 256351

URL: https://gcc.gnu.org/viewcvs?rev=256351&root=gcc&view=rev
Log:
2018-01-08  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

	* config/rs6000/rs6000-string.c (do_load_for_compare_from_addr): New
	function.
	(do_ifelse): New function.
	(do_isel): New function.
	(do_sub3): New function.
	(do_add3): New function.
	(do_load_mask_compare): New function.
	(do_overlap_load_compare): New function.
	(expand_compare_loop): New function.
	(expand_block_compare): Call expand_compare_loop() when appropriate.
	* config/rs6000/rs6000.opt (-mblock-compare-inline-limit): Change
	option description.
	(-mblock-compare-inline-loop-limit): New option.



Modified:
    trunk/gcc/config/rs6000/rs6000-string.c
    trunk/gcc/config/rs6000/rs6000.opt
    trunk/gcc/testsuite/gcc.dg/memcmp-1.c
    trunk/gcc/testsuite/gcc.dg/strncmp-2.c