r219362 - in /trunk/gcc: ChangeLog params.def t...

[jakub@gcc.gnu.org]

Author: jakub
Date: Thu Jan  8 21:30:56 2015
New Revision: 219362

URL: https://gcc.gnu.org/viewcvs?rev=219362&root=gcc&view=rev
Log:
	PR tree-optimization/63989
	* params.def (PARAM_MAX_TRACKED_STRLENS): Increment default
	from 1000 to 10000.
	* tree-ssa-strlen.c (get_strinfo): Moved earlier.
	(get_stridx): If we don't have a record for certain SSA_NAME,
	but it is POINTER_PLUS_EXPR of some SSA_NAME we do with
	constant offset, call get_stridx_plus_constant.
	(get_stridx_plus_constant): New function.
	(zero_length_string): Don't use get_stridx here.

	* gcc.dg/strlenopt-27.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/strlenopt-27.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/params.def
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-strlen.c