r255835 - in /trunk/gcc: ChangeLog testsuite/Ch...

[jakub@gcc.gnu.org]

Author: jakub
Date: Tue Dec 19 18:10:04 2017
New Revision: 255835

URL: https://gcc.gnu.org/viewcvs?rev=255835&root=gcc&view=rev
Log:
	PR tree-optimization/83444
	* tree-ssa-strlen.c (strlen_check_and_optimize_stmt): For the
	character load case, if get_stridx on MEM_REF's operand doesn't
	look usable, retry with get_addr_stridx.

	* gcc.dg/strlenopt-38.c: New test.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/strlenopt-38.c
    trunk/gcc/tree-ssa-strlen.c