r245057 - in /trunk/gcc: ChangeLog bitmap.h tes...

[aldyh@gcc.gnu.org]

Author: aldyh
Date: Tue Jan 31 10:30:47 2017
New Revision: 245057

URL: https://gcc.gnu.org/viewcvs?rev=245057&root=gcc&view=rev
Log:
	PR tree-optimization/71691
	* bitmap.h (class auto_bitmap): New.
	* tree-ssa-loop-unswitch.c (tree_may_unswitch_on): Call
	is_maybe_undefined instead of ssa_undefined_value_p.

Added:
    trunk/gcc/testsuite/gcc.dg/loop-unswitch-5.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/bitmap.h
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/loop-unswitch-1.c
    trunk/gcc/tree-ssa-loop-unswitch.c