r239357 - in /trunk/gcc: ChangeLog cfgloopmanip...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Thu Aug 11 09:02:04 2016
New Revision: 239357

URL: https://gcc.gnu.org/viewcvs?rev=239357&root=gcc&view=rev
Log:
2016-08-11  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/72772
	* cfgloopmanip.c (create_preheader): Use split_edge if there
	is a single loop entry, avoiding degenerate PHIs.

	* gcc.dg/graphite/pr35356-1.c: Adjust.
	* gcc.dg/tree-ssa/pr59597.c: Likewise.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cfgloopmanip.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/graphite/pr35356-1.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr59597.c