r218141 - in /trunk/gcc: ChangeLog genmatch.c t...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Fri Nov 28 08:57:43 2014
New Revision: 218141

URL: https://gcc.gnu.org/viewcvs?rev=218141&root=gcc&view=rev
Log:
2014-11-28  Richard Biener  <rguenther@suse.de>

	PR middle-end/64084
	* genmatch.c (dt_node::gen_kids_1): New function, split out
	from dt_node::gen_kids.
	(decision_tree::cmp_node): DT_TRUE are generally not equal.
	(decision_tree::find_node): Treat DT_TRUE as barrier for
	node CSE on the same level.
	(dt_node::append_node): Do not keep DT_TRUE last.
	(dt_node::gen_kids): Emit code after each DT_TRUE node seen.

	* gcc.dg/tree-ssa/ssa-ccp-34.c: New testcase.
	* gcc.dg/tree-ssa/forwprop-31.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/forwprop-31.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-34.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/genmatch.c
    trunk/gcc/testsuite/ChangeLog