r216204 - in /branches/match-and-simplify/gcc: ...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Tue Oct 14 14:31:26 2014
New Revision: 216204

URL: https://gcc.gnu.org/viewcvs?rev=216204&root=gcc&view=rev
Log:
2014-10-14  Richard Biener  <rguenther@suse.de>

	* gimple-fold.h (no_follow_ssa_edges): Declare.
	(gimple_fold_stmt_to_constant_1): Add separate valueize hook for
	gimple_simplify, defaulted to no_follow_ssa_edges.
	* gimple-fold.c (fold_stmt): Make old API never follow SSA edges
	when simplifying.
	(no_follow_ssa_edges): New function.
	(gimple_fold_stmt_to_constant_1): Adjust.
	* tree-cfg.c (no_follow_ssa_edges): Remove.
	(replace_uses_by): Use plain fold_stmt again.
	* gimple-match-head.c (gimple_simplify): When simplifying
	a statement do not stop when valueizing its operands yields NULL.

Modified:
    branches/match-and-simplify/gcc/ChangeLog.mas
    branches/match-and-simplify/gcc/gimple-fold.c
    branches/match-and-simplify/gcc/gimple-fold.h
    branches/match-and-simplify/gcc/gimple-match-head.c
    branches/match-and-simplify/gcc/tree-cfg.c