gimple-fold.h (gimple_fold_stmt_to_constant_1): Add 2nd valueization hook defaulted to no_follow_ssa_edges.

2014-11-14  Richard Biener  <rguenther@suse.de>

	* gimple-fold.h (gimple_fold_stmt_to_constant_1): Add 2nd
	valueization hook defaulted to no_follow_ssa_edges.
	* gimple-fold.c (gimple_fold_stmt_to_constant_1): Pass
	2nd valueization hook to gimple_simplify.
	* tree-ssa-ccp.c (valueize_op_1): New function to be
	used for gimple_simplify called via gimple_fold_stmt_to_constant_1.
	(ccp_fold): Adjust.
	* tree-vrp.c (vrp_valueize_1): New function to be
	used for gimple_simplify called via gimple_fold_stmt_to_constant_1.
	(vrp_visit_assignment_or_call): Adjust.

From-SVN: r217560