re PR target/33604 (Revision 119502 causes significantly slower results with 4.3...

re PR target/33604 (Revision 119502 causes significantly slower results with 4.3/4.4 compared to 4.2)

2007-11-09  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/33604
	* tree-ssa-forwprop.c (tree_ssa_forward_propagate_single_use_vars):
	Disregard changes in CV qualifiers of pointed to types for
	forward propagating ADDR_EXPRs.
	* tree-ssa-ccp.c (fold_stmt_r): Preserve volatileness of the original
	expression.

	* g++.dg/tree-ssa/pr33604.C: New testcase.
	* gcc.dg/pr32721.c: Adjust pattern.

From-SVN: r130040