re PR tree-optimization/53070 (ICE: in execute_cse_reciprocals, at tree-ssa-math-opts.c:513 with -O -ffast-math -ftree-loop-if-convert -fno-tree-loop-im)

2012-04-23  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/53070
	* tree-if-conv.c (combine_blocks): Free predicates in all blocks.
	(main_tree_if_conversion): Verify we succeeded in that.

	* gcc.dg/torture/pr53070.c: New testcase.

From-SVN: r186704