re PR tree-optimization/58794 (ICE in set_lattice_value, at tree-ssa-ccp.c:455 on x86_64-linux-gnu (at -O1, -O2, and -O3))

2013-10-21  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/58794
	* fold-const.c (operand_equal_p): Compare FIELD_DECL operand
	of COMPONENT_REFs with OEP_CONSTANT_ADDRESS_OF left in place.

	* c-c++-common/torture/pr58794-1.c: New testcase.
	* c-c++-common/torture/pr58794-2.c: Likewise.

From-SVN: r203891