re PR middle-end/43796 (ICE in is_overflow_infinity (tree-vrp.c:184) with...

re PR middle-end/43796 (ICE in is_overflow_infinity (tree-vrp.c:184) with gfortran -fcheck=bounds -O2)

2010-04-19  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/43796
	* tree-vrp.c (adjust_range_with_scev): Lookup init and step
	from SCEV in the lattice.
	(vrp_visit_phi_node): Dump change.

	* gfortran.dg/pr43796.f90: New testcase.

From-SVN: r158520