2014-11-16  Patrick Palka  <ppalka@gcc.gnu.org>

gcc/
	PR middle-end/63790
	* tree-ssa-forwprop.c (forward_propagate_into_comparison_1):
	Always combine comparisons or conversions from booleans.

gcc/testsuite/
	PR middle-end/63790
	* gcc.dg/tree-ssa/pr21031.c: Drop XFAIL.
	* gcc.dg/tree-ssa/forwprop-29.c: New test.

From-SVN: r217638