2005-10-05  Steven Bosscher  <stevenb@suse.de>
gcc/
	PR tree-optimization/23049
	* tree-ssa-dom.c (thread_across_edge): Make sure that the condition
	of a COND_EXPR is folded before calling fold on the whole rhs of a
	conditional assignment.
	* doc/tree-ssa.texi: Update the GIMPLE grammar for a valid rhs to
	document that a COND_EXPR may appear there.

testsuite/
	* gcc.dg/pr23049.c: New test.

	* gcc.dg/ucnid-4.c: Fix test.

From-SVN: r104938