gcc/
	PR tree-optimization/21563
	* tree-vrp.c (compare_value): Return boolean_false_node when
	SSA_NAME in "if (SSA_NAME == CST)" is strictly smaller than or
	strictly larger than CST.

testsuite/
	PR tree-optimization/21563
	* gcc.dg/tree-ssa/pr21563.c: New.

From-SVN: r99705