r167800 - in /trunk/gcc: ChangeLog gimple-fold....

[jakub@gcc.gnu.org]

Author: jakub
Date: Tue Dec 14 14:09:59 2010
New Revision: 167800

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=167800
Log:
	PR tree-optimization/46909
	* gimple-fold.c (and_var_with_comparison_1): Save partial
	result even in the is_and case, if both partial results
	are the same, return it.
	(or_var_with_comparison_1): Use is_or predicate instead of
	innercode == TRUTH_OR_EXPR test.  Save partial result
	even in the is_or case, if both partial results are the
	same, return it.  In the !is_or case when both partial
	results are the same, return the partial result instead
	of boolean_true_node.

	* gcc.c-torture/execute/pr46909-1.c: New test.
	* gcc.c-torture/execute/pr46909-2.c: New test.
	* gcc.dg/pr46909.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr46909-1.c
    trunk/gcc/testsuite/gcc.c-torture/execute/pr46909-2.c
    trunk/gcc/testsuite/gcc.dg/pr46909.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-fold.c
    trunk/gcc/testsuite/ChangeLog