r142317 - in /trunk/gcc: ChangeLog testsuite/Ch...

[jakub@gcc.gnu.org]

Author: jakub
Date: Mon Dec  1 14:34:51 2008
New Revision: 142317

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=142317
Log:
	PR rtl-optimization/38245
	* tree-vrp.c (abs_extent_range): New function.
	(extract_range_from_binary_expr): Compute range
	for *_DIV_EXPR even if vr1 is VR_VARYING, VR_ANTI_RANGE
	or includes zero or if vr1 is VR_RANGE and op0 has some
	other range.

	* gcc.dg/pr38245-1.c: New test.
	* gcc.dg/pr38245-2.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr38245-1.c
    trunk/gcc/testsuite/gcc.dg/pr38245-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vrp.c