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[Bug tree-optimization/31169] Bootstrap comparison error at revision 122821
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 14 Mar 2007 20:53:41 -0000
- Subject: [Bug tree-optimization/31169] Bootstrap comparison error at revision 122821
- References: <bug-31169-276@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #1 from rguenth at gcc dot gnu dot org 2007-03-14 20:53 -------
--- ChangeLog (revision 122820)
+++ ChangeLog (revision 122821)
@@ -1,3 +1,12 @@
+2007-03-11 Richard Guenther <rguenther@suse.de>
+
+ PR tree-optimization/31115
+ * tree-vrp.c (extract_range_from_binary_expr): Make sure
+ the shift count is positive and non-anti-range for RSHIFT_EXPR.
+ A shift count of zero is not special as with *_DIV_EXPR.
+ (vrp_int_const_binop): Handle RSHIFT_EXPR for determining overflow
+ direction.
+
oh well.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
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CC| |rguenth at gcc dot gnu dot
| |org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31169