From: ian <ian@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Fri, 23 Mar 2007 23:17:02 +0000 (+0000)
Subject: 	* tree-vrp.c (operand_less_p): Ignore fold overflow warnings.
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f82ccac1ec646f639a22f876523eaa2200d41b0a;p=thirdparty%2Fgcc.git

	* tree-vrp.c (operand_less_p): Ignore fold overflow warnings.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@123170 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1c034ea51925..2faf42cb20cc 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2007-03-23  Ian Lance Taylor  <iant@google.com>
+
+	* tree-vrp.c (operand_less_p): Ignore fold overflow warnings.
+
 2007-03-23  Steven Bosscher  <steven@gcc.gnu.org>
 
 	* tracer.c (tracer): Don't take FLAGS argument.  Assert we are
diff --git a/gcc/tree-vrp.c b/gcc/tree-vrp.c
index 2fad7790e6f7..262eeb2e37ee 100644
--- a/gcc/tree-vrp.c
+++ b/gcc/tree-vrp.c
@@ -647,7 +647,12 @@ operand_less_p (tree val, tree val2)
     {
       tree tcmp;
 
+      fold_defer_overflow_warnings ();
+
       tcmp = fold_binary_to_constant (LT_EXPR, boolean_type_node, val, val2);
+
+      fold_undefer_and_ignore_overflow_warnings ();
+
       if (!tcmp)
 	return -2;