From: Marek Polacek <polacek@redhat.com>
Date: Wed, 26 Mar 2014 06:46:27 +0000 (+0000)
Subject: re PR other/59545 (Signed integer overflow issues)
X-Git-Tag: releases/gcc-4.9.0~301
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6686e0bc1e8b83aed19f383b527bc67b5ba53480;p=thirdparty%2Fgcc.git

re PR other/59545 (Signed integer overflow issues)

	PR other/59545
	* ira-color.c (update_conflict_hard_regno_costs): Perform the
	multiplication in unsigned type.

From-SVN: r208834
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index dc4ebfe38e6a..ee0df1c23e9b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2014-03-26  Marek Polacek  <polacek@redhat.com>
+
+	PR other/59545
+	* ira-color.c (update_conflict_hard_regno_costs): Perform the
+	multiplication in unsigned type.
+
 2014-03-26  Chung-Ju Wu  <jasonwucj@gmail.com>
 
 	* doc/install.texi: Document nds32le-*-elf and nds32be-*-elf.
diff --git a/gcc/ira-color.c b/gcc/ira-color.c
index c20aaf72dc60..1f4c96e9a897 100644
--- a/gcc/ira-color.c
+++ b/gcc/ira-color.c
@@ -1505,7 +1505,7 @@ update_conflict_hard_regno_costs (int *costs, enum reg_class aclass,
 		index = ira_class_hard_reg_index[aclass][hard_regno];
 		if (index < 0)
 		  continue;
-		cost = conflict_costs [i] * mult / div;
+		cost = (int) ((unsigned) conflict_costs [i] * mult) / div;
 		if (cost == 0)
 		  continue;
 		cont_p = true;