diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 99028e8b1e3..82f6b3d72c7 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2009-07-26  Mikael Pettersson <mikpe@it.uu.se>
+
+	* arm.md (negdi2): Use DImode if forcing a value into a register.
+
 2009-07-26  Ira Rosen  <irar@il.ibm.com>
 
 	PR tree-optimization/40801
diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 863a6705ba3..5d12f902502 100644
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -3507,7 +3507,7 @@
   if (TARGET_THUMB1)
     {
       if (GET_CODE (operands[1]) != REG)
-        operands[1] = force_reg (SImode, operands[1]);
+        operands[1] = force_reg (DImode, operands[1]);
      }
   "
 )