diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f499e2fe04a..0528f17e532 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2008-09-12  Anatoly Sokolov  <aesok@post.ru>
+
+	PR target/37466
+	* config/avr/avr.md (movsi_lreg_const peephole2): Add match_dup for
+	scratch register after 'set' pattern.
+
 2008-09-12  Ulrich Weigand  <Ulrich.Weigand@de.ibm.com>
 
 	* emit-rtl.c (set_reg_attrs_from_value): Fix invalid alignment
diff --git a/gcc/config/avr/avr.md b/gcc/config/avr/avr.md
index 8dad9d8fe80..7a46a3305c4 100644
--- a/gcc/config/avr/avr.md
+++ b/gcc/config/avr/avr.md
@@ -391,10 +391,11 @@
 
 
 
-(define_peephole2
+(define_peephole2 ; movsi_lreg_const
   [(match_scratch:QI 2 "d")
    (set (match_operand:SI 0 "l_register_operand" "")
-        (match_operand:SI 1 "immediate_operand" ""))]
+        (match_operand:SI 1 "immediate_operand" ""))
+   (match_dup 2)]
   "(operands[1] != const0_rtx
     && operands[1] != constm1_rtx)"
   [(parallel [(set (match_dup 0) (match_dup 1))