re PR target/42372 (Regrename reuses non-dead register)

	PR target/42372
	* arm.md (pic_add_dot_plus_eight): Change output constraint from
	update to write.

From-SVN: r155310

gcc/ChangeLog

+2009-12-17  Richard Earnshaw  <rearnsha@arm.com>
+
+	PR target/42372
+	* arm.md (pic_add_dot_plus_eight): Change output constraint from
+	update to write.
+
 2009-12-17  Shujing Zhao  <pearly.zhao@oracle.com>
 
 	* config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):

gcc/config/arm/arm.md

@@ -5292,7 +5292,7 @@
 )
 
 (define_insn "tls_load_dot_plus_eight"
-  [(set (match_operand:SI 0 "register_operand" "+r")
+  [(set (match_operand:SI 0 "register_operand" "=r")
 	(mem:SI (unspec:SI [(match_operand:SI 1 "register_operand" "r")
 			    (const_int 8)
 			    (match_operand 2 "" "")]