re PR target/51643 (Incorrect code produced for tail-call of weak function with -O2/-O3 option)

	PR target/51643
	* arm.c (arm_function_ok_for_sibcall): Use DECL_WEAK in previous
	change.

From-SVN: r182628

gcc/ChangeLog

+2011-12-21  Richard Earnshaw  <rearnsha@arm.com>
+
+	PR target/51643
+	* arm.c (arm_function_ok_for_sibcall): Use DECL_WEAK in previous
+	change.
+
 2011-12-22  Tristan Gingold  <gingold@adacore.com>
 
 	* config/ia64/ia64.c (ia64_promote_function_mode): Remove.

gcc/config/arm/arm.c

@@ -5255,7 +5255,7 @@ arm_function_ok_for_sibcall (tree decl, tree exp)
      sibling calls.  */
   if (TARGET_AAPCS_BASED
       && arm_abi == ARM_ABI_AAPCS
-      && lookup_attribute ("weak", DECL_ATTRIBUTES (decl)))
+      && DECL_WEAK (decl))
     return false;
 
   /* Everything else is ok.  */