re PR target/49816 (arm.c:3999:12: error: converting 'false' to pointer type 'rtx')

	PR target/49816
	* arm.c (aapcs_vfp_allocate_return_reg): Return NULL on failure.

From-SVN: r176687

gcc/ChangeLog

+2011-07-23  Richard Earnshaw  <rearnsha@arm.com>
+
+	PR target/49816
+	* arm.c (aapcs_vfp_allocate_return_reg): Return NULL on failure.
+
 2011-07-22  Jason Merrill  <jason@redhat.com>
 
 	* doc/invoke.texi (C++ Dialect Options): Document -Wno-narrowing.

gcc/config/arm/arm.c

@@ -3996,7 +3996,7 @@ aapcs_vfp_allocate_return_reg (enum arm_pcs pcs_variant ATTRIBUTE_UNUSED,
 			       const_tree type ATTRIBUTE_UNUSED)
 {
   if (!use_vfp_abi (pcs_variant, false))
-    return false;
+    return NULL;
 
   if (mode == BLKmode || (mode == TImode && !TARGET_NEON))
     {