resource.c (mark_referenced_resources): Look inside UNSPEC_VOLATILEs and ASM_INPUTs.

gcc/
	* resource.c (mark_referenced_resources): Look inside
	UNSPEC_VOLATILEs and ASM_INPUTs.

From-SVN: r137375

gcc/ChangeLog

+2008-07-02  Richard Sandiford  <rdsandiford@googlemail.com>
+
+	* resource.c (mark_referenced_resources): Look inside
+	UNSPEC_VOLATILEs and ASM_INPUTs.
+
 2008-07-02  Ian Lance Taylor  <iant@google.com>
 
 	* rtlanal.c (add_reg_note): New function.

gcc/resource.c

@@ -266,13 +266,10 @@ mark_referenced_resources (rtx x, struct resources *res,
       return;
 
     case UNSPEC_VOLATILE:
+    case TRAP_IF:
     case ASM_INPUT:
       /* Traditional asm's are always volatile.  */
       res->volatil = 1;
-      return;
-
-    case TRAP_IF:
-      res->volatil = 1;
       break;
 
     case ASM_OPERANDS: