rtlanal.c (may_trap_p): Consider old-style and volatile asms to trap.

        * rtlanal.c (may_trap_p): Consider old-style and volatile
        asms to trap.

From-SVN: r33787

gcc/ChangeLog

+2000-05-08  Richard Henderson  <rth@cygnus.com>
+
+	* rtlanal.c (may_trap_p): Consider old-style and volatile
+	asms to trap.
+
 Mon May  8 17:16:48 2000  Jim Wilson  <wilson@cygnus.com>
 
 	* config/ia64/ia64.h (RETURN_ADDR_RTX): Use COUNT not count.

gcc/rtlanal.c

@@ -1743,11 +1743,14 @@ may_trap_p (x)
     case SCRATCH:
       return 0;
 
-      /* Conditional trap can trap!  */
+    case ASM_INPUT:
     case UNSPEC_VOLATILE:
     case TRAP_IF:
       return 1;
 
+    case ASM_OPERANDS:
+      return MEM_VOLATILE_P (x);
+
       /* Memory ref can trap unless it's a static var or a stack slot.  */
     case MEM:
       return rtx_addr_can_trap_p (XEXP (x, 0));