stmt.c (expand_asm_operands): If an ASM has no outputs, then treat it as volatile.

	* stmt.c (expand_asm_operands): If an ASM has no outputs, then treat
	it as volatile.

From-SVN: r17100

gcc/ChangeLog

+Mon Dec 15 08:48:24 1997  Jeffrey A Law  (law@cygnus.com)
+
+	* stmt.c (expand_asm_operands): If an ASM has no outputs, then treat
+	it as volatile.
+
 Mon Dec 15 00:04:48 1997  Jeffrey A Law  (law@cygnus.com)
 
         * haifa-sched.c (remove_dependencies): Set RTX_INTEGRATED_P on

gcc/stmt.c

@@ -1421,6 +1421,10 @@ expand_asm_operands (string, outputs, inputs, clobbers, vol, filename, line)
   /* The insn we have emitted.  */
   rtx insn;
 
+  /* An ASM with no outputs needs to be treated as volatile.  */
+  if (noutputs == 0)
+    vol = 1;
+
   if (output_bytecode)
     {
       error ("`asm' is invalid when generating bytecode");