genemit.c (gen_expand): Do not emit "_done" or "_fail" labels.

        * genemit.c (gen_expand): Do not emit "_done" or "_fail" labels.
        (gen_split): Likewise.
        (main): Rework generated definitions of DONE and FAIL so that they
        no longer use gotos.  Avoids warnings about unused labels.

From-SVN: r18879

gcc/ChangeLog

 Sat Mar 28 14:37:20 1998  Jeffrey A Law  (law@cygnus.com)
 
+	* genemit.c (gen_expand): Do not emit "_done" or "_fail" labels.
+	(gen_split): Likewise.
+	(main): Rework generated definitions of DONE and FAIL so that they
+	no longer use gotos.  Avoids warnings about unused labels.
+
 	* integrate.c (copy_rtx_and_substitute): Rework to avoid need for
 	unused "junk" variable.
 

gcc/genemit.c

@@ -496,9 +496,7 @@ gen_expand (expand)
   /* Call `gen_sequence' to make a SEQUENCE out of all the
      insns emitted within this gen_... function.  */
 
-  printf (" _done:\n");
   printf ("  _val = gen_sequence ();\n");
-  printf (" _fail:\n");
   printf ("  end_sequence ();\n");
   printf ("  return _val;\n}\n\n");
 }
@@ -586,9 +584,7 @@ gen_split (split)
   /* Call `gen_sequence' to make a SEQUENCE out of all the
      insns emitted within this gen_... function.  */
 
-  printf (" _done:\n");
   printf ("  _val = gen_sequence ();\n");
-  printf (" _fail:\n");
   printf ("  end_sequence ();\n");
   printf ("  return _val;\n}\n\n");
 }
@@ -753,8 +749,8 @@ from the machine description file `md'.  */\n\n");
   printf ("extern char *insn_operand_constraint[][MAX_RECOG_OPERANDS];\n\n");
   printf ("extern rtx recog_operand[];\n");
   printf ("#define operands emit_operand\n\n");
-  printf ("#define FAIL goto _fail\n\n");
-  printf ("#define DONE goto _done\n\n");
+  printf ("#define FAIL {end_sequence (); return _val;}\n");
+  printf ("#define DONE {_val = gen_sequence (); end_sequence (); return _val;}\n");
 
   /* Read the machine description.  */