Remove some more unused code from ia64 back end.

[Zack Weinberg <zack at codesourcery dot com>]

1) setjmp_operand is unused and appears never to have been used.

2) There is a block of code in got_symbolic_operand which is
   unreachable, and has been so since July 2000. I conclude it's not
   necessary.  It can be pulled back out of CVS if we do want it.

3) It is not necessary to write explicit prototypes in ia64-protos.h
   for predicate functions.  Removing them revealed that
   tls_symbolic_operand had been left out of PREDICATE_CODES.  (Which
   is harmless, because tls_symbolic_operand is never used directly in
   a match_operand expression, but it seems cleanest to me to list
   everything that has the form of an operand predicate.)

Bootstrapped ia64-hpux11.23.

zw

        * config/ia64/ia64.c (setjmp_operand): Delete, unused.
        (got_symbolic_operand): Remove unreachable code.
        * config/ia64/ia64.h (PREDICATE_CODES): Remove entry for
        setjmp_operand; add entry for tls_symbolic_operand.
        * config/ia64/ia64-protos.h: Remove all prototypes of
        predicate functions.

===================================================================
Index: config/ia64/ia64.c
--- config/ia64/ia64.c	29 Jul 2004 07:37:14 -0000	1.312
+++ config/ia64/ia64.c	29 Jul 2004 18:19:46 -0000
@@ -479,22 +479,7 @@ got_symbolic_operand (rtx op, enum machi
       op = XEXP (op, 1);
       if (GET_CODE (op) != CONST_INT)
 	return 0;
-
-	return 1;
-
-      /* Ok if we're not using GOT entries at all.  */
-      if (TARGET_NO_PIC || TARGET_AUTO_PIC)
-	return 1;
-
-      /* "Ok" while emitting rtl, since otherwise we won't be provided
-	 with the entire offset during emission, which makes it very
-	 hard to split the offset into high and low parts.  */
-      if (currently_expanding_to_rtl)
-	return 1;
-
-      /* Force the low 14 bits of the constant to zero so that we do not
-	 use up so many GOT entries.  */
-      return (INTVAL (op) & 0x3fff) == 0;
+      return 1;
 
     case SYMBOL_REF:
       if (SYMBOL_REF_SMALL_ADDR_P (op))
@@ -548,54 +533,6 @@ function_operand (rtx op, enum machine_m
     return 0;
 }
 
-/* Return 1 if OP is setjmp or a similar function.  */
-
-/* ??? This is an unsatisfying solution.  Should rethink.  */
-
-int
-setjmp_operand (rtx op, enum machine_mode mode ATTRIBUTE_UNUSED)
-{
-  const char *name;
-  int retval = 0;
-
-  if (GET_CODE (op) != SYMBOL_REF)
-    return 0;
-
-  name = XSTR (op, 0);
-
-  /* The following code is borrowed from special_function_p in calls.c.  */
-
-  /* Disregard prefix _, __ or __x.  */
-  if (name[0] == '_')
-    {
-      if (name[1] == '_' && name[2] == 'x')
-	name += 3;
-      else if (name[1] == '_')
-	name += 2;
-      else
-	name += 1;
-    }
-
-  if (name[0] == 's')
-    {
-      retval
-	= ((name[1] == 'e'
-	    && (! strcmp (name, "setjmp")
-		|| ! strcmp (name, "setjmp_syscall")))
-	   || (name[1] == 'i'
-	       && ! strcmp (name, "sigsetjmp"))
-	   || (name[1] == 'a'
-	       && ! strcmp (name, "savectx")));
-    }
-  else if ((name[0] == 'q' && name[1] == 's'
-	    && ! strcmp (name, "qsetjmp"))
-	   || (name[0] == 'v' && name[1] == 'f'
-	       && ! strcmp (name, "vfork")))
-    retval = 1;
-
-  return retval;
-}
-
 /* Return 1 if OP is a general operand, excluding tls symbolic operands.  */
 
 int
===================================================================
Index: config/ia64/ia64.h
--- config/ia64/ia64.h	27 Jul 2004 21:41:20 -0000	1.184
+++ config/ia64/ia64.h	29 Jul 2004 18:19:46 -0000
@@ -2150,8 +2150,8 @@ do {									\
 { "sdata_symbolic_operand", {SYMBOL_REF, CONST}},			\
 { "small_addr_symbolic_operand", {SYMBOL_REF}},				\
 { "symbolic_operand", {SYMBOL_REF, CONST, LABEL_REF}},			\
+{ "tls_symbolic_operand", {SYMBOL_REF}},				\
 { "function_operand", {SYMBOL_REF}},					\
-{ "setjmp_operand", {SYMBOL_REF}},					\
 { "destination_operand", {SUBREG, REG, MEM}},				\
 { "not_postinc_memory_operand", {MEM}},					\
 { "move_operand", {SUBREG, REG, MEM, CONST_INT, CONST_DOUBLE,		\
===================================================================
Index: config/ia64/ia64-protos.h
--- config/ia64/ia64-protos.h	14 Jul 2004 06:24:15 -0000	1.65
+++ config/ia64/ia64-protos.h	29 Jul 2004 18:19:46 -0000
@@ -33,47 +33,6 @@ extern int bundling_p;
 extern int ia64_st_address_bypass_p (rtx, rtx);
 extern int ia64_ld_address_bypass_p (rtx, rtx);
 extern int ia64_produce_address_p (rtx);
-extern int call_operand (rtx, enum machine_mode);
-extern int sdata_symbolic_operand (rtx, enum machine_mode);
-extern int got_symbolic_operand (rtx, enum machine_mode);
-extern int symbolic_operand (rtx, enum machine_mode);
-extern int tls_symbolic_operand (rtx, enum machine_mode);
-extern int function_operand (rtx, enum machine_mode);
-extern int setjmp_operand (rtx, enum machine_mode);
-extern int move_operand (rtx, enum machine_mode);
-extern int gr_register_operand (rtx, enum machine_mode);
-extern int fr_register_operand (rtx, enum machine_mode);
-extern int grfr_register_operand (rtx, enum machine_mode);
-extern int gr_nonimmediate_operand (rtx, enum machine_mode);
-extern int fr_nonimmediate_operand (rtx, enum machine_mode);
-extern int grfr_nonimmediate_operand (rtx, enum machine_mode);
-extern int gr_reg_or_0_operand (rtx, enum machine_mode);
-extern int gr_reg_or_5bit_operand (rtx, enum machine_mode);
-extern int gr_reg_or_6bit_operand (rtx, enum machine_mode);
-extern int gr_reg_or_8bit_operand (rtx, enum machine_mode);
-extern int grfr_reg_or_8bit_operand (rtx, enum machine_mode);
-extern int gr_reg_or_8bit_adjusted_operand (rtx, enum machine_mode);
-extern int gr_reg_or_8bit_and_adjusted_operand (rtx, enum machine_mode);
-extern int gr_reg_or_14bit_operand (rtx, enum machine_mode);
-extern int gr_reg_or_22bit_operand (rtx, enum machine_mode);
-extern int shift_count_operand (rtx, enum machine_mode);
-extern int shift_32bit_count_operand (rtx, enum machine_mode);
-extern int shladd_operand (rtx, enum machine_mode);
-extern int fetchadd_operand (rtx, enum machine_mode);
-extern int fr_reg_or_fp01_operand (rtx, enum machine_mode);
-extern int normal_comparison_operator (rtx, enum machine_mode);
-extern int adjusted_comparison_operator (rtx, enum machine_mode);
-extern int signed_inequality_operator (rtx, enum machine_mode);
-extern int destination_operand (rtx, enum machine_mode);
-extern int not_postinc_memory_operand (rtx, enum machine_mode);
-extern int predicate_operator (rtx, enum machine_mode);
-extern int ar_lc_reg_operand (rtx, enum machine_mode);
-extern int ar_ccv_reg_operand (rtx, enum machine_mode);
-extern int ar_pfs_reg_operand (rtx, enum machine_mode);
-extern int general_xfmode_operand (rtx, enum machine_mode);
-extern int destination_xfmode_operand (rtx, enum machine_mode);
-extern int xfreg_or_fp01_operand (rtx, enum machine_mode);
-extern int basereg_operand (rtx, enum machine_mode);
 
 extern rtx ia64_expand_move (rtx, rtx);
 extern int ia64_move_ok (rtx, rtx);