Warning fixes:

	* mips.h (REG_CLASS_FROM_LETTER): Cast array arg to unsigned char.

	* sparc.c (load_pic_register): Delete unused varaible.

	* libgcc2.c (__addvsi3): Delete unused variable.

	* libgcc2.h (__absvsi2, __absvdi2, __addvsi3, __addvdi3,
	__subvsi3, __subvdi3, __mulvsi3, __mulvdi3, __negvsi2,
	__negvdi2): Prototype.

	* ssa.c (apply_delayed_renames): Avoid undefined operation.

	* toplev.c (display_target_options): Make static to match
	prototype.  Delete empty declaration.

From-SVN: r36987

gcc/ChangeLog

+2000-10-20  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* mips.h (REG_CLASS_FROM_LETTER): Cast array arg to unsigned char.
+
+	* sparc.c (load_pic_register): Delete unused varaible.
+
+	* libgcc2.c (__addvsi3): Delete unused variable.
+
+	* libgcc2.h (__absvsi2, __absvdi2, __addvsi3, __addvdi3,
+	__subvsi3, __subvdi3, __mulvsi3, __mulvdi3, __negvsi2,
+	__negvdi2): Prototype.
+
+	* ssa.c (apply_delayed_renames): Avoid undefined operation.
+
+	* toplev.c (display_target_options): Make static to match
+	prototype.  Delete empty declaration.
+
 2000-10-20  Tom Tromey  <tromey@cygnus.com>
 
 	* cppspec.c (DEFAULT_WORD_SWITCH_TAKES_ARG): Added -MF and -MT.

gcc/config/mips/mips.h

@@ -1902,7 +1902,7 @@ extern enum reg_class mips_regno_to_class[];
 
 extern enum reg_class mips_char_to_class[];
 
-#define REG_CLASS_FROM_LETTER(C) mips_char_to_class[ (C) ]
+#define REG_CLASS_FROM_LETTER(C) mips_char_to_class[(unsigned char)(C)]
 
 /* The letters I, J, K, L, M, N, O, and P in a register constraint
    string can be used to stand for particular ranges of immediate

gcc/config/sparc/sparc.c

@@ -2836,7 +2836,6 @@ load_pic_register ()
 {
   /* Labels to get the PC in the prologue of this function.  */
   int orig_flag_pic = flag_pic;
-  rtx insn;
 
   if (! flag_pic)
     abort ();

gcc/libgcc2.c

@@ -69,7 +69,7 @@ __negdi2 (DWtype u)
 SItype
 __addvsi3 (SItype a, SItype b)
 {
-  SItype w, w1;
+  SItype w;
 
   w = a + b;
 

gcc/libgcc2.h

@@ -256,6 +256,17 @@ extern UWtype __udiv_w_sdiv (UWtype *, UWtype, UWtype, UWtype);
 extern word_type __cmpdi2 (DWtype, DWtype);
 extern word_type __ucmpdi2 (DWtype, DWtype);
 
+extern SItype __absvsi2 (SItype);
+extern DItype __absvdi2 (DItype);
+extern SItype __addvsi3 (SItype, SItype);
+extern DItype __addvdi3 (DItype, DItype);
+extern SItype __subvsi3 (SItype, SItype);
+extern DItype __subvdi3 (DItype, DItype);
+extern SItype __mulvsi3 (SItype, SItype);
+extern DItype __mulvdi3 (DItype, DItype);
+extern SItype __negvsi2 (SItype);
+extern DItype __negvdi2 (DItype);
+
 #if BITS_PER_UNIT == 8
 extern DWtype __fixdfdi (DFtype);
 extern DWtype __fixsfdi (SFtype);

gcc/ssa.c

@@ -826,8 +826,8 @@ apply_delayed_renames (c)
       if (new_regno >= (int) ssa_definition->num_elements)
 	{
 	  int new_limit = new_regno * 5 / 4;
-	  ssa_definition = VARRAY_GROW (ssa_definition, new_limit);
-	  ssa_uses = VARRAY_GROW (ssa_uses, new_limit);
+	  VARRAY_GROW (ssa_definition, new_limit);
+	  VARRAY_GROW (ssa_uses, new_limit);
 	}
 
       VARRAY_RTX (ssa_definition, new_regno) = r->set_insn;

gcc/toplev.c

@@ -3894,11 +3894,10 @@ display_help ()
   display_target_options ();
 }
 
-void
+static void
 display_target_options ()
 {
   int undoc,i;
-  unsigned long;
 
   if (ARRAY_SIZE (target_switches) > 1
 #ifdef TARGET_OPTIONS