Remove unused function

From-SVN: r45131

gcc/ChangeLog

@@ -1,3 +1,10 @@
+2001-08-23  Lars Brinkhoff  <lars@nocrew.org>
+
+	* config/mcore/mcore.h (MACHINE_DEPENDENT_SIMPLIFY): Remove.
+	* config/mcore/mcore.c (mcore_dependent_simplify_rtx): Likewise.
+	* config/mcore/mcore-protos.h (mcore_dependent_simplify_rtx):
+	Remove prototype.
+
 2001-08-23  Lars Brinkhoff  <lars@nocrew.org>
 
 	* genconstants.c, genpreds.c, libfuncs.h, optabs.h, rtl-error.h:

gcc/config/mcore/mcore-protos.h

@@ -63,7 +63,6 @@ extern int          mcore_is_dead                	PARAMS ((rtx, rtx));
 extern int          mcore_expand_insv            	PARAMS ((rtx *));
 extern int          mcore_modify_comparison      	PARAMS ((RTX_CODE));
 extern void         mcore_expand_block_move      	PARAMS ((rtx, rtx, rtx *));
-extern rtx          mcore_dependent_simplify_rtx	PARAMS ((rtx, int, int, int, int *));
 extern void         mcore_dependent_reorg        	PARAMS ((rtx));
 extern int          mcore_const_costs            	PARAMS ((rtx, RTX_CODE));
 extern int          mcore_and_cost               	PARAMS ((rtx));

gcc/config/mcore/mcore.c

@@ -2615,70 +2615,6 @@ mcore_output_jump_label_table ()
   return "";
 }
 
-#if 0 /* XXX temporarily suppressed until I have time to look at what this code does.  */
-
-/* We need these below.  They use information stored in tables to figure out
-   what values are in what registers, etc.  This is okay, since these tables
-   are valid at the time mcore_dependent_simplify_rtx() is invoked.  Don't
-   use them anywhere else.  BRC  */
-
-extern unsigned HOST_WIDE_INT nonzero_bits PARAMS ((rtx, enum machine_mode));
-extern int num_sign_bit_copies PARAMS ((Rtx, enum machine_mode));
-
-/* Do machine dependent simplifications: see simplify_rtx() in combine.c.
-   GENERAL_SIMPLIFY controls whether general machine independent 
-   simplifications should be tried after machine dependent ones.  Thus,
-   we can filter out certain simplifications and keep the simplify_rtx()
-   from changing things that we just simplified in a machine dependent
-   fashion.  This is experimental.  BRC  */
-rtx
-mcore_dependent_simplify_rtx (x, int_op0_mode, last, in_dest, general_simplify)
-     rtx x;
-     int int_op0_mode;
-     int last;
-     int in_dest;
-     int * general_simplify;
-{
-  enum machine_mode mode = GET_MODE (x);
-  enum rtx_code code = GET_CODE (x);
-
-  /* Always simplify unless explicitly asked not to.  */
-  * general_simplify = 1;
-
-  if (code == IF_THEN_ELSE)
-    {
-      int i;
-      rtx cond = XEXP(x, 0);
-      rtx true_rtx = XEXP(x, 1);
-      rtx false_rtx = XEXP(x, 2);
-      enum rtx_code true_code = GET_CODE (cond);
-
-      /* On the mcore, when doing -mcmov-one, we don't want to simplify:
-
-	 (if_then_else (ne A 0) C1 0)
-
-         if it would be turned into a shift by simplify_if_then_else().
-         instead, leave it alone so that it will collapse into a conditional
-         move.  besides, at least for the mcore, doing this simplification does
-         not typically help.  see combine.c, line 4217.  BRC  */
-
-      if (true_code == NE && XEXP (cond, 1) == const0_rtx
-	  && false_rtx == const0_rtx && GET_CODE (true_rtx) == CONST_INT
-	  && ((1 == nonzero_bits (XEXP (cond, 0), mode)
-	       && (i = exact_log2 (INTVAL (true_rtx))) >= 0)
-	      || ((num_sign_bit_copies (XEXP (cond, 0), mode)
-	           == GET_MODE_BITSIZE (mode))
-		  && (i = exact_log2 (- INTVAL (true_rtx))) >= 0)))
-	{
-	  *general_simplify = 0; 
-	  return x;
-	}
-    }
-
-  return x;
-}
-#endif
-
 /* Check whether insn is a candidate for a conditional.  */
 
 static cond_type

gcc/config/mcore/mcore.h

@@ -1379,10 +1379,6 @@ extern long mcore_current_compilation_timestamp;
 /* This is to handle loads from the constant pool.  */
 #define MACHINE_DEPENDENT_REORG(X) mcore_dependent_reorg (X)
 
-/* This handles MCore dependent rtl simplifications.  */
-#define MACHINE_DEPENDENT_SIMPLIFY(X,M,L,I,S) \
-  mcore_dependent_simplify_rtx (X, M, L, I, S)
-     
 #define PREDICATE_CODES							\
   { "mcore_arith_reg_operand",		{ REG, SUBREG }},		\
   { "mcore_general_movsrc_operand",	{ MEM, CONST_INT, REG, SUBREG }},\

gcc/config/mcore/mcore.md

@@ -1179,9 +1179,9 @@
     int low, high;
 
     if (TARGET_LITTLE_END)
-      low = 0, high = 1;
+      low = 0, high = 4;
     else
-      low = 1, high = 0;
+      low = 4, high = 0;
     
     emit_insn (gen_rtx_SET (VOIDmode, gen_rtx_SUBREG (SImode, operands[0], low),
 	      operands[1]));