m68hc11.c (expand_prologue): Use push/pop to allocate 4-bytes of locals on 68HC11.

	* config/m68hc11/m68hc11.c (expand_prologue): Use push/pop to
	allocate 4-bytes of locals on 68HC11.
	(expand_epilogue): Likewise.
	(m68hc11_memory_move_cost): Increase cost of HI/QI soft registers.

From-SVN: r61364

gcc/ChangeLog

+2003-01-16  Stephane Carrez  <stcarrez@nerim.fr>
+
+	* config/m68hc11/m68hc11.c (expand_prologue): Use push/pop to 
+	allocate 4-bytes of locals on 68HC11.
+	(expand_epilogue): Likewise.
+	(m68hc11_memory_move_cost): Increase cost of HI/QI soft registers.
+
 2003-01-15  Stephane Carrez  <stcarrez@nerim.fr>
 
 	* config/m68hc11/m68hc11.h (ASM_SPEC): Handle -m68hcs12; Pass -mshort

gcc/config/m68hc11/m68hc11.c

@@ -1657,7 +1657,7 @@ expand_prologue ()
       emit_insn (gen_addhi3 (stack_pointer_rtx,
 			     stack_pointer_rtx, GEN_INT (-size)));
     }
-  else if (size > 8)
+  else if ((!optimize_size && size > 8) || (optimize_size && size > 10))
     {
       rtx insn;
 
@@ -1745,7 +1745,7 @@ expand_epilogue ()
       emit_insn (gen_addhi3 (stack_pointer_rtx,
 			     stack_pointer_rtx, GEN_INT (size)));
     }
-  else if (size > 8)
+  else if ((!optimize_size && size > 8) || (optimize_size && size > 10))
     {
       rtx insn;
 
@@ -5177,7 +5177,7 @@ m68hc11_memory_move_cost (mode, class, in)
   else
     {
       if (GET_MODE_SIZE (mode) <= 2)
-	return COSTS_N_INSNS (2);
+	return COSTS_N_INSNS (3);
       else
 	return COSTS_N_INSNS (4);
     }