cse.c (fold_rtx): Make autoincrement addressing mode tests be runtime selectable.

        * cse.c (fold_rtx): Make autoincrement addressing mode tests be
        runtime selectable.
        * expr.c (move_by_pieces): Similarly.
        (move_by_pieces_1, clear_by_pieces, clear_by_pieces_1): Similarly.
        * flow.c (find_auto_inc): Similarly.
        (try_pre_increment): Similarly.
        * loop.c (strength_reduce): Similarly.
        * regclass.c (auto_inc_dec_reg_p): Similarly.
        * regmove.c (try_auto_increment): Similarly.
        (fixup_match_1): Similarly.
        * rtl.h (HAVE_PRE_INCREMENT): Define if not already defined.
        (HAVE_PRE_DECREMENT): Similarly.
        (HAVE_POST_INCREMENT, HAVE_POST_DECREMENT): Similarly.
        sponding changes to all target header files.

From-SVN: r23837

1 files changed, 12 insertions, 32 deletions

diff --git a/gcc/expr.c b/gcc/expr.c
index ca0aba1..534fac6 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -1442,40 +1442,32 @@ move_by_pieces (to, from, len, align)
   if (!(data.autinc_from && data.autinc_to)
       && move_by_pieces_ninsns (len, align) > 2)
     {
-#ifdef HAVE_PRE_DECREMENT
-      if (data.reverse && ! data.autinc_from)
+      if (HAVE_PRE_DECREMENT && data.reverse && ! data.autinc_from)
 	{
 	  data.from_addr = copy_addr_to_reg (plus_constant (from_addr, len));
 	  data.autinc_from = 1;
 	  data.explicit_inc_from = -1;
 	}
-#endif
-#ifdef HAVE_POST_INCREMENT
-      if (! data.autinc_from)
+      if (HAVE_POST_INCREMENT && ! data.autinc_from)
 	{
 	  data.from_addr = copy_addr_to_reg (from_addr);
 	  data.autinc_from = 1;
 	  data.explicit_inc_from = 1;
 	}
-#endif
       if (!data.autinc_from && CONSTANT_P (from_addr))
 	data.from_addr = copy_addr_to_reg (from_addr);
-#ifdef HAVE_PRE_DECREMENT
-      if (data.reverse && ! data.autinc_to)
+      if (HAVE_PRE_DECREMENT && data.reverse && ! data.autinc_to)
 	{
 	  data.to_addr = copy_addr_to_reg (plus_constant (to_addr, len));
 	  data.autinc_to = 1;
 	  data.explicit_inc_to = -1;
 	}
-#endif
-#ifdef HAVE_POST_INCREMENT
-      if (! data.reverse && ! data.autinc_to)
+      if (HAVE_POST_INCREMENT && ! data.reverse && ! data.autinc_to)
 	{
 	  data.to_addr = copy_addr_to_reg (to_addr);
 	  data.autinc_to = 1;
 	  data.explicit_inc_to = 1;
 	}
-#endif
       if (!data.autinc_to && CONSTANT_P (to_addr))
 	data.to_addr = copy_addr_to_reg (to_addr);
     }
@@ -1586,20 +1578,16 @@ move_by_pieces_1 (genfun, mode, data)
 						      data->offset))));
       MEM_IN_STRUCT_P (from1) = data->from_struct;
 
-#ifdef HAVE_PRE_DECREMENT
-      if (data->explicit_inc_to < 0)
+      if (HAVE_PRE_DECREMENT && data->explicit_inc_to < 0)
 	emit_insn (gen_add2_insn (data->to_addr, GEN_INT (-size)));
-      if (data->explicit_inc_from < 0)
+      if (HAVE_PRE_DECREMENT && data->explicit_inc_from < 0)
 	emit_insn (gen_add2_insn (data->from_addr, GEN_INT (-size)));
-#endif
 
       emit_insn ((*genfun) (to1, from1));
-#ifdef HAVE_POST_INCREMENT
-      if (data->explicit_inc_to > 0)
+      if (HAVE_POST_INCREMENT && data->explicit_inc_to > 0)
 	emit_insn (gen_add2_insn (data->to_addr, GEN_INT (size)));
-      if (data->explicit_inc_from > 0)
+      if (HAVE_POST_INCREMENT && data->explicit_inc_from > 0)
 	emit_insn (gen_add2_insn (data->from_addr, GEN_INT (size)));
-#endif
 
       if (! data->reverse) data->offset += size;
 
@@ -2267,22 +2255,18 @@ clear_by_pieces (to, len, align)
   if (!data.autinc_to
       && move_by_pieces_ninsns (len, align) > 2)
     {
-#ifdef HAVE_PRE_DECREMENT
-      if (data.reverse && ! data.autinc_to)
+      if (HAVE_PRE_DECREMENT && data.reverse && ! data.autinc_to)
 	{
 	  data.to_addr = copy_addr_to_reg (plus_constant (to_addr, len));
 	  data.autinc_to = 1;
 	  data.explicit_inc_to = -1;
 	}
-#endif
-#ifdef HAVE_POST_INCREMENT
-      if (! data.reverse && ! data.autinc_to)
+      if (HAVE_POST_INCREMENT && ! data.reverse && ! data.autinc_to)
 	{
 	  data.to_addr = copy_addr_to_reg (to_addr);
 	  data.autinc_to = 1;
 	  data.explicit_inc_to = 1;
 	}
-#endif
       if (!data.autinc_to && CONSTANT_P (to_addr))
 	data.to_addr = copy_addr_to_reg (to_addr);
     }
@@ -2345,16 +2329,12 @@ clear_by_pieces_1 (genfun, mode, data)
 							data->offset))));
       MEM_IN_STRUCT_P (to1) = data->to_struct;
 
-#ifdef HAVE_PRE_DECREMENT
-      if (data->explicit_inc_to < 0)
+      if (HAVE_PRE_DECREMENT && data->explicit_inc_to < 0)
 	emit_insn (gen_add2_insn (data->to_addr, GEN_INT (-size)));
-#endif
 
       emit_insn ((*genfun) (to1, const0_rtx));
-#ifdef HAVE_POST_INCREMENT
-      if (data->explicit_inc_to > 0)
+      if (HAVE_POST_INCREMENT && data->explicit_inc_to > 0)
 	emit_insn (gen_add2_insn (data->to_addr, GEN_INT (size)));
-#endif
 
       if (! data->reverse) data->offset += size;