attribs.c (hash_attr, [...]): Constify.

	* attribs.c (hash_attr, eq_attr, init_attributes): Constify.
	* builtins.c (validate_arg, builtin_mathfn_code,
	validate_arglist): Likewise.
	* calls.c (call_expr_flags): Likewise.
	* combine.c (reg_nonzero_bits_for_combine,
	reg_num_sign_bit_copies_for_combine, get_last_value,
	reg_truncated_to_mode): Likewise.
	* emit-rtl.c (subreg_lowpart_p): Likewise.
	* expr.c (highest_pow2_factor_for_target,
	categorize_ctor_elements_1, categorize_ctor_elements,
	count_type_elements, contains_packed_reference,
	highest_pow2_factor, highest_pow2_factor_for_target): Likewise.
	* fold-const.c (may_negate_without_overflow_p, int_const_binop,
	fold_convertible_p, operand_equal_p, tree_swap_operands_p,
	native_encode_int, native_encode_real, native_encode_complex,
	native_encode_vector, native_encode_expr, native_interpret_int,
	native_interpret_real, native_interpret_complex,
	native_interpret_vector, native_interpret_expr): Likewise.
	* function.c (use_register_for_decl): Likewise.
	* gimplify.c (get_name): Likewise.
	* langhooks-def.h (lhd_return_null_const_tree): New.
	(LANG_HOOKS_GET_CALLEE_FNDECL): Use it.
	* langhooks.c (lhd_return_null_const_tree): New.
	* langhooks.h (lang_get_callee_fndecl): Constify.
	* output.h (constructor_static_from_elts_p): Likewise.
	* rtl-factoring.c (gen_symbol_ref_rtx_for_label): Likewise.
	* rtl.h (nonzero_bits, num_sign_bit_copies, truncated_to_mode,
	subreg_lowpart_p, noop_move_p, struct rtl_hooks): Likewise.
	* rtlanal.c (cached_nonzero_bits, nonzero_bits1,
	cached_num_sign_bit_copies, num_sign_bit_copies1, noop_move_p,
	nonzero_bits, num_sign_bit_copies, truncated_to_mode): Likewise.
	* rtlhooks-def.h (reg_nonzero_bits_general,
	reg_num_sign_bit_copies_general, reg_truncated_to_mode_general):
	Likewise. 
	* rtlhooks.c (reg_num_sign_bit_copies_general,
	reg_nonzero_bits_general, reg_truncated_to_mode_general):
	Likewise. 
	* stmt.c (warn_if_unused_value, is_body_block): Likewise.
	* stor-layout.c (mode_for_size_tree): Likewise.
	* tree-ssa-loop-im.c (memref_eq): Likewise.
	* tree-ssa-loop-ivopts.c (tree_int_cst_sign_bit): Likewise.
	* tree.c (contains_placeholder_p, type_list_equal,
	simple_cst_equal, get_callee_fndecl, operand_equal_for_phi_arg_p):
	Likewise. 
	* tree.h (tree_int_cst_sign_bit, may_negate_without_overflow_p,
	mode_for_size_tree, categorize_ctor_elements, count_type_elements,
	contains_placeholder_p, contains_packed_reference,
	get_callee_fndecl, operand_equal_for_phi_arg_p,
	warn_if_unused_value, is_body_block, native_encode_expr,
	native_interpret_expr, fold_convertible_p, operand_equal_p,
	int_const_binop, tree_swap_operands_p, builtin_mathfn_code,
	validate_arglist, simple_cst_equal, type_list_equal,
	use_register_for_decl, call_expr_flags, get_name,
	highest_pow2_factor): Likewise.
	(const_call_expr_arg_iterator_d,
	init_const_call_expr_arg_iterator, next_const_call_expr_arg,
	first_const_call_expr_arg, more_const_call_expr_args_p,
	FOR_EACH_CONST_CALL_EXPR_ARG): New.
	* varasm.c (constructor_static_from_elts_p): Constify.
	
cp:
	* parser.c (eof_token): Un-constify.
	(cp_lexer_new_main, cp_lexer_new_from_tokens, VEC_alloc,
	cp_lexer_consume_token, cp_lexer_purge_token): Remove spurious
	casts.

java:
	* lang.c (java_get_callee_fndecl): Constify.

objc:
	* objc-act.c (objc_get_callee_fndecl): Constify.
	* objc-act.h (objc_get_callee_fndecl): Likewise.

From-SVN: r127036

1 files changed, 16 insertions, 16 deletions

diff --git a/gcc/tree.c b/gcc/tree.c
index cd6bf36..f45f71b 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -2213,7 +2213,7 @@ tree_node_structure (const_tree t)
    or offset that depends on a field within a record.  */
 
 bool
-contains_placeholder_p (tree exp)
+contains_placeholder_p (const_tree exp)
 {
   enum tree_code code;
 
@@ -2274,9 +2274,9 @@ contains_placeholder_p (tree exp)
 	{
 	case CALL_EXPR:
 	  {
-	    tree arg;
-	    call_expr_arg_iterator iter;
-	    FOR_EACH_CALL_EXPR_ARG (arg, iter, exp)
+	    const_tree arg;
+	    const_call_expr_arg_iterator iter;
+	    FOR_EACH_CONST_CALL_EXPR_ARG (arg, iter, exp)
 	      if (CONTAINS_PLACEHOLDER_P (arg))
 		return 1;
 	    return 0;
@@ -4787,9 +4787,9 @@ attribute_list_contained (tree l1, tree l2)
    Also, the TREE_PURPOSEs must match.  */
 
 int
-type_list_equal (tree l1, tree l2)
+type_list_equal (const_tree l1, const_tree l2)
 {
-  tree t1, t2;
+  const_tree t1, t2;
 
   for (t1 = l1, t2 = l2; t1 && t2; t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2))
     if (TREE_VALUE (t1) != TREE_VALUE (t2)
@@ -4972,7 +4972,7 @@ simple_cst_list_equal (const_tree l1, const_tree l2)
    this function.  */
 
 int
-simple_cst_equal (tree t1, tree t2)
+simple_cst_equal (const_tree t1, const_tree t2)
 {
   enum tree_code code1, code2;
   int cmp;
@@ -5043,13 +5043,13 @@ simple_cst_equal (tree t1, tree t2)
       if (call_expr_nargs (t1) != call_expr_nargs (t2))
 	return 0;
       {
-	tree arg1, arg2;
-	call_expr_arg_iterator iter1, iter2;
-	for (arg1 = first_call_expr_arg (t1, &iter1),
-	       arg2 = first_call_expr_arg (t2, &iter2);
+	const_tree arg1, arg2;
+	const_call_expr_arg_iterator iter1, iter2;
+	for (arg1 = first_const_call_expr_arg (t1, &iter1),
+	       arg2 = first_const_call_expr_arg (t2, &iter2);
 	     arg1 && arg2;
-	     arg1 = next_call_expr_arg (&iter1),
-	       arg2 = next_call_expr_arg (&iter2))
+	     arg1 = next_const_call_expr_arg (&iter1),
+	       arg2 = next_const_call_expr_arg (&iter2))
 	  {
 	    cmp = simple_cst_equal (arg1, arg2);
 	    if (cmp <= 0)
@@ -6509,12 +6509,12 @@ decl_type_context (const_tree decl)
    determined.  */
 
 tree
-get_callee_fndecl (tree call)
+get_callee_fndecl (const_tree call)
 {
   tree addr;
 
   if (call == error_mark_node)
-    return call;
+    return error_mark_node;
 
   /* It's invalid to call this function with anything but a
      CALL_EXPR.  */
@@ -8010,7 +8010,7 @@ lower_bound_in_type (tree outer, tree inner)
    and get the same result, only slower.  */
 
 int
-operand_equal_for_phi_arg_p (tree arg0, tree arg1)
+operand_equal_for_phi_arg_p (const_tree arg0, const_tree arg1)
 {
   if (arg0 == arg1)
     return 1;