alias.c (component_uses_parent_alias_set): Constify.

	* alias.c (component_uses_parent_alias_set): Constify.
	* alias.h (component_uses_parent_alias_set): Likewise.
	* cfgrtl.c (print_rtl_with_bb): Likewise.
	* double-int.c (tree_to_double_int, double_int_fits_to_tree_p,
	mpz_get_double_int): Likewise.
	* double-int.h (double_int_fits_to_tree_p, tree_to_double_int,
	mpz_get_double_int): Likewise.
	* expr.c (is_aligning_offset, undefined_operand_subword_p,
	mostly_zeros_p, all_zeros_p, safe_from_p, is_aligning_offset):
	Likewise.
	* expr.h (safe_from_p): Likewise.
	* gimple-low.c (try_catch_may_fallthru, block_may_fallthru):
	Likewise.
	* gimplify.c (should_carry_locus_p, zero_sized_field_decl,
	zero_sized_type, goa_lhs_expr_p): Likewise.
	* omp-low.c (is_variable_sized, use_pointer_for_field): Likewise.
	* rtl.h (print_rtl_with_bb): Likewise.
	* sched-vis.c (print_exp, print_value, print_pattern): Likewise.
	* tree-cfg.c (const_first_stmt, const_last_stmt): New.
	* tree-flow-inline.h (bb_stmt_list): Constify.
	(cbsi_start, cbsi_last, cbsi_end_p, cbsi_next, cbsi_prev,
	cbsi_stmt): New.
	* tree-flow.h (const_block_stmt_iterator, cbsi_start, cbsi_last,
	const_first_stmt, const_last_stmt): New.
	(block_may_fallthru, empty_block_p): Constify.
	* tree-iterator.c (EXPR_FIRST_BODY, EXPR_LAST_BODY,
	EXPR_ONLY_BODY): New.
	(expr_first, expr_last, expr_only): Use macro for body.
	(const_expr_first, const_expr_last, const_expr_only): New.
	* tree-iterator.h (const_tree_stmt_iterator, ctsi_start,
	ctsi_last, ctsi_end_p, ctsi_one_before_end_p, ctsi_next,
	ctsi_prev, ctsi_stmt): New.
	* tree-scalar-evolution.c (get_loop_exit_condition): Constify.
	* tree-scalar-evolution.h (get_loop_exit_condition): Likewise.
	* tree-ssa-loop-niter.c (loop_only_exit_p,
	derive_constant_upper_bound): Likewise.
	* tree-ssa-phiopt.c (empty_block_p): Likewise.
	* tree-ssa-threadupdate.c (redirection_block_p): Likewise.
	* tree-vectorizer.c (slpeel_can_duplicate_loop_p): Likewise.
	* tree-vectorizer.h (slpeel_can_duplicate_loop_p): Likewise.
	* tree-vrp.c (vrp_bitmap_equal_p): Likewise.
	* tree.c (get_type_static_bounds): Likewise.
	* tree.h (const_expr_first, const_expr_last, const_expr_only): New.
	(get_type_static_bounds): Constify.

From-SVN: r127483

1 files changed, 6 insertions, 6 deletions

diff --git a/gcc/expr.c b/gcc/expr.c
index 04a9663..dc6615a 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -146,7 +146,7 @@ static rtx store_field (rtx, HOST_WIDE_INT, HOST_WIDE_INT, enum machine_mode,
 
 static unsigned HOST_WIDE_INT highest_pow2_factor_for_target (const_tree, const_tree);
 
-static int is_aligning_offset (tree, tree);
+static int is_aligning_offset (const_tree, const_tree);
 static void expand_operands (tree, tree, rtx, rtx*, rtx*,
 			     enum expand_modifier);
 static rtx reduce_to_bit_field_precision (rtx, rtx, tree);
@@ -3141,7 +3141,7 @@ emit_move_ccmode (enum machine_mode mode, rtx x, rtx y)
    undefined bits of a paradoxical subreg.  */
 
 static bool
-undefined_operand_subword_p (rtx op, int i)
+undefined_operand_subword_p (const_rtx op, int i)
 {
   enum machine_mode innermode, innermostmode;
   int offset;
@@ -4908,7 +4908,7 @@ count_type_elements (const_tree type, bool allow_flexarr)
 /* Return 1 if EXP contains mostly (3/4)  zeros.  */
 
 static int
-mostly_zeros_p (tree exp)
+mostly_zeros_p (const_tree exp)
 {
   if (TREE_CODE (exp) == CONSTRUCTOR)
 
@@ -4931,7 +4931,7 @@ mostly_zeros_p (tree exp)
 /* Return 1 if EXP contains all zeros.  */
 
 static int
-all_zeros_p (tree exp)
+all_zeros_p (const_tree exp)
 {
   if (TREE_CODE (exp) == CONSTRUCTOR)
 
@@ -6243,7 +6243,7 @@ force_operand (rtx value, rtx target)
    searches for optimization opportunities.  */
 
 int
-safe_from_p (rtx x, tree exp, int top_p)
+safe_from_p (const_rtx x, tree exp, int top_p)
 {
   rtx exp_rtl = 0;
   int i, nops;
@@ -9215,7 +9215,7 @@ reduce_to_bit_field_precision (rtx exp, rtx target, tree type)
    aligned more than BIGGEST_ALIGNMENT.  */
 
 static int
-is_aligning_offset (tree offset, tree exp)
+is_aligning_offset (const_tree offset, const_tree exp)
 {
   /* Strip off any conversions.  */
   while (TREE_CODE (offset) == NON_LVALUE_EXPR