c-lex.c (c_lex_with_flags, lex_string): Constify.

	* c-lex.c (c_lex_with_flags, lex_string): Constify.
	* c-ppoutput.c (print_line, pp_dir_change): Likewise.
	* c-typeck.c (free_all_tagged_tu_seen_up_to): Likewise.
	* cfg.c (bb_copy_original_hash, bb_copy_original_eq): Likewise.
	* cfgloop.c (loop_exit_hash, loop_exit_eq): Likewise.
	* ddg.c (compare_sccs): Likewise.
	* df-scan.c (df_ref_compare, df_mw_compare): Likewise.
	* dfp.c (decimal_real_from_string, decimal_to_decnumber,
	decimal_to_binary, decimal_do_compare, decimal_real_to_decimal,
	decimal_do_fix_trunc, decimal_real_to_integer,
	decimal_real_to_integer2, decimal_real_maxval): Likewise.
	* dse.c (const_group_info_t): New.
	(invariant_group_base_eq, invariant_group_base_hash): Constify.
	* dwarf2out.c (const_dw_die_ref): New.
	(decl_die_table_hash, decl_die_table_eq, file_info_cmp): Constify.
	* tree-browser.c (TB_parent_eq): Likewise.
	* unwind-dw2-fde.c (__register_frame_info_bases,
	__deregister_frame_info_bases, fde_unencoded_compare, fde_split,
	add_fdes, linear_search_fdes, binary_search_unencoded_fdes):
	Likewise.
	* unwind-dw2-fde.h (get_cie, next_fde): Likewise.
	* unwind-dw2.c (uw_frame_state_for): Likewise.
	* value-prof.c (histogram_hash, histogram_eq): Likewise.
	* value-prof.h (const_histogram_value): New.

From-SVN: r126920

1 files changed, 13 insertions, 16 deletions

diff --git a/gcc/unwind-dw2-fde.c b/gcc/unwind-dw2-fde.c
index 880ba51..d5dcad7 100644
--- a/gcc/unwind-dw2-fde.c
+++ b/gcc/unwind-dw2-fde.c
@@ -79,7 +79,7 @@ __register_frame_info_bases (const void *begin, struct object *ob,
 			     void *tbase, void *dbase)
 {
   /* If .eh_frame is empty, don't register at all.  */
-  if ((uword *) begin == 0 || *(uword *) begin == 0)
+  if ((const uword *) begin == 0 || *(const uword *) begin == 0)
     return;
 
   ob->pc_begin = (void *)-1;
@@ -177,7 +177,7 @@ __deregister_frame_info_bases (const void *begin)
   struct object *ob = 0;
 
   /* If .eh_frame is empty, we haven't registered.  */
-  if ((uword *) begin == 0 || *(uword *) begin == 0)
+  if ((const uword *) begin == 0 || *(const uword *) begin == 0)
     return ob;
 
   init_object_mutex_once ();
@@ -323,8 +323,8 @@ static int
 fde_unencoded_compare (struct object *ob __attribute__((unused)),
 		       const fde *x, const fde *y)
 {
-  _Unwind_Ptr x_ptr = *(_Unwind_Ptr *) x->pc_begin;
-  _Unwind_Ptr y_ptr = *(_Unwind_Ptr *) y->pc_begin;
+  const _Unwind_Ptr x_ptr = *(const _Unwind_Ptr *) x->pc_begin;
+  const _Unwind_Ptr y_ptr = *(const _Unwind_Ptr *) y->pc_begin;
 
   if (x_ptr > y_ptr)
     return 1;
@@ -434,7 +434,7 @@ fde_split (struct object *ob, fde_compare_t fde_compare,
 {
   static const fde *marker;
   size_t count = linear->count;
-  const fde **chain_end = ▮
+  const fde *const *chain_end = ▮
   size_t i, j, k;
 
   /* This should optimize out, but it is wise to make sure this assumption
@@ -444,13 +444,13 @@ fde_split (struct object *ob, fde_compare_t fde_compare,
 
   for (i = 0; i < count; i++)
     {
-      const fde **probe;
+      const fde *const *probe;
 
       for (probe = chain_end;
 	   probe != &marker && fde_compare (ob, linear->array[i], *probe) < 0;
 	   probe = chain_end)
 	{
-	  chain_end = (const fde **) erratic->array[probe - linear->array];
+	  chain_end = (const fde *const*) erratic->array[probe - linear->array];
 	  erratic->array[probe - linear->array] = NULL;
 	}
       erratic->array[i] = (const fde *) chain_end;
@@ -679,7 +679,7 @@ add_fdes (struct object *ob, struct fde_accumulator *accu, const fde *this_fde)
 
       if (encoding == DW_EH_PE_absptr)
 	{
-	  if (*(_Unwind_Ptr *) this_fde->pc_begin == 0)
+	  if (*(const _Unwind_Ptr *) this_fde->pc_begin == 0)
 	    continue;
 	}
       else
@@ -797,8 +797,8 @@ linear_search_fdes (struct object *ob, const fde *this_fde, void *pc)
 
       if (encoding == DW_EH_PE_absptr)
 	{
-	  pc_begin = ((_Unwind_Ptr *) this_fde->pc_begin)[0];
-	  pc_range = ((_Unwind_Ptr *) this_fde->pc_begin)[1];
+	  pc_begin = ((const _Unwind_Ptr *) this_fde->pc_begin)[0];
+	  pc_range = ((const _Unwind_Ptr *) this_fde->pc_begin)[1];
 	  if (pc_begin == 0)
 	    continue;
 	}
@@ -844,12 +844,9 @@ binary_search_unencoded_fdes (struct object *ob, void *pc)
   for (lo = 0, hi = vec->count; lo < hi; )
     {
       size_t i = (lo + hi) / 2;
-      const fde *f = vec->array[i];
-      void *pc_begin;
-      uaddr pc_range;
-
-      pc_begin = ((void **) f->pc_begin)[0];
-      pc_range = ((uaddr *) f->pc_begin)[1];
+      const fde *const f = vec->array[i];
+      const void *pc_begin = ((const void *const*) f->pc_begin)[0];
+      const uaddr pc_range = ((const uaddr *) f->pc_begin)[1];
 
       if (pc < pc_begin)
 	hi = i;