[03/18] remove TREE_CHAIN from *_CST nodes

*_CST nodes don't need TREE_CHAIN.  Make them include typed_tree instead,
mark them as such in initialize_tree_contains_struct, and don't print out
their TREE_CHAIN.

-Nathan

gcc/
	* tree.h (struct tree_int_cst, struct real_value): Include typed_tree
	instead of tree_common.
	(struct tree_fixed_cst, struct tree_string, struct tree_complex):
	Likewise.
	* tree.c (initialize_tree_contains_struct): Mark such nodes as being
	TS_TYPED rather than TS_COMMON.
	* print-tree.c (print_node): Don't print TREE_CHAIN for constants.

On Fri, Mar 11, 2011 at 5:23 AM, Nathan Froyd <froydnj@codesourcery.com> wrote:
> *_CST nodes don't need TREE_CHAIN.  Make them include typed_tree instead,
> mark them as such in initialize_tree_contains_struct, and don't print out
> their TREE_CHAIN.

Ok for 4.7 if it bootstraps and tests for all languages.

Richard.

> -Nathan
>
> gcc/
>        * tree.h (struct tree_int_cst, struct real_value): Include typed_tree
>        instead of tree_common.
>        (struct tree_fixed_cst, struct tree_string, struct tree_complex):
>        Likewise.
>        * tree.c (initialize_tree_contains_struct): Mark such nodes as being
>        TS_TYPED rather than TS_COMMON.
>        * print-tree.c (print_node): Don't print TREE_CHAIN for constants.
>
> diff --git a/gcc/print-tree.c b/gcc/print-tree.c
> index b0c6899..3b5edeb 100644
> --- a/gcc/print-tree.c
> +++ b/gcc/print-tree.c
> @@ -853,11 +853,6 @@ print_node (FILE *file, const char *prefix, tree node, int indent)
>              }
>            fputc ('\"', file);
>          }
> -         /* Print the chain at second level.  */
> -         if (indent == 4)
> -           print_node (file, "chain", TREE_CHAIN (node), indent + 4);
> -         else
> -           print_node_brief (file, "chain", TREE_CHAIN (node), indent + 4);
>          break;
>
>        case IDENTIFIER_NODE:
> diff --git a/gcc/tree.c b/gcc/tree.c
> index 68f40c9..7d73c74 100644
> --- a/gcc/tree.c
> +++ b/gcc/tree.c
> @@ -370,15 +370,15 @@ initialize_tree_contains_struct (void)
>          break;
>
>        case TS_COMMON:
> -         MARK_TS_TYPED (code);
> -         break;
> -
>        case TS_INT_CST:
>        case TS_REAL_CST:
>        case TS_FIXED_CST:
>        case TS_VECTOR:
>        case TS_STRING:
>        case TS_COMPLEX:
> +         MARK_TS_TYPED (code);
> +         break;
> +
>        case TS_IDENTIFIER:
>        case TS_DECL_MINIMAL:
>        case TS_TYPE:
> diff --git a/gcc/tree.h b/gcc/tree.h
> index 4ad2d3e..11c2f83 100644
> --- a/gcc/tree.h
> +++ b/gcc/tree.h
> @@ -1456,7 +1456,7 @@ extern void omp_clause_range_check_failed (const_tree, const char *, int,
>        && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
>
>  struct GTY(()) tree_int_cst {
> -  struct tree_common common;
> +  struct typed_tree typed;
>   double_int int_cst;
>  };
>
> @@ -1469,7 +1469,7 @@ struct real_value;
>  #define TREE_REAL_CST(NODE) (*TREE_REAL_CST_PTR (NODE))
>
>  struct GTY(()) tree_real_cst {
> -  struct tree_common common;
> +  struct typed_tree typed;
>   struct real_value * real_cst_ptr;
>  };
>
> @@ -1481,7 +1481,7 @@ struct fixed_value;
>  #define TREE_FIXED_CST(NODE) (*TREE_FIXED_CST_PTR (NODE))
>
>  struct GTY(()) tree_fixed_cst {
> -  struct tree_common common;
> +  struct typed_tree typed;
>   struct fixed_value * fixed_cst_ptr;
>  };
>
> @@ -1491,7 +1491,7 @@ struct GTY(()) tree_fixed_cst {
>   ((const char *)(STRING_CST_CHECK (NODE)->string.str))
>
>  struct GTY(()) tree_string {
> -  struct tree_common common;
> +  struct typed_tree typed;
>   int length;
>   char str[1];
>  };
> @@ -1501,7 +1501,7 @@ struct GTY(()) tree_string {
>  #define TREE_IMAGPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.imag)
>
>  struct GTY(()) tree_complex {
> -  struct tree_common common;
> +  struct typed_tree typed;
>   tree real;
>   tree imag;
>  };
> @@ -1510,7 +1510,7 @@ struct GTY(()) tree_complex {
>  #define TREE_VECTOR_CST_ELTS(NODE) (VECTOR_CST_CHECK (NODE)->vector.elements)
>
>  struct GTY(()) tree_vector {
> -  struct tree_common common;
> +  struct typed_tree typed;
>   tree elements;
>  };
>
> --
> 1.7.0.4
>
>