[PATCH 03/18] remove TREE_CHAIN from *_CST nodes

[Nathan Froyd]

*_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.

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