gcc-8.3/gcc/make_node()

参照元†

• gcc-8.3/build_decl()
• gcc-8.3/gcc/expand_gimple_basic_block()
• gcc-8.3/gcc/make_vector_type()

説明†

• パス: gcc-8.3/gcc/tree.c

• FIXME: これは何？
  • 説明

引数†

• enum tree_code code MEM_STAT_DECL
  • gcc-8.3/gcc/tree_code

返り値†

• tree
  • gcc-8.3/gcc/tree

参考†

実装†

/* Return a newly allocated node of code CODE.  For decl and type
   nodes, some other fields are initialized.  The rest of the node is
   initialized to zero.  This function cannot be used for TREE_VEC,
   INTEGER_CST or OMP_CLAUSE nodes, which is enforced by asserts in
   tree_code_size.

   Achoo!  I got a code in the node.  */

tree
make_node (enum tree_code code MEM_STAT_DECL)
{
  tree t;
  enum tree_code_class type = TREE_CODE_CLASS (code);
  size_t length = tree_code_size (code);

• • gcc-8.3/gcc/tree
  • gcc-8.3/gcc/tree_code_class
  • gcc-8.3/gcc/TREE_CODE_CLASS()
  • gcc-8.3/gcc/tree_code_size()

  record_node_allocation_statistics (code, length);

  t = ggc_alloc_cleared_tree_node_stat (length PASS_MEM_STAT);
  TREE_SET_CODE (t, code);

• • gcc-8.3/gcc/record_node_allocation_statistics()
  • gcc-8.3/gcc/ggc_alloc_cleared_tree_node_stat()
  • gcc-8.3/gcc/TREE_SET_CODE()

  switch (type)
    {
    case tcc_statement:
      if (code != DEBUG_BEGIN_STMT)
	TREE_SIDE_EFFECTS (t) = 1;
      break;

• • gcc-8.3/gcc/TREE_SIDE_EFFECTS()

    case tcc_declaration:
      if (CODE_CONTAINS_STRUCT (code, TS_DECL_COMMON))
	{
	  if (code == FUNCTION_DECL)
	    {
	      SET_DECL_ALIGN (t, FUNCTION_ALIGNMENT (FUNCTION_BOUNDARY));
	      SET_DECL_MODE (t, FUNCTION_MODE);
	    }
	  else
	    SET_DECL_ALIGN (t, 1);
	}
      DECL_SOURCE_LOCATION (t) = input_location;
      if (TREE_CODE (t) == DEBUG_EXPR_DECL)
	DECL_UID (t) = --next_debug_decl_uid;
      else
	{
	  DECL_UID (t) = allocate_decl_uid ();
	  SET_DECL_PT_UID (t, -1);
	}
      if (TREE_CODE (t) == LABEL_DECL)
	LABEL_DECL_UID (t) = -1;

      break;

• • gcc-8.3/gcc/CODE_CONTAINS_STRUCT()
  • gcc-8.3/gcc/SET_DECL_ALIGN()
  • gcc-8.3/gcc/FUNCTION_ALIGNMENT()
  • gcc-8.3/gcc/SET_DECL_MODE()
  • gcc-8.3/gcc/DECL_SOURCE_LOCATION()
  • gcc-8.3/gcc/TREE_CODE()
  • gcc-8.3/gcc/DECL_UID()
  • gcc-8.3/gcc/allocate_decl_uid()
  • gcc-8.3/gcc/LABEL_DECL_UID()

    case tcc_type:
      TYPE_UID (t) = next_type_uid++;
      SET_TYPE_ALIGN (t, BITS_PER_UNIT);
      TYPE_USER_ALIGN (t) = 0;
      TYPE_MAIN_VARIANT (t) = t;
      TYPE_CANONICAL (t) = t;

      /* Default to no attributes for type, but let target change that.  */
      TYPE_ATTRIBUTES (t) = NULL_TREE;
      targetm.set_default_type_attributes (t);

      /* We have not yet computed the alias set for this type.  */
      TYPE_ALIAS_SET (t) = -1;
      break;

• • gcc-8.3/gcc/TYPE_UID()
  • gcc-8.3/gcc/SET_TYPE_ALIGN()
  • gcc-8.3/gcc/TYPE_USER_ALIGN()
  • gcc-8.3/gcc/TYPE_MAIN_VARIANT()
  • gcc-8.3/gcc/TYPE_CANONICAL()
  • gcc-8.3/gcc/TYPE_ATTRIBUTES()
  • gcc-8.3/gcc/targetm(global)
  • gcc-8.3/gcc/TYPE_ALIAS_SET()

    case tcc_constant:
      TREE_CONSTANT (t) = 1;
      break;

• • gcc-8.3/gcc/TREE_CONSTANT()

    case tcc_expression:
      switch (code)
	{
	case INIT_EXPR:
	case MODIFY_EXPR:
	case VA_ARG_EXPR:
	case PREDECREMENT_EXPR:
	case PREINCREMENT_EXPR:
	case POSTDECREMENT_EXPR:
	case POSTINCREMENT_EXPR:
	  /* All of these have side-effects, no matter what their
	     operands are.  */
	  TREE_SIDE_EFFECTS (t) = 1;
	  break;

	default:
	  break;
	}
      break;

• • gcc-8.3/gcc/TREE_SIDE_EFFECTS()

    case tcc_exceptional:
      switch (code)
        {
	case TARGET_OPTION_NODE:
	  TREE_TARGET_OPTION(t)
			    = ggc_cleared_alloc<struct cl_target_option> ();
	  break;

• • gcc-8.3/gcc/TREE_TARGET_OPTION()
  • gcc-8.3/gcc/ggc_cleared_alloc()

	case OPTIMIZATION_NODE:
	  TREE_OPTIMIZATION (t)
			    = ggc_cleared_alloc<struct cl_optimization> ();
	  break;

• • gcc-8.3/gcc/TREE_OPTIMIZATION()
  • gcc-8.3/gcc/ggc_cleared_alloc()

	default:
	  break;
	}
      break;

    default:
      /* Other classes need no special treatment.  */
      break;
    }

  return t;
}

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