that are variants made by type modifiers such as "const" and "volatile".
The TYPE_MAIN_VARIANT field, in any member of such a chain,
points to the start of the chain.
- The TYPE_NONCOPIED_PARTS field is a list specifying which parts
- of an object of this type should *not* be copied by assignment.
- The TREE_VALUE of each is a FIELD_DECL that should not be
- copied. The TREE_PURPOSE is an initial value for that field when
- an object of this type is initialized via an INIT_EXPR. It may
- be NULL if no special value is required. Even the things in this
- list are copied if the right-hand side of an assignment is known
- to be a complete object (rather than being, perhaps, a subobject
- of some other object.) The determination of what constitutes a
- complete object is done by fixed_type_p.
The TYPE_NAME field contains info on the name used in the program
for this type (for GDB symbol table output). It is either a
TYPE_DECL node, for types that are typedefs, or an IDENTIFIER_NODE
/* Contents are in TREE_INT_CST_LOW and TREE_INT_CST_HIGH fields,
32 bits each, giving us a 64 bit constant capability. INTEGER_CST
nodes can be shared, and therefore should be considered read only.
- They should be copied, before setting a flag such as
- TREE_OVERFLOW. If an INTEGER_CST has TREE_OVERFLOW or
- TREE_CONSTANT_OVERFLOW already set, it is known to be unique.
+ They should be copied, before setting a flag such as TREE_OVERFLOW.
+ If an INTEGER_CST has TREE_OVERFLOW already set, it is known to be unique.
INTEGER_CST nodes are created for the integral types, for pointer
types and for vector and float types in some circumstances. */
DEFTREECODE (INTEGER_CST, "integer_cst", tcc_constant, 0)
DEFTREECODE (TYPE_DECL, "type_decl", tcc_declaration, 0)
DEFTREECODE (RESULT_DECL, "result_decl", tcc_declaration, 0)
-/* Memory tags used in tree-ssa to represent memory locations in
- virtual SSA. */
-DEFTREECODE (NAME_MEMORY_TAG, "name_memory_tag", tcc_declaration, 0)
-DEFTREECODE (SYMBOL_MEMORY_TAG, "symbol_memory_tag", tcc_declaration, 0)
-DEFTREECODE (MEMORY_PARTITION_TAG, "memory_partition_tag", tcc_declaration, 0)
-
/* A namespace declaration. Namespaces appear in DECL_CONTEXT of other
_DECLs, providing a hierarchy of names. */
DEFTREECODE (NAMESPACE_DECL, "namespace_decl", tcc_declaration, 0)
\f
/* References to storage. */
+/* The ordering of the following codes is optimized for the classification
+ in handled_component_p. Keep them in a consecutive group. */
+
/* Value is structure or union component.
Operand 0 is the structure or union (an expression).
Operand 1 is the field (a node of type FIELD_DECL).
to its mode width. */
DEFTREECODE (BIT_FIELD_REF, "bit_field_ref", tcc_reference, 3)
+/* Used only on an operand of complex type, these return
+ a value of the corresponding component type. */
+DEFTREECODE (REALPART_EXPR, "realpart_expr", tcc_reference, 1)
+DEFTREECODE (IMAGPART_EXPR, "imagpart_expr", tcc_reference, 1)
+
+/* Array indexing.
+ Operand 0 is the array; operand 1 is a (single) array index.
+ Operand 2, if present, is a copy of TYPE_MIN_VALUE of the index.
+ Operand 3, if present, is the element size, measured in units of
+ the alignment of the element type. */
+DEFTREECODE (ARRAY_REF, "array_ref", tcc_reference, 4)
+
+/* Likewise, except that the result is a range ("slice") of the array. The
+ starting index of the resulting array is taken from operand 1 and the size
+ of the range is taken from the type of the expression. */
+DEFTREECODE (ARRAY_RANGE_REF, "array_range_ref", tcc_reference, 4)
+
/* The ordering of the following codes is optimized for the checking
macros in tree.h. Changing the order will degrade the speed of the
compiler. INDIRECT_REF, ALIGN_INDIRECT_REF, MISALIGNED_INDIRECT_REF. */
or 0 if the alignment is unknown. */
DEFTREECODE (MISALIGNED_INDIRECT_REF, "misaligned_indirect_ref", tcc_reference, 2)
-/* Array indexing.
- Operand 0 is the array; operand 1 is a (single) array index.
- Operand 2, if present, is a copy of TYPE_MIN_VALUE of the index.
- Operand 3, if present, is the element size, measured in units of
- the alignment of the element type. */
-DEFTREECODE (ARRAY_REF, "array_ref", tcc_reference, 4)
-
-/* Likewise, except that the result is a range ("slice") of the array. The
- starting index of the resulting array is taken from operand 1 and the size
- of the range is taken from the type of the expression. */
-DEFTREECODE (ARRAY_RANGE_REF, "array_range_ref", tcc_reference, 4)
-
/* Used to represent lookup of runtime type dependent data. Often this is
a reference to a vtable, but it needn't be. Operands are:
OBJ_TYPE_REF_EXPR: An expression that evaluates the value to use.
/* Complex conjugate of operand. Used only on complex types. */
DEFTREECODE (CONJ_EXPR, "conj_expr", tcc_unary, 1)
-/* Used only on an operand of complex type, these return
- a value of the corresponding component type. */
-DEFTREECODE (REALPART_EXPR, "realpart_expr", tcc_reference, 1)
-DEFTREECODE (IMAGPART_EXPR, "imagpart_expr", tcc_reference, 1)
-
/* Nodes for ++ and -- in C.
The second arg is how much to increment or decrement by.
For a pointer, it would be the size of the object pointed to. */
expanding. */
DEFTREECODE (EH_FILTER_EXPR, "eh_filter_expr", tcc_statement, 2)
-/* Indicates a change in the dynamic type of a memory location. This
- has no value and generates no executable code. It is only used for
- type based alias analysis. This is generated by C++ placement new.
- CHANGE_DYNAMIC_TYPE_NEW_TYPE, the first operand, is the new type.
- CHANGE_DYNAMIC_TYPE_LOCATION, the second operand, is the location
- whose type is being changed. */
-DEFTREECODE (CHANGE_DYNAMIC_TYPE_EXPR, "change_dynamic_type_expr",
- tcc_statement, 2)
-
/* Node used for describing a property that is known at compile
time. */
DEFTREECODE (SCEV_KNOWN, "scev_known", tcc_expression, 0)
sizetype or a pointer type (if SYMBOL is NULL).
The sixth argument is the reference to the original memory access, which
- is preserved for the purposes of the RTL alias analysis. The seventh
- argument is a tag representing results of the tree level alias analysis. */
+ is preserved for the purposes of the RTL alias analysis. */
-DEFTREECODE (TARGET_MEM_REF, "target_mem_ref", tcc_reference, 7)
+DEFTREECODE (TARGET_MEM_REF, "target_mem_ref", tcc_reference, 6)
/* The ordering of the codes between OMP_PARALLEL and OMP_CRITICAL is
exposed to TREE_RANGE_CHECK. */
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