From 38b3627d6fcedf4e1b99e988440c1c366f6dba10 Mon Sep 17 00:00:00 2001 From: Nathan Sidwell Date: Tue, 21 Dec 2004 17:43:27 +0000 Subject: system.c (IN_RANGE): Use plain unsigned, not unsigned HOST_WIDE_INT. * system.c (IN_RANGE): Use plain unsigned, not unsigned HOST_WIDE_INT. * tree.def (VOID_TYPE, INTEGER_TYPE, REAL_TYPE, COMPLEX_TYPE, VECTOR_TYPE, OFFSET_TYPE, ENUMERAL_TYPE, BOOLEAN_TYPE, CHAR_TYPE, POINTER_TYPE, REFERENCE_TYPE, METHOD_TYPE, FUNCTION_TYPE, FILE_TYPE, ARRAY_TYPE, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE): Reorder for better code efficiency. (CONST_DECL, TYPE_DECL, VAR_DECL, FIELD_DECL, PARM_DECL): Likewise. (INDIRECT_REF, ALIGN_INDIRECT_REF, MISALIGNED_INDIRECT_REF): Likewise. * tree.h (INDIRECT_REF_P): Reorder checks for better optimization. (IS_EXPR_CODE_CLASS): Use IN_RANGE. (INTEGRAL_TYPE_P, FLOAT_TYPE_P): Reorder checks for better optimization. * cp/cp-tree.def (TEMPLATE_TYPE_PARM, BOUND_TEMPLATE_TEMPLATE_PARM, TYPE_OF_TYPE, TYPENAME_TYPE): Reorder for better code efficiency. * cp/cp-tree.h (CLASS_TYPE_P): Short circuit IS_AGGR_TYPE check. (CAN_HAVE_FULL_LANG_DECL_P): Reorder for better optimization. (INTEGRAL_CODE_P, CP_INTEGRAL_TYPE_P, INTEGRAL_OR_ENUMERATION_TYPE_P, SCALAR_TYPE_P, CP_AGGREGATE_TYPE_P, TYPE_PTROB_P, TYPE_REF_OBJ_P, TYPE_PTROBV_P): Likewise. From-SVN: r92463 --- gcc/tree.def | 129 +++++++++++++++++++++++++++++++++++++---------------------- 1 file changed, 82 insertions(+), 47 deletions(-) (limited to 'gcc/tree.def') diff --git a/gcc/tree.def b/gcc/tree.def index 3fc39e5..b69dfcc 100644 --- a/gcc/tree.def +++ b/gcc/tree.def @@ -28,7 +28,12 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA different structures, and the size is determined by the tree_union member structure; the 4th element should be zero. Languages that define language-specific tcc_exceptional or tcc_constant codes must - define the tree_size langhook to say how big they are. */ + define the tree_size langhook to say how big they are. + + These tree codes have been sorted so that the macros in tree.h that + check for various tree codes are optimized into range checks. This + gives a measureable performance improvement. When adding a new + code, consider its placement in relation to the other codes. */ /* Any erroneous construct is parsed into a node of this type. This type of node is accepted without complaint in all contexts @@ -118,31 +123,16 @@ DEFTREECODE (BLOCK, "block", tcc_exceptional, 0) ENUMERAL_TYPE, RECORD_TYPE, UNION_TYPE, and QUAL_UNION_TYPE nodes; see below. */ -DEFTREECODE (VOID_TYPE, "void_type", tcc_type, 0) - /* The void type in C */ - -/* Integer types in all languages, including char in C. - Also used for sub-ranges of other discrete types. - Has components TYPE_MIN_VALUE, TYPE_MAX_VALUE (expressions, inclusive) - and TYPE_PRECISION (number of bits used by this type). - In the case of a subrange type in Pascal, the TREE_TYPE - of this will point at the supertype (another INTEGER_TYPE, - or an ENUMERAL_TYPE, CHAR_TYPE, or BOOLEAN_TYPE). - Otherwise, the TREE_TYPE is zero. */ -DEFTREECODE (INTEGER_TYPE, "integer_type", tcc_type, 0) - -/* C's float and double. Different floating types are distinguished - by machine mode and by the TYPE_SIZE and the TYPE_PRECISION. */ -DEFTREECODE (REAL_TYPE, "real_type", tcc_type, 0) - -/* Complex number types. The TREE_TYPE field is the data type - of the real and imaginary parts. */ -DEFTREECODE (COMPLEX_TYPE, "complex_type", tcc_type, 0) - -/* Vector types. The TREE_TYPE field is the data type of the vector - elements. The TYPE_PRECISION field is the number of subparts of - the vector. */ -DEFTREECODE (VECTOR_TYPE, "vector_type", tcc_type, 0) +/* 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. OFFSET_TYPE, ENUMERAL_TYPE, BOOLEAN_TYPE, CHAR_TYPE, + INTEGER_TYPE, REAL_TYPE, POINTER_TYPE. */ + +/* An offset is a pointer relative to an object. + The TREE_TYPE field is the type of the object at the offset. + The TYPE_OFFSET_BASETYPE points to the node for the type of object + that the offset is relative to. */ +DEFTREECODE (OFFSET_TYPE, "offset_type", tcc_type, 0) /* C enums. The type node looks just like an INTEGER_TYPE node. The symbols for the values of the enum type are defined by @@ -157,38 +147,58 @@ DEFTREECODE (VECTOR_TYPE, "vector_type", tcc_type, 0) treated similarly. */ DEFTREECODE (ENUMERAL_TYPE, "enumeral_type", tcc_type, 0) -/* Pascal's boolean type (true or false are the only values); - no special fields needed. */ +/* Boolean type (true or false are the only values). Looks like an + INTEGRAL_TYPE. */ DEFTREECODE (BOOLEAN_TYPE, "boolean_type", tcc_type, 0) -/* CHAR in Pascal; not used in C. - No special fields needed. */ +/* CHAR in Java; not used in C. Looks like an INTEGRAL_TYPE. */ DEFTREECODE (CHAR_TYPE, "char_type", tcc_type, 0) +/* Integer types in all languages, including char in C. + Also used for sub-ranges of other discrete types. + Has components TYPE_MIN_VALUE, TYPE_MAX_VALUE (expressions, inclusive) + and TYPE_PRECISION (number of bits used by this type). + In the case of a subrange type in Pascal, the TREE_TYPE + of this will point at the supertype (another INTEGER_TYPE, + or an ENUMERAL_TYPE, CHAR_TYPE, or BOOLEAN_TYPE). + Otherwise, the TREE_TYPE is zero. */ +DEFTREECODE (INTEGER_TYPE, "integer_type", tcc_type, 0) + +/* C's float and double. Different floating types are distinguished + by machine mode and by the TYPE_SIZE and the TYPE_PRECISION. */ +DEFTREECODE (REAL_TYPE, "real_type", tcc_type, 0) + +/* 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. POINTER_TYPE, REFERENCE_TYPE. Note that this range + overlaps the previous range of ordered types. */ + /* All pointer-to-x types have code POINTER_TYPE. The TREE_TYPE points to the node for the type pointed to. */ DEFTREECODE (POINTER_TYPE, "pointer_type", tcc_type, 0) -/* An offset is a pointer relative to an object. - The TREE_TYPE field is the type of the object at the offset. - The TYPE_OFFSET_BASETYPE points to the node for the type of object - that the offset is relative to. */ -DEFTREECODE (OFFSET_TYPE, "offset_type", tcc_type, 0) - /* A reference is like a pointer except that it is coerced automatically to the value it points to. Used in C++. */ DEFTREECODE (REFERENCE_TYPE, "reference_type", tcc_type, 0) -/* METHOD_TYPE is the type of a function which takes an extra first - argument for "self", which is not present in the declared argument list. - The TREE_TYPE is the return type of the method. The TYPE_METHOD_BASETYPE - is the type of "self". TYPE_ARG_TYPES is the real argument list, which - includes the hidden argument for "self". */ -DEFTREECODE (METHOD_TYPE, "method_type", tcc_type, 0) +/* 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. COMPLEX_TYPE, VECTOR_TYPE, ARRAY_TYPE. */ + +/* Complex number types. The TREE_TYPE field is the data type + of the real and imaginary parts. */ +DEFTREECODE (COMPLEX_TYPE, "complex_type", tcc_type, 0) -/* Used for Pascal; details not determined right now. */ -DEFTREECODE (FILE_TYPE, "file_type", tcc_type, 0) +/* Vector types. The TREE_TYPE field is the data type of the vector + elements. The TYPE_PRECISION field is the number of subparts of + the vector. */ +DEFTREECODE (VECTOR_TYPE, "vector_type", tcc_type, 0) +/* 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. ARRAY_TYPE, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE. + Note that this range overlaps the previous range. */ + /* Types of arrays. Special fields: TREE_TYPE Type of an array element. TYPE_DOMAIN Type to index by. @@ -222,6 +232,13 @@ DEFTREECODE (UNION_TYPE, "union_type", tcc_type, 0) /* C union type */ the union. */ DEFTREECODE (QUAL_UNION_TYPE, "qual_union_type", tcc_type, 0) +/* 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. VOID_TYPE, FUNCTION_TYPE, METHOD_TYPE. */ + +/* The void type in C */ +DEFTREECODE (VOID_TYPE, "void_type", tcc_type, 0) + /* Type of functions. Special fields: TREE_TYPE type of value returned. TYPE_ARG_TYPES list of types of arguments expected. @@ -230,6 +247,16 @@ DEFTREECODE (QUAL_UNION_TYPE, "qual_union_type", tcc_type, 0) have code FUNCTION_TYPE also, but then TREE_TYPE is zero or void type. */ DEFTREECODE (FUNCTION_TYPE, "function_type", tcc_type, 0) +/* METHOD_TYPE is the type of a function which takes an extra first + argument for "self", which is not present in the declared argument list. + The TREE_TYPE is the return type of the method. The TYPE_METHOD_BASETYPE + is the type of "self". TYPE_ARG_TYPES is the real argument list, which + includes the hidden argument for "self". */ +DEFTREECODE (METHOD_TYPE, "method_type", tcc_type, 0) + +/* Used for Pascal; details not determined right now. */ +DEFTREECODE (FILE_TYPE, "file_type", tcc_type, 0) + /* This is a language-specific kind of type. Its meaning is defined by the language front end. layout_type does not know how to lay this out, @@ -323,12 +350,16 @@ DEFTREECODE (STRING_CST, "string_cst", tcc_constant, 0) DEFTREECODE (FUNCTION_DECL, "function_decl", tcc_declaration, 0) DEFTREECODE (LABEL_DECL, "label_decl", tcc_declaration, 0) -DEFTREECODE (CONST_DECL, "const_decl", tcc_declaration, 0) -DEFTREECODE (TYPE_DECL, "type_decl", tcc_declaration, 0) +/* 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. FIELD_DECL, VAR_DECL, CONST_DECL, PARM_DECL, + TYPE_DECL. */ +DEFTREECODE (FIELD_DECL, "field_decl", tcc_declaration, 0) DEFTREECODE (VAR_DECL, "var_decl", tcc_declaration, 0) +DEFTREECODE (CONST_DECL, "const_decl", tcc_declaration, 0) DEFTREECODE (PARM_DECL, "parm_decl", tcc_declaration, 0) +DEFTREECODE (TYPE_DECL, "type_decl", tcc_declaration, 0) DEFTREECODE (RESULT_DECL, "result_decl", tcc_declaration, 0) -DEFTREECODE (FIELD_DECL, "field_decl", tcc_declaration, 0) /* A namespace declaration. Namespaces appear in DECL_CONTEXT of other _DECLs, providing a hierarchy of names. */ @@ -357,6 +388,10 @@ DEFTREECODE (COMPONENT_REF, "component_ref", tcc_reference, 3) BIT_FIELD_REF_UNSIGNED says which. */ DEFTREECODE (BIT_FIELD_REF, "bit_field_ref", tcc_reference, 3) +/* 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. */ + /* C unary `*' or Pascal `^'. One operand, an expression for a pointer. */ DEFTREECODE (INDIRECT_REF, "indirect_ref", tcc_reference, 1) -- cgit v1.1