/* This file contains the definitions and documentation for the
tree codes used in GCC.
Copyright (C) 1987, 1988, 1993, 1995, 1997, 1998, 2000, 2001, 2004, 2005,
- 2006 Free Software Foundation, Inc.
+ 2006, 2007 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* For tcc_references, tcc_expression, tcc_comparison, tcc_unary,
The TREE_TYPE points to the node for the type pointed to. */
DEFTREECODE (POINTER_TYPE, "pointer_type", tcc_type, 0)
+/* _Fract and _Accum types in Embedded-C. Different fixed-point types
+ are distinguished by machine mode and by the TYPE_SIZE and the
+ TYPE_PRECISION. */
+DEFTREECODE (FIXED_POINT_TYPE, "fixed_point_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)
/* Contents are in TREE_REAL_CST field. */
DEFTREECODE (REAL_CST, "real_cst", tcc_constant, 0)
+/* Contents are in TREE_FIXED_CST field. */
+DEFTREECODE (FIXED_CST, "fixed_cst", tcc_constant, 0)
+
/* Contents are in TREE_REALPART and TREE_IMAGPART fields,
whose contents are other constant nodes. */
DEFTREECODE (COMPLEX_CST, "complex_cst", tcc_constant, 0)
DEFTREECODE (STRUCT_FIELD_TAG, "struct_field_tag", tcc_declaration, 0)
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. */
Operand 0 may be of any type.
Operand 1 must have the same type as the entire expression, unless
it unconditionally throws an exception, in which case it should
- have VOID_TYPE. The same constraints apply to operand 2. */
+ have VOID_TYPE. The same constraints apply to operand 2. The
+ condition in operand 0 must be of integral type. */
DEFTREECODE (COND_EXPR, "cond_expr", tcc_expression, 3)
/* Vector conditional expression. It is like COND_EXPR, but with
nodes for the function. */
DEFTREECODE (BIND_EXPR, "bind_expr", tcc_expression, 3)
-/* Function call. Operand 0 is the function.
- Operand 1 is the argument list, a list of expressions
- made out of a chain of TREE_LIST nodes.
- Operand 2 is the static chain argument, or NULL. */
-DEFTREECODE (CALL_EXPR, "call_expr", tcc_expression, 3)
+/* Function call. CALL_EXPRs are represented by variably-sized expression
+ nodes. There are at least three fixed operands. Operand 0 is an
+ INTEGER_CST node containing the total operand count, the number of
+ arguments plus 3. Operand 1 is the function, while operand 2 is
+ is static chain argument, or NULL. The remaining operands are the
+ arguments to the call. */
+DEFTREECODE (CALL_EXPR, "call_expr", tcc_vl_exp, 3)
/* Specify a value to compute along with its corresponding cleanup.
Operand 0 is the cleanup expression.
DEFTREECODE (MINUS_EXPR, "minus_expr", tcc_binary, 2)
DEFTREECODE (MULT_EXPR, "mult_expr", tcc_binary, 2)
+/* Pointer addition. The first operand is always a pointer and the
+ second operand is an integer of type sizetype. */
+DEFTREECODE (POINTER_PLUS_EXPR, "pointer_plus_expr", tcc_binary, 2)
+
/* Division for integer result that rounds the quotient toward zero. */
DEFTREECODE (TRUNC_DIV_EXPR, "trunc_div_expr", tcc_binary, 2)
Used for pointer subtraction in C. */
DEFTREECODE (EXACT_DIV_EXPR, "exact_div_expr", tcc_binary, 2)
-/* Conversion of real to fixed point: four ways to round,
- like the four ways to divide.
- CONVERT_EXPR can also be used to convert a real to an integer,
- and that is what is used in languages that do not have ways of
- specifying which of these is wanted. Maybe these are not needed. */
+/* Conversion of real to fixed point by truncation. */
DEFTREECODE (FIX_TRUNC_EXPR, "fix_trunc_expr", tcc_unary, 1)
-DEFTREECODE (FIX_CEIL_EXPR, "fix_ceil_expr", tcc_unary, 1)
-DEFTREECODE (FIX_FLOOR_EXPR, "fix_floor_expr", tcc_unary, 1)
-DEFTREECODE (FIX_ROUND_EXPR, "fix_round_expr", tcc_unary, 1)
/* Conversion of an integer to a real. */
DEFTREECODE (FLOAT_EXPR, "float_expr", tcc_unary, 1)
represented by CONVERT_EXPR or NOP_EXPR nodes. */
DEFTREECODE (CONVERT_EXPR, "convert_expr", tcc_unary, 1)
+/* Conversion of a fixed-point value to an integer, a real, or a fixed-point
+ value. Or conversion of a fixed-point value from an integer, a real, or
+ a fixed-point value. */
+DEFTREECODE (FIXED_CONVERT_EXPR, "fixed_convert_expr", tcc_unary, 1)
+
/* Represents a conversion expected to require no code to be generated. */
DEFTREECODE (NOP_EXPR, "nop_expr", tcc_unary, 1)
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)
OFFSET (integer constant). Corresponding address is
SYMBOL + BASE + STEP * INDEX + OFFSET. Only variations and values valid on
the target are allowed.
+
+ The type of STEP, INDEX and OFFSET is sizetype. The type of BASE is
+ 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
/* OpenMP - #pragma omp sections [clause1 ... clauseN]
Operand 0: OMP_SECTIONS_BODY: Sections body.
Operand 1: OMP_SECTIONS_CLAUSES: List of clauses.
- Operand 2: OMP_SECTIONS_SECTIONS: Vector of the different sections
- in the body. Only valid after lowering and destroyed
- after the CFG has been built. */
+ Operand 2: OMP_SECTIONS_CONTROL: The control variable used for deciding
+ which of the sections to execute. */
DEFTREECODE (OMP_SECTIONS, "omp_sections", tcc_statement, 3)
+/* This tree immediately follows OMP_SECTIONS, and represents the switch
+ used to decide which branch is taken. */
+DEFTREECODE (OMP_SECTIONS_SWITCH, "omp_sections_switch", tcc_statement, 0)
+
/* OpenMP - #pragma omp single
Operand 0: OMP_SINGLE_BODY: Single section body.
Operand 1: OMP_SINGLE_CLAUSES: List of clauses. */
Operand 1: OMP_CRITICAL_NAME: Identifier for critical section. */
DEFTREECODE (OMP_CRITICAL, "omp_critical", tcc_statement, 2)
+/* Return from an OpenMP directive. */
+DEFTREECODE (OMP_RETURN, "omp_return", tcc_statement, 0)
+
+/* OpenMP - An intermediate tree code to mark the location of the
+ loop or sections iteration in the partially lowered code.
+ The arguments are definition and use of the control variable. */
+DEFTREECODE (OMP_CONTINUE, "omp_continue", tcc_statement, 2)
+
/* OpenMP - #pragma omp atomic
Operand 0: The address at which the atomic operation is to be performed.
This address should be stabilized with save_expr.
/* OpenMP clauses. */
DEFTREECODE (OMP_CLAUSE, "omp_clause", tcc_exceptional, 0)
-/* Return from an OpenMP directive. */
-DEFTREECODE (OMP_RETURN_EXPR, "omp_return", tcc_statement, 0)
-
/* Reduction operations.
Operations that take a vector of elements and "reduce" it to a scalar
result (e.g. summing the elements of the vector, finding the minimum over
Operand 1 is an integer shift amount in bits. */
DEFTREECODE (VEC_LSHIFT_EXPR, "vec_lshift_expr", tcc_binary, 2)
DEFTREECODE (VEC_RSHIFT_EXPR, "vec_rshift_expr", tcc_binary, 2)
+\f
+/* GIMPLE tree codes. */
+
+/* Assignment expression. Operand 0 is the what to set; 1, the new value. */
+DEFTREECODE (GIMPLE_MODIFY_STMT, "gimple_modify_stmt", tcc_gimple_stmt, 2)
+
+/* Widening vector multiplication.
+ The two operands are vectors with N elements of size S. Multiplying the
+ elements of the two vectors will result in N products of size 2*S.
+ VEC_WIDEN_MULT_HI_EXPR computes the N/2 high products.
+ VEC_WIDEN_MULT_LO_EXPR computes the N/2 low products. */
+DEFTREECODE (VEC_WIDEN_MULT_HI_EXPR, "widen_mult_hi_expr", tcc_binary, 2)
+DEFTREECODE (VEC_WIDEN_MULT_LO_EXPR, "widen_mult_lo_expr", tcc_binary, 2)
+
+/* Unpack (extract and promote/widen) the high/low elements of the input
+ vector into the output vector. The input vector has twice as many
+ elements as the output vector, that are half the size of the elements
+ of the output vector. This is used to support type promotion. */
+DEFTREECODE (VEC_UNPACK_HI_EXPR, "vec_unpack_hi_expr", tcc_unary, 1)
+DEFTREECODE (VEC_UNPACK_LO_EXPR, "vec_unpack_lo_expr", tcc_unary, 1)
+
+/* Unpack (extract) the high/low elements of the input vector, convert
+ fixed point values to floating point and widen elements into the
+ output vector. The input vector has twice as many elements as the output
+ vector, that are half the size of the elements of the output vector. */
+DEFTREECODE (VEC_UNPACK_FLOAT_HI_EXPR, "vec_unpack_float_hi_expr", tcc_unary, 1)
+DEFTREECODE (VEC_UNPACK_FLOAT_LO_EXPR, "vec_unpack_float_lo_expr", tcc_unary, 1)
+
+/* Pack (demote/narrow and merge) the elements of the two input vectors
+ into the output vector using truncation/saturation.
+ The elements of the input vectors are twice the size of the elements of the
+ output vector. This is used to support type demotion. */
+DEFTREECODE (VEC_PACK_TRUNC_EXPR, "vec_pack_trunc_expr", tcc_binary, 2)
+DEFTREECODE (VEC_PACK_SAT_EXPR, "vec_pack_sat_expr", tcc_binary, 2)
+
+/* Convert floating point values of the two input vectors to integer
+ and pack (narrow and merge) the elements into the output vector. The
+ elements of the input vector are twice the size of the elements of
+ the output vector. */
+DEFTREECODE (VEC_PACK_FIX_TRUNC_EXPR, "vec_pack_fix_trunc_expr", tcc_binary, 2)
+
+/* Extract even/odd fields from vectors. */
+DEFTREECODE (VEC_EXTRACT_EVEN_EXPR, "vec_extracteven_expr", tcc_binary, 2)
+DEFTREECODE (VEC_EXTRACT_ODD_EXPR, "vec_extractodd_expr", tcc_binary, 2)
+
+/* Merge input vectors interleaving their fields. */
+DEFTREECODE (VEC_INTERLEAVE_HIGH_EXPR, "vec_interleavehigh_expr", tcc_binary, 2)
+DEFTREECODE (VEC_INTERLEAVE_LOW_EXPR, "vec_interleavelow_expr", tcc_binary, 2)
/*
Local variables:
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