/* 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.
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)
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.
+ CHNAGE_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)
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_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
+/* 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 modulo/saturating arithmetic.
+ 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_MOD_EXPR, "vec_pack_mod_expr", tcc_binary, 2)
+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)