diff options
Diffstat (limited to 'gcc/tree.def')
| -rw-r--r-- | gcc/tree.def | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/gcc/tree.def b/gcc/tree.def index 01d9b3060de..60ac1ade865 100644 --- a/gcc/tree.def +++ b/gcc/tree.def @@ -1,6 +1,6 @@ /* 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, + Copyright (C) 1987, 1988, 1993, 1995, 1997, 1998, 2000, 2001, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. This file is part of GCC. @@ -115,7 +115,7 @@ DEFTREECODE (BLOCK, "block", tcc_exceptional, 0) macros in tree.h. Changing the order will degrade the speed of the compiler. OFFSET_TYPE, ENUMERAL_TYPE, BOOLEAN_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 @@ -157,7 +157,7 @@ DEFTREECODE (REAL_TYPE, "real_type", tcc_type, 0) 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) @@ -174,7 +174,7 @@ DEFTREECODE (REFERENCE_TYPE, "reference_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. It must be of scalar arithmetic type, not including pointer type. */ @@ -189,7 +189,7 @@ DEFTREECODE (VECTOR_TYPE, "vector_type", tcc_type, 0) 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. @@ -226,7 +226,7 @@ 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) @@ -494,7 +494,7 @@ DEFTREECODE (TARGET_EXPR, "target_expr", tcc_expression, 4) 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. The - condition in operand 0 must be of integral type. + condition in operand 0 must be of integral type. In cfg gimple, if you do not have a selection expression, operands 1 and 2 are NULL. The operands are then taken from the cfg edges. */ @@ -921,7 +921,7 @@ DEFTREECODE (STATEMENT_LIST, "statement_list", tcc_exceptional, 0) /* Predicate assertion. Artificial expression generated by the optimizers to keep track of predicate values. This expression may only appear on the RHS of assignments. - + Given X = ASSERT_EXPR <Y, EXPR>, the optimizers can infer two things: @@ -954,8 +954,8 @@ DEFTREECODE (WITH_SIZE_EXPR, "with_size_expr", tcc_expression, 2) If OFF > 0, the last VS - OFF elements of vector OP0 are concatenated to the first OFF elements of the vector OP1. If OFF == 0, then the returned vector is OP1. - On different targets OFF may take different forms; It can be an address, in - which case its low log2(VS)-1 bits define the offset, or it can be a mask + On different targets OFF may take different forms; It can be an address, in + which case its low log2(VS)-1 bits define the offset, or it can be a mask generated by the builtin targetm.vectorize.mask_for_load_builtin_decl. */ DEFTREECODE (REALIGN_LOAD_EXPR, "realign_load", tcc_expression, 3) @@ -1046,12 +1046,12 @@ DEFTREECODE (OMP_ATOMIC, "omp_atomic", tcc_statement, 2) /* OpenMP clauses. */ DEFTREECODE (OMP_CLAUSE, "omp_clause", tcc_exceptional, 0) -/* Reduction operations. +/* 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 the vector elements, etc). Operand 0 is a vector; the first element in the vector has the result. - Operand 1 is a vector. */ + Operand 1 is a vector. */ DEFTREECODE (REDUC_MAX_EXPR, "reduc_max_expr", tcc_unary, 1) DEFTREECODE (REDUC_MIN_EXPR, "reduc_min_expr", tcc_unary, 1) DEFTREECODE (REDUC_PLUS_EXPR, "reduc_plus_expr", tcc_unary, 1) @@ -1062,7 +1062,7 @@ DEFTREECODE (REDUC_PLUS_EXPR, "reduc_plus_expr", tcc_unary, 1) twice the size of t1. DOT_PROD_EXPR(arg1,arg2,arg3) is equivalent to: tmp = WIDEN_MULT_EXPR(arg1, arg2); arg3 = PLUS_EXPR (tmp, arg3); - or: + or: tmp = WIDEN_MULT_EXPR(arg1, arg2); arg3 = WIDEN_SUM_EXPR (tmp, arg3); */ DEFTREECODE (DOT_PROD_EXPR, "dot_prod_expr", tcc_expression, 3) @@ -1075,7 +1075,7 @@ DEFTREECODE (DOT_PROD_EXPR, "dot_prod_expr", tcc_expression, 3) the first argument from type t1 to type t2, and then summing it with the second argument. */ DEFTREECODE (WIDEN_SUM_EXPR, "widen_sum_expr", tcc_binary, 2) - + /* Widening multiplication. The two arguments are of type t1. The result is of type t2, such that t2 is at least twice |