1 /* Functions for high level gimple building routines.
2 Copyright (C) 2013-2014 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
11 GCC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
22 #include "coretypes.h"
24 #include "stringpool.h"
31 #include "hard-reg-set.h"
34 #include "basic-block.h"
35 #include "tree-ssa-alias.h"
36 #include "internal-fn.h"
37 #include "gimple-expr.h"
40 #include "tree-ssanames.h"
43 /* Return the expression type to use based on the CODE and type of
44 the given operand OP. If the expression CODE is a comparison,
45 the returned type is boolean_type_node. Otherwise, it returns
49 get_expr_type (enum tree_code code
, tree op
)
51 return (TREE_CODE_CLASS (code
) == tcc_comparison
)
57 /* Build a new gimple assignment. The LHS of the assignment is a new
58 temporary whose type matches the given expression. MODE indicates
59 whether the LHS should be an SSA or a normal temporary. CODE is
60 the expression code for the RHS. OP1 is the first operand and VAL
61 is an integer value to be used as the second operand. */
64 build_assign (enum tree_code code
, tree op1
, int val
, tree lhs
)
66 tree op2
= build_int_cst (TREE_TYPE (op1
), val
);
68 lhs
= make_ssa_name (get_expr_type (code
, op1
));
69 return gimple_build_assign_with_ops (code
, lhs
, op1
, op2
);
73 build_assign (enum tree_code code
, gimple g
, int val
, tree lhs
)
75 return build_assign (code
, gimple_assign_lhs (g
), val
, lhs
);
79 /* Build and return a new GIMPLE assignment. The new assignment will
80 have the opcode CODE and operands OP1 and OP2. The type of the
81 expression on the RHS is inferred to be the type of OP1.
83 The LHS of the statement will be an SSA name or a GIMPLE temporary
84 in normal form depending on the type of builder invoking this
88 build_assign (enum tree_code code
, tree op1
, tree op2
, tree lhs
)
91 lhs
= make_ssa_name (get_expr_type (code
, op1
));
92 return gimple_build_assign_with_ops (code
, lhs
, op1
, op2
);
96 build_assign (enum tree_code code
, gimple op1
, tree op2
, tree lhs
)
98 return build_assign (code
, gimple_assign_lhs (op1
), op2
, lhs
);
102 build_assign (enum tree_code code
, tree op1
, gimple op2
, tree lhs
)
104 return build_assign (code
, op1
, gimple_assign_lhs (op2
), lhs
);
108 build_assign (enum tree_code code
, gimple op1
, gimple op2
, tree lhs
)
110 return build_assign (code
, gimple_assign_lhs (op1
), gimple_assign_lhs (op2
),
115 /* Create and return a type cast assignment. This creates a NOP_EXPR
116 that converts OP to TO_TYPE. */
119 build_type_cast (tree to_type
, tree op
, tree lhs
)
121 if (lhs
== NULL_TREE
)
122 lhs
= make_ssa_name (to_type
);
123 return gimple_build_assign_with_ops (NOP_EXPR
, lhs
, op
);
127 build_type_cast (tree to_type
, gimple op
, tree lhs
)
129 return build_type_cast (to_type
, gimple_assign_lhs (op
), lhs
);