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ff2a63a7 | 1 | /* Functions for high level gimple building routines. |
5624e564 | 2 | Copyright (C) 2013-2015 Free Software Foundation, Inc. |
ff2a63a7 AM |
3 | |
4 | This file is part of GCC. | |
5 | ||
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) | |
9 | any later version. | |
10 | ||
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. | |
15 | ||
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/>. */ | |
19 | ||
20 | #include "config.h" | |
21 | #include "system.h" | |
22 | #include "coretypes.h" | |
40e23961 | 23 | #include "alias.h" |
c7131fb2 | 24 | #include "backend.h" |
ff2a63a7 | 25 | #include "tree.h" |
c7131fb2 AM |
26 | #include "gimple.h" |
27 | #include "hard-reg-set.h" | |
28 | #include "options.h" | |
40e23961 | 29 | #include "fold-const.h" |
d8a2d370 | 30 | #include "stringpool.h" |
2fb9a547 | 31 | #include "internal-fn.h" |
442b4905 | 32 | #include "tree-ssanames.h" |
ff2a63a7 AM |
33 | |
34 | ||
35 | /* Return the expression type to use based on the CODE and type of | |
36 | the given operand OP. If the expression CODE is a comparison, | |
37 | the returned type is boolean_type_node. Otherwise, it returns | |
38 | the type of OP. */ | |
39 | ||
40 | static tree | |
41 | get_expr_type (enum tree_code code, tree op) | |
42 | { | |
43 | return (TREE_CODE_CLASS (code) == tcc_comparison) | |
44 | ? boolean_type_node | |
45 | : TREE_TYPE (op); | |
46 | } | |
47 | ||
48 | ||
49 | /* Build a new gimple assignment. The LHS of the assignment is a new | |
50 | temporary whose type matches the given expression. MODE indicates | |
51 | whether the LHS should be an SSA or a normal temporary. CODE is | |
52 | the expression code for the RHS. OP1 is the first operand and VAL | |
53 | is an integer value to be used as the second operand. */ | |
54 | ||
538dd0b7 | 55 | gassign * |
ff2a63a7 AM |
56 | build_assign (enum tree_code code, tree op1, int val, tree lhs) |
57 | { | |
58 | tree op2 = build_int_cst (TREE_TYPE (op1), val); | |
59 | if (lhs == NULL_TREE) | |
b731b390 | 60 | lhs = make_ssa_name (get_expr_type (code, op1)); |
0d0e4a03 | 61 | return gimple_build_assign (lhs, code, op1, op2); |
ff2a63a7 AM |
62 | } |
63 | ||
538dd0b7 | 64 | gassign * |
ff2a63a7 AM |
65 | build_assign (enum tree_code code, gimple g, int val, tree lhs ) |
66 | { | |
67 | return build_assign (code, gimple_assign_lhs (g), val, lhs); | |
68 | } | |
69 | ||
70 | ||
71 | /* Build and return a new GIMPLE assignment. The new assignment will | |
72 | have the opcode CODE and operands OP1 and OP2. The type of the | |
73 | expression on the RHS is inferred to be the type of OP1. | |
74 | ||
75 | The LHS of the statement will be an SSA name or a GIMPLE temporary | |
76 | in normal form depending on the type of builder invoking this | |
77 | function. */ | |
78 | ||
538dd0b7 | 79 | gassign * |
ff2a63a7 AM |
80 | build_assign (enum tree_code code, tree op1, tree op2, tree lhs) |
81 | { | |
82 | if (lhs == NULL_TREE) | |
b731b390 | 83 | lhs = make_ssa_name (get_expr_type (code, op1)); |
0d0e4a03 | 84 | return gimple_build_assign (lhs, code, op1, op2); |
ff2a63a7 AM |
85 | } |
86 | ||
538dd0b7 | 87 | gassign * |
ff2a63a7 AM |
88 | build_assign (enum tree_code code, gimple op1, tree op2, tree lhs) |
89 | { | |
90 | return build_assign (code, gimple_assign_lhs (op1), op2, lhs); | |
91 | } | |
92 | ||
538dd0b7 | 93 | gassign * |
ff2a63a7 AM |
94 | build_assign (enum tree_code code, tree op1, gimple op2, tree lhs) |
95 | { | |
96 | return build_assign (code, op1, gimple_assign_lhs (op2), lhs); | |
97 | } | |
98 | ||
538dd0b7 | 99 | gassign * |
ff2a63a7 AM |
100 | build_assign (enum tree_code code, gimple op1, gimple op2, tree lhs) |
101 | { | |
102 | return build_assign (code, gimple_assign_lhs (op1), gimple_assign_lhs (op2), | |
103 | lhs); | |
104 | } | |
105 | ||
106 | ||
107 | /* Create and return a type cast assignment. This creates a NOP_EXPR | |
108 | that converts OP to TO_TYPE. */ | |
109 | ||
538dd0b7 | 110 | gassign * |
ff2a63a7 AM |
111 | build_type_cast (tree to_type, tree op, tree lhs) |
112 | { | |
113 | if (lhs == NULL_TREE) | |
b731b390 | 114 | lhs = make_ssa_name (to_type); |
0d0e4a03 | 115 | return gimple_build_assign (lhs, NOP_EXPR, op); |
ff2a63a7 AM |
116 | } |
117 | ||
538dd0b7 | 118 | gassign * |
ff2a63a7 AM |
119 | build_type_cast (tree to_type, gimple op, tree lhs) |
120 | { | |
121 | return build_type_cast (to_type, gimple_assign_lhs (op), lhs); | |
122 | } | |
123 | ||
124 | ||
125 |