1 #include <stdlib.h>
2 #include <stdio.h>
3 #include <string.h>
4
5 #include "libgccjit.h"
6
7 #include "harness.h"
8
9 /* Quote from here in docs/topics/functions.rst. */
10
11 void
12 create_code (gcc_jit_context *ctxt, void *user_data)
13 {
14 /* Let's try to inject the equivalent of:
15 int
16 test_switch (int x)
17 {
18 switch (x)
19 {
20 case 0 ... 5:
21 return 3;
22
23 case 25 ... 27:
24 return 4;
25
26 case -42 ... -17:
27 return 83;
28
29 case 40:
30 return 8;
31
32 default:
33 return 10;
34 }
35 }
36 */
37 gcc_jit_type *t_int =
38 gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_INT);
39 gcc_jit_type *return_type = t_int;
40 gcc_jit_param *x =
41 gcc_jit_context_new_param (ctxt, NULL, t_int, "x");
42 gcc_jit_param *params[1] = {x};
43 gcc_jit_function *func =
44 gcc_jit_context_new_function (ctxt, NULL,
45 GCC_JIT_FUNCTION_EXPORTED,
46 return_type,
47 "test_switch",
48 1, params, 0);
49
50 gcc_jit_block *b_initial =
51 gcc_jit_function_new_block (func, "initial");
52
53 gcc_jit_block *b_default =
54 gcc_jit_function_new_block (func, "default");
55 gcc_jit_block *b_case_0_5 =
56 gcc_jit_function_new_block (func, "case_0_5");
57 gcc_jit_block *b_case_25_27 =
58 gcc_jit_function_new_block (func, "case_25_27");
59 gcc_jit_block *b_case_m42_m17 =
60 gcc_jit_function_new_block (func, "case_m42_m17");
61 gcc_jit_block *b_case_40 =
62 gcc_jit_function_new_block (func, "case_40");
63
64 gcc_jit_case *cases[4] = {
65 gcc_jit_context_new_case (
66 ctxt,
67 gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 0),
68 gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 5),
69 b_case_0_5),
70 gcc_jit_context_new_case (
71 ctxt,
72 gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 25),
73 gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 27),
74 b_case_25_27),
75 gcc_jit_context_new_case (
76 ctxt,
77 gcc_jit_context_new_rvalue_from_int (ctxt, t_int, -42),
78 gcc_jit_context_new_rvalue_from_int (ctxt, t_int, -17),
79 b_case_m42_m17),
80 gcc_jit_context_new_case (
81 ctxt,
82 gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 40),
83 gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 40),
84 b_case_40)
85 };
86 gcc_jit_block_end_with_switch (
87 b_initial, NULL,
88 gcc_jit_param_as_rvalue (x),
89 b_default,
90 4, cases);
91
92 gcc_jit_block_end_with_return (
93 b_case_0_5, NULL,
94 gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 3));
95 gcc_jit_block_end_with_return (
96 b_case_25_27, NULL,
97 gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 4));
98 gcc_jit_block_end_with_return (
99 b_case_m42_m17, NULL,
100 gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 83));
101 gcc_jit_block_end_with_return (
102 b_case_40, NULL,
103 gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 8));
104 gcc_jit_block_end_with_return (
105 b_default, NULL,
106 gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 10));
107 }
108
109 /* Quote up to here in docs/topics/functions.rst. */
110
111 static int
112 c_test_switch (int x)
113 {
114 switch (x)
115 {
116 case 0 ... 5:
117 return 3;
118 case 25 ... 27:
119 return 4;
120 case -42 ... -17:
121 return 83;
122 case 40:
123 return 8;
124 default:
125 return 10;
126 }
127 }
128
129 void
130 verify_code (gcc_jit_context *ctxt, gcc_jit_result *result)
131 {
132 typedef int (*test_switch_type) (int);
133 CHECK_NON_NULL (result);
134 test_switch_type test_switch =
135 (test_switch_type)gcc_jit_result_get_code (result, "test_switch");
136 CHECK_NON_NULL (test_switch);
137
138 int i;
139
140 for (i = -255; i < 255; i++)
141 {
142 int val = test_switch (i);
143 int exp = c_test_switch (i);
144 if (val != exp)
145 fail ("test_switch (%i) returned: %i; expected; %i", i, val, exp);
146 }
147 }