Viewing file:  test-switch.c (3.56 KB) -rw-r--r--
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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "libgccjit.h"
#include "harness.h"
/* Quote from here in docs/topics/functions.rst. */
void
create_code (gcc_jit_context *ctxt, void *user_data)
{
/* Let's try to inject the equivalent of:
int
test_switch (int x)
{
switch (x)
{
case 0 ... 5:
return 3;
case 25 ... 27:
return 4;
case -42 ... -17:
return 83;
case 40:
return 8;
default:
return 10;
}
}
*/
gcc_jit_type *t_int =
gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_INT);
gcc_jit_type *return_type = t_int;
gcc_jit_param *x =
gcc_jit_context_new_param (ctxt, NULL, t_int, "x");
gcc_jit_param *params[1] = {x};
gcc_jit_function *func =
gcc_jit_context_new_function (ctxt, NULL,
GCC_JIT_FUNCTION_EXPORTED,
return_type,
"test_switch",
1, params, 0);
gcc_jit_block *b_initial =
gcc_jit_function_new_block (func, "initial");
gcc_jit_block *b_default =
gcc_jit_function_new_block (func, "default");
gcc_jit_block *b_case_0_5 =
gcc_jit_function_new_block (func, "case_0_5");
gcc_jit_block *b_case_25_27 =
gcc_jit_function_new_block (func, "case_25_27");
gcc_jit_block *b_case_m42_m17 =
gcc_jit_function_new_block (func, "case_m42_m17");
gcc_jit_block *b_case_40 =
gcc_jit_function_new_block (func, "case_40");
gcc_jit_case *cases[4] = {
gcc_jit_context_new_case (
ctxt,
gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 0),
gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 5),
b_case_0_5),
gcc_jit_context_new_case (
ctxt,
gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 25),
gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 27),
b_case_25_27),
gcc_jit_context_new_case (
ctxt,
gcc_jit_context_new_rvalue_from_int (ctxt, t_int, -42),
gcc_jit_context_new_rvalue_from_int (ctxt, t_int, -17),
b_case_m42_m17),
gcc_jit_context_new_case (
ctxt,
gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 40),
gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 40),
b_case_40)
};
gcc_jit_block_end_with_switch (
b_initial, NULL,
gcc_jit_param_as_rvalue (x),
b_default,
4, cases);
gcc_jit_block_end_with_return (
b_case_0_5, NULL,
gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 3));
gcc_jit_block_end_with_return (
b_case_25_27, NULL,
gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 4));
gcc_jit_block_end_with_return (
b_case_m42_m17, NULL,
gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 83));
gcc_jit_block_end_with_return (
b_case_40, NULL,
gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 8));
gcc_jit_block_end_with_return (
b_default, NULL,
gcc_jit_context_new_rvalue_from_int (ctxt, t_int, 10));
}
/* Quote up to here in docs/topics/functions.rst. */
static int
c_test_switch (int x)
{
switch (x)
{
case 0 ... 5:
return 3;
case 25 ... 27:
return 4;
case -42 ... -17:
return 83;
case 40:
return 8;
default:
return 10;
}
}
void
verify_code (gcc_jit_context *ctxt, gcc_jit_result *result)
{
typedef int (*test_switch_type) (int);
CHECK_NON_NULL (result);
test_switch_type test_switch =
(test_switch_type)gcc_jit_result_get_code (result, "test_switch");
CHECK_NON_NULL (test_switch);
int i;
for (i = -255; i < 255; i++)
{
int val = test_switch (i);
int exp = c_test_switch (i);
if (val != exp)
fail ("test_switch (%i) returned: %i; expected; %i", i, val, exp);
}
}
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