Viewing file:  test-reading-struct.c (3.67 KB) -rw-r--r--
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#include <stdlib.h>
#include <stdio.h>
#include "libgccjit.h"
#include "harness.h"
struct bar
{
int x;
int y;
};
void
create_code (gcc_jit_context *ctxt, void *user_data)
{
/* Let's try to inject the equivalent of:
int
test_reading (const struct bar *f)
{
return f->x * f->y;
}
int
test_writing ()
{
struct bar tmp;
tmp.x = 5;
tmp.y = 7;
return test_reading (&tmp);
}
*/
gcc_jit_type *int_type =
gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_INT);
gcc_jit_field *x =
gcc_jit_context_new_field (ctxt,
NULL,
int_type,
"x");
gcc_jit_field *y =
gcc_jit_context_new_field (ctxt,
NULL,
int_type,
"y");
gcc_jit_field *fields[] = {x, y};
gcc_jit_type *struct_type =
gcc_jit_struct_as_type (
gcc_jit_context_new_struct_type (ctxt, NULL, "bar", 2, fields));
gcc_jit_type *const_struct_type = gcc_jit_type_get_const (struct_type);
gcc_jit_type *ptr_type = gcc_jit_type_get_pointer (const_struct_type);
/* Build "test_reading". */
gcc_jit_param *param_f =
gcc_jit_context_new_param (ctxt, NULL, ptr_type, "f");
gcc_jit_function *fn_test_reading =
gcc_jit_context_new_function (ctxt, NULL,
GCC_JIT_FUNCTION_EXPORTED,
int_type,
"test_reading",
1, ¶m_f,
0);
/* return f->x * f->y; */
gcc_jit_block *reading_block = gcc_jit_function_new_block (fn_test_reading, NULL);
gcc_jit_block_end_with_return (
reading_block,
NULL,
gcc_jit_context_new_binary_op (
ctxt, NULL,
GCC_JIT_BINARY_OP_MULT,
int_type,
gcc_jit_lvalue_as_rvalue (
gcc_jit_rvalue_dereference_field (
gcc_jit_param_as_rvalue (param_f),
NULL,
x)),
gcc_jit_lvalue_as_rvalue (
gcc_jit_rvalue_dereference_field (
gcc_jit_param_as_rvalue (param_f),
NULL,
y))));
/* Build "test_writing". */
gcc_jit_function *fn_test_writing =
gcc_jit_context_new_function (ctxt, NULL,
GCC_JIT_FUNCTION_EXPORTED,
int_type,
"test_writing",
0, NULL,
0);
/* struct bar tmp; */
gcc_jit_lvalue *local_tmp =
gcc_jit_function_new_local (fn_test_writing, NULL,
struct_type,
"tmp");
/* tmp.x = 5; */
gcc_jit_block *writing_block = gcc_jit_function_new_block (fn_test_writing, NULL);
gcc_jit_block_add_assignment (
writing_block, NULL,
gcc_jit_lvalue_access_field (local_tmp, NULL, x),
gcc_jit_context_new_rvalue_from_int (ctxt, int_type, 5));
/* tmp.y = 7; */
gcc_jit_block_add_assignment (
writing_block, NULL,
gcc_jit_lvalue_access_field (local_tmp, NULL, y),
gcc_jit_context_new_rvalue_from_int (ctxt, int_type, 7));
/* return test_reading (&tmp); */
gcc_jit_rvalue *arg = gcc_jit_lvalue_get_address (local_tmp, NULL);
gcc_jit_block_end_with_return (
writing_block,
NULL,
gcc_jit_context_new_call (
ctxt, NULL,
fn_test_reading,
1, &arg));
}
void
verify_code (gcc_jit_context *ctxt, gcc_jit_result *result)
{
typedef int (*fn_type) (void);
CHECK_NON_NULL (result);
fn_type test_writing =
(fn_type)gcc_jit_result_get_code (result, "test_writing");
CHECK_NON_NULL (test_writing);
/* Verify that the code correctly returns the product of the fields. */
CHECK_VALUE (test_writing (), 35);
}
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