gcc/testsuite/jit.dg/test-hello-world.c

#include <stdlib.h>
#include <stdio.h>

#include "libgccjit.h"

#include "harness.h"

void
create_code (gcc_jit_context *ctxt, void *user_data)
{
  /* Let's try to inject the equivalent of:
     void
     hello_world (const char *name)
     {
        // a test comment
        printf ("hello %s\n", name);
     }
  */
  gcc_jit_type *void_type =
    gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_VOID);
  gcc_jit_type *const_char_ptr_type =
    gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_CONST_CHAR_PTR);
  gcc_jit_param *param_name =
    gcc_jit_context_new_param (ctxt, NULL, const_char_ptr_type, "name");
  gcc_jit_function *func =
    gcc_jit_context_new_function (ctxt, NULL,
                                  GCC_JIT_FUNCTION_EXPORTED,
                                  void_type,
                                  "hello_world",
                                  1, &param_name,
                                  0);

  gcc_jit_param *param_format =
    gcc_jit_context_new_param (ctxt, NULL, const_char_ptr_type, "format");
  gcc_jit_function *printf_func =
    gcc_jit_context_new_function (ctxt, NULL,
				  GCC_JIT_FUNCTION_IMPORTED,
				  gcc_jit_context_get_type (
				     ctxt, GCC_JIT_TYPE_INT),
				  "printf",
				  1, &param_format,
				  1);
  gcc_jit_rvalue *args[2];
  args[0] = gcc_jit_context_new_string_literal (ctxt, "hello %s\n");
  args[1] = gcc_jit_param_as_rvalue (param_name);

  gcc_jit_block *block = gcc_jit_function_new_block (func, NULL);

  gcc_jit_block_add_comment (
    block, NULL,
    "a test comment");

  gcc_jit_block_add_eval (
    block, NULL,
    gcc_jit_context_new_call (ctxt,
                              NULL,
                              printf_func,
                              2, args));
  gcc_jit_block_end_with_void_return (block, NULL);
}

extern void
verify_code (gcc_jit_context *ctxt, gcc_jit_result *result)
{
  typedef void (*fn_type) (const char *);
  CHECK_NON_NULL (result);
  fn_type hello_world =
    (fn_type)gcc_jit_result_get_code (result, "hello_world");
  CHECK_NON_NULL (hello_world);
  hello_world ("world");
  fflush (stdout);
}