gcc/testsuite/jit.dg/test-builtin-memcpy.c

   1 #include <stdlib.h>
   2 #include <stdio.h>
   3 #include <string.h>
   4
   5 #include "libgccjit.h"
   6
   7 #include "harness.h"
   8
   9 void
  10 create_code (gcc_jit_context *ctxt, void *user_data)
  11 {
  12   /* Let's try to inject the equivalent of:
  13       void *
  14       test_memcpy (void *dest, const void *src, size_t n)
  15       {
  16         return __builtin_memcpy (dest, src, n);
  17       }
  18    */
  19   gcc_jit_type *t_void_ptr
  20     = gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_VOID_PTR);
  21   gcc_jit_type *t_const_void_ptr
  22     = gcc_jit_type_get_pointer (gcc_jit_type_get_const
  23                                 (gcc_jit_context_get_type
  24                                  (ctxt, GCC_JIT_TYPE_VOID)));
  25   gcc_jit_type *t_size_t
  26     = gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_SIZE_T);
  27
  28   gcc_jit_param *dest
  29     = gcc_jit_context_new_param (ctxt, NULL, t_void_ptr, "dest");
  30   gcc_jit_param *src
  31     = gcc_jit_context_new_param (ctxt, NULL, t_const_void_ptr, "src");
  32   gcc_jit_param *n = gcc_jit_context_new_param (ctxt, NULL, t_size_t, "n");
  33   gcc_jit_param *params[3] = {dest, src, n};
  34   gcc_jit_function *func =
  35     gcc_jit_context_new_function (ctxt, NULL,
  36                                   GCC_JIT_FUNCTION_EXPORTED,
  37                                   t_void_ptr,
  38                                   "test_memcpy",
  39                                   3, params, 0);
  40
  41   gcc_jit_function *jit_memcpy
  42     = gcc_jit_context_get_builtin_function (ctxt, "__builtin_memcpy");
  43
  44
  45   gcc_jit_block *b_initial
  46     = gcc_jit_function_new_block (func, "initial");
  47   gcc_jit_rvalue *args[3] = {gcc_jit_param_as_rvalue (dest),
  48                              gcc_jit_param_as_rvalue (src),
  49                              gcc_jit_param_as_rvalue (n)};
  50   gcc_jit_rvalue *call
  51     = gcc_jit_context_new_call (ctxt, NULL, jit_memcpy, 3, args);
  52   gcc_jit_block_end_with_return (b_initial, NULL, call);
  53 }
  54
  55 void
  56 verify_code (gcc_jit_context *ctxt, gcc_jit_result *result)
  57 {
  58   typedef void *(*test_memcpy_type) (void *, const void *, size_t);
  59   CHECK_NON_NULL (result);
  60   test_memcpy_type test_memcpy =
  61     (test_memcpy_type)gcc_jit_result_get_code (result, "test_memcpy");
  62   CHECK_NON_NULL (test_memcpy);
  63
  64   int dst = 13;
  65   int src = 42;
  66   void *out = test_memcpy (&dst, &src, sizeof(int));
  67   CHECK_VALUE(out, &dst);
  68   CHECK_VALUE(dst, 42);
  69 }