gcc/testsuite/jit.dg/test-validly-unreachable-block.c

   1 #include <math.h>
   2 #include <stdlib.h>
   3 #include <stdio.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_fn ()
  15        {
  16          return;
  17
  18          return;
  19        }
  20      where the second block is unreachable, but have it
  21      survive validation (PR jit/66546).
  22   */
  23   gcc_jit_context_set_bool_allow_unreachable_blocks (ctxt, 1);
  24
  25   gcc_jit_type *void_t =
  26     gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_VOID);
  27
  28   /* Build the test_fn.  */
  29   gcc_jit_function *test_fn =
  30     gcc_jit_context_new_function (ctxt, NULL,
  31                                   GCC_JIT_FUNCTION_EXPORTED,
  32                                   void_t,
  33                                   "test_fn",
  34                                   0, NULL,
  35                                   0);
  36   gcc_jit_block *initial =
  37     gcc_jit_function_new_block (test_fn, "a");
  38   gcc_jit_block *unreachable =
  39     gcc_jit_function_new_block (test_fn, "b");
  40
  41   gcc_jit_block_end_with_void_return (initial, NULL);
  42
  43   gcc_jit_block_end_with_void_return (unreachable, NULL);
  44 }
  45
  46 void
  47 verify_code (gcc_jit_context *ctxt, gcc_jit_result *result)
  48 {
  49   /* Ensure that the "unreachable blocks" validator was ignored.  */
  50   CHECK_NON_NULL (result);
  51 }