gcc/testsuite/gcc.dg/tree-ssa/ifc-4.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-c -O2 -ftree-vectorize -fdump-tree-ifcvt-stats" { target *-*-* } } */
   3
   4 struct ht
   5 {
   6   void * (*alloc_subobject) (int);
   7 };
   8 typedef struct cpp_reader cpp_reader;
   9 typedef struct cpp_token cpp_token;
  10 typedef struct cpp_macro cpp_macro;
  11 enum cpp_ttype
  12 {
  13     CPP_PASTE,
  14 };
  15 struct cpp_token {
  16   __extension__ enum cpp_ttype type : 8;
  17 } cpp_comment_table;
  18 struct cpp_macro {
  19   union cpp_macro_u
  20   {
  21     cpp_token * tokens;
  22   } exp;
  23   unsigned int count;
  24 };
  25 struct cpp_reader
  26 {
  27   struct ht *hash_table;
  28 };
  29 void
  30 create_iso_definition (cpp_reader *pfile, cpp_macro *macro)
  31 {
  32   unsigned int num_extra_tokens = 0;
  33   {
  34     cpp_token *tokns =
  35       (cpp_token *) pfile->hash_table->alloc_subobject (sizeof (cpp_token)
  36                                                         * macro->count);
  37     {
  38       cpp_token *normal_dest = tokns;
  39       cpp_token *extra_dest = tokns + macro->count - num_extra_tokens;
  40       unsigned int i;
  41       for (i = 0; i < macro->count; i++)
  42         {
  43           if (macro->exp.tokens[i].type == CPP_PASTE)
  44             *extra_dest++ = macro->exp.tokens[i];
  45           else
  46             *normal_dest++ = macro->exp.tokens[i];
  47         }
  48     }
  49   }
  50 }
  51
  52 /* This cannot be if-converted because the stores are to aggregate types.  */
  53 /* { dg-final { scan-tree-dump-times "Applying if-conversion" 0 "ifcvt" } } */