gcc/testsuite/gcc.dg/20070507-1.c

   1 /* This failed on s390x due to bug in loop.c.
   2    loop.c failed to remove a REG_EQUAL note when
   3    hoisting an insn from a loop body.  */
   4
   5 /* { dg-options "-O3 -fPIC" } */
   6 /* { dg-do run { target fpic } } */
   7
   8 typedef __SIZE_TYPE__ size_t;
   9 int memcmp(const void *s1, const void *s2, size_t n);
  10
  11 typedef struct
  12 {
  13   char name[30];
  14   int a;
  15 } LOCAL;
  16
  17 int global = 0;
  18 int sy = 1;
  19 int subroutine_offset;
  20
  21 LOCAL local = { "local", 0 };
  22 LOCAL keywords = { "keywords", 1 };
  23 int local_table = 0;
  24 int keywords_table = 0;
  25
  26 void __attribute__((noinline)) bar (char *p_buffer)
  27 {
  28   p_buffer[255] = 1;
  29 }
  30
  31 int __attribute__((noinline)) foo (char *p_str1)
  32 {
  33   global = 1;
  34   return 1;
  35 }
  36
  37 int __attribute__((noinline)) loop_next (int *p_table, char *p_table_head)
  38 {
  39   static loop_next = 0;
  40
  41   if (loop_next == 1)
  42     return 1;
  43
  44   loop_next = 1;
  45   return 0;
  46 }
  47
  48 int
  49 main ()
  50 {
  51   char buffer[256];
  52   int ende = 0;
  53   int index;
  54   int local_base = 2;
  55
  56   keywords.a = 1;
  57   for (sy = 0;; sy++)
  58     {
  59       for (index = 1;;)
  60         {
  61           bar (buffer);
  62           if (buffer[sy] != 0)
  63             {
  64               ende = 1;
  65               break;
  66             };
  67           if (foo (buffer))
  68             {
  69               keywords.a += index - 1;
  70               break;
  71             }
  72           index++;
  73         }
  74       if (ende)
  75         break;
  76     }
  77
  78   subroutine_offset = 0;
  79
  80   for (;;)
  81     {
  82       if (loop_next (&keywords_table, (char*)&keywords))
  83         break;
  84
  85       if ((!memcmp (keywords.name, "+++", 3)))
  86         local_base = 100;
  87       else
  88         local_base = 0;
  89
  90       if ((!memcmp (keywords.name, "+++", 3)))
  91         subroutine_offset += local_table;
  92
  93       for (;;)
  94         {
  95           if (loop_next (&local_table, (char*)&local))
  96             break;;
  97           if ((local.a == 0))
  98             continue;;
  99           foo (local.name);
 100         }
 101     }
 102   return 0;
 103 }