gcc/testsuite/gcc.target/i386/loop-3.c

   1 /* PR target/11044 */
   2 /* Originator: Tim McGrath <misty-@charter.net> */
   3 /* Testcase contributed by Eric Botcazou <ebotcazou@libertysurf.fr> */
   4 /* { dg-do run } */
   5 /* { dg-require-effective-target ia32 } */
   6 /* { dg-options "-mtune=k6 -O3 -ffast-math -funroll-loops" } */
   7
   8 extern void *memset (void *, int, __SIZE_TYPE__);
   9 extern void abort (void);
  10
  11 typedef struct
  12 {
  13         unsigned char colormod;
  14 } entity_state_t;
  15
  16 typedef struct
  17 {
  18         int num_entities;
  19         entity_state_t *entities;
  20 } packet_entities_t;
  21
  22 typedef struct
  23 {
  24         double senttime;
  25         float ping_time;
  26         packet_entities_t entities;
  27 } client_frame_t;
  28
  29 typedef enum
  30 {
  31         cs_free,
  32         cs_server,
  33         cs_zombie,
  34         cs_connected,
  35         cs_spawned
  36 } sv_client_state_t;
  37
  38 typedef struct client_s
  39 {
  40         sv_client_state_t state;
  41         int ping;
  42         client_frame_t frames[64];
  43 } client_t;
  44
  45 int CalcPing (client_t *cl)
  46 {
  47         float ping;
  48         int count, i;
  49         register client_frame_t *frame;
  50
  51         if (cl->state == cs_server)
  52                 return cl->ping;
  53         ping = 0;
  54         count = 0;
  55         for (frame = cl->frames, i = 0; i < 64; i++, frame++) {
  56                 if (frame->ping_time > 0) {
  57                         ping += frame->ping_time;
  58                         count++;
  59                 }
  60         }
  61         if (!count)
  62                 return 9999;
  63         ping /= count;
  64
  65         return ping * 1000;
  66 }
  67
  68 int main(void)
  69 {
  70    client_t cl;
  71
  72    memset(&cl, 0, sizeof(cl));
  73
  74    cl.frames[0].ping_time = 1.0f;
  75
  76    if (CalcPing(&cl) != 1000)
  77      abort();
  78
  79    return 0;
  80 }