gcc/testsuite/gcc.dg/pr48235.c

   1 /* { dg-do compile { target powerpc*-*-* ia64-*-* i?86-*-* x86_64-*-* } } */
   2 /* { dg-require-effective-target freorder } */
   3 /* { dg-options "-O -fno-guess-branch-probability -fpeel-loops -freorder-blocks-and-partition -fschedule-insns2 -fsel-sched-pipelining -fselective-scheduling2" } */
   4 struct intC
   5 {
   6   short x;
   7   short y;
   8 };
   9
  10 int size_x;
  11
  12 static inline int
  13 TileDiffXY (int x, int y)
  14 {
  15   return (y * size_x) + x;
  16 }
  17
  18 struct HangarTileTable
  19 {
  20   struct intC ti;
  21   int hangar_num;
  22 };
  23
  24 struct AirportSpec
  25 {
  26   struct HangarTileTable *depot_table;
  27   int size;
  28 };
  29
  30 void Get ();
  31 struct AirportSpec dummy;
  32
  33 static inline int
  34 GetRotatedTileFromOffset (int *a, struct intC tidc)
  35 {
  36   if (!*a)
  37     Get ();
  38   switch (*a)
  39     {
  40     case 0:
  41       return (tidc.y << size_x) + tidc.x;
  42     case 1:
  43       return TileDiffXY (tidc.y, dummy.size - tidc.x);
  44     case 2:
  45       return TileDiffXY (tidc.x, dummy.size - tidc.y);
  46     case 3:
  47       return TileDiffXY (dummy.size - 1, tidc.x);
  48     }
  49 }
  50
  51 int
  52 GetHangarNum (int *a)
  53 {
  54         int i;
  55   for (i = 0; i < dummy.size; i++)
  56     if (GetRotatedTileFromOffset (a, dummy.depot_table[i].ti))
  57       return dummy.depot_table[i].hangar_num;
  58 }