gcc/testsuite/gcc.dg/pr57662.c

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