gcc/testsuite/gcc.c-torture/compile/20020120-1.c

   1 /* This ICEed on IA-32 with -O2 -mcpu=i386, because reload was trying
   2    to reload into %sil register.  */
   3
   4 struct A
   5 {
   6   void *a;
   7   unsigned int b, c, d;
   8 };
   9
  10 struct B
  11 {
  12   struct A *e;
  13 };
  14
  15 void bar (struct A *);
  16 void baz (struct A *);
  17
  18 static inline unsigned int
  19 inl (unsigned int v, unsigned char w, unsigned char x, unsigned char y,
  20      unsigned char z)
  21 {
  22   switch (v)
  23     {
  24     case 2:
  25       return ((w & 0xf8) << 8) | ((x & 0xfc) << 3) | ((y & 0xf8) >> 3);
  26     case 4:
  27       return (z << 24) | (w << 16) | (x << 8) | y;
  28     default:
  29       return 0;
  30     }
  31 }
  32
  33 void foo (struct B *x, int y, const float *z)
  34 {
  35   struct A *a = x->e;
  36
  37   if (y)
  38     {
  39       if (x->e->a)
  40        bar (x->e);
  41     }
  42   else
  43     {
  44       unsigned char c[4];
  45       unsigned int b;
  46
  47       c[0] = z[0]; c[1] = z[1]; c[2] = z[2]; c[3] = z[3];
  48       b = inl (a->b, c[0], c[1], c[2], c[3] );
  49       if (a->a)
  50        bar (a);
  51       else
  52        baz (a);
  53       a->c = b;
  54    }
  55 }