gcc/testsuite/gcc.dg/pr48616.c

   1 /* PR tree-optimization/48616 */
   2 /* { dg-do run } */
   3 /* { dg-options "-O2 -ftree-vectorize" } */
   4 /* { dg-additional-options "-fno-common" { target hppa*-*-hpux* } } */
   5
   6 extern void abort (void);
   7 int a[4] __attribute__((aligned (32)));
   8 int b[4] __attribute__((aligned (32)));
   9 int c[4] __attribute__((aligned (32)));
  10 int d[4] __attribute__((aligned (32)));
  11 int e[4] __attribute__((aligned (32)));
  12
  13 __attribute__((noinline, noclone))
  14 int
  15 foo (int x)
  16 {
  17   asm ("" : "+r" (x));
  18   return x;
  19 }
  20
  21 __attribute__((noinline, noclone))
  22 void
  23 fn1 (int i)
  24 {
  25   a[0] = b[0] << c[0];
  26   a[1] = b[1] << c[1];
  27   a[2] = b[2] << c[2];
  28   a[3] = b[3] << c[3];
  29   if (i)
  30     {
  31       d[0] = e[0] >> c[0];
  32       d[1] = e[1] >> c[1];
  33       d[2] = e[2] >> c[2];
  34       d[3] = e[3] >> c[3];
  35     }
  36 }
  37
  38 __attribute__((noinline, noclone))
  39 void
  40 fn2 (int i)
  41 {
  42   a[0] = b[0] << 1;
  43   a[1] = b[1] << 2;
  44   a[2] = b[2] << 3;
  45   a[3] = b[3] << 4;
  46   if (i)
  47     {
  48       d[0] = e[0] >> 1;
  49       d[1] = e[1] >> 2;
  50       d[2] = e[2] >> 3;
  51       d[3] = e[3] >> 4;
  52     }
  53 }
  54
  55 __attribute__((noinline, noclone))
  56 void
  57 fn3 (int i, int j)
  58 {
  59   int x = foo (j);
  60   a[0] = b[0] << x;
  61   a[1] = b[1] << x;
  62   a[2] = b[2] << x;
  63   a[3] = b[3] << x;
  64   if (i)
  65     {
  66       d[0] = e[0] >> x;
  67       d[1] = e[1] >> x;
  68       d[2] = e[2] >> x;
  69       d[3] = e[3] >> x;
  70     }
  71 }
  72
  73 __attribute__((noinline, noclone))
  74 void
  75 fn4 (int i)
  76 {
  77   a[0] = b[0] << 1;
  78   a[1] = b[1] << 1;
  79   a[2] = b[2] << 1;
  80   a[3] = b[3] << 1;
  81   if (i)
  82     {
  83       d[0] = e[0] >> 1;
  84       d[1] = e[1] >> 1;
  85       d[2] = e[2] >> 1;
  86       d[3] = e[3] >> 1;
  87     }
  88 }
  89
  90 int
  91 main ()
  92 {
  93   int i;
  94   int *t;
  95   for (i = 0; i < 4; i++)
  96     {
  97       b[i] = 32;
  98       c[i] = i + 1;
  99       e[i] = 32;
 100     }
 101   asm volatile ("" : : "r" (b) : "memory");
 102   asm volatile ("" : : "r" (c) : "memory");
 103   asm volatile ("" : "=r" (t) : "0" (d) : "memory");
 104   fn1 (t != 0);
 105   for (i = 0; i < 4; i++)
 106     {
 107       if (a[i] != (32 << (i + 1)) || d[i] != (32 >> (i + 1)))
 108         abort ();
 109       a[i] = 0;
 110       d[i] = 0;
 111     }
 112   fn2 (t != 0);
 113   for (i = 0; i < 4; i++)
 114     {
 115       if (a[i] != (32 << (i + 1)) || d[i] != (32 >> (i + 1)))
 116         abort ();
 117       a[i] = 0;
 118       d[i] = 0;
 119     }
 120   fn3 (t != 0, t != 0);
 121   for (i = 0; i < 4; i++)
 122     {
 123       if (a[i] != (32 << 1) || d[i] != (32 >> 1))
 124         abort ();
 125       a[i] = 0;
 126       d[i] = 0;
 127     }
 128   fn4 (t != 0);
 129   for (i = 0; i < 4; i++)
 130     {
 131       if (a[i] != (32 << 1) || d[i] != (32 >> 1))
 132         abort ();
 133     }
 134   return 0;
 135 }