gcc/testsuite/gcc.dg/tree-ssa/vrp89.c

   1 /* PR target/29776 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fdump-tree-vrp1" } */
   4 /* { dg-final { scan-tree-dump-not "link_error" "vrp1"} } */
   5
   6 #define A(fn, arg, min, max) \
   7   if (__builtin_##fn (arg) < min || __builtin_##fn (arg) > max) \
   8     link_error ();
   9 #define B(fn, min, max) \
  10   A (fn, a, min, max) A (fn##l, b, min, max) A (fn##ll, c, min, max)
  11 #define C(fn, min, sub) \
  12   A (fn, a, min, ((int) sizeof (a) * __CHAR_BIT__ - sub)) \
  13   A (fn##l, b, min, ((int) sizeof (b) * __CHAR_BIT__ - sub)) \
  14   A (fn##ll, c, min, ((int) sizeof (c) * __CHAR_BIT__ - sub))
  15 #define D(fn, sub1, sub2) \
  16   A (fn, a, ((int) sizeof (a) * __CHAR_BIT__ - sub1), \
  17      ((int) sizeof (a) * __CHAR_BIT__ - sub2)) \
  18   A (fn##l, b, ((int) sizeof (b) * __CHAR_BIT__ - sub1), \
  19      ((int) sizeof (b) * __CHAR_BIT__ - sub2)) \
  20   A (fn##ll, c, ((int) sizeof (c) * __CHAR_BIT__ - sub1), \
  21      ((int) sizeof (c) * __CHAR_BIT__ - sub2))
  22
  23 extern void link_error (void);
  24
  25 unsigned int d;
  26 unsigned long e;
  27 unsigned long long f;
  28
  29 void
  30 foo (unsigned int a, unsigned long b, unsigned long long c)
  31 {
  32   B (parity, 0, 1)
  33   C (ffs, 0, 0)
  34   C (popcount, 0, 0)
  35   C (clz, 0, 0)
  36   C (ctz, -1, 0)
  37   a &= 63;
  38   b &= 63;
  39   c &= 63;
  40   B (ffs, 0, 6)
  41   B (popcount, 0, 6)
  42   a += 3; b += 3; c += 3;
  43   B (ffs, 1, 7)
  44   B (popcount, 1, 7)
  45   a = 32U + (d & 1023U);
  46   b = 32UL + (e & 1023UL);
  47   c = 32ULL + (f & 1023ULL);
  48   D (clz, 11, 6)
  49   B (ctz, 0, 10)
  50 }
  51
  52 void
  53 bar (int a, long b, long long c)
  54 {
  55   C (clrsb, 0, 1)
  56 }