gcc/testsuite/gcc.dg/pr97459-4.c

   1 /* PR rtl-optimization/97459 */
   2 /* { dg-do run } */
   3 /* { dg-options "-O2" } */
   4 /* { dg-additional-options "-DEXPENSIVE" { target run_expensive_tests } } */
   5
   6 #ifdef __SIZEOF_INT128__
   7 typedef __int128_t T;
   8 typedef __uint128_t U;
   9 #else
  10 typedef long long T;
  11 typedef unsigned long long U;
  12 #endif
  13
  14 T __attribute__((noipa)) foo (T x, T n) { return x / n; }
  15 #define C(n) T __attribute__((noipa)) foo##n (T x) { return x / (n - 10000); }
  16
  17 #define C1(n) C(n##1) C(n##3) C(n##5) C(n##7) C(n##9)
  18 #define C2(n) C1(n##0) C1(n##1) C1(n##2) C1(n##3) C1(n##4) \
  19               C1(n##5) C1(n##6) C1(n##7) C1(n##8) C1(n##9)
  20 #ifdef EXPENSIVE
  21 #define C3(n) C2(n##0) C2(n##1) C2(n##2) C2(n##3) C2(n##4) \
  22               C2(n##5) C2(n##6) C2(n##7) C2(n##8) C2(n##9)
  23 #define C4(n) C3(n##0) C3(n##1) C3(n##2) C3(n##3) C3(n##4) \
  24               C3(n##5) C3(n##6) C3(n##7) C3(n##8) C3(n##9)
  25 #else
  26 #define C3(n) C2(n##0) C2(n##4) C2(n##9)
  27 #define C4(n) C3(n##0) C3(n##3) C3(n##7)
  28 #endif
  29 #define TESTS C4(1) C1(10010) C1(10012) C1(16144)
  30
  31 TESTS
  32
  33 struct S { T x; T (*foo) (T); };
  34
  35 #undef C
  36 #define C(n) { n - 10000, foo##n },
  37
  38 struct S tests[] = {
  39 TESTS
  40   { 0, 0 }
  41 };
  42
  43 int
  44 main ()
  45 {
  46   int i, j, k;
  47   for (k = 0; tests[k].x; k++)
  48     for (i = 0; i < sizeof (T) * __CHAR_BIT__; i++)
  49       for (j = -5; j <= 5; j++)
  50         {
  51           U x = ((U) 1 << i) + j;
  52           if (foo ((T) x, tests[k].x) != tests[k].foo ((T) x)
  53               || foo ((T) -x, tests[k].x) != tests[k].foo ((T) -x))
  54             __builtin_abort ();
  55         }
  56   return 0;
  57 }