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/* Make sure a -0 stays -0 when we perform a conditional reduction. */
/* { dg-require-effective-target vect_double } */
/* { dg-add-options ieee } */
/* { dg-additional-options "-std=gnu99 -fno-fast-math" } */
#include "tree-vect.h"
#include <math.h>
#define N (VECTOR_BITS * 17)
double __attribute__ ((noinline, noclone))
reduc_plus_double (double *restrict a, double init, int *cond, int n)
{
double res = init;
for (int i = 0; i < n; i++)
if (cond[i])
res += a[i];
return res;
}
double __attribute__ ((noinline, noclone, optimize ("0")))
reduc_plus_double_ref (double *restrict a, double init, int *cond, int n)
{
double res = init;
for (int i = 0; i < n; i++)
if (cond[i])
res += a[i];
return res;
}
double __attribute__ ((noinline, noclone))
reduc_minus_double (double *restrict a, double init, int *cond, int n)
{
double res = init;
for (int i = 0; i < n; i++)
if (cond[i])
res -= a[i];
return res;
}
double __attribute__ ((noinline, noclone, optimize ("0")))
reduc_minus_double_ref (double *restrict a, double init, int *cond, int n)
{
double res = init;
for (int i = 0; i < n; i++)
if (cond[i])
res -= a[i];
return res;
}
int __attribute__ ((optimize (1)))
main ()
{
int n = 19;
double a[N];
int cond1[N], cond2[N];
for (int i = 0; i < N; i++)
{
a[i] = (i * 0.1) * (i & 1 ? 1 : -1);
cond1[i] = 0;
cond2[i] = i & 4 ? 1 : 0;
asm volatile ("" ::: "memory");
}
double res1 = reduc_plus_double (a, -0.0, cond1, n);
double ref1 = reduc_plus_double_ref (a, -0.0, cond1, n);
double res2 = reduc_minus_double (a, -0.0, cond1, n);
double ref2 = reduc_minus_double_ref (a, -0.0, cond1, n);
double res3 = reduc_plus_double (a, -0.0, cond1, n);
double ref3 = reduc_plus_double_ref (a, -0.0, cond1, n);
double res4 = reduc_minus_double (a, -0.0, cond1, n);
double ref4 = reduc_minus_double_ref (a, -0.0, cond1, n);
if (res1 != ref1 || signbit (res1) != signbit (ref1))
__builtin_abort ();
if (res2 != ref2 || signbit (res2) != signbit (ref2))
__builtin_abort ();
if (res3 != ref3 || signbit (res3) != signbit (ref3))
__builtin_abort ();
if (res4 != ref4 || signbit (res4) != signbit (ref4))
__builtin_abort ();
res1 = reduc_plus_double (a, 0.0, cond1, n);
ref1 = reduc_plus_double_ref (a, 0.0, cond1, n);
res2 = reduc_minus_double (a, 0.0, cond1, n);
ref2 = reduc_minus_double_ref (a, 0.0, cond1, n);
res3 = reduc_plus_double (a, 0.0, cond1, n);
ref3 = reduc_plus_double_ref (a, 0.0, cond1, n);
res4 = reduc_minus_double (a, 0.0, cond1, n);
ref4 = reduc_minus_double_ref (a, 0.0, cond1, n);
if (res1 != ref1 || signbit (res1) != signbit (ref1))
__builtin_abort ();
if (res2 != ref2 || signbit (res2) != signbit (ref2))
__builtin_abort ();
if (res3 != ref3 || signbit (res3) != signbit (ref3))
__builtin_abort ();
if (res4 != ref4 || signbit (res4) != signbit (ref4))
__builtin_abort ();
res1 = reduc_plus_double (a, -0.0, cond2, n);
ref1 = reduc_plus_double_ref (a, -0.0, cond2, n);
res2 = reduc_minus_double (a, -0.0, cond2, n);
ref2 = reduc_minus_double_ref (a, -0.0, cond2, n);
res3 = reduc_plus_double (a, -0.0, cond2, n);
ref3 = reduc_plus_double_ref (a, -0.0, cond2, n);
res4 = reduc_minus_double (a, -0.0, cond2, n);
ref4 = reduc_minus_double_ref (a, -0.0, cond2, n);
if (res1 != ref1 || signbit (res1) != signbit (ref1))
__builtin_abort ();
if (res2 != ref2 || signbit (res2) != signbit (ref2))
__builtin_abort ();
if (res3 != ref3 || signbit (res3) != signbit (ref3))
__builtin_abort ();
if (res4 != ref4 || signbit (res4) != signbit (ref4))
__builtin_abort ();
res1 = reduc_plus_double (a, 0.0, cond2, n);
ref1 = reduc_plus_double_ref (a, 0.0, cond2, n);
res2 = reduc_minus_double (a, 0.0, cond2, n);
ref2 = reduc_minus_double_ref (a, 0.0, cond2, n);
res3 = reduc_plus_double (a, 0.0, cond2, n);
ref3 = reduc_plus_double_ref (a, 0.0, cond2, n);
res4 = reduc_minus_double (a, 0.0, cond2, n);
ref4 = reduc_minus_double_ref (a, 0.0, cond2, n);
if (res1 != ref1 || signbit (res1) != signbit (ref1))
__builtin_abort ();
if (res2 != ref2 || signbit (res2) != signbit (ref2))
__builtin_abort ();
if (res3 != ref3 || signbit (res3) != signbit (ref3))
__builtin_abort ();
if (res4 != ref4 || signbit (res4) != signbit (ref4))
__builtin_abort ();
return 0;
}
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