Viewing file:  parloops-exit-first-loop-alt.c (1.24 KB) -rw-r--r--
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/* { dg-do run } */
/* { dg-additional-options "-ftree-parallelize-loops=2" } */
/* Variable bound, vector addition, signed loop counter, unsigned bound. */
#include <stdio.h>
#include <stdlib.h>
#define N 1000
unsigned int a[N];
unsigned int b[N];
unsigned int c[N];
void __attribute__((noclone,noinline))
f (unsigned int n, unsigned int *__restrict__ a, unsigned int *__restrict__ b,
unsigned int *__restrict__ c)
{
int i;
for (i = 0; i < n; ++i)
c[i] = a[i] + b[i];
}
static void __attribute__((noclone,noinline))
init (void)
{
int i, j;
/* Complexify loop to inhibit parloops. */
for (j = 0; j < 100; ++j)
for (i = 0; i < 10; i++)
{
int k = i + (10 * j);
a[k] = k;
b[k] = (k * 3) % 7;
c[k] = k * 2;
}
}
int
main (void)
{
int i;
init ();
f (N, a, b, c);
for (i = 0; i < N; i++)
{
unsigned int actual = c[i];
unsigned int expected = i + ((i * 3) % 7);
if (actual != expected)
abort ();
}
/* Test low iteration count case. */
init ();
f (10, a, b, c);
for (i = 0; i < N; i++)
{
unsigned int actual = c[i];
unsigned int expected = (i < 10
? i + ((i * 3) % 7)
: i * 2);
if (actual != expected)
abort ();
}
return 0;
}
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