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#include "Halide.h"
#include <stdio.h>
using namespace Halide;
int main(int argc, char **argv) {
Target target = get_jit_target_from_environment();
// We want to test all possible data flows for a buffer:
// input -> host
// input -> dev
// host -> host
// host -> dev
// dev -> host
// dev -> dev
// dev -> output
// host -> output
// We can't really test the last two in the same routine, so we'll
// run two routines.
{
// Pipeline 1 will do input -> host -> dev -> host -> output
ImageParam in(Int(32), 1);
Func f, g, out;
Var x, xi;
f(x) = in(x) + 1;
g(x) = f(x) * 2;
out(x) = g(x) + 3;
f.compute_root();
if (target.has_gpu_feature()) {
g.compute_root().gpu_tile(x, xi, 16);
} else if (target.has_feature(Target::HVX)) {
g.compute_root().hexagon();
}
out.compute_root();
Buffer<int> input(1024);
lambda(x, x * 17 + 83).realize(input);
in.set(input);
Buffer<int> output1(1024);
out.realize(output1);
output1.copy_to_host();
for (int x = 0; x < 1024; x++) {
int correct = (input(x) + 1) * 2 + 3;
if (output1(x) != correct) {
printf("output1(%d) = %d instead of %d\n", x, output1(x), correct);
return 1;
}
}
}
{
// Pipeline 2 will do input -> dev -> dev -> output
ImageParam in(Int(32), 1);
Func f, out;
Var x, xi;
f(x) = in(x) + 1;
out(x) = f(x) * 2;
if (target.has_gpu_feature()) {
f.compute_root().gpu_tile(x, xi, 16);
out.compute_root().gpu_tile(x, xi, 16);
} else if (target.has_feature(Target::HVX)) {
f.compute_root().hexagon();
out.compute_root().hexagon();
}
Buffer<int> input(1024);
lambda(x, x * 17 + 83).realize(input);
in.set(input);
Buffer<int> output2(1024);
out.realize(output2);
output2.copy_to_host();
for (int x = 0; x < 1024; x++) {
int correct = (input(x) + 1) * 2;
if (output2(x) != correct) {
printf("output2(%d) = %d instead of %d\n", x, output2(x), correct);
return 1;
}
}
}
printf("Success!\n");
return 0;
}
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