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#include "Halide.h"
#include <stdio.h>
using namespace Halide;
int main(int argc, char **argv) {
Var x, y;
Var xo, xi, yo, yi;
Func f, g;
printf("Defining function...\n");
f(x, y) = cast<int>(x);
g(x, y) = f(x + 1, y) + f(x - 1, y);
Target target = get_jit_target_from_environment();
if (target.has_gpu_feature()) {
Var xo, yo, xi, yi;
g.gpu_tile(x, y, xo, yo, xi, yi, 8, 8);
f.compute_at(g, xo).gpu_threads(x, y).store_in(MemoryType::GPUShared);
}
printf("Realizing function...\n");
Buffer<int> im = g.realize({32, 32}, target);
for (int i = 0; i < 32; i++) {
for (int j = 0; j < 32; j++) {
if (im(i, j) != 2 * i) {
printf("im[%d, %d] = %d (expected %d)\n", i, j, im(i, j), 2 * i);
return 1;
}
}
}
printf("Success!\n");
return 0;
}
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