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#include "Halide.h"
#include <iostream>
#include <stdio.h>
using namespace Halide;
int main(int argc, char **argv) {
{
// Ensure we can re-split a fused RVar with a different factor.
Var x("x"), y("y");
Func f("f");
f(x) = x;
Func g;
g(x, y) = undef<int>();
RDom r(0, 4, 0, 4);
g(r.x, r.y) = f(r.y * 4 + r.x);
RVar rxy, rxyo, rxyi;
g.update(0).fuse(r.x, r.y, rxy).split(rxy, rxyo, rxyi, 2);
Buffer<int> Rg = g.realize({4, 4});
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) {
int expected = i * 4 + j;
if (Rg(j, i) != expected) {
printf("Error! Expected %d at g(%d, %d), got %d\n", expected, j, i, Rg(j, i));
return 1;
}
}
}
}
{
// Ensure we can re-fuse a split RVar with a different factor.
Var x("x");
Func f("f");
f(x) = x;
Func g;
g(x) = undef<int>();
RDom r(0, 16);
g(r) = f(r);
RVar ro, ri, roi;
g.update(0).split(r, ro, ri, 2).fuse(ro, ri, roi);
Buffer<int> Rg = g.realize({16});
for (int i = 0; i < 16; i++) {
if (Rg(i) != i) {
printf("Error! Expected %d at g(%d), got %d\n", i, i, Rg(i));
return 1;
}
}
}
printf("Success!\n");
return 0;
}
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