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#include "Halide.h"
#include "HalideRuntimeOpenCL.h"
#include <stdio.h>
using namespace Halide;
using namespace Halide::Internal;
int main(int argc, char **argv) {
Target t = get_jit_target_from_environment();
if (!t.has_feature(halide_target_feature_opencl)) {
printf("[SKIP] No OpenCL target enabled.\n");
return 0;
}
const auto *interface = get_device_interface_for_device_api(DeviceAPI::OpenCL);
assert(interface->compute_capability != nullptr);
int major, minor;
int err = interface->compute_capability(nullptr, &major, &minor);
if (err != 0 || (major == 1 && minor < 2)) {
printf("[SKIP] OpenCL %d.%d is less than required 1.2.\n", major, minor);
return 0;
}
// Check dynamic allocations into Heap and Texture memory
for (auto memory_type : {MemoryType::GPUTexture, MemoryType::Heap}) {
{
// 1D stores/loads
Buffer<int> input(100);
input.fill(10);
ImageParam param(Int(32), 1, "input");
param.set(input);
param.store_in(memory_type); // check float stores
Func f("f"), g("g");
Var x("x"), xi("xi");
Var y("y");
f(x) = cast<float>(x);
g(x) = param(x) + cast<int>(f(2 * x));
g.gpu_tile(x, xi, 16);
f.compute_root().store_in(memory_type).gpu_blocks(x); // store f as integer
g.output_buffer().store_in(memory_type);
Buffer<int> out = g.realize({100});
for (int x = 0; x < 100; x++) {
int correct = 2 * x + 10;
if (out(x) != correct) {
printf("out[1D][%d](%d) = %d instead of %d\n", (int)memory_type, x, out(x), correct);
return 1;
}
}
}
{
// 2D stores/loads
Buffer<int> input(10, 10);
input.fill(10);
ImageParam param(Int(32), 2);
param.set(input);
param.store_in(memory_type); // check float stores
Func f("f"), g("g");
Var x("x"), xi("xi");
Var y("y");
f(x, y) = cast<float>(x + y);
g(x) = param(x, x) + cast<int>(f(2 * x, x));
g.gpu_tile(x, xi, 16, TailStrategy::GuardWithIf);
f.compute_root().store_in(memory_type).gpu_blocks(x, y); // store f as integer
g.store_in(memory_type);
Buffer<int> out = g.realize({10});
for (int x = 0; x < 10; x++) {
int correct = 3 * x + 10;
if (out(x) != correct) {
printf("out[2D][%d](%d) = %d instead of %d\n", (int)memory_type, x, out(x), correct);
return 1;
}
}
}
{
// 3D stores/loads
Buffer<int> input(10, 10, 10);
input.fill(10);
ImageParam param(Int(32), 3);
param.set(input);
param.store_in(memory_type); // check float stores
Func f("f"), g("g");
Var x("x"), xi("xi");
Var y("y"), z("z");
f(x, y, z) = cast<float>(x + y + z);
g(x) = param(x, x, x) + cast<int>(f(2 * x, x, x));
g.gpu_tile(x, xi, 16, TailStrategy::GuardWithIf);
f.compute_root().store_in(memory_type).gpu_blocks(x, y, z); // store f as integer
g.store_in(memory_type);
Buffer<int> out = g.realize({10});
for (int x = 0; x < 10; x++) {
int correct = 4 * x + 10;
if (out(x) != correct) {
printf("out[3D][%d](%d) = %d instead of %d\n", (int)memory_type, x, out(x), correct);
return 1;
}
}
}
{
// 1D offset
Buffer<int> input(100);
input.set_min(5);
input.fill(10);
ImageParam param(Int(32), 1);
param.set(input);
param.store_in(memory_type); // check float stores
Func f("f"), g("g");
Var x("x"), xi("xi");
Var y("y");
f(x) = cast<float>(x);
g(x) = param(x) + cast<int>(f(2 * x));
g.gpu_tile(x, xi, 16, TailStrategy::GuardWithIf);
f.compute_root().store_in(memory_type).gpu_blocks(x); // store f as integer
g.store_in(memory_type);
Buffer<int> out(10);
out.set_min(10);
g.realize(out);
out.copy_to_host();
for (int x = 10; x < 20; x++) {
int correct = 2 * x + 10;
if (out(x) != correct) {
printf("out[1D-shift][%d](%d) = %d instead of %d\n", (int)memory_type, x, out(x), correct);
return 1;
}
}
}
}
printf("Success!\n");
return 0;
}
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