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#include "Halide.h"
using namespace Halide;
int mallocs = 0;
void *my_malloc(JITUserContext *, size_t sz) {
mallocs++;
return (uint8_t *)malloc(sz);
}
void my_free(JITUserContext *, void *ptr) {
free(ptr);
}
void check(MemoryType t1, MemoryType t2, MemoryType t3) {
Var x;
// By default, small constant-sized allocations, or
// allocations that can be bounded with a small constant size,
// go on the stack. Other allocations go on the heap.
Func f1, f2, f3;
f1(x) = x;
f1.compute_root().store_in(t1);
f2(x) = x;
f2.compute_root().store_in(t2);
f3(x) = x;
f3.compute_root().store_in(t3);
Func f;
Param<bool> p;
f(x) = (f1(0) + f1(1)) + f2(select(p, 0, 2)) + f2(0) + f3(x % 1000);
p.set(true);
int expected_mallocs = ((t1 == MemoryType::Heap ? 1 : 0) +
(t2 == MemoryType::Heap ? 1 : 0) +
(t3 == MemoryType::Heap ? 1 : 0));
mallocs = 0;
f.jit_handlers().custom_malloc = my_malloc;
f.jit_handlers().custom_free = my_free;
f.realize({1024});
if (mallocs != expected_mallocs) {
std::cerr << "Wrong number of mallocs for " << t1 << ", " << t2 << ", " << t3 << "\n"
<< "Expected " << expected_mallocs << " got " << mallocs << "\n";
exit(1);
}
}
int main(int argc, char **argv) {
if (get_jit_target_from_environment().arch == Target::WebAssembly) {
printf("[SKIP] WebAssembly JIT does not support custom allocators.\n");
return 0;
}
MemoryType types[] = {MemoryType::Auto, MemoryType::Stack, MemoryType::Heap};
for (MemoryType t1 : types) {
for (MemoryType t2 : types) {
for (MemoryType t3 : types) {
check(t1, t2, t3);
}
}
}
printf("Success!\n");
return 0;
}
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