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[Unity][Relax] Set Shape Function to Be Host Function #14090

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Merged
tqchen merged 1 commit into from
Feb 22, 2023
Merged

[Unity][Relax] Set Shape Function to Be Host Function #14090

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5 changes: 5 additions & 0 deletions src/relax/backend/vm/vm_shape_lower.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -531,6 +531,11 @@ class VMShapeLowerMutator
// the shape_func to indicate that this is a host function
// This could require us to attach target to the relax function here.
tir::PrimFunc shape_func(params, body, ret_type, buffer_map);
if (shape_func->attrs.GetAttr<tvm::Target>(tvm::attr::kTarget) == nullptr) {
// kTarget and kIsHostFunc are mutually exclusive
shape_func =
WithAttr<tir::PrimFunc>(std::move(shape_func), tvm::tir::attr::kIsHostFunc, Integer(1));
}
GlobalVar shape_func_var = builder_->AddFunction(shape_func, "shape_func");
builder_->Emit(Call(shape_func_var, {shape_heap_}), "_");
return to_compute.size();
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1 change: 1 addition & 0 deletions tests/python/relax/test_backend_transform_shape_lower.py
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Expand Up @@ -178,6 +178,7 @@ class Expected:
@T.prim_func
def shape_func(H: T.Buffer(T.int64(4), "int64")):
# generated compute function
T.func_attr({"tir.is_host_func": 1})
H[T.int64(sindex["k+1"])] = H[T.int64(sindex["k"])] + T.int64(1)

@R.function
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