Lunderberg commented on code in PR #16602:
URL: https://github.com/apache/tvm/pull/16602#discussion_r1497771370
##########
python/tvm/relax/transform/lazy_transform_params.py:
##########
@@ -157,24 +159,60 @@ def transform(self, func: relax.Function) ->
relax.Function:
self.memory_free_insertion = liveness.var_liveness_end
# Step 3. rewrite get item and set item
- new_body = func.body
if self.fget_item is not None:
- new_body = LazyInputMutator(self, self.mod).visit_expr(new_body)
+ new_func = LazyInputMutator(self, self.mod).visit_expr(func)
+ new_body = new_func.body
if self.fset_item is not None:
+ leaf_outputs = {
+ expr: indices
+ for expr, indices in self.out_tuple_map.items()
+ if not isinstance(expr, relax.Var)
+ }
+ if leaf_outputs:
+ new_bindings = [
+ relax.VarBinding(
+ relax.Var("_", relax.ObjectStructInfo()),
+ relax.Call(
+ relax.ExternFunc(self.fset_item),
+ [*self.extra_set_item_params, index, expr],
+ None,
+ [relax.ObjectStructInfo()],
+ ),
+ )
+ for expr, indices in leaf_outputs.items()
+ for index in indices
+ ]
+ new_body = relax.SeqExpr(
+ [*new_body.blocks, relax.BindingBlock(new_bindings)],
new_body.body
+ )
+
Review Comment:
That's correct. Otherwise, a `R.const(...)` that occurs within the output
tuple wouldn't produce a call to the `fset_item` function. I've added a
comment to clarify.
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