[TIR] Support make shape and array at root scope #15709
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The change wants to allow using
stack_make_shape
andstack_make_array
out of call packed function. A context manager object is introduced to maintain stakc sizes and avoid some duplicate codes.With the change, if the user has some C function with DLTensor* arguments, it could be invoked through
T.call_extern
with stack constructed shape and array info.