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"""Trainium-specific TIRX transformations."""
# pylint: disable=invalid-name

from tvm_ffi import get_global_func

import tvm
from tvm import tirx

_LAZY_TRANSFORMS = {
    "TrnNaiveAllocator": ".naive_allocator",
    "TrnPrivateBufferAlloc": ".private_buffer_alloc",
}


def LowerTrainiumLayout():
    """Lower Trainium layouts to backend physical buffer shapes and indices."""
    return get_global_func("tirx.backend.trn.transform.LowerTrainiumLayout")()


def LowerTIRx():
    """Lower TIRx tile primitive calls for the Trainium backend."""
    return tvm.ir.transform.Sequential(
        [tirx.transform.TilePrimitiveDispatch(), LowerTrainiumLayout()],
        name="tirx.backend.trn.LowerTIRx",
    )


def __getattr__(name):
    target = _LAZY_TRANSFORMS.get(name)
    if target is None:
        raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
    from importlib import import_module  # pylint: disable=import-outside-toplevel

    return getattr(import_module(target, __name__), name)


__all__ = ["LowerTIRx", "LowerTrainiumLayout", "TrnNaiveAllocator", "TrnPrivateBufferAlloc"]