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#
#   http://www.apache.org/licenses/LICENSE-2.0
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import pytest
import tvm
from tvm import te

@pytest.mark.xfail
def test_loop_dependent_allocate():
    N = te.size_var("N")
    A = te.placeholder((2*N,), "float32", "A")
    C = te.compute((N, ), lambda i: A[2*i] + A[i+1], name='C')
    s = te.create_schedule(C.op)
    AA = s.cache_read(A, "local", [C])
    s[AA].compute_at(s[C], s[C].op.axis[0])
    # this line should fail due to IRUseDefAnalysis sees an allocate statement
    # referencing undefined variable
    tvm.lower(s, [A, C])

if __name__ == "__main__":
    test_loop_dependent_allocate()
