tests/python/tirx-analysis/test_tir_analysis_verify_ssa.py

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


def test_verify_ssa():
    x = tvm.tirx.Var("x", "int32")
    y = tvm.tirx.Var("tindex", "int32")
    z = tvm.tirx.Evaluate(x + y)
    assert tvm.tirx.analysis.verify_ssa(tvm.tirx.PrimFunc([x, y], z))

    assert not tvm.tirx.analysis.verify_ssa(
        tvm.tirx.PrimFunc([x, y], tvm.tirx.SeqStmt([tvm.tirx.Bind(x, 1), z]))
    )


def test_verify_weak_let_ssa():
    x = tvm.tirx.Var("x", "int32")
    z1 = tvm.tirx.Let(x, 1, x + 1)
    z2 = tvm.tirx.Let(x, 2, x + 2)

    assert tvm.tirx.analysis.verify_ssa(tvm.tirx.PrimFunc([], tvm.tirx.Evaluate(z1 + z1)))
    assert not tvm.tirx.analysis.verify_ssa(tvm.tirx.PrimFunc([], tvm.tirx.Evaluate(z1 * z2)))


if __name__ == "__main__":
    test_verify_ssa()
    test_verify_weak_let_ssa()