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# ruff: noqa: F401
"""LLVM enablement tests."""

import ctypes
import math
import re

import numpy as np
import pytest

import tvm
import tvm.testing
from tvm import te, topi
from tvm.support import utils
from tvm.testing import env


@pytest.mark.skipif(not env.has_llvm(), reason="need llvm")
def test_llvm_add_pipeline():
    """all-platform-minimal-test: Check LLVM enablement."""
    nn = 128
    n = tvm.runtime.convert(nn)
    A = te.placeholder((n,), name="A")
    B = te.placeholder((n,), name="B")
    AA = te.compute((n,), lambda *i: A(*i), name="A")
    BB = te.compute((n,), lambda *i: B(*i), name="B")
    T = te.compute(A.shape, lambda *i: AA(*i) + BB(*i), name="T")
    C = te.compute(A.shape, lambda *i: T(*i), name="C")

    sch = tvm.s_tir.Schedule(te.create_prim_func([A, B, C]))
    xo, xi = sch.split(sch.get_loops("C")[0], factors=[None, 4])
    sch.parallel(xo)
    sch.vectorize(xi)

    def check_llvm():
        # BUILD and invoke the kernel.
        f = tvm.compile(sch.mod, target="llvm")
        dev = tvm.cpu(0)
        # launch the kernel.
        n = nn
        a = tvm.runtime.tensor(np.random.uniform(size=n).astype(A.dtype), dev)
        b = tvm.runtime.tensor(np.random.uniform(size=n).astype(B.dtype), dev)
        c = tvm.runtime.tensor(np.zeros(n, dtype=C.dtype), dev)
        f(a, b, c)
        tvm.testing.assert_allclose(c.numpy(), a.numpy() + b.numpy())

    check_llvm()