chore: import upstream snapshot with attribution

tests/python/arith/test_arith_detect_clip_bound.py

@@ -0,0 +1,55 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+import tvm
+import tvm.testing
+
+
+def test_basic():
+    a = tvm.tirx.Var("a", "int32")
+    b = tvm.tirx.Var("b", "int32")
+    c = tvm.tirx.Var("c", "int32")
+    m = tvm.arith.detect_clip_bound(tvm.tirx.all(a * 1 < b * 6, a - 1 > 0), [a])
+    tvm.testing.assert_prim_expr_equal(m[1], b * 6 - 1)
+    assert m[0].value == 2
+    m = tvm.arith.detect_clip_bound(tvm.tirx.all(a * 1 < b * 6, a - 1 > 0), [a, b])
+    assert len(m) == 0
+    m = tvm.arith.detect_clip_bound(tvm.tirx.all(a + 10 * c <= 20, b - 1 > 0), [a, b])
+    tvm.testing.assert_prim_expr_equal(m[1], 20 - 10 * c)
+    tvm.testing.assert_prim_expr_equal(m[2], 2)
+    m = tvm.arith.detect_clip_bound(tvm.tirx.all(tvm.tirx.Not(a * 1 > b * 6), a - 1 > 0), [a])
+    tvm.testing.assert_prim_expr_equal(m[1], b * 6)
+    m = tvm.arith.detect_clip_bound(tvm.tirx.all(tvm.tirx.Min(a, b) > 3, a - 10 < 0), [a, b])
+    tvm.testing.assert_prim_expr_equal(m[0], 4)
+    tvm.testing.assert_prim_expr_equal(m[1], 9)
+    tvm.testing.assert_prim_expr_equal(m[2], 4)
+
+
+def test_trivial_eq():
+    a = tvm.tirx.Var("a", "int32")
+    b = tvm.tirx.Var("b", "int32")
+    m = tvm.arith.detect_clip_bound(b == 3, [a, b])
+    tvm.testing.assert_prim_expr_equal(m[2], 3)
+    tvm.testing.assert_prim_expr_equal(m[3], 3)
+    m = tvm.arith.detect_clip_bound(tvm.tirx.all(a == 4, b == 3), [a, b])
+    tvm.testing.assert_prim_expr_equal(m[0], 4)
+    tvm.testing.assert_prim_expr_equal(m[1], 4)
+    tvm.testing.assert_prim_expr_equal(m[2], 3)
+    tvm.testing.assert_prim_expr_equal(m[3], 3)
+
+
+if __name__ == "__main__":
+    test_basic()