AndrewZhaoLuo commented on code in PR #12481:
URL: https://github.com/apache/tvm/pull/12481#discussion_r948494081
##########
tests/python/unittest/test_tir_schedule_trace.py:
##########
@@ -275,5 +284,53 @@ def test_apply_json_to_schedule_1():
tvm.ir.assert_structural_equal(elementwise_inlined, sch.mod["main"])
+def _test_apply_annotation_trace_from_json(annotation: str):
+ """Test applying an annotation works without crashing.
+
+ Designed to handle some previously failing edge cases like the
+ empty string.
+ """
+ b0 = BlockRV()
+ trace = Trace(
+ insts=[
+ _make_get_block(name="B", output=b0),
+ _make_annotate(block=b0, annotation=annotation),
+ ],
+ decisions={},
+ )
+ json_obj = trace.as_json()
+ sch = tir.Schedule(elementwise, debug_mask="all")
+ Trace.apply_json_to_schedule(json_obj, sch)
+
+ @T.prim_func
+ def elementwise_expected(a: T.handle, c: T.handle) -> None:
+ A = T.match_buffer(a, (128, 128))
+ B = T.alloc_buffer((128, 128))
+ C = T.match_buffer(c, (128, 128))
+ for i, j in T.grid(128, 128):
+ with T.block("B"):
+ T.block_attr({"meta_schedule.auto_tensorize":annotation})
+ vi, vj = T.axis.remap("SS", [i, j])
+ B[vi, vj] = A[vi, vj] * 2.0
+ for i, j in T.grid(128, 128):
+ with T.block("C"):
+ vi, vj = T.axis.remap("SS", [i, j])
+ C[vi, vj] = B[vi, vj] + 1.0
+
+ tvm.ir.assert_structural_equal(elementwise_expected, sch.mod["main"])
+
+def test_apply_annotation_from_json():
+ # Something reasonable
+ _test_apply_annotation_trace_from_json("SSRSSR")
+
+ # The empty string
+ _test_apply_annotation_trace_from_json("")
+
+ # A string of two quotation marks
+ _test_apply_annotation_trace_from_json('""')
+
+ # A string of one quotation mark
+ _test_apply_annotation_trace_from_json('"')
Review Comment:
It's supposed to be evil :^).
Any single other character would work but it's still an edge case from a
black box point of unittesting.
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