Lunderberg commented on issue #12852:
URL: https://github.com/apache/tvm/issues/12852#issuecomment-1253808768
I can reproduce the error, and made a simplified test script below. Playing
around a bit with the shape, it looks like it only occurs when there's a
dimension of size 1.
```python
#!/usr/bin/env python3
import tvm
import tvm.testing
from tvm.script import tir as T
shape = tvm.testing.parameter(
(1, 1, 256, 512),
(1, 2, 256, 512),
(2, 1, 256, 512),
(2, 2, 256, 512),
)
def test_rewrite_layout(shape):
n, c, h, w = shape
@tvm.script.ir_module
class mod:
@T.prim_func
def main(a: T.handle):
A = T.match_buffer(a, shape, "float32")
T.func_attr({"layout_free_buffers": [0]})
for ax0, ax1, ax2, ax3 in T.grid(n, c, h, w):
with T.block():
v0, v1, v2, v3 = T.axis.remap("SSSS", [ax0, ax1, ax2,
ax3])
T.evaluate(A[v0, v1, v2, v3])
sch = tvm.tir.Schedule(mod)
tvm.meta_schedule.postproc.RewriteLayout().apply(sch)
if __name__ == "__main__":
tvm.testing.main()
```
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