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-rw-r--r--ethosu/vela/pass_packing.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/ethosu/vela/pass_packing.py b/ethosu/vela/pass_packing.py
index 35e1b143..5673c2df 100644
--- a/ethosu/vela/pass_packing.py
+++ b/ethosu/vela/pass_packing.py
@@ -276,7 +276,7 @@ def pack_into_passes(nng, arch, verbose_packing=False):
):
assert len(curr_op.inputs) >= 1
ifm_tensor = curr_op.ifm
- assert ifm_tensor is not None
+ assert ifm_tensor is not None, "IFM missing in {}".format(curr_op)
assert ifm_tensor.purpose == TensorPurpose.FeatureMap
if flags_to_set & PassFlags.Dma: