masahi commented on a change in pull request #9207:
URL: https://github.com/apache/tvm/pull/9207#discussion_r723651665
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File path: python/tvm/relay/op/strategy/generic.py
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@@ -715,8 +715,14 @@ def dilation2d_strategy(attrs, inputs, out_type, target):
return strategy
+def maybe_copy_tensor_b(tensor_a, tensor_b):
+ if tensor_a == tensor_b:
+ return te.compute(tensor_a.shape, lambda *ind: tensor_a[ind],
tag="tensor_b_copy")
+ return tensor_b
+
+
# matmul
-def wrap_compute_matmul(topi_compute, need_auto_scheduler_layout=False):
+def wrap_compute_matmul(topi_compute, need_auto_scheduler_layout=False,
need_tensor_b_copy=True):
Review comment:
This is flag is introduced solely for external libs like cublas, which
doesn't need copying if two args are the same. I explicitly set
`need_tensor_b_copy=False` for cublas strategy only, otherwise we do the copy
by default.
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