LeshengJin commented on code in PR #15184:
URL: https://github.com/apache/tvm/pull/15184#discussion_r1248309101
##########
python/tvm/relax/transform/legalize_ops/manipulate.py:
##########
@@ -163,3 +163,30 @@ def _scatter_elements(bb: BlockBuilder, call: Call) ->
Expr:
call.attrs.axis,
call.attrs.reduction,
)
+
+
+@register_legalize("relax.layout_transform")
+def _layout_transform(bb: BlockBuilder, call: Call) -> Expr:
+ index_map: tvm.tir.IndexMap = call.attrs.index_map
+ pad_value = call.attrs.pad_value.value
+
+ def te_layout_transform(data):
+ inverse, padding_predicate =
index_map.non_surjective_inverse(data.shape)
+ output_shape = index_map.map_shape(data.shape)
+ return te.compute(
+ output_shape,
+ lambda *idx: tvm.te.if_then_else(
Review Comment:
Yes, that's better. Added an if-else statement to check if the predicated is
needed.
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