Menooker commented on a change in pull request #5357:
URL: https://github.com/apache/incubator-tvm/pull/5357#discussion_r415204685
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File path: src/relay/transforms/fold_scale_axis.cc
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@@ -518,13 +564,30 @@ Expr Conv2DForwardRewrite(const Call& ref_call,
// match the ic_axis
if (is_depthwise_conv2d) {
- Expr scale = ExpandBiasToMatchAxis(
- sdata->scale, kernel_layout.ndim(), {big_oc_axis});
- weight = Multiply(weight, scale);
+ if (is_simple) {
+ Expr scale = ExpandBiasToMatchAxis(
+ sdata->scale, kernel_layout.ndim(), {big_ko_axis});
+ weight = Multiply(weight, scale);
+ } else {
+ weight = Multiply(weight, ReshapeToMatchAxis(sdata->scale,
+ weight->type_as<TensorTypeNode>()->shape,
+ {big_ko_axis, small_ko_axis}));
+ if (!weight.defined())
+ return Expr();
Review comment:
I can see in line 542 and 543 in the same function:
```
if (sdata == nullptr) return Expr();
if (sweight != nullptr) return Expr();
```
Looks like returning `Expr()` just mean that the optimization fails?
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