yzh119 commented on code in PR #14184:
URL: https://github.com/apache/tvm/pull/14184#discussion_r1127682660
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src/arith/iter_affine_map.cc:
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@@ -2147,7 +2147,8 @@ class InverseAffineIterMapTransformer {
// Case 1: Propagate to the input node directly when the sum expression
has only one components
if (iter_map_expr->args.size() == 1) {
const auto& source = iter_map_expr->args[0];
- backprop_.Set(source, backprop_.at(source) + input);
+ ICHECK(analyzer_->CanProveEqual(abs(source->scale), 1));
Review Comment:
what's the necessity of using `abs` here?
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