tqchen commented on a change in pull request #5788:
URL: https://github.com/apache/incubator-tvm/pull/5788#discussion_r439487451
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File path: src/arith/rewrite_simplify.cc
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@@ -123,7 +123,7 @@ PrimExpr RewriteSimplifier::Impl::VisitExpr_(const AddNode*
op) {
// Pattern var to match any expression
PVar<PrimExpr> x, y, z, b1, b2, s1, s2;
// Pattern var match IntImm
- PVar<IntImm> c1, c2, c3;
+ PVarOpt<Optional<IntImm>> c1, c2, c3;
Review comment:
I don't think it is right to use optional here, as the intention is to
match the variable itself
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