t-vi commented on a change in pull request #5946:
URL: https://github.com/apache/incubator-tvm/pull/5946#discussion_r447259517
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File path: src/relay/transforms/gradient.cc
##########
@@ -106,14 +106,67 @@ struct ADValueNode {
}
};
+Expr MultiZerosType(const Type& t) {
+ if (auto* tt = t.as<TensorTypeNode>()) {
+ return Zeros(tt->shape, tt->dtype);
+ } else if (auto* tt = t.as<TupleTypeNode>()) {
+ std::vector<Expr> res;
+ for (size_t i = 0; i < tt->fields.size(); i++) {
+ res.push_back(MultiZerosType(tt->fields[i]));
+ }
+ return Tuple(res);
+ } else {
+ LOG(FATAL) << "unsupported type to zero: " << tt;
+ throw;
+ }
+}
+
+Expr MultiZerosLike(const Expr& e, const Type& t) {
+ if (t.as<TensorTypeNode>()) {
+ return ZerosLike(e);
+ } else if (auto* tt = t.as<TupleTypeNode>()) {
+ return MultiZerosType(t);
+ } else {
+ LOG(FATAL) << "unsupported type to create zeros: " << tt;
+ throw;
+ }
+}
+
+Expr MultiOnesType(const Type& t) {
+ if (auto* tt = t.as<TensorTypeNode>()) {
+ return Ones(tt->shape, tt->dtype);
+ } else if (auto* tt = t.as<TupleTypeNode>()) {
+ std::vector<Expr> res;
+ for (size_t i = 0; i < tt->fields.size(); i++) {
+ res.push_back(MultiOnesType(tt->fields[i]));
+ }
+ return Tuple(res);
+ } else {
+ LOG(FATAL) << "unsupported type to zero: " << tt;
Review comment:
This goes away with the unification...
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