tqchen commented on a change in pull request #4684: [Arith] add ShapeVar
representing non-neg valued variable in a tensor shape
URL: https://github.com/apache/incubator-tvm/pull/4684#discussion_r366473075
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File path: include/tvm/expr.h
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@@ -115,6 +117,45 @@ class Var : public PrimExpr {
using ContainerType = VarNode;
};
+class ShapeVar;
+/*!
+ * \brief A variable node represent a tensor shape size,
+ * whose value must be non-negative.
+ */
+class ShapeVarNode : public VarNode {
+ public:
+ /*! \brief constructor */
+ ShapeVarNode() {}
+ ShapeVarNode(DataType dtype, std::string name_hint);
+
+ static constexpr const char* _type_key = "ShapeVar";
+ TVM_DECLARE_FINAL_OBJECT_INFO(ShapeVarNode, VarNode);
+};
+
+/*! \brief a named variable represents a tensor shape size */
+class ShapeVar : public Var {
+ public:
+ explicit ShapeVar(ObjectPtr<Object> n) : Var(n) {}
+ TVM_DLL explicit ShapeVar(std::string name_hint = "s",
Review comment:
Document the constructor
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