[Relay] remove unneeded VisitExpr (#3239)

7e648417 · 雾雨魔理沙 · Tianqi Chen · d3958e11 · 7e648417
Commit 7e648417 authored May 24, 2019 by 雾雨魔理沙 Committed by Tianqi Chen May 24, 2019
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src/relay/pass/gradient.cc
+1 -1

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--- a/src/relay/pass/gradient.cc
+++ b/src/relay/pass/gradient.cc
@@ -279,7 +279,7 @@ struct ReverseAD : ExprMutator {
        }
        std::vector<Expr> orig_args;
        for (const auto& arg : args) {
-          orig_args.push_back(GetField(VisitExpr(arg), 0));
+          orig_args.push_back(GetField(arg, 0));
        }
        Expr orig = CallNode::make(op->op, orig_args, op->attrs, op->type_args);
        Var orig_var = ll->Push(orig);