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Remove outdated comment

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This commit is contained in:
Jeffrey Seyfried 2016-05-02 00:43:02 +00:00
parent 522b6ed8a7
commit ef69ef81e3
1 changed files with 0 additions and 6 deletions
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src/librustc/hir/lowering.rs
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@ -29,12 +29,6 @@
// are unique). Every new node must have a unique id. Avoid cloning HIR nodes. // are unique). Every new node must have a unique id. Avoid cloning HIR nodes.
// If you do, you must then set the new node's id to a fresh one. // If you do, you must then set the new node's id to a fresh one.
// //
// We must also cache gensym'ed Idents to ensure that we get the same Ident
// every time we lower a node with gensym'ed names. One consequence of this is
// that you can only gensym a name once in a lowering (you don't need to worry
// about nested lowering though). That's because we cache based on the name and
// the currently cached node id, which is unique per lowered node.
//
// Spans are used for error messages and for tools to map semantics back to // Spans are used for error messages and for tools to map semantics back to
// source code. It is therefore not as important with spans as ids to be strict // source code. It is therefore not as important with spans as ids to be strict
// about use (you can't break the compiler by screwing up a span). Obviously, a // about use (you can't break the compiler by screwing up a span). Obviously, a