[PATCH] D28930: [NewGVN] Optimize processing as instructions don't get more trivially dead over time

[Davide Italiano via Phabricator via llvm-commits]

davide added inline comments.


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Comment at: lib/Transforms/Scalar/NewGVN.cpp:241-243
+  // This contains a mapping from Instructions to DFS numbers.
+  // The numbering starts at 1. An instruction with DFS number zero
+  // means that the instruction is dead.
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This also adds a comment explaining what these array are for (in case it wasn't entirely obvious) and the special meaning of DFS number == 0


https://reviews.llvm.org/D28930