[PATCH] D67794: [MachineCopyPropagation] Extend MCP to do trivial copy backward propagation

[Quentin Colombet via Phabricator via llvm-commits]

qcolombet added inline comments.


================
Comment at: llvm/lib/CodeGen/MachineCopyPropagation.cpp:212
+    return AvailCopy;
+  }
+
----------------
It seems to me that we could just reuse directly findAvailCopy and thus eliminate findCopyDefViaUnit.
The only difference would be the that we use a different iterator for the. forward and the backward case.


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https://reviews.llvm.org/D67794