[PATCH] D48102: Improve handling of COPY instructions with identical value numbers

[Tim Renouf via Phabricator via llvm-commits]

tpr added inline comments.


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Comment at: lib/CodeGen/RegisterCoalescer.cpp:2849
+          assert(Id != S.end());
+          LIS->extendToIndices(S, {Id->end, Q.endPoint()});
+        }
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Why don't we need to extend to all the uses of the value we've just pruned?


Repository:
  rL LLVM

https://reviews.llvm.org/D48102