[PATCH] D115278: Check subrange liveness at rematerialization

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec marked an inline comment as done.
rampitec added inline comments.


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Comment at: llvm/lib/CodeGen/LiveRangeEdit.cpp:146-148
+        LM &= ~SR.LaneMask;
+        if (LM.none())
+          break;
----------------
arsenm wrote:
> This isn't required?
This is early exit. No need to continue iterating over the rest of the subranges if we have already checked all lanes we need. In case of wide register tuples this shall be faster.


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  https://reviews.llvm.org/D115278/new/

https://reviews.llvm.org/D115278