[PATCH] D156491: [RA] Split a virtual register in cold blocks if it is not assigned preferred physical register

[Quentin Colombet via Phabricator via llvm-commits]

qcolombet requested changes to this revision.
qcolombet added inline comments.
This revision now requires changes to proceed.


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Comment at: llvm/lib/CodeGen/RegAllocGreedy.cpp:2404
+  if (!NewVRegs.empty())
+    return 0;
 
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Splitting decisions are supposed to be taken later (`trySplit`), this breaks the general algorithm's flow.


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  https://reviews.llvm.org/D156491/new/

https://reviews.llvm.org/D156491