[PATCH] D72713: [ARM][LowOverheadLoops] Check loop liveouts

[Yvan Roux via Phabricator via llvm-commits]

yroux added a comment.

Hi Sam,

just a comment inlined



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Comment at: llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp:642
+    else if (MO.isDef() && isRegLiveInExitBlocks(&ML, MO.getReg()))
+      LiveOuts.push_back(MO.getReg());
+  }
----------------
Why not returning false here instead of populating a SmallVector and checking for its emptiness later ?


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https://reviews.llvm.org/D72713