[PATCH] D149281: Must unroll epilogue loops after vectorization on AMDGPU target

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec added a comment.

Add a test?



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Comment at: llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:7783
+  TTI->getUnrollingPreferences(L, *PSE.getSE(), UP, ORE);
+  if (!UP.unrollLoopEpilogues)
+    AddRuntimeUnrollDisableMetaData(L);
----------------
Original code had `CanonicalIVStartValue` check. So to restore it this should look: `if (CanonicalIVStartValue || !UP.unrollLoopEpilogues)`.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D149281/new/

https://reviews.llvm.org/D149281