[PATCH] D57779: [SLP] Add support for throttling.

[Dinar Temirbulatov via Phabricator via llvm-commits]

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


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Comment at: lib/Transforms/Vectorize/SLPVectorizer.cpp:645
+  /// Save seed instructions to try partially vectorize later.
+  void recordSeeds(ArrayRef<Value *> Ops);
+
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vporpo wrote:
> Why are we collecting the seeds specifically for partial vectorization? Is this really needed? Why don't you just call tryPartialVectorization(Seeds) within vectorizeStorChain() etc. ?
Ok, Imagine that we could do partial vectorization with vector size 4 for 30% of the tree, but for the same tree, we could have full vectorization with vector size 2. I think that it would be serious regression if we could do it with just 30%. Or for example, for the same tree, we could do reduction later for the whole tree.


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https://reviews.llvm.org/D57779