[PATCH] D156158: [LAA] Rename and fix semantics of MaxSafeDepDistBytes to MinDepDistBytes

[Michael Maitland via Phabricator via llvm-commits]

michaelmaitland added inline comments.


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Comment at: llvm/lib/Analysis/LoopAccessAnalysis.cpp:2010
+  // since there is a backwards dependency.
+  uint64_t MaxVF = MinDepDistBytes / (TypeByteSize * Stride);
   LLVM_DEBUG(dbgs() << "LAA: Positive distance " << Val.getSExtValue()
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fhahn wrote:
> fhahn wrote:
> > This is the only non-NFC part of the patch, IIUC? Would it be possible to create a test case showing the new behavior?
> Would it be possible to add a test for the functional change here?
I assume you mean the fact that we update MaxSafeVectorWidthInBits even if `IsTrueDataDependence && EnableForwardingConflictDetection && couldPreventStoreLoadForward(Distance, TypeByteSize)`. 

I am working on constructing a test case for this.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D156158/new/

https://reviews.llvm.org/D156158