[llvm] 41c9f4c - [LoopVectorize] NFC: Fix unused variable warning for MaxSafeDepDist

[Sander de Smalen via llvm-commits]

Author: Sander de Smalen
Date: 2020-11-19T17:41:35Z
New Revision: 41c9f4c1cea7314c0a6a32f2e59dab60cd575c1f

URL: https://github.com/llvm/llvm-project/commit/41c9f4c1cea7314c0a6a32f2e59dab60cd575c1f
DIFF: https://github.com/llvm/llvm-project/commit/41c9f4c1cea7314c0a6a32f2e59dab60cd575c1f.diff

LOG: [LoopVectorize] NFC: Fix unused variable warning for MaxSafeDepDist

rGf571fe6df585127d8b045f8e8f5b4e59da9bbb73 led to a warning of an unused
variable for MaxSafeDepDist (written but not used). It seems this
variable and assignment can be safely removed.

Added: 
    

Modified: 
    llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index 75ecb505b985..7404c92cdb2f 100644
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -5789,12 +5789,6 @@ LoopVectorizationCostModel::calculateRegisterUsage(ArrayRef<ElementCount> VFs) {
     TransposeEnds[Interval.second].push_back(Interval.first);
 
   SmallPtrSet<Instruction *, 8> OpenIntervals;
-
-  // Get the size of the widest register.
-  unsigned MaxSafeDepDist = -1U;
-  if (Legal->getMaxSafeDepDistBytes() != -1U)
-    MaxSafeDepDist = Legal->getMaxSafeDepDistBytes() * 8;
-
   SmallVector<RegisterUsage, 8> RUs(VFs.size());
   SmallVector<SmallMapVector<unsigned, unsigned, 4>, 8> MaxUsages(VFs.size());