[llvm] [LAA] Support different strides & non constant dep distances using SCEV. (PR #88039)

[via llvm-commits]

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``````````bash
git-clang-format --diff 8671429151d5e67d3f21a737809953ae8bdfbfde 110e5ea24d4b23a153b5f602460b81e5228c700f -- llvm/lib/Analysis/LoopAccessAnalysis.cpp llvm/lib/Transforms/Scalar/LoopLoadElimination.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Analysis/LoopAccessAnalysis.cpp b/llvm/lib/Analysis/LoopAccessAnalysis.cpp
index 314484e11c..762d5f0cfc 100644
--- a/llvm/lib/Analysis/LoopAccessAnalysis.cpp
+++ b/llvm/lib/Analysis/LoopAccessAnalysis.cpp
@@ -2020,7 +2020,7 @@ MemoryDepChecker::Dependence::DepType MemoryDepChecker::isDependent(
 
   uint64_t CommonStride = StrideA == StrideB ? StrideA : 0;
   if (isa<SCEVCouldNotCompute>(Dist)) {
-      FoundNonConstantDistanceDependence = true;
+    FoundNonConstantDistanceDependence = true;
     LLVM_DEBUG(dbgs() << "LAA: Dependence because of uncomputable distance.\n");
     return Dependence::Unknown;
   }
@@ -2107,7 +2107,8 @@ MemoryDepChecker::Dependence::DepType MemoryDepChecker::isDependent(
     return Dependence::Unknown;
   }
 
-  // The logic below currently only supports StrideA ==  StrideB, i.e. there's a common stride.
+  // The logic below currently only supports StrideA ==  StrideB, i.e. there's a
+  // common stride.
   if (!CommonStride)
     return Dependence::Unknown;
 

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https://github.com/llvm/llvm-project/pull/88039