[llvm] [LV] Convert gather loads with invariant stride into strided loads (PR #147297)

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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions cpp,h -- llvm/lib/Transforms/Vectorize/LoopVectorize.cpp llvm/lib/Transforms/Vectorize/VPlan.h llvm/lib/Transforms/Vectorize/VPlanAnalysis.cpp llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp llvm/lib/Transforms/Vectorize/VPlanTransforms.h llvm/lib/Transforms/Vectorize/VPlanValue.h llvm/lib/Transforms/Vectorize/VPlanVerifier.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp b/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
index c8fad90e7..645183fde 100644
--- a/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
+++ b/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
@@ -2702,7 +2702,7 @@ static std::pair<VPValue *, VPValue *> matchStridedStart(VPValue *CurIndex) {
     return {nullptr, nullptr};
   unsigned VarIdx = IsLHSUniform ? 1 : 0;
 
-  auto[Start, Stride] = matchStridedStart(WidenR->getOperand(VarIdx));
+  auto [Start, Stride] = matchStridedStart(WidenR->getOperand(VarIdx));
   if (!Start)
     return {nullptr, nullptr};
 
@@ -2749,7 +2749,7 @@ determineBaseAndStride(VPWidenGEPRecipe *WidenGEP) {
     return {nullptr, nullptr};
 
   VPValue *VarIndex = WidenGEP->getOperand(VarOp);
-  auto[Start, Stride] = matchStridedStart(VarIndex);
+  auto [Start, Stride] = matchStridedStart(VarIndex);
   if (!Start)
     return {nullptr, nullptr};
 
diff --git a/llvm/lib/Transforms/Vectorize/VPlanVerifier.cpp b/llvm/lib/Transforms/Vectorize/VPlanVerifier.cpp
index 7c69a43e9..bc9d40834 100644
--- a/llvm/lib/Transforms/Vectorize/VPlanVerifier.cpp
+++ b/llvm/lib/Transforms/Vectorize/VPlanVerifier.cpp
@@ -157,7 +157,7 @@ bool VPlanVerifier::verifyEVLRecipe(const VPInstruction &EVL) const {
           return VerifyEVLUse(*S, S->getNumOperands() - 1);
         })
         .Case<VPWidenStoreEVLRecipe, VPReductionEVLRecipe,
-              VPWidenIntOrFpInductionRecipe,VPWidenStridedLoadRecipe>(
+              VPWidenIntOrFpInductionRecipe, VPWidenStridedLoadRecipe>(
             [&](const VPRecipeBase *S) { return VerifyEVLUse(*S, 2); })
         .Case<VPScalarIVStepsRecipe>([&](auto *R) {
           if (R->getNumOperands() != 3) {

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https://github.com/llvm/llvm-project/pull/147297