[llvm] [LV] Support strided load with a stride of -1 (PR #128718)

[Alexey Bataev via llvm-commits]

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@@ -8444,17 +8529,30 @@ VPRecipeBuilder::tryToWidenMemory(Instruction *I, ArrayRef<VPValue *> Operands,
       VectorPtr = new VPVectorEndPointerRecipe(
           Ptr, &Plan.getVF(), getLoadStoreType(I), Flags, I->getDebugLoc());
     } else {
-      VectorPtr = new VPVectorPointerRecipe(Ptr, getLoadStoreType(I),
+      VectorPtr = new VPVectorPointerRecipe(Ptr, getLoadStoreType(I), Strided,
                                             GEP ? GEP->getNoWrapFlags()
                                                 : GEPNoWrapFlags::none(),
                                             I->getDebugLoc());
     }
     Builder.insert(VectorPtr);
     Ptr = VectorPtr;
   }
-  if (LoadInst *Load = dyn_cast<LoadInst>(I))
+  if (LoadInst *Load = dyn_cast<LoadInst>(I)) {
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alexey-bataev wrote:

`auto *Load = dyn_cast<LoadInst>(I)`

https://github.com/llvm/llvm-project/pull/128718