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

[Luke Lau via llvm-commits]

================
@@ -2662,8 +2669,8 @@ struct VPWidenLoadRecipe final : public VPWidenMemoryRecipe, public VPValue {
   bool onlyFirstLaneUsed(const VPValue *Op) const override {
     assert(is_contained(operands(), Op) &&
            "Op must be an operand of the recipe");
-    // Widened, consecutive loads operations only demand the first lane of
-    // their address.
+    // Widened, consecutive loads operations only demand the first lane of their
+    // address.
----------------
lukel97 wrote:

Same here, it no longer applies now that it's split off

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