[llvm] Reapply "[VPlan] Extract reverse mask from reverse accesses" (PR #189930)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,h -- llvm/lib/Transforms/Vectorize/LoopVectorize.cpp llvm/lib/Transforms/Vectorize/VPlan.h llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp llvm/unittests/Transforms/Vectorize/VPlanTest.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp b/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
index 7104201b5..26a814e86 100644
--- a/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
+++ b/llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
@@ -1061,11 +1061,11 @@ InstructionCost VPRecipeWithIRFlags::getCostForRecipeWithOpcode(
              Opcode == Instruction::FPExt) {
       if (auto *Recipe = Operand->getDefiningRecipe()) {
         VPValue *ReverseOp;
-        if (match(Recipe, m_CombineOr(
-                              m_Reverse(m_VPValue(ReverseOp)),
-                              m_Intrinsic<Intrinsic::experimental_vp_reverse>(
-                                  m_VPValue(ReverseOp), m_VPValue(),
-                                  m_VPValue())))) {
+        if (match(Recipe,
+                  m_CombineOr(
+                      m_Reverse(m_VPValue(ReverseOp)),
+                      m_Intrinsic<Intrinsic::experimental_vp_reverse>(
+                          m_VPValue(ReverseOp), m_VPValue(), m_VPValue())))) {
           Recipe = ReverseOp->getDefiningRecipe();
           IsReverse = true;
         }

``````````

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https://github.com/llvm/llvm-project/pull/189930