[VPlan] Deref VPlanPtr when passing to transform (NFC) (llvm#161369)

For uniformity with other transforms.

Author: artagnon

llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

@@ -8694,7 +8694,7 @@ VPlanPtr LoopVectorizationPlanner::tryToBuildVPlan(VFRange &Range) {
     Plan->addVF(VF);
 
   if (!VPlanTransforms::tryToConvertVPInstructionsToVPRecipes(
-          Plan,
+          *Plan,
           [this](PHINode *P) {
             return Legal->getIntOrFpInductionDescriptor(P);
           },

llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp

@@ -45,13 +45,13 @@ static cl::opt<bool> EnableWideActiveLaneMask(
     cl::desc("Enable use of wide get active lane mask instructions"));
 
 bool VPlanTransforms::tryToConvertVPInstructionsToVPRecipes(
-    VPlanPtr &Plan,
+    VPlan &Plan,
     function_ref<const InductionDescriptor *(PHINode *)>
         GetIntOrFpInductionDescriptor,
     const TargetLibraryInfo &TLI) {
 
   ReversePostOrderTraversal<VPBlockDeepTraversalWrapper<VPBlockBase *>> RPOT(
-      Plan->getVectorLoopRegion());
+      Plan.getVectorLoopRegion());
   for (VPBasicBlock *VPBB : VPBlockUtils::blocksOnly<VPBasicBlock>(RPOT)) {
     // Skip blocks outside region
     if (!VPBB->getParent())
@@ -77,11 +77,11 @@ bool VPlanTransforms::tryToConvertVPInstructionsToVPRecipes(
           for (VPValue *Op : PhiR->operands())
             NewRecipe->addOperand(Op);
         } else {
-          VPValue *Start = Plan->getOrAddLiveIn(II->getStartValue());
+          VPValue *Start = Plan.getOrAddLiveIn(II->getStartValue());
           VPValue *Step =
-              vputils::getOrCreateVPValueForSCEVExpr(*Plan, II->getStep());
+              vputils::getOrCreateVPValueForSCEVExpr(Plan, II->getStep());
           NewRecipe = new VPWidenIntOrFpInductionRecipe(
-              Phi, Start, Step, &Plan->getVF(), *II, Ingredient.getDebugLoc());
+              Phi, Start, Step, &Plan.getVF(), *II, Ingredient.getDebugLoc());
         }
       } else {
         assert(isa<VPInstruction>(&Ingredient) &&

llvm/lib/Transforms/Vectorize/VPlanTransforms.h

@@ -138,7 +138,7 @@ struct VPlanTransforms {
   /// widen recipes. Returns false if any VPInstructions could not be converted
   /// to a wide recipe if needed.
   LLVM_ABI_FOR_TEST static bool tryToConvertVPInstructionsToVPRecipes(
-      VPlanPtr &Plan,
+      VPlan &Plan,
       function_ref<const InductionDescriptor *(PHINode *)>
           GetIntOrFpInductionDescriptor,
       const TargetLibraryInfo &TLI);

llvm/unittests/Transforms/Vectorize/VPlanHCFGTest.cpp

@@ -203,7 +203,7 @@ TEST_F(VPlanHCFGTest, testVPInstructionToVPRecipesInner) {
           VPInstruction::BranchOnCond,
           {Plan->getOrAddLiveIn(ConstantInt::getTrue(F->getContext()))}));
   VPlanTransforms::tryToConvertVPInstructionsToVPRecipes(
-      Plan, [](PHINode *P) { return nullptr; }, TLI);
+      *Plan, [](PHINode *P) { return nullptr; }, TLI);
 
   VPBlockBase *Entry = Plan->getEntry()->getEntryBasicBlock();
   EXPECT_EQ(0u, Entry->getNumPredecessors());

llvm/unittests/Transforms/Vectorize/VPlanUncountableExitTest.cpp

@@ -48,7 +48,7 @@ TEST_F(VPUncountableExitTest, FindUncountableExitRecipes) {
   BasicBlock *LoopHeader = F->getEntryBlock().getSingleSuccessor();
   auto Plan = buildVPlan(LoopHeader, /*HasUncountableExit=*/true);
   VPlanTransforms::tryToConvertVPInstructionsToVPRecipes(
-      Plan, [](PHINode *P) { return nullptr; }, *TLI);
+      *Plan, [](PHINode *P) { return nullptr; }, *TLI);
   VPlanTransforms::runPass(VPlanTransforms::optimize, *Plan);
 
   SmallVector<VPRecipeBase *> Recipes;
@@ -85,7 +85,7 @@ TEST_F(VPUncountableExitTest, NoUncountableExit) {
   BasicBlock *LoopHeader = F->getEntryBlock().getSingleSuccessor();
   auto Plan = buildVPlan(LoopHeader);
   VPlanTransforms::tryToConvertVPInstructionsToVPRecipes(
-      Plan, [](PHINode *P) { return nullptr; }, *TLI);
+      *Plan, [](PHINode *P) { return nullptr; }, *TLI);
   VPlanTransforms::runPass(VPlanTransforms::optimize, *Plan);
 
   SmallVector<VPRecipeBase *> Recipes;