[VPlan] Change LoopVectorizationPlanner::TTI to be const reference (NFC)

Author: fhahn

llvm/lib/Transforms/Vectorize/LoopVectorizationPlanner.h

@@ -261,7 +261,7 @@ class LoopVectorizationPlanner {
   const TargetLibraryInfo *TLI;
 
   /// Target Transform Info.
-  const TargetTransformInfo *TTI;
+  const TargetTransformInfo &TTI;
 
   /// The legality analysis.
   LoopVectorizationLegality *Legal;
@@ -285,7 +285,7 @@ class LoopVectorizationPlanner {
 
 public:
   LoopVectorizationPlanner(Loop *L, LoopInfo *LI, const TargetLibraryInfo *TLI,
-                           const TargetTransformInfo *TTI,
+                           const TargetTransformInfo &TTI,
                            LoopVectorizationLegality *Legal,
                            LoopVectorizationCostModel &CM,
                            InterleavedAccessInfo &IAI,

llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

@@ -7515,7 +7515,7 @@ LoopVectorizationPlanner::planInVPlanNativePath(ElementCount UserVF) {
     // reasonable one.
     if (UserVF.isZero()) {
       VF = ElementCount::getFixed(determineVPlanVF(
-          TTI->getRegisterBitWidth(TargetTransformInfo::RGK_FixedWidthVector)
+          TTI.getRegisterBitWidth(TargetTransformInfo::RGK_FixedWidthVector)
               .getFixedValue(),
           CM));
       LLVM_DEBUG(dbgs() << "LV: VPlan computed VF " << VF << ".\n");
@@ -7559,7 +7559,7 @@ LoopVectorizationPlanner::plan(ElementCount UserVF, unsigned UserIC) {
 
   // Invalidate interleave groups if all blocks of loop will be predicated.
   if (CM.blockNeedsPredicationForAnyReason(OrigLoop->getHeader()) &&
-      !useMaskedInterleavedAccesses(*TTI)) {
+      !useMaskedInterleavedAccesses(TTI)) {
     LLVM_DEBUG(
         dbgs()
         << "LV: Invalidate all interleaved groups due to fold-tail by masking "
@@ -9200,7 +9200,7 @@ void LoopVectorizationPlanner::adjustRecipesForReductions(
         VecOp = FMulRecipe;
       }
       VPReductionRecipe *RedRecipe =
-          new VPReductionRecipe(&RdxDesc, R, ChainOp, VecOp, CondOp, TTI);
+          new VPReductionRecipe(&RdxDesc, R, ChainOp, VecOp, CondOp, &TTI);
       WidenRecipe->getVPSingleValue()->replaceAllUsesWith(RedRecipe);
       Plan->removeVPValueFor(R);
       Plan->addVPValue(R, RedRecipe);
@@ -9900,7 +9900,7 @@ static bool processLoopInVPlanNativePath(
   // Use the planner for outer loop vectorization.
   // TODO: CM is not used at this point inside the planner. Turn CM into an
   // optional argument if we don't need it in the future.
-  LoopVectorizationPlanner LVP(L, LI, TLI, TTI, LVL, CM, IAI, PSE, Hints, ORE);
+  LoopVectorizationPlanner LVP(L, LI, TLI, *TTI, LVL, CM, IAI, PSE, Hints, ORE);
 
   // Get user vectorization factor.
   ElementCount UserVF = Hints.getWidth();
@@ -10240,7 +10240,8 @@ bool LoopVectorizePass::processLoop(Loop *L) {
   LoopVectorizationCostModel CM(SEL, L, PSE, LI, &LVL, *TTI, TLI, DB, AC, ORE,
                                 F, &Hints, IAI);
   // Use the planner for vectorization.
-  LoopVectorizationPlanner LVP(L, LI, TLI, TTI, &LVL, CM, IAI, PSE, Hints, ORE);
+  LoopVectorizationPlanner LVP(L, LI, TLI, *TTI, &LVL, CM, IAI, PSE, Hints,
+                               ORE);
 
   // Get user vectorization factor and interleave count.
   ElementCount UserVF = Hints.getWidth();