Index: llvm/include/llvm/Analysis/TargetTransformInfo.h
===================================================================
--- llvm/include/llvm/Analysis/TargetTransformInfo.h
+++ llvm/include/llvm/Analysis/TargetTransformInfo.h
@@ -936,7 +936,7 @@
   /// creating vectors that span multiple vector registers.
   /// If false, the vectorization factor will be chosen based on the
   /// size of the widest element type.
-  bool shouldMaximizeVectorBandwidth(bool OptSize) const;
+  bool shouldMaximizeVectorBandwidth() const;
 
   /// \return The minimum vectorization factor for types of given element
   /// bit width, or 0 if there is no minimum VF. The returned value only
@@ -1523,7 +1523,7 @@
   virtual TypeSize getRegisterBitWidth(RegisterKind K) const = 0;
   virtual unsigned getMinVectorRegisterBitWidth() = 0;
   virtual Optional<unsigned> getMaxVScale() const = 0;
-  virtual bool shouldMaximizeVectorBandwidth(bool OptSize) const = 0;
+  virtual bool shouldMaximizeVectorBandwidth() const = 0;
   virtual ElementCount getMinimumVF(unsigned ElemWidth,
                                     bool IsScalable) const = 0;
   virtual unsigned getMaximumVF(unsigned ElemWidth, unsigned Opcode) const = 0;
@@ -1956,8 +1956,8 @@
   Optional<unsigned> getMaxVScale() const override {
     return Impl.getMaxVScale();
   }
-  bool shouldMaximizeVectorBandwidth(bool OptSize) const override {
-    return Impl.shouldMaximizeVectorBandwidth(OptSize);
+  bool shouldMaximizeVectorBandwidth() const override {
+    return Impl.shouldMaximizeVectorBandwidth();
   }
   ElementCount getMinimumVF(unsigned ElemWidth,
                             bool IsScalable) const override {
Index: llvm/include/llvm/Analysis/TargetTransformInfoImpl.h
===================================================================
--- llvm/include/llvm/Analysis/TargetTransformInfoImpl.h
+++ llvm/include/llvm/Analysis/TargetTransformInfoImpl.h
@@ -388,7 +388,7 @@
 
   Optional<unsigned> getMaxVScale() const { return None; }
 
-  bool shouldMaximizeVectorBandwidth(bool OptSize) const { return false; }
+  bool shouldMaximizeVectorBandwidth() const { return false; }
 
   ElementCount getMinimumVF(unsigned ElemWidth, bool IsScalable) const {
     return ElementCount::get(0, IsScalable);
Index: llvm/lib/Analysis/TargetTransformInfo.cpp
===================================================================
--- llvm/lib/Analysis/TargetTransformInfo.cpp
+++ llvm/lib/Analysis/TargetTransformInfo.cpp
@@ -591,8 +591,8 @@
   return TTIImpl->getMaxVScale();
 }
 
-bool TargetTransformInfo::shouldMaximizeVectorBandwidth(bool OptSize) const {
-  return TTIImpl->shouldMaximizeVectorBandwidth(OptSize);
+bool TargetTransformInfo::shouldMaximizeVectorBandwidth() const {
+  return TTIImpl->shouldMaximizeVectorBandwidth();
 }
 
 ElementCount TargetTransformInfo::getMinimumVF(unsigned ElemWidth,
Index: llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.h
===================================================================
--- llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.h
+++ llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.h
@@ -85,7 +85,7 @@
   unsigned getMinVectorRegisterBitWidth() const;
   ElementCount getMinimumVF(unsigned ElemWidth, bool IsScalable) const;
 
-  bool shouldMaximizeVectorBandwidth(bool OptSize) const {
+  bool shouldMaximizeVectorBandwidth() const {
     return true;
   }
   bool supportsEfficientVectorElementLoadStore() {
Index: llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
===================================================================
--- llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -5837,7 +5837,7 @@
   }
 
   ElementCount MaxVF = MaxVectorSize;
-  if (TTI.shouldMaximizeVectorBandwidth(!isScalarEpilogueAllowed()) ||
+  if (TTI.shouldMaximizeVectorBandwidth() ||
       (MaximizeBandwidth && isScalarEpilogueAllowed())) {
     // Collect all viable vectorization factors larger than the default MaxVF
     // (i.e. MaxVectorSize).