diff --git a/include/llvm/ADT/BitVector.h b/include/llvm/ADT/BitVector.h
index ad00d51f99e..70ed2468f92 100644
--- a/include/llvm/ADT/BitVector.h
+++ b/include/llvm/ADT/BitVector.h
@@ -244,7 +244,7 @@ public:
 
     BitWord PrefixMask = ~0UL << (I % BITWORD_SIZE);
     Bits[I / BITWORD_SIZE] |= PrefixMask;
-    I = RoundUpToAlignment(I, BITWORD_SIZE);
+    I = alignTo(I, BITWORD_SIZE);
 
     for (; I + BITWORD_SIZE <= E; I += BITWORD_SIZE)
       Bits[I / BITWORD_SIZE] = ~0UL;
@@ -283,7 +283,7 @@ public:
 
     BitWord PrefixMask = ~0UL << (I % BITWORD_SIZE);
     Bits[I / BITWORD_SIZE] &= ~PrefixMask;
-    I = RoundUpToAlignment(I, BITWORD_SIZE);
+    I = alignTo(I, BITWORD_SIZE);
 
     for (; I + BITWORD_SIZE <= E; I += BITWORD_SIZE)
       Bits[I / BITWORD_SIZE] = 0UL;
diff --git a/include/llvm/CodeGen/CallingConvLower.h b/include/llvm/CodeGen/CallingConvLower.h
index 415abb90da5..0f3521fb62a 100644
--- a/include/llvm/CodeGen/CallingConvLower.h
+++ b/include/llvm/CodeGen/CallingConvLower.h
@@ -281,7 +281,7 @@ public:
   /// be able to store all arguments and such that the alignment requirement
   /// of each of the arguments is satisfied.
   unsigned getAlignedCallFrameSize() const {
-    return RoundUpToAlignment(StackOffset, MaxStackArgAlign);
+    return alignTo(StackOffset, MaxStackArgAlign);
   }
 
   /// isAllocated - Return true if the specified register (or an alias) is
@@ -412,7 +412,7 @@ public:
   /// and alignment.
   unsigned AllocateStack(unsigned Size, unsigned Align) {
     assert(Align && ((Align - 1) & Align) == 0); // Align is power of 2.
-    StackOffset = RoundUpToAlignment(StackOffset, Align);
+    StackOffset = alignTo(StackOffset, Align);
     unsigned Result = StackOffset;
     StackOffset += Size;
     MaxStackArgAlign = std::max(Align, MaxStackArgAlign);
diff --git a/include/llvm/ExecutionEngine/Orc/OrcRemoteTargetClient.h b/include/llvm/ExecutionEngine/Orc/OrcRemoteTargetClient.h
index d7640b8e8b5..08a9dd218e4 100644
--- a/include/llvm/ExecutionEngine/Orc/OrcRemoteTargetClient.h
+++ b/include/llvm/ExecutionEngine/Orc/OrcRemoteTargetClient.h
@@ -156,7 +156,7 @@ public:
         {
           TargetAddress NextCodeAddr = ObjAllocs.RemoteCodeAddr;
           for (auto &Alloc : ObjAllocs.CodeAllocs) {
-            NextCodeAddr = RoundUpToAlignment(NextCodeAddr, Alloc.getAlign());
+            NextCodeAddr = alignTo(NextCodeAddr, Alloc.getAlign());
             Dyld.mapSectionAddress(Alloc.getLocalAddress(), NextCodeAddr);
             DEBUG(dbgs() << "     code: "
                          << static_cast<void *>(Alloc.getLocalAddress())
@@ -168,8 +168,7 @@ public:
         {
           TargetAddress NextRODataAddr = ObjAllocs.RemoteRODataAddr;
           for (auto &Alloc : ObjAllocs.RODataAllocs) {
-            NextRODataAddr =
-                RoundUpToAlignment(NextRODataAddr, Alloc.getAlign());
+            NextRODataAddr = alignTo(NextRODataAddr, Alloc.getAlign());
             Dyld.mapSectionAddress(Alloc.getLocalAddress(), NextRODataAddr);
             DEBUG(dbgs() << "  ro-data: "
                          << static_cast<void *>(Alloc.getLocalAddress())
@@ -182,8 +181,7 @@ public:
         {
           TargetAddress NextRWDataAddr = ObjAllocs.RemoteRWDataAddr;
           for (auto &Alloc : ObjAllocs.RWDataAllocs) {
-            NextRWDataAddr =
-                RoundUpToAlignment(NextRWDataAddr, Alloc.getAlign());
+            NextRWDataAddr = alignTo(NextRWDataAddr, Alloc.getAlign());
             Dyld.mapSectionAddress(Alloc.getLocalAddress(), NextRWDataAddr);
             DEBUG(dbgs() << "  rw-data: "
                          << static_cast<void *>(Alloc.getLocalAddress())
@@ -284,7 +282,7 @@ public:
 
       char *getLocalAddress() const {
         uintptr_t LocalAddr = reinterpret_cast<uintptr_t>(Contents.get());
-        LocalAddr = RoundUpToAlignment(LocalAddr, Align);
+        LocalAddr = alignTo(LocalAddr, Align);
         return reinterpret_cast<char *>(LocalAddr);
       }
 
diff --git a/include/llvm/IR/DataLayout.h b/include/llvm/IR/DataLayout.h
index 19a3a6661fe..ebdc159d907 100644
--- a/include/llvm/IR/DataLayout.h
+++ b/include/llvm/IR/DataLayout.h
@@ -387,7 +387,7 @@ public:
   /// returns 12 or 16 for x86_fp80, depending on alignment.
   uint64_t getTypeAllocSize(Type *Ty) const {
     // Round up to the next alignment boundary.
-    return RoundUpToAlignment(getTypeStoreSize(Ty), getABITypeAlignment(Ty));
+    return alignTo(getTypeStoreSize(Ty), getABITypeAlignment(Ty));
   }
 
   /// \brief Returns the offset in bits between successive objects of the
diff --git a/include/llvm/Support/MathExtras.h b/include/llvm/Support/MathExtras.h
index bd1e36488a9..97a6988f5c8 100644
--- a/include/llvm/Support/MathExtras.h
+++ b/include/llvm/Support/MathExtras.h
@@ -630,7 +630,7 @@ inline uint64_t RoundUpToAlignment(uint64_t Value, uint64_t Align,
 /// or equal to \p Value and is a multiple of \p Align. \p Align must be
 /// non-zero.
 inline uint64_t OffsetToAlignment(uint64_t Value, uint64_t Align) {
-  return RoundUpToAlignment(Value, Align) - Value;
+  return alignTo(Value, Align) - Value;
 }
 
 /// SignExtend32 - Sign extend B-bit number x to 32-bit int.
diff --git a/include/llvm/Support/TrailingObjects.h b/include/llvm/Support/TrailingObjects.h
index 8529746eecc..6c721f267be 100644
--- a/include/llvm/Support/TrailingObjects.h
+++ b/include/llvm/Support/TrailingObjects.h
@@ -197,7 +197,7 @@ struct TrailingObjectsImpl<Align, BaseTy, TopTrailingObj, PrevTy, NextTy,
       typename ExtractSecondType<MoreTys, size_t>::type... MoreCounts) {
     return additionalSizeToAllocImpl(
         (requiresRealignment()
-             ? llvm::RoundUpToAlignment(SizeSoFar, llvm::alignOf<NextTy>())
+             ? llvm::alignTo(SizeSoFar, llvm::alignOf<NextTy>())
              : SizeSoFar) +
             sizeof(NextTy) * Count1,
         MoreCounts...);
diff --git a/include/llvm/Target/TargetFrameLowering.h b/include/llvm/Target/TargetFrameLowering.h
index cadd07d71f1..df570c2677c 100644
--- a/include/llvm/Target/TargetFrameLowering.h
+++ b/include/llvm/Target/TargetFrameLowering.h
@@ -75,9 +75,9 @@ public:
   ///
   int alignSPAdjust(int SPAdj) const {
     if (SPAdj < 0) {
-      SPAdj = -RoundUpToAlignment(-SPAdj, StackAlignment);
+      SPAdj = -alignTo(-SPAdj, StackAlignment);
     } else {
-      SPAdj = RoundUpToAlignment(SPAdj, StackAlignment);
+      SPAdj = alignTo(SPAdj, StackAlignment);
     }
     return SPAdj;
   }
diff --git a/lib/Analysis/MemoryBuiltins.cpp b/lib/Analysis/MemoryBuiltins.cpp
index 9e896aed0dc..480ab5cddde 100644
--- a/lib/Analysis/MemoryBuiltins.cpp
+++ b/lib/Analysis/MemoryBuiltins.cpp
@@ -376,7 +376,7 @@ STATISTIC(ObjectVisitorLoad,
 
 APInt ObjectSizeOffsetVisitor::align(APInt Size, uint64_t Align) {
   if (RoundToAlign && Align)
-    return APInt(IntTyBits, RoundUpToAlignment(Size.getZExtValue(), Align));
+    return APInt(IntTyBits, alignTo(Size.getZExtValue(), Align));
   return Size;
 }
 
diff --git a/lib/CodeGen/CallingConvLower.cpp b/lib/CodeGen/CallingConvLower.cpp
index 23c0d542560..bdd5b5552c0 100644
--- a/lib/CodeGen/CallingConvLower.cpp
+++ b/lib/CodeGen/CallingConvLower.cpp
@@ -53,7 +53,7 @@ void CCState::HandleByVal(unsigned ValNo, MVT ValVT,
     Align = MinAlign;
   MF.getFrameInfo()->ensureMaxAlignment(Align);
   MF.getSubtarget().getTargetLowering()->HandleByVal(this, Size, Align);
-  Size = unsigned(RoundUpToAlignment(Size, MinAlign));
+  Size = unsigned(alignTo(Size, MinAlign));
   unsigned Offset = AllocateStack(Size, Align);
   addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo));
 }
diff --git a/lib/CodeGen/PrologEpilogInserter.cpp b/lib/CodeGen/PrologEpilogInserter.cpp
index 939c50027b0..02b49e038fb 100644
--- a/lib/CodeGen/PrologEpilogInserter.cpp
+++ b/lib/CodeGen/PrologEpilogInserter.cpp
@@ -512,7 +512,7 @@ AdjustStackOffset(MachineFrameInfo *MFI, int FrameIdx,
   MaxAlign = std::max(MaxAlign, Align);
 
   // Adjust to alignment boundary.
-  Offset = RoundUpToAlignment(Offset, Align, Skew);
+  Offset = alignTo(Offset, Align, Skew);
 
   if (StackGrowsDown) {
     DEBUG(dbgs() << "alloc FI(" << FrameIdx << ") at SP[" << -Offset << "]\n");
@@ -596,7 +596,7 @@ void PEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
 
       unsigned Align = MFI->getObjectAlignment(i);
       // Adjust to alignment boundary
-      Offset = RoundUpToAlignment(Offset, Align, Skew);
+      Offset = alignTo(Offset, Align, Skew);
 
       MFI->setObjectOffset(i, -Offset);        // Set the computed offset
     }
@@ -605,7 +605,7 @@ void PEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
     for (int i = MaxCSFI; i >= MinCSFI ; --i) {
       unsigned Align = MFI->getObjectAlignment(i);
       // Adjust to alignment boundary
-      Offset = RoundUpToAlignment(Offset, Align, Skew);
+      Offset = alignTo(Offset, Align, Skew);
 
       MFI->setObjectOffset(i, Offset);
       Offset += MFI->getObjectSize(i);
@@ -638,7 +638,7 @@ void PEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
     unsigned Align = MFI->getLocalFrameMaxAlign();
 
     // Adjust to alignment boundary.
-    Offset = RoundUpToAlignment(Offset, Align, Skew);
+    Offset = alignTo(Offset, Align, Skew);
 
     DEBUG(dbgs() << "Local frame base offset: " << Offset << "\n");
 
@@ -757,7 +757,7 @@ void PEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
     // If the frame pointer is eliminated, all frame offsets will be relative to
     // SP not FP. Align to MaxAlign so this works.
     StackAlign = std::max(StackAlign, MaxAlign);
-    Offset = RoundUpToAlignment(Offset, StackAlign, Skew);
+    Offset = alignTo(Offset, StackAlign, Skew);
   }
 
   // Update frame info to pretend that this is part of the stack...
diff --git a/lib/ExecutionEngine/ExecutionEngine.cpp b/lib/ExecutionEngine/ExecutionEngine.cpp
index 41c8da40346..7d09ec6d1da 100644
--- a/lib/ExecutionEngine/ExecutionEngine.cpp
+++ b/lib/ExecutionEngine/ExecutionEngine.cpp
@@ -106,9 +106,7 @@ public:
     Type *ElTy = GV->getType()->getElementType();
     size_t GVSize = (size_t)TD.getTypeAllocSize(ElTy);
     void *RawMemory = ::operator new(
-      RoundUpToAlignment(sizeof(GVMemoryBlock),
-                         TD.getPreferredAlignment(GV))
-      + GVSize);
+        alignTo(sizeof(GVMemoryBlock), TD.getPreferredAlignment(GV)) + GVSize);
     new(RawMemory) GVMemoryBlock(GV);
     return static_cast<char*>(RawMemory) + sizeof(GVMemoryBlock);
   }
diff --git a/lib/IR/DataLayout.cpp b/lib/IR/DataLayout.cpp
index 5468f47bbfe..5ec5f92b388 100644
--- a/lib/IR/DataLayout.cpp
+++ b/lib/IR/DataLayout.cpp
@@ -52,7 +52,7 @@ StructLayout::StructLayout(StructType *ST, const DataLayout &DL) {
     // Add padding if necessary to align the data element properly.
     if ((StructSize & (TyAlign-1)) != 0) {
       IsPadded = true;
-      StructSize = RoundUpToAlignment(StructSize, TyAlign);
+      StructSize = alignTo(StructSize, TyAlign);
     }
 
     // Keep track of maximum alignment constraint.
@@ -69,7 +69,7 @@ StructLayout::StructLayout(StructType *ST, const DataLayout &DL) {
   // and all array elements would be aligned correctly.
   if ((StructSize & (StructAlignment-1)) != 0) {
     IsPadded = true;
-    StructSize = RoundUpToAlignment(StructSize, StructAlignment);
+    StructSize = alignTo(StructSize, StructAlignment);
   }
 }
 
diff --git a/lib/IR/Mangler.cpp b/lib/IR/Mangler.cpp
index 016cb9eb689..ddf024df8cc 100644
--- a/lib/IR/Mangler.cpp
+++ b/lib/IR/Mangler.cpp
@@ -99,7 +99,7 @@ static void addByteCountSuffix(raw_ostream &OS, const Function *F,
       Ty = cast<PointerType>(Ty)->getElementType();
     // Size should be aligned to pointer size.
     unsigned PtrSize = DL.getPointerSize();
-    ArgWords += RoundUpToAlignment(DL.getTypeAllocSize(Ty), PtrSize);
+    ArgWords += alignTo(DL.getTypeAllocSize(Ty), PtrSize);
   }
 
   OS << '@' << ArgWords;
diff --git a/lib/IR/Metadata.cpp b/lib/IR/Metadata.cpp
index 9a9a5017841..543eaac483d 100644
--- a/lib/IR/Metadata.cpp
+++ b/lib/IR/Metadata.cpp
@@ -433,7 +433,7 @@ void *MDNode::operator new(size_t Size, unsigned NumOps) {
   size_t OpSize = NumOps * sizeof(MDOperand);
   // uint64_t is the most aligned type we need support (ensured by static_assert
   // above)
-  OpSize = RoundUpToAlignment(OpSize, llvm::alignOf<uint64_t>());
+  OpSize = alignTo(OpSize, llvm::alignOf<uint64_t>());
   void *Ptr = reinterpret_cast<char *>(::operator new(OpSize + Size)) + OpSize;
   MDOperand *O = static_cast<MDOperand *>(Ptr);
   for (MDOperand *E = O - NumOps; O != E; --O)
@@ -444,7 +444,7 @@ void *MDNode::operator new(size_t Size, unsigned NumOps) {
 void MDNode::operator delete(void *Mem) {
   MDNode *N = static_cast<MDNode *>(Mem);
   size_t OpSize = N->NumOperands * sizeof(MDOperand);
-  OpSize = RoundUpToAlignment(OpSize, llvm::alignOf<uint64_t>());
+  OpSize = alignTo(OpSize, llvm::alignOf<uint64_t>());
 
   MDOperand *O = static_cast<MDOperand *>(Mem);
   for (MDOperand *E = O - N->NumOperands; O != E; --O)
diff --git a/lib/MC/MachObjectWriter.cpp b/lib/MC/MachObjectWriter.cpp
index 324385fa132..8ebd7031c65 100644
--- a/lib/MC/MachObjectWriter.cpp
+++ b/lib/MC/MachObjectWriter.cpp
@@ -404,7 +404,7 @@ static unsigned ComputeLinkerOptionsLoadCommandSize(
   unsigned Size = sizeof(MachO::linker_option_command);
   for (const std::string &Option : Options)
     Size += Option.size() + 1;
-  return RoundUpToAlignment(Size, is64Bit ? 8 : 4);
+  return alignTo(Size, is64Bit ? 8 : 4);
 }
 
 void MachObjectWriter::writeLinkerOptionsLoadCommand(
@@ -606,7 +606,7 @@ void MachObjectWriter::computeSectionAddresses(const MCAssembler &Asm,
                                                const MCAsmLayout &Layout) {
   uint64_t StartAddress = 0;
   for (const MCSection *Sec : Layout.getSectionOrder()) {
-    StartAddress = RoundUpToAlignment(StartAddress, Sec->getAlignment());
+    StartAddress = alignTo(StartAddress, Sec->getAlignment());
     SectionAddress[Sec] = StartAddress;
     StartAddress += Layout.getSectionAddressSize(Sec);
 
@@ -736,7 +736,7 @@ void MachObjectWriter::writeObject(MCAssembler &Asm,
 
   // Add the loh load command size, if used.
   uint64_t LOHRawSize = Asm.getLOHContainer().getEmitSize(*this, Layout);
-  uint64_t LOHSize = RoundUpToAlignment(LOHRawSize, is64Bit() ? 8 : 4);
+  uint64_t LOHSize = alignTo(LOHRawSize, is64Bit() ? 8 : 4);
   if (LOHSize) {
     ++NumLoadCommands;
     LoadCommandsSize += sizeof(MachO::linkedit_data_command);
diff --git a/lib/MC/WinCOFFObjectWriter.cpp b/lib/MC/WinCOFFObjectWriter.cpp
index a76cbdbd544..36b317eebb9 100644
--- a/lib/MC/WinCOFFObjectWriter.cpp
+++ b/lib/MC/WinCOFFObjectWriter.cpp
@@ -924,7 +924,7 @@ void WinCOFFObjectWriter::writeObject(MCAssembler &Asm,
 
     if (IsPhysicalSection(Sec)) {
       // Align the section data to a four byte boundary.
-      offset = RoundUpToAlignment(offset, 4);
+      offset = alignTo(offset, 4);
       Sec->Header.PointerToRawData = offset;
 
       offset += Sec->Header.SizeOfRawData;
diff --git a/lib/Support/MemoryBuffer.cpp b/lib/Support/MemoryBuffer.cpp
index faee10bb07c..25ddfe52a1d 100644
--- a/lib/Support/MemoryBuffer.cpp
+++ b/lib/Support/MemoryBuffer.cpp
@@ -135,7 +135,7 @@ MemoryBuffer::getNewUninitMemBuffer(size_t Size, const Twine &BufferName) {
   SmallString<256> NameBuf;
   StringRef NameRef = BufferName.toStringRef(NameBuf);
   size_t AlignedStringLen =
-      RoundUpToAlignment(sizeof(MemoryBufferMem) + NameRef.size() + 1, 16);
+      alignTo(sizeof(MemoryBufferMem) + NameRef.size() + 1, 16);
   size_t RealLen = AlignedStringLen + Size + 1;
   char *Mem = static_cast<char*>(operator new(RealLen, std::nothrow));
   if (!Mem)
diff --git a/lib/Target/AArch64/AArch64FrameLowering.cpp b/lib/Target/AArch64/AArch64FrameLowering.cpp
index 11ae8005370..3c57644c483 100644
--- a/lib/Target/AArch64/AArch64FrameLowering.cpp
+++ b/lib/Target/AArch64/AArch64FrameLowering.cpp
@@ -170,7 +170,7 @@ void AArch64FrameLowering::eliminateCallFramePseudoInstr(
     unsigned Align = getStackAlignment();
 
     int64_t Amount = I->getOperand(0).getImm();
-    Amount = RoundUpToAlignment(Amount, Align);
+    Amount = alignTo(Amount, Align);
     if (!IsDestroy)
       Amount = -Amount;
 
diff --git a/lib/Target/AArch64/AArch64ISelLowering.cpp b/lib/Target/AArch64/AArch64ISelLowering.cpp
index 77637364337..465f153708f 100644
--- a/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -2545,7 +2545,7 @@ SDValue AArch64TargetLowering::LowerFormalArguments(
     // This is a non-standard ABI so by fiat I say we're allowed to make full
     // use of the stack area to be popped, which must be aligned to 16 bytes in
     // any case:
-    StackArgSize = RoundUpToAlignment(StackArgSize, 16);
+    StackArgSize = alignTo(StackArgSize, 16);
 
     // If we're expected to restore the stack (e.g. fastcc) then we'll be adding
     // a multiple of 16.
@@ -2959,7 +2959,7 @@ AArch64TargetLowering::LowerCall(CallLoweringInfo &CLI,
 
     // Since callee will pop argument stack as a tail call, we must keep the
     // popped size 16-byte aligned.
-    NumBytes = RoundUpToAlignment(NumBytes, 16);
+    NumBytes = alignTo(NumBytes, 16);
 
     // FPDiff will be negative if this tail call requires more space than we
     // would automatically have in our incoming argument space. Positive if we
@@ -3199,9 +3199,8 @@ AArch64TargetLowering::LowerCall(CallLoweringInfo &CLI,
   Chain = DAG.getNode(AArch64ISD::CALL, DL, NodeTys, Ops);
   InFlag = Chain.getValue(1);
 
-  uint64_t CalleePopBytes = DoesCalleeRestoreStack(CallConv, TailCallOpt)
-                                ? RoundUpToAlignment(NumBytes, 16)
-                                : 0;
+  uint64_t CalleePopBytes =
+      DoesCalleeRestoreStack(CallConv, TailCallOpt) ? alignTo(NumBytes, 16) : 0;
 
   Chain = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(NumBytes, DL, true),
                              DAG.getIntPtrConstant(CalleePopBytes, DL, true),
diff --git a/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp b/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp
index 43664df3b86..6d09df11c2b 100644
--- a/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp
+++ b/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp
@@ -976,7 +976,7 @@ static bool inBoundsForPair(bool IsUnscaled, int Offset, int OffsetStride) {
 
 // Do alignment, specialized to power of 2 and for signed ints,
 // avoiding having to do a C-style cast from uint_64t to int when
-// using RoundUpToAlignment from include/llvm/Support/MathExtras.h.
+// using alignTo from include/llvm/Support/MathExtras.h.
 // FIXME: Move this function to include/MathExtras.h?
 static int alignTo(int Num, int PowOf2) {
   return (Num + PowOf2 - 1) & ~(PowOf2 - 1);
diff --git a/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp b/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
index 1239dfb235e..0e911c451af 100644
--- a/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
+++ b/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
@@ -327,7 +327,7 @@ void AMDGPUAsmPrinter::EmitProgramInfoR600(const MachineFunction &MF) {
 
   if (MFI->getShaderType() == ShaderType::COMPUTE) {
     OutStreamer->EmitIntValue(R_0288E8_SQ_LDS_ALLOC, 4);
-    OutStreamer->EmitIntValue(RoundUpToAlignment(MFI->LDSSize, 4) >> 2, 4);
+    OutStreamer->EmitIntValue(alignTo(MFI->LDSSize, 4) >> 2, 4);
   }
 }
 
@@ -503,7 +503,7 @@ void AMDGPUAsmPrinter::getSIProgramInfo(SIProgramInfo &ProgInfo,
 
   ProgInfo.LDSSize = MFI->LDSSize + LDSSpillSize;
   ProgInfo.LDSBlocks =
-     RoundUpToAlignment(ProgInfo.LDSSize, 1 << LDSAlignShift) >> LDSAlignShift;
+      alignTo(ProgInfo.LDSSize, 1 << LDSAlignShift) >> LDSAlignShift;
 
   // Scratch is allocated in 256 dword blocks.
   unsigned ScratchAlignShift = 10;
@@ -511,8 +511,9 @@ void AMDGPUAsmPrinter::getSIProgramInfo(SIProgramInfo &ProgInfo,
   // is used by the entire wave.  ProgInfo.ScratchSize is the amount of
   // scratch memory used per thread.
   ProgInfo.ScratchBlocks =
-    RoundUpToAlignment(ProgInfo.ScratchSize * STM.getWavefrontSize(),
-                       1 << ScratchAlignShift) >> ScratchAlignShift;
+      alignTo(ProgInfo.ScratchSize * STM.getWavefrontSize(),
+              1 << ScratchAlignShift) >>
+      ScratchAlignShift;
 
   ProgInfo.ComputePGMRSrc1 =
       S_00B848_VGPRS(ProgInfo.VGPRBlocks) |
diff --git a/lib/Target/AMDGPU/AMDGPUFrameLowering.cpp b/lib/Target/AMDGPU/AMDGPUFrameLowering.cpp
index 4d84d281d99..3e6495546d1 100644
--- a/lib/Target/AMDGPU/AMDGPUFrameLowering.cpp
+++ b/lib/Target/AMDGPU/AMDGPUFrameLowering.cpp
@@ -87,15 +87,15 @@ int AMDGPUFrameLowering::getFrameIndexReference(const MachineFunction &MF,
   int UpperBound = FI == -1 ? MFI->getNumObjects() : FI;
 
   for (int i = MFI->getObjectIndexBegin(); i < UpperBound; ++i) {
-    OffsetBytes = RoundUpToAlignment(OffsetBytes, MFI->getObjectAlignment(i));
+    OffsetBytes = alignTo(OffsetBytes, MFI->getObjectAlignment(i));
     OffsetBytes += MFI->getObjectSize(i);
     // Each register holds 4 bytes, so we must always align the offset to at
     // least 4 bytes, so that 2 frame objects won't share the same register.
-    OffsetBytes = RoundUpToAlignment(OffsetBytes, 4);
+    OffsetBytes = alignTo(OffsetBytes, 4);
   }
 
   if (FI != -1)
-    OffsetBytes = RoundUpToAlignment(OffsetBytes, MFI->getObjectAlignment(FI));
+    OffsetBytes = alignTo(OffsetBytes, MFI->getObjectAlignment(FI));
 
   return OffsetBytes / (getStackWidth(MF) * 4);
 }
diff --git a/lib/Target/AMDGPU/R600ControlFlowFinalizer.cpp b/lib/Target/AMDGPU/R600ControlFlowFinalizer.cpp
index bd80bb211b4..bb4bda25470 100644
--- a/lib/Target/AMDGPU/R600ControlFlowFinalizer.cpp
+++ b/lib/Target/AMDGPU/R600ControlFlowFinalizer.cpp
@@ -142,8 +142,8 @@ unsigned CFStack::getSubEntrySize(CFStack::StackItem Item) {
 }
 
 void CFStack::updateMaxStackSize() {
-  unsigned CurrentStackSize = CurrentEntries +
-                              (RoundUpToAlignment(CurrentSubEntries, 4) / 4);
+  unsigned CurrentStackSize =
+      CurrentEntries + (alignTo(CurrentSubEntries, 4) / 4);
   MaxStackSize = std::max(CurrentStackSize, MaxStackSize);
 }
 
diff --git a/lib/Target/ARM/ARMCallingConv.h b/lib/Target/ARM/ARMCallingConv.h
index a731d00883a..71b81936240 100644
--- a/lib/Target/ARM/ARMCallingConv.h
+++ b/lib/Target/ARM/ARMCallingConv.h
@@ -211,7 +211,7 @@ static bool CC_ARM_AAPCS_Custom_Aggregate(unsigned &ValNo, MVT &ValVT,
 
     // First consume all registers that would give an unaligned object. Whether
     // we go on stack or in regs, no-one will be using them in future.
-    unsigned RegAlign = RoundUpToAlignment(Align, 4) / 4;
+    unsigned RegAlign = alignTo(Align, 4) / 4;
     while (RegIdx % RegAlign != 0 && RegIdx < RegList.size())
       State.AllocateReg(RegList[RegIdx++]);
 
diff --git a/lib/Target/ARM/ThumbRegisterInfo.cpp b/lib/Target/ARM/ThumbRegisterInfo.cpp
index b5f9d7e38f2..427ec6ea7e0 100644
--- a/lib/Target/ARM/ThumbRegisterInfo.cpp
+++ b/lib/Target/ARM/ThumbRegisterInfo.cpp
@@ -281,7 +281,7 @@ void llvm::emitThumbRegPlusImmediate(MachineBasicBlock &MBB,
 
   unsigned RequiredExtraInstrs;
   if (ExtraRange)
-    RequiredExtraInstrs = RoundUpToAlignment(RangeAfterCopy, ExtraRange) / ExtraRange;
+    RequiredExtraInstrs = alignTo(RangeAfterCopy, ExtraRange) / ExtraRange;
   else if (RangeAfterCopy > 0)
     // We need an extra instruction but none is available
     RequiredExtraInstrs = 1000000;
diff --git a/lib/Target/Hexagon/HexagonFrameLowering.cpp b/lib/Target/Hexagon/HexagonFrameLowering.cpp
index 7a52a1c9eae..c7b06d22fd4 100644
--- a/lib/Target/Hexagon/HexagonFrameLowering.cpp
+++ b/lib/Target/Hexagon/HexagonFrameLowering.cpp
@@ -436,10 +436,10 @@ void HexagonFrameLowering::insertPrologueInBlock(MachineBasicBlock &MBB) const {
   // Get the number of bytes to allocate from the FrameInfo.
   unsigned FrameSize = MFI->getStackSize();
   // Round up the max call frame size to the max alignment on the stack.
-  unsigned MaxCFA = RoundUpToAlignment(MFI->getMaxCallFrameSize(), MaxAlign);
+  unsigned MaxCFA = alignTo(MFI->getMaxCallFrameSize(), MaxAlign);
   MFI->setMaxCallFrameSize(MaxCFA);
 
-  FrameSize = MaxCFA + RoundUpToAlignment(FrameSize, MaxAlign);
+  FrameSize = MaxCFA + alignTo(FrameSize, MaxAlign);
   MFI->setStackSize(FrameSize);
 
   bool AlignStack = (MaxAlign > getStackAlignment());
diff --git a/lib/Target/Mips/MipsFastISel.cpp b/lib/Target/Mips/MipsFastISel.cpp
index e9eaf810637..8bbe3d4df69 100644
--- a/lib/Target/Mips/MipsFastISel.cpp
+++ b/lib/Target/Mips/MipsFastISel.cpp
@@ -1180,7 +1180,7 @@ bool MipsFastISel::processCallArgs(CallLoweringInfo &CLI,
       // for now (will return false). We need to determine the right alignment
       // based on the normal alignment for the underlying machine type.
       //
-      unsigned ArgSize = RoundUpToAlignment(ArgVT.getSizeInBits(), 4);
+      unsigned ArgSize = alignTo(ArgVT.getSizeInBits(), 4);
 
       unsigned BEAlign = 0;
       if (ArgSize < 8 && !Subtarget->isLittle())
diff --git a/lib/Target/Mips/MipsFrameLowering.cpp b/lib/Target/Mips/MipsFrameLowering.cpp
index a74c8abd2e2..1c7e5c50363 100644
--- a/lib/Target/Mips/MipsFrameLowering.cpp
+++ b/lib/Target/Mips/MipsFrameLowering.cpp
@@ -122,7 +122,7 @@ uint64_t MipsFrameLowering::estimateStackSize(const MachineFunction &MF) const {
   // Conservatively assume all callee-saved registers will be saved.
   for (const MCPhysReg *R = TRI.getCalleeSavedRegs(&MF); *R; ++R) {
     unsigned Size = TRI.getMinimalPhysRegClass(*R)->getSize();
-    Offset = RoundUpToAlignment(Offset + Size, Size);
+    Offset = alignTo(Offset + Size, Size);
   }
 
   unsigned MaxAlign = MFI->getMaxAlignment();
@@ -133,14 +133,14 @@ uint64_t MipsFrameLowering::estimateStackSize(const MachineFunction &MF) const {
 
   // Iterate over other objects.
   for (unsigned I = 0, E = MFI->getObjectIndexEnd(); I != E; ++I)
-    Offset = RoundUpToAlignment(Offset + MFI->getObjectSize(I), MaxAlign);
+    Offset = alignTo(Offset + MFI->getObjectSize(I), MaxAlign);
 
   // Call frame.
   if (MFI->adjustsStack() && hasReservedCallFrame(MF))
-    Offset = RoundUpToAlignment(Offset + MFI->getMaxCallFrameSize(),
-                                std::max(MaxAlign, getStackAlignment()));
+    Offset = alignTo(Offset + MFI->getMaxCallFrameSize(),
+                     std::max(MaxAlign, getStackAlignment()));
 
-  return RoundUpToAlignment(Offset, getStackAlignment());
+  return alignTo(Offset, getStackAlignment());
 }
 
 // Eliminate ADJCALLSTACKDOWN, ADJCALLSTACKUP pseudo instructions
diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp
index 5680130b91b..694ff9b4943 100644
--- a/lib/Target/Mips/MipsISelLowering.cpp
+++ b/lib/Target/Mips/MipsISelLowering.cpp
@@ -1873,10 +1873,10 @@ SDValue MipsTargetLowering::lowerVAARG(SDValue Op, SelectionDAG &DAG) const {
   auto &TD = DAG.getDataLayout();
   unsigned ArgSizeInBytes =
       TD.getTypeAllocSize(VT.getTypeForEVT(*DAG.getContext()));
-  SDValue Tmp3 = DAG.getNode(ISD::ADD, DL, VAList.getValueType(), VAList,
-                             DAG.getConstant(RoundUpToAlignment(ArgSizeInBytes,
-                                                            ArgSlotSizeInBytes),
-                                             DL, VAList.getValueType()));
+  SDValue Tmp3 =
+      DAG.getNode(ISD::ADD, DL, VAList.getValueType(), VAList,
+                  DAG.getConstant(alignTo(ArgSizeInBytes, ArgSlotSizeInBytes),
+                                  DL, VAList.getValueType()));
   // Store the incremented VAList to the legalized pointer
   Chain = DAG.getStore(VAListLoad.getValue(1), DL, Tmp3, VAListPtr,
                       MachinePointerInfo(SV), false, false, 0);
@@ -2604,7 +2604,7 @@ MipsTargetLowering::LowerCall(TargetLowering::CallLoweringInfo &CLI,
   // ByValChain is the output chain of the last Memcpy node created for copying
   // byval arguments to the stack.
   unsigned StackAlignment = TFL->getStackAlignment();
-  NextStackOffset = RoundUpToAlignment(NextStackOffset, StackAlignment);
+  NextStackOffset = alignTo(NextStackOffset, StackAlignment);
   SDValue NextStackOffsetVal = DAG.getIntPtrConstant(NextStackOffset, DL, true);
 
   if (!IsTailCall)
@@ -3787,8 +3787,7 @@ void MipsTargetLowering::writeVarArgRegs(std::vector<SDValue> &OutChains,
   int VaArgOffset;
 
   if (ArgRegs.size() == Idx)
-    VaArgOffset =
-        RoundUpToAlignment(State.getNextStackOffset(), RegSizeInBytes);
+    VaArgOffset = alignTo(State.getNextStackOffset(), RegSizeInBytes);
   else {
     VaArgOffset =
         (int)ABI.GetCalleeAllocdArgSizeInBytes(State.getCallingConv()) -
@@ -3854,7 +3853,7 @@ void MipsTargetLowering::HandleByVal(CCState *State, unsigned &Size,
     }
 
     // Mark the registers allocated.
-    Size = RoundUpToAlignment(Size, RegSizeInBytes);
+    Size = alignTo(Size, RegSizeInBytes);
     for (unsigned I = FirstReg; Size > 0 && (I < IntArgRegs.size());
          Size -= RegSizeInBytes, ++I, ++NumRegs)
       State->AllocateReg(IntArgRegs[I], ShadowRegs[I]);
diff --git a/lib/Target/Sparc/SparcFrameLowering.cpp b/lib/Target/Sparc/SparcFrameLowering.cpp
index 39b5e809c9b..348af439e29 100644
--- a/lib/Target/Sparc/SparcFrameLowering.cpp
+++ b/lib/Target/Sparc/SparcFrameLowering.cpp
@@ -146,7 +146,7 @@ void SparcFrameLowering::emitPrologue(MachineFunction &MF,
   // Finally, ensure that the size is sufficiently aligned for the
   // data on the stack.
   if (MFI->getMaxAlignment() > 0) {
-    NumBytes = RoundUpToAlignment(NumBytes, MFI->getMaxAlignment());
+    NumBytes = alignTo(NumBytes, MFI->getMaxAlignment());
   }
 
   // Update stack size with corrected value.
diff --git a/lib/Target/Sparc/SparcISelLowering.cpp b/lib/Target/Sparc/SparcISelLowering.cpp
index 5e70ffe2223..d78633f567d 100644
--- a/lib/Target/Sparc/SparcISelLowering.cpp
+++ b/lib/Target/Sparc/SparcISelLowering.cpp
@@ -1131,7 +1131,7 @@ SparcTargetLowering::LowerCall_64(TargetLowering::CallLoweringInfo &CLI,
   unsigned ArgsSize = std::max(6*8u, CCInfo.getNextStackOffset());
 
   // Keep stack frames 16-byte aligned.
-  ArgsSize = RoundUpToAlignment(ArgsSize, 16);
+  ArgsSize = alignTo(ArgsSize, 16);
 
   // Varargs calls require special treatment.
   if (CLI.IsVarArg)
diff --git a/lib/Target/Sparc/SparcSubtarget.cpp b/lib/Target/Sparc/SparcSubtarget.cpp
index d701594d27a..69cf294aeed 100644
--- a/lib/Target/Sparc/SparcSubtarget.cpp
+++ b/lib/Target/Sparc/SparcSubtarget.cpp
@@ -64,7 +64,7 @@ int SparcSubtarget::getAdjustedFrameSize(int frameSize) const {
     frameSize += 128;
     // Frames with calls must also reserve space for 6 outgoing arguments
     // whether they are used or not. LowerCall_64 takes care of that.
-    frameSize = RoundUpToAlignment(frameSize, 16);
+    frameSize = alignTo(frameSize, 16);
   } else {
     // Emit the correct save instruction based on the number of bytes in
     // the frame. Minimum stack frame size according to V8 ABI is:
@@ -77,7 +77,7 @@ int SparcSubtarget::getAdjustedFrameSize(int frameSize) const {
 
     // Round up to next doubleword boundary -- a double-word boundary
     // is required by the ABI.
-    frameSize = RoundUpToAlignment(frameSize, 8);
+    frameSize = alignTo(frameSize, 8);
   }
   return frameSize;
 }
diff --git a/lib/Target/WebAssembly/WebAssemblyPEI.cpp b/lib/Target/WebAssembly/WebAssemblyPEI.cpp
index d570d426611..d00ae703951 100644
--- a/lib/Target/WebAssembly/WebAssemblyPEI.cpp
+++ b/lib/Target/WebAssembly/WebAssemblyPEI.cpp
@@ -528,7 +528,7 @@ AdjustStackOffset(MachineFrameInfo *MFI, int FrameIdx,
   MaxAlign = std::max(MaxAlign, Align);
 
   // Adjust to alignment boundary.
-  Offset = RoundUpToAlignment(Offset, Align, Skew);
+  Offset = alignTo(Offset, Align, Skew);
 
   if (StackGrowsDown) {
     DEBUG(dbgs() << "alloc FI(" << FrameIdx << ") at SP[" << -Offset << "]\n");
@@ -612,7 +612,7 @@ void WasmPEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
 
       unsigned Align = MFI->getObjectAlignment(i);
       // Adjust to alignment boundary
-      Offset = RoundUpToAlignment(Offset, Align, Skew);
+      Offset = alignTo(Offset, Align, Skew);
 
       MFI->setObjectOffset(i, -Offset);        // Set the computed offset
     }
@@ -621,7 +621,7 @@ void WasmPEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
     for (int i = MaxCSFI; i >= MinCSFI ; --i) {
       unsigned Align = MFI->getObjectAlignment(i);
       // Adjust to alignment boundary
-      Offset = RoundUpToAlignment(Offset, Align, Skew);
+      Offset = alignTo(Offset, Align, Skew);
 
       MFI->setObjectOffset(i, Offset);
       Offset += MFI->getObjectSize(i);
@@ -654,7 +654,7 @@ void WasmPEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
     unsigned Align = MFI->getLocalFrameMaxAlign();
 
     // Adjust to alignment boundary.
-    Offset = RoundUpToAlignment(Offset, Align, Skew);
+    Offset = alignTo(Offset, Align, Skew);
 
     DEBUG(dbgs() << "Local frame base offset: " << Offset << "\n");
 
@@ -773,7 +773,7 @@ void WasmPEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
     // If the frame pointer is eliminated, all frame offsets will be relative to
     // SP not FP. Align to MaxAlign so this works.
     StackAlign = std::max(StackAlign, MaxAlign);
-    Offset = RoundUpToAlignment(Offset, StackAlign, Skew);
+    Offset = alignTo(Offset, StackAlign, Skew);
   }
 
   // Update frame info to pretend that this is part of the stack...
diff --git a/lib/Target/X86/X86FrameLowering.cpp b/lib/Target/X86/X86FrameLowering.cpp
index 8632bb8254f..8f21fb49728 100644
--- a/lib/Target/X86/X86FrameLowering.cpp
+++ b/lib/Target/X86/X86FrameLowering.cpp
@@ -1010,7 +1010,7 @@ void X86FrameLowering::emitPrologue(MachineFunction &MF,
 
     // Callee-saved registers are pushed on stack before the stack is realigned.
     if (TRI->needsStackRealignment(MF) && !IsWin64Prologue)
-      NumBytes = RoundUpToAlignment(NumBytes, MaxAlign);
+      NumBytes = alignTo(NumBytes, MaxAlign);
 
     // Get the offset of the stack slot for the EBP register, which is
     // guaranteed to be the last slot by processFunctionBeforeFrameFinalized.
@@ -1131,7 +1131,7 @@ void X86FrameLowering::emitPrologue(MachineFunction &MF,
   // virtual memory manager are allocated in correct sequence.
   uint64_t AlignedNumBytes = NumBytes;
   if (IsWin64Prologue && !IsFunclet && TRI->needsStackRealignment(MF))
-    AlignedNumBytes = RoundUpToAlignment(AlignedNumBytes, MaxAlign);
+    AlignedNumBytes = alignTo(AlignedNumBytes, MaxAlign);
   if (AlignedNumBytes >= StackProbeSize && UseStackProbe) {
     // Check whether EAX is livein for this function.
     bool isEAXAlive = isEAXLiveIn(MF);
@@ -1430,8 +1430,7 @@ X86FrameLowering::getWinEHFuncletFrameSize(const MachineFunction &MF) const {
   // RBP is not included in the callee saved register block. After pushing RBP,
   // everything is 16 byte aligned. Everything we allocate before an outgoing
   // call must also be 16 byte aligned.
-  unsigned FrameSizeMinusRBP =
-      RoundUpToAlignment(CSSize + UsedSize, getStackAlignment());
+  unsigned FrameSizeMinusRBP = alignTo(CSSize + UsedSize, getStackAlignment());
   // Subtract out the size of the callee saved registers. This is how much stack
   // each funclet will allocate.
   return FrameSizeMinusRBP - CSSize;
@@ -1491,7 +1490,7 @@ void X86FrameLowering::emitEpilogue(MachineFunction &MF,
     // Callee-saved registers were pushed on stack before the stack was
     // realigned.
     if (TRI->needsStackRealignment(MF) && !IsWin64Prologue)
-      NumBytes = RoundUpToAlignment(FrameSize, MaxAlign);
+      NumBytes = alignTo(FrameSize, MaxAlign);
 
     // Pop EBP.
     BuildMI(MBB, MBBI, DL,
@@ -2480,7 +2479,7 @@ eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
     // amount of space needed for the outgoing arguments up to the next
     // alignment boundary.
     unsigned StackAlign = getStackAlignment();
-    Amount = RoundUpToAlignment(Amount, StackAlign);
+    Amount = alignTo(Amount, StackAlign);
 
     MachineModuleInfo &MMI = MF.getMMI();
     const Function *Fn = MF.getFunction();
diff --git a/lib/Target/XCore/XCoreISelLowering.cpp b/lib/Target/XCore/XCoreISelLowering.cpp
index 105b2cfb1be..38e6df06bd0 100644
--- a/lib/Target/XCore/XCoreISelLowering.cpp
+++ b/lib/Target/XCore/XCoreISelLowering.cpp
@@ -381,7 +381,7 @@ lowerLoadWordFromAlignedBasePlusOffset(SDLoc DL, SDValue Chain, SDValue Base,
                        false, false, 0);
   }
   // Lower to pair of consecutive word aligned loads plus some bit shifting.
-  int32_t HighOffset = RoundUpToAlignment(Offset, 4);
+  int32_t HighOffset = alignTo(Offset, 4);
   int32_t LowOffset = HighOffset - 4;
   SDValue LowAddr, HighAddr;
   if (GlobalAddressSDNode *GASD =
diff --git a/lib/Transforms/IPO/LowerBitSets.cpp b/lib/Transforms/IPO/LowerBitSets.cpp
index 7b515745c31..92eaf9fe87f 100644
--- a/lib/Transforms/IPO/LowerBitSets.cpp
+++ b/lib/Transforms/IPO/LowerBitSets.cpp
@@ -544,7 +544,7 @@ void LowerBitSets::buildBitSetsFromGlobalVariables(
     // Cap at 128 was found experimentally to have a good data/instruction
     // overhead tradeoff.
     if (Padding > 128)
-      Padding = RoundUpToAlignment(InitSize, 128) - InitSize;
+      Padding = alignTo(InitSize, 128) - InitSize;
 
     GlobalInits.push_back(
         ConstantAggregateZero::get(ArrayType::get(Int8Ty, Padding)));
diff --git a/lib/Transforms/Instrumentation/MemorySanitizer.cpp b/lib/Transforms/Instrumentation/MemorySanitizer.cpp
index 34aaa7f27d6..dda01d1a572 100644
--- a/lib/Transforms/Instrumentation/MemorySanitizer.cpp
+++ b/lib/Transforms/Instrumentation/MemorySanitizer.cpp
@@ -1142,7 +1142,7 @@ struct MemorySanitizerVisitor : public InstVisitor<MemorySanitizerVisitor> {
             setOrigin(A, getCleanOrigin());
           }
         }
-        ArgOffset += RoundUpToAlignment(Size, kShadowTLSAlignment);
+        ArgOffset += alignTo(Size, kShadowTLSAlignment);
       }
       assert(*ShadowPtr && "Could not find shadow for an argument");
       return *ShadowPtr;
@@ -2498,7 +2498,7 @@ struct MemorySanitizerVisitor : public InstVisitor<MemorySanitizerVisitor> {
       (void)Store;
       assert(Size != 0 && Store != nullptr);
       DEBUG(dbgs() << "  Param:" << *Store << "\n");
-      ArgOffset += RoundUpToAlignment(Size, 8);
+      ArgOffset += alignTo(Size, 8);
     }
     DEBUG(dbgs() << "  done with call args\n");
 
@@ -2818,7 +2818,7 @@ struct VarArgAMD64Helper : public VarArgHelper {
         Type *RealTy = A->getType()->getPointerElementType();
         uint64_t ArgSize = DL.getTypeAllocSize(RealTy);
         Value *Base = getShadowPtrForVAArgument(RealTy, IRB, OverflowOffset);
-        OverflowOffset += RoundUpToAlignment(ArgSize, 8);
+        OverflowOffset += alignTo(ArgSize, 8);
         IRB.CreateMemCpy(Base, MSV.getShadowPtr(A, IRB.getInt8Ty(), IRB),
                          ArgSize, kShadowTLSAlignment);
       } else {
@@ -2840,7 +2840,7 @@ struct VarArgAMD64Helper : public VarArgHelper {
           case AK_Memory:
             uint64_t ArgSize = DL.getTypeAllocSize(A->getType());
             Base = getShadowPtrForVAArgument(A->getType(), IRB, OverflowOffset);
-            OverflowOffset += RoundUpToAlignment(ArgSize, 8);
+            OverflowOffset += alignTo(ArgSize, 8);
         }
         IRB.CreateAlignedStore(MSV.getShadow(A), Base, kShadowTLSAlignment);
       }
@@ -2965,7 +2965,7 @@ struct VarArgMIPS64Helper : public VarArgHelper {
 #endif
       Base = getShadowPtrForVAArgument(A->getType(), IRB, VAArgOffset);
       VAArgOffset += ArgSize;
-      VAArgOffset = RoundUpToAlignment(VAArgOffset, 8);
+      VAArgOffset = alignTo(VAArgOffset, 8);
       IRB.CreateAlignedStore(MSV.getShadow(A), Base, kShadowTLSAlignment);
     }
 
@@ -3110,7 +3110,7 @@ struct VarArgAArch64Helper : public VarArgHelper {
         case AK_Memory:
           uint64_t ArgSize = DL.getTypeAllocSize(A->getType());
           Base = getShadowPtrForVAArgument(A->getType(), IRB, OverflowOffset);
-          OverflowOffset += RoundUpToAlignment(ArgSize, 8);
+          OverflowOffset += alignTo(ArgSize, 8);
           break;
       }
       IRB.CreateAlignedStore(MSV.getShadow(A), Base, kShadowTLSAlignment);
diff --git a/lib/Transforms/Instrumentation/SafeStack.cpp b/lib/Transforms/Instrumentation/SafeStack.cpp
index abed465f102..ee8d4fad752 100644
--- a/lib/Transforms/Instrumentation/SafeStack.cpp
+++ b/lib/Transforms/Instrumentation/SafeStack.cpp
@@ -534,7 +534,7 @@ Value *SafeStack::moveStaticAllocasToUnsafeStack(
     // Add alignment.
     // NOTE: we ensure that BasePointer itself is aligned to >= Align.
     StaticOffset += Size;
-    StaticOffset = RoundUpToAlignment(StaticOffset, Align);
+    StaticOffset = alignTo(StaticOffset, Align);
 
     Value *Off = IRB.CreateGEP(BasePointer, // BasePointer is i8*
                                ConstantInt::get(Int32Ty, -StaticOffset));
@@ -565,7 +565,7 @@ Value *SafeStack::moveStaticAllocasToUnsafeStack(
     // Add alignment.
     // NOTE: we ensure that BasePointer itself is aligned to >= Align.
     StaticOffset += Size;
-    StaticOffset = RoundUpToAlignment(StaticOffset, Align);
+    StaticOffset = alignTo(StaticOffset, Align);
 
     Value *Off = IRB.CreateGEP(BasePointer, // BasePointer is i8*
                                ConstantInt::get(Int32Ty, -StaticOffset));
@@ -582,7 +582,7 @@ Value *SafeStack::moveStaticAllocasToUnsafeStack(
   // Re-align BasePointer so that our callees would see it aligned as
   // expected.
   // FIXME: no need to update BasePointer in leaf functions.
-  StaticOffset = RoundUpToAlignment(StaticOffset, StackAlignment);
+  StaticOffset = alignTo(StaticOffset, StackAlignment);
 
   // Update shadow stack pointer in the function epilogue.
   IRB.SetInsertPoint(BasePointer->getNextNode());
diff --git a/lib/Transforms/Instrumentation/SanitizerCoverage.cpp b/lib/Transforms/Instrumentation/SanitizerCoverage.cpp
index 09de7a2cda2..82a070843bf 100644
--- a/lib/Transforms/Instrumentation/SanitizerCoverage.cpp
+++ b/lib/Transforms/Instrumentation/SanitizerCoverage.cpp
@@ -253,8 +253,7 @@ bool SanitizerCoverageModule::runOnModule(Module &M) {
   if (Options.Use8bitCounters) {
     // Make sure the array is 16-aligned.
     static const int kCounterAlignment = 16;
-    Type *Int8ArrayNTy =
-        ArrayType::get(Int8Ty, RoundUpToAlignment(N, kCounterAlignment));
+    Type *Int8ArrayNTy = ArrayType::get(Int8Ty, alignTo(N, kCounterAlignment));
     RealEightBitCounterArray = new GlobalVariable(
         M, Int8ArrayNTy, false, GlobalValue::PrivateLinkage,
         Constant::getNullValue(Int8ArrayNTy), "__sancov_gen_cov_counter");
diff --git a/lib/Transforms/Utils/ASanStackFrameLayout.cpp b/lib/Transforms/Utils/ASanStackFrameLayout.cpp
index 409326eba40..7e50d4bb447 100644
--- a/lib/Transforms/Utils/ASanStackFrameLayout.cpp
+++ b/lib/Transforms/Utils/ASanStackFrameLayout.cpp
@@ -44,7 +44,7 @@ static size_t VarAndRedzoneSize(size_t Size, size_t Alignment) {
   else if (Size <= 512) Res = Size + 64;
   else if (Size <= 4096) Res = Size + 128;
   else                   Res = Size + 256;
-  return RoundUpToAlignment(Res, Alignment);
+  return alignTo(Res, Alignment);
 }
 
 void
diff --git a/tools/dsymutil/MachOUtils.cpp b/tools/dsymutil/MachOUtils.cpp
index 44cc528ed8f..628c1b6380a 100644
--- a/tools/dsymutil/MachOUtils.cpp
+++ b/tools/dsymutil/MachOUtils.cpp
@@ -241,7 +241,7 @@ static void transferSegmentAndSections(
   // start address leave a sufficient gap to store the __DWARF
   // segment.
   uint64_t PrevEndAddress = EndAddress;
-  EndAddress = RoundUpToAlignment(EndAddress, 0x1000);
+  EndAddress = alignTo(EndAddress, 0x1000);
   if (GapForDwarf == UINT64_MAX && Segment.vmaddr > EndAddress &&
       Segment.vmaddr - EndAddress >= DwarfSegmentSize)
     GapForDwarf = EndAddress;
@@ -268,8 +268,8 @@ static void createDwarfSegment(uint64_t VMAddr, uint64_t FileOffset,
                                uint64_t FileSize, unsigned NumSections,
                                MCAsmLayout &Layout, MachObjectWriter &Writer) {
   Writer.writeSegmentLoadCommand("__DWARF", NumSections, VMAddr,
-                                 RoundUpToAlignment(FileSize, 0x1000),
-                                 FileOffset, FileSize, /* MaxProt */ 7,
+                                 alignTo(FileSize, 0x1000), FileOffset,
+                                 FileSize, /* MaxProt */ 7,
                                  /* InitProt =*/3);
 
   for (unsigned int i = 0, n = Layout.getSectionOrder().size(); i != n; ++i) {
@@ -279,8 +279,8 @@ static void createDwarfSegment(uint64_t VMAddr, uint64_t FileOffset,
 
     unsigned Align = Sec->getAlignment();
     if (Align > 1) {
-      VMAddr = RoundUpToAlignment(VMAddr, Align);
-      FileOffset = RoundUpToAlignment(FileOffset, Align);
+      VMAddr = alignTo(VMAddr, Align);
+      FileOffset = alignTo(FileOffset, Align);
     }
     Writer.writeSection(Layout, *Sec, VMAddr, FileOffset, 0, 0, 0);
 
@@ -394,8 +394,7 @@ bool generateDsymCompanion(const DebugMap &DM, MCStreamer &MS,
       continue;
 
     if (uint64_t Size = Layout.getSectionFileSize(Sec)) {
-      DwarfSegmentSize =
-          RoundUpToAlignment(DwarfSegmentSize, Sec->getAlignment());
+      DwarfSegmentSize = alignTo(DwarfSegmentSize, Sec->getAlignment());
       DwarfSegmentSize += Size;
       ++NumDwarfSections;
     }
@@ -419,7 +418,7 @@ bool generateDsymCompanion(const DebugMap &DM, MCStreamer &MS,
 
   uint64_t SymtabStart = LoadCommandSize;
   SymtabStart += HeaderSize;
-  SymtabStart = RoundUpToAlignment(SymtabStart, 0x1000);
+  SymtabStart = alignTo(SymtabStart, 0x1000);
 
   // We gathered all the information we need, start emitting the output file.
   Writer.writeHeader(MachO::MH_DSYM, NumLoadCommands, LoadCommandSize, false);
@@ -441,7 +440,7 @@ bool generateDsymCompanion(const DebugMap &DM, MCStreamer &MS,
                                   NewStringsSize);
 
   uint64_t DwarfSegmentStart = StringStart + NewStringsSize;
-  DwarfSegmentStart = RoundUpToAlignment(DwarfSegmentStart, 0x1000);
+  DwarfSegmentStart = alignTo(DwarfSegmentStart, 0x1000);
 
   // Write the load commands for the segments and sections we 'import' from
   // the original binary.
@@ -460,7 +459,7 @@ bool generateDsymCompanion(const DebugMap &DM, MCStreamer &MS,
                                  DwarfSegmentSize, GapForDwarf, EndAddress);
   }
 
-  uint64_t DwarfVMAddr = RoundUpToAlignment(EndAddress, 0x1000);
+  uint64_t DwarfVMAddr = alignTo(EndAddress, 0x1000);
   uint64_t DwarfVMMax = Is64Bit ? UINT64_MAX : UINT32_MAX;
   if (DwarfVMAddr + DwarfSegmentSize > DwarfVMMax ||
       DwarfVMAddr + DwarfSegmentSize < DwarfVMAddr /* Overflow */) {
@@ -510,7 +509,7 @@ bool generateDsymCompanion(const DebugMap &DM, MCStreamer &MS,
       continue;
 
     uint64_t Pos = OutFile.tell();
-    Writer.WriteZeros(RoundUpToAlignment(Pos, Sec.getAlignment()) - Pos);
+    Writer.WriteZeros(alignTo(Pos, Sec.getAlignment()) - Pos);
     MCAsm.writeSectionData(&Sec, Layout);
   }
 
diff --git a/tools/llvm-pdbdump/llvm-pdbdump.cpp b/tools/llvm-pdbdump/llvm-pdbdump.cpp
index 0e3f0b281fe..887eb14aee9 100644
--- a/tools/llvm-pdbdump/llvm-pdbdump.cpp
+++ b/tools/llvm-pdbdump/llvm-pdbdump.cpp
@@ -184,7 +184,7 @@ static std::error_code getObject(const T *&Obj, MemoryBufferRef M,
 }
 
 static uint64_t bytesToBlocks(uint64_t NumBytes, uint64_t BlockSize) {
-  return RoundUpToAlignment(NumBytes, BlockSize) / BlockSize;
+  return alignTo(NumBytes, BlockSize) / BlockSize;
 }
 
 static uint64_t blockToOffset(uint64_t BlockNumber, uint64_t BlockSize) {
diff --git a/tools/llvm-readobj/COFFDumper.cpp b/tools/llvm-readobj/COFFDumper.cpp
index b600fa63261..cb444be729e 100644
--- a/tools/llvm-readobj/COFFDumper.cpp
+++ b/tools/llvm-readobj/COFFDumper.cpp
@@ -982,7 +982,7 @@ void COFFDumper::printCodeViewSymbolSection(StringRef SectionName,
     // the next subsection.
     size_t SectionOffset = Data.data() - SectionContents.data();
     size_t NextOffset = SectionOffset + SubSectionSize;
-    NextOffset = RoundUpToAlignment(NextOffset, 4);
+    NextOffset = alignTo(NextOffset, 4);
     Data = SectionContents.drop_front(NextOffset);
 
     // Optionally print the subsection bytes in case our parsing gets confused
diff --git a/tools/llvm-rtdyld/llvm-rtdyld.cpp b/tools/llvm-rtdyld/llvm-rtdyld.cpp
index 6ee3a44b63b..58c56f5cae4 100644
--- a/tools/llvm-rtdyld/llvm-rtdyld.cpp
+++ b/tools/llvm-rtdyld/llvm-rtdyld.cpp
@@ -191,7 +191,7 @@ public:
   }
 
   uint8_t *allocateFromSlab(uintptr_t Size, unsigned Alignment, bool isCode) {
-    Size = RoundUpToAlignment(Size, Alignment);
+    Size = alignTo(Size, Alignment);
     if (CurrentSlabOffset + Size > SlabSize)
       report_fatal_error("Can't allocate enough memory. Tune --preallocate");
 
diff --git a/tools/yaml2obj/yaml2coff.cpp b/tools/yaml2obj/yaml2coff.cpp
index 61d98519255..9a0c92f2e6f 100644
--- a/tools/yaml2obj/yaml2coff.cpp
+++ b/tools/yaml2obj/yaml2coff.cpp
@@ -173,12 +173,12 @@ static bool layoutCOFF(COFFParser &CP) {
   // Assign each section data address consecutively.
   for (COFFYAML::Section &S : CP.Obj.Sections) {
     if (S.SectionData.binary_size() > 0) {
-      CurrentSectionDataOffset = RoundUpToAlignment(
-          CurrentSectionDataOffset, CP.isPE() ? CP.getFileAlignment() : 4);
+      CurrentSectionDataOffset = alignTo(CurrentSectionDataOffset,
+                                         CP.isPE() ? CP.getFileAlignment() : 4);
       S.Header.SizeOfRawData = S.SectionData.binary_size();
       if (CP.isPE())
         S.Header.SizeOfRawData =
-            RoundUpToAlignment(S.Header.SizeOfRawData, CP.getFileAlignment());
+            alignTo(S.Header.SizeOfRawData, CP.getFileAlignment());
       S.Header.PointerToRawData = CurrentSectionDataOffset;
       CurrentSectionDataOffset += S.Header.SizeOfRawData;
       if (!S.Relocations.empty()) {
@@ -292,10 +292,9 @@ static uint32_t initializeOptionalHeader(COFFParser &CP, uint16_t Magic, T Heade
   Header->FileAlignment = CP.Obj.OptionalHeader->Header.FileAlignment;
   uint32_t SizeOfCode = 0, SizeOfInitializedData = 0,
            SizeOfUninitializedData = 0;
-  uint32_t SizeOfHeaders = RoundUpToAlignment(
-      CP.SectionTableStart + CP.SectionTableSize, Header->FileAlignment);
-  uint32_t SizeOfImage =
-      RoundUpToAlignment(SizeOfHeaders, Header->SectionAlignment);
+  uint32_t SizeOfHeaders = alignTo(CP.SectionTableStart + CP.SectionTableSize,
+                                   Header->FileAlignment);
+  uint32_t SizeOfImage = alignTo(SizeOfHeaders, Header->SectionAlignment);
   uint32_t BaseOfData = 0;
   for (const COFFYAML::Section &S : CP.Obj.Sections) {
     if (S.Header.Characteristics & COFF::IMAGE_SCN_CNT_CODE)
@@ -309,8 +308,7 @@ static uint32_t initializeOptionalHeader(COFFParser &CP, uint16_t Magic, T Heade
     else if (S.Name.equals(".data"))
       BaseOfData = S.Header.VirtualAddress; // RVA
     if (S.Header.VirtualAddress)
-      SizeOfImage +=
-          RoundUpToAlignment(S.Header.VirtualSize, Header->SectionAlignment);
+      SizeOfImage += alignTo(S.Header.VirtualSize, Header->SectionAlignment);
   }
   Header->SizeOfCode = SizeOfCode;
   Header->SizeOfInitializedData = SizeOfInitializedData;
diff --git a/tools/yaml2obj/yaml2elf.cpp b/tools/yaml2obj/yaml2elf.cpp
index d03986e9c88..2839afe9096 100644
--- a/tools/yaml2obj/yaml2elf.cpp
+++ b/tools/yaml2obj/yaml2elf.cpp
@@ -38,7 +38,7 @@ class ContiguousBlobAccumulator {
     if (Align == 0)
       Align = 1;
     uint64_t CurrentOffset = InitialOffset + OS.tell();
-    uint64_t AlignedOffset = RoundUpToAlignment(CurrentOffset, Align);
+    uint64_t AlignedOffset = alignTo(CurrentOffset, Align);
     for (; CurrentOffset != AlignedOffset; ++CurrentOffset)
       OS.write('\0');
     return AlignedOffset; // == CurrentOffset;
diff --git a/unittests/Support/MathExtrasTest.cpp b/unittests/Support/MathExtrasTest.cpp
index 97309f8d31f..af37a65e42a 100644
--- a/unittests/Support/MathExtrasTest.cpp
+++ b/unittests/Support/MathExtrasTest.cpp
@@ -179,15 +179,15 @@ TEST(MathExtras, NextPowerOf2) {
   EXPECT_EQ(256u, NextPowerOf2(128));
 }
 
-TEST(MathExtras, RoundUpToAlignment) {
-  EXPECT_EQ(8u, RoundUpToAlignment(5, 8));
-  EXPECT_EQ(24u, RoundUpToAlignment(17, 8));
-  EXPECT_EQ(0u, RoundUpToAlignment(~0LL, 8));
+TEST(MathExtras, alignTo) {
+  EXPECT_EQ(8u, alignTo(5, 8));
+  EXPECT_EQ(24u, alignTo(17, 8));
+  EXPECT_EQ(0u, alignTo(~0LL, 8));
 
-  EXPECT_EQ(7u, RoundUpToAlignment(5, 8, 7));
-  EXPECT_EQ(17u, RoundUpToAlignment(17, 8, 1));
-  EXPECT_EQ(3u, RoundUpToAlignment(~0LL, 8, 3));
-  EXPECT_EQ(552u, RoundUpToAlignment(321, 255, 42));
+  EXPECT_EQ(7u, alignTo(5, 8, 7));
+  EXPECT_EQ(17u, alignTo(17, 8, 1));
+  EXPECT_EQ(3u, alignTo(~0LL, 8, 3));
+  EXPECT_EQ(552u, alignTo(321, 255, 42));
 }
 
 template<typename T>
diff --git a/unittests/Support/TrailingObjectsTest.cpp b/unittests/Support/TrailingObjectsTest.cpp
index 866ff1e6e88..170cbc372b8 100644
--- a/unittests/Support/TrailingObjectsTest.cpp
+++ b/unittests/Support/TrailingObjectsTest.cpp
@@ -118,8 +118,8 @@ TEST(TrailingObjects, TwoArg) {
   Class2 *C1 = Class2::create(4);
   Class2 *C2 = Class2::create(0, 4.2);
 
-  EXPECT_EQ(sizeof(Class2), llvm::RoundUpToAlignment(sizeof(bool) * 2,
-                                                     llvm::alignOf<double>()));
+  EXPECT_EQ(sizeof(Class2),
+            llvm::alignTo(sizeof(bool) * 2, llvm::alignOf<double>()));
   EXPECT_EQ(llvm::alignOf<Class2>(), llvm::alignOf<double>());
 
   EXPECT_EQ((Class2::additionalSizeToAlloc<double, short>(1, 0)),
@@ -162,8 +162,7 @@ class Class3 final : public TrailingObjects<Class3, double, short, bool> {
 TEST(TrailingObjects, ThreeArg) {
   EXPECT_EQ((Class3::additionalSizeToAlloc<double, short, bool>(1, 1, 3)),
             sizeof(double) + sizeof(short) + 3 * sizeof(bool));
-  EXPECT_EQ(sizeof(Class3),
-            llvm::RoundUpToAlignment(1, llvm::alignOf<double>()));
+  EXPECT_EQ(sizeof(Class3), llvm::alignTo(1, llvm::alignOf<double>()));
   std::unique_ptr<char[]> P(new char[1000]);
   Class3 *C = reinterpret_cast<Class3 *>(P.get());
   EXPECT_EQ(C->getTrailingObjects<double>(), reinterpret_cast<double *>(C + 1));
@@ -183,8 +182,8 @@ class Class4 final : public TrailingObjects<Class4, char, long> {
 
 TEST(TrailingObjects, Realignment) {
   EXPECT_EQ((Class4::additionalSizeToAlloc<char, long>(1, 1)),
-            llvm::RoundUpToAlignment(sizeof(long) + 1, llvm::alignOf<long>()));
-  EXPECT_EQ(sizeof(Class4), llvm::RoundUpToAlignment(1, llvm::alignOf<long>()));
+            llvm::alignTo(sizeof(long) + 1, llvm::alignOf<long>()));
+  EXPECT_EQ(sizeof(Class4), llvm::alignTo(1, llvm::alignOf<long>()));
   std::unique_ptr<char[]> P(new char[1000]);
   Class4 *C = reinterpret_cast<Class4 *>(P.get());
   EXPECT_EQ(C->getTrailingObjects<char>(), reinterpret_cast<char *>(C + 1));