[AST] Change return type of getTypeInfoInChars to a proper struct instead of std::pair.

Followup to D85191.

This changes getTypeInfoInChars to return a TypeInfoChars
struct instead of a std::pair of CharUnits. This lets the
interface match getTypeInfo more closely.

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D86447
diff --git a/clang/lib/CodeGen/CGAtomic.cpp b/clang/lib/CodeGen/CGAtomic.cpp
index a640cb7..c7256e2 100644
--- a/clang/lib/CodeGen/CGAtomic.cpp
+++ b/clang/lib/CodeGen/CGAtomic.cpp
@@ -806,13 +806,12 @@
     return RValue::get(nullptr);
   }
 
-  CharUnits sizeChars, alignChars;
-  std::tie(sizeChars, alignChars) = getContext().getTypeInfoInChars(AtomicTy);
-  uint64_t Size = sizeChars.getQuantity();
+  auto TInfo = getContext().getTypeInfoInChars(AtomicTy);
+  uint64_t Size = TInfo.Width.getQuantity();
   unsigned MaxInlineWidthInBits = getTarget().getMaxAtomicInlineWidth();
 
-  bool Oversized = getContext().toBits(sizeChars) > MaxInlineWidthInBits;
-  bool Misaligned = (Ptr.getAlignment() % sizeChars) != 0;
+  bool Oversized = getContext().toBits(TInfo.Width) > MaxInlineWidthInBits;
+  bool Misaligned = (Ptr.getAlignment() % TInfo.Width) != 0;
   bool UseLibcall = Misaligned | Oversized;
   CharUnits MaxInlineWidth =
       getContext().toCharUnitsFromBits(MaxInlineWidthInBits);
@@ -821,13 +820,13 @@
 
   if (Misaligned) {
     Diags.Report(E->getBeginLoc(), diag::warn_atomic_op_misaligned)
-        << (int)sizeChars.getQuantity()
+        << (int)TInfo.Width.getQuantity()
         << (int)Ptr.getAlignment().getQuantity();
   }
 
   if (Oversized) {
     Diags.Report(E->getBeginLoc(), diag::warn_atomic_op_oversized)
-        << (int)sizeChars.getQuantity() << (int)MaxInlineWidth.getQuantity();
+        << (int)TInfo.Width.getQuantity() << (int)MaxInlineWidth.getQuantity();
   }
 
   llvm::Value *Order = EmitScalarExpr(E->getOrder());
@@ -1080,7 +1079,7 @@
               EmitCastToVoidPtr(Val1.getPointer()), E->getVal1()->getType())),
           getContext().VoidPtrTy);
       AddDirectArgument(*this, Args, UseOptimizedLibcall, Val2.getPointer(),
-                        MemTy, E->getExprLoc(), sizeChars);
+                        MemTy, E->getExprLoc(), TInfo.Width);
       Args.add(RValue::get(Order), getContext().IntTy);
       Order = OrderFail;
       break;
@@ -1093,7 +1092,7 @@
     case AtomicExpr::AO__atomic_exchange:
       LibCallName = "__atomic_exchange";
       AddDirectArgument(*this, Args, UseOptimizedLibcall, Val1.getPointer(),
-                        MemTy, E->getExprLoc(), sizeChars);
+                        MemTy, E->getExprLoc(), TInfo.Width);
       break;
     // void __atomic_store(size_t size, void *mem, void *val, int order)
     // void __atomic_store_N(T *mem, T val, int order)
@@ -1105,7 +1104,7 @@
       RetTy = getContext().VoidTy;
       HaveRetTy = true;
       AddDirectArgument(*this, Args, UseOptimizedLibcall, Val1.getPointer(),
-                        MemTy, E->getExprLoc(), sizeChars);
+                        MemTy, E->getExprLoc(), TInfo.Width);
       break;
     // void __atomic_load(size_t size, void *mem, void *return, int order)
     // T __atomic_load_N(T *mem, int order)
@@ -1125,7 +1124,7 @@
     case AtomicExpr::AO__atomic_fetch_add:
       LibCallName = "__atomic_fetch_add";
       AddDirectArgument(*this, Args, UseOptimizedLibcall, Val1.getPointer(),
-                        LoweredMemTy, E->getExprLoc(), sizeChars);
+                        LoweredMemTy, E->getExprLoc(), TInfo.Width);
       break;
     // T __atomic_and_fetch_N(T *mem, T val, int order)
     // T __atomic_fetch_and_N(T *mem, T val, int order)
@@ -1137,7 +1136,7 @@
     case AtomicExpr::AO__atomic_fetch_and:
       LibCallName = "__atomic_fetch_and";
       AddDirectArgument(*this, Args, UseOptimizedLibcall, Val1.getPointer(),
-                        MemTy, E->getExprLoc(), sizeChars);
+                        MemTy, E->getExprLoc(), TInfo.Width);
       break;
     // T __atomic_or_fetch_N(T *mem, T val, int order)
     // T __atomic_fetch_or_N(T *mem, T val, int order)
@@ -1149,7 +1148,7 @@
     case AtomicExpr::AO__atomic_fetch_or:
       LibCallName = "__atomic_fetch_or";
       AddDirectArgument(*this, Args, UseOptimizedLibcall, Val1.getPointer(),
-                        MemTy, E->getExprLoc(), sizeChars);
+                        MemTy, E->getExprLoc(), TInfo.Width);
       break;
     // T __atomic_sub_fetch_N(T *mem, T val, int order)
     // T __atomic_fetch_sub_N(T *mem, T val, int order)
@@ -1161,7 +1160,7 @@
     case AtomicExpr::AO__atomic_fetch_sub:
       LibCallName = "__atomic_fetch_sub";
       AddDirectArgument(*this, Args, UseOptimizedLibcall, Val1.getPointer(),
-                        LoweredMemTy, E->getExprLoc(), sizeChars);
+                        LoweredMemTy, E->getExprLoc(), TInfo.Width);
       break;
     // T __atomic_xor_fetch_N(T *mem, T val, int order)
     // T __atomic_fetch_xor_N(T *mem, T val, int order)
@@ -1173,7 +1172,7 @@
     case AtomicExpr::AO__atomic_fetch_xor:
       LibCallName = "__atomic_fetch_xor";
       AddDirectArgument(*this, Args, UseOptimizedLibcall, Val1.getPointer(),
-                        MemTy, E->getExprLoc(), sizeChars);
+                        MemTy, E->getExprLoc(), TInfo.Width);
       break;
     case AtomicExpr::AO__atomic_min_fetch:
       PostOpMinMax = true;
@@ -1185,7 +1184,7 @@
                         ? "__atomic_fetch_min"
                         : "__atomic_fetch_umin";
       AddDirectArgument(*this, Args, UseOptimizedLibcall, Val1.getPointer(),
-                        LoweredMemTy, E->getExprLoc(), sizeChars);
+                        LoweredMemTy, E->getExprLoc(), TInfo.Width);
       break;
     case AtomicExpr::AO__atomic_max_fetch:
       PostOpMinMax = true;
@@ -1197,7 +1196,7 @@
                         ? "__atomic_fetch_max"
                         : "__atomic_fetch_umax";
       AddDirectArgument(*this, Args, UseOptimizedLibcall, Val1.getPointer(),
-                        LoweredMemTy, E->getExprLoc(), sizeChars);
+                        LoweredMemTy, E->getExprLoc(), TInfo.Width);
       break;
     // T __atomic_nand_fetch_N(T *mem, T val, int order)
     // T __atomic_fetch_nand_N(T *mem, T val, int order)
@@ -1207,7 +1206,7 @@
     case AtomicExpr::AO__atomic_fetch_nand:
       LibCallName = "__atomic_fetch_nand";
       AddDirectArgument(*this, Args, UseOptimizedLibcall, Val1.getPointer(),
-                        MemTy, E->getExprLoc(), sizeChars);
+                        MemTy, E->getExprLoc(), TInfo.Width);
       break;
     }
 
@@ -1225,7 +1224,7 @@
         // Value is returned directly.
         // The function returns an appropriately sized integer type.
         RetTy = getContext().getIntTypeForBitwidth(
-            getContext().toBits(sizeChars), /*Signed=*/false);
+            getContext().toBits(TInfo.Width), /*Signed=*/false);
       } else {
         // Value is returned through parameter before the order.
         RetTy = getContext().VoidTy;
diff --git a/clang/lib/CodeGen/CGBlocks.cpp b/clang/lib/CodeGen/CGBlocks.cpp
index ee0c146..a4f09af 100644
--- a/clang/lib/CodeGen/CGBlocks.cpp
+++ b/clang/lib/CodeGen/CGBlocks.cpp
@@ -557,11 +557,10 @@
     // Theoretically, this could be in a different address space, so
     // don't assume standard pointer size/align.
     llvm::Type *llvmType = CGM.getTypes().ConvertType(thisType);
-    std::pair<CharUnits,CharUnits> tinfo
-      = CGM.getContext().getTypeInfoInChars(thisType);
-    maxFieldAlign = std::max(maxFieldAlign, tinfo.second);
+    auto TInfo = CGM.getContext().getTypeInfoInChars(thisType);
+    maxFieldAlign = std::max(maxFieldAlign, TInfo.Align);
 
-    layout.push_back(BlockLayoutChunk(tinfo.second, tinfo.first,
+    layout.push_back(BlockLayoutChunk(TInfo.Align, TInfo.Width,
                                       Qualifiers::OCL_None,
                                       nullptr, llvmType, thisType));
   }
diff --git a/clang/lib/CodeGen/CGCUDANV.cpp b/clang/lib/CodeGen/CGCUDANV.cpp
index b0b76ff..7c5ab39 100644
--- a/clang/lib/CodeGen/CGCUDANV.cpp
+++ b/clang/lib/CodeGen/CGCUDANV.cpp
@@ -354,14 +354,12 @@
   llvm::BasicBlock *EndBlock = CGF.createBasicBlock("setup.end");
   CharUnits Offset = CharUnits::Zero();
   for (const VarDecl *A : Args) {
-    CharUnits TyWidth, TyAlign;
-    std::tie(TyWidth, TyAlign) =
-        CGM.getContext().getTypeInfoInChars(A->getType());
-    Offset = Offset.alignTo(TyAlign);
+    auto TInfo = CGM.getContext().getTypeInfoInChars(A->getType());
+    Offset = Offset.alignTo(TInfo.Align);
     llvm::Value *Args[] = {
         CGF.Builder.CreatePointerCast(CGF.GetAddrOfLocalVar(A).getPointer(),
                                       VoidPtrTy),
-        llvm::ConstantInt::get(SizeTy, TyWidth.getQuantity()),
+        llvm::ConstantInt::get(SizeTy, TInfo.Width.getQuantity()),
         llvm::ConstantInt::get(SizeTy, Offset.getQuantity()),
     };
     llvm::CallBase *CB = CGF.EmitRuntimeCallOrInvoke(cudaSetupArgFn, Args);
@@ -370,7 +368,7 @@
     llvm::BasicBlock *NextBlock = CGF.createBasicBlock("setup.next");
     CGF.Builder.CreateCondBr(CBZero, NextBlock, EndBlock);
     CGF.EmitBlock(NextBlock);
-    Offset += TyWidth;
+    Offset += TInfo.Width;
   }
 
   // Emit the call to cudaLaunch
diff --git a/clang/lib/CodeGen/CGCall.cpp b/clang/lib/CodeGen/CGCall.cpp
index cb03e02..0d050dc 100644
--- a/clang/lib/CodeGen/CGCall.cpp
+++ b/clang/lib/CodeGen/CGCall.cpp
@@ -2285,8 +2285,8 @@
       auto PTy = ParamType->getPointeeType();
       if (!PTy->isIncompleteType() && PTy->isConstantSizeType()) {
         auto info = getContext().getTypeInfoInChars(PTy);
-        Attrs.addDereferenceableAttr(info.first.getQuantity());
-        Attrs.addAlignmentAttr(info.second.getAsAlign());
+        Attrs.addDereferenceableAttr(info.Width.getQuantity());
+        Attrs.addAlignmentAttr(info.Align.getAsAlign());
       }
       break;
     }
diff --git a/clang/lib/CodeGen/CGClass.cpp b/clang/lib/CodeGen/CGClass.cpp
index 4d143e3..c41650a 100644
--- a/clang/lib/CodeGen/CGClass.cpp
+++ b/clang/lib/CodeGen/CGClass.cpp
@@ -798,9 +798,8 @@
   size_t NumFields = 0;
   for (const auto *Field : ClassDecl->fields()) {
     const FieldDecl *D = Field;
-    std::pair<CharUnits, CharUnits> FieldInfo =
-        Context.getTypeInfoInChars(D->getType());
-    CharUnits FieldSize = FieldInfo.first;
+    auto FieldInfo = Context.getTypeInfoInChars(D->getType());
+    CharUnits FieldSize = FieldInfo.Width;
     assert(NumFields < SSV.size());
     SSV[NumFields].Size = D->isBitField() ? 0 : FieldSize.getQuantity();
     NumFields++;
@@ -947,7 +946,7 @@
           LastField->isBitField()
               ? LastField->getBitWidthValue(Ctx)
               : Ctx.toBits(
-                    Ctx.getTypeInfoDataSizeInChars(LastField->getType()).first);
+                    Ctx.getTypeInfoDataSizeInChars(LastField->getType()).Width);
       uint64_t MemcpySizeBits = LastFieldOffset + LastFieldSize -
                                 FirstByteOffset + Ctx.getCharWidth() - 1;
       CharUnits MemcpySize = Ctx.toCharUnitsFromBits(MemcpySizeBits);
diff --git a/clang/lib/CodeGen/CGExprAgg.cpp b/clang/lib/CodeGen/CGExprAgg.cpp
index 2081576..43e23d9 100644
--- a/clang/lib/CodeGen/CGExprAgg.cpp
+++ b/clang/lib/CodeGen/CGExprAgg.cpp
@@ -1976,28 +1976,28 @@
   // Get data size info for this aggregate. Don't copy the tail padding if this
   // might be a potentially-overlapping subobject, since the tail padding might
   // be occupied by a different object. Otherwise, copying it is fine.
-  std::pair<CharUnits, CharUnits> TypeInfo;
+  TypeInfoChars TypeInfo;
   if (MayOverlap)
     TypeInfo = getContext().getTypeInfoDataSizeInChars(Ty);
   else
     TypeInfo = getContext().getTypeInfoInChars(Ty);
 
   llvm::Value *SizeVal = nullptr;
-  if (TypeInfo.first.isZero()) {
+  if (TypeInfo.Width.isZero()) {
     // But note that getTypeInfo returns 0 for a VLA.
     if (auto *VAT = dyn_cast_or_null<VariableArrayType>(
             getContext().getAsArrayType(Ty))) {
       QualType BaseEltTy;
       SizeVal = emitArrayLength(VAT, BaseEltTy, DestPtr);
       TypeInfo = getContext().getTypeInfoInChars(BaseEltTy);
-      assert(!TypeInfo.first.isZero());
+      assert(!TypeInfo.Width.isZero());
       SizeVal = Builder.CreateNUWMul(
           SizeVal,
-          llvm::ConstantInt::get(SizeTy, TypeInfo.first.getQuantity()));
+          llvm::ConstantInt::get(SizeTy, TypeInfo.Width.getQuantity()));
     }
   }
   if (!SizeVal) {
-    SizeVal = llvm::ConstantInt::get(SizeTy, TypeInfo.first.getQuantity());
+    SizeVal = llvm::ConstantInt::get(SizeTy, TypeInfo.Width.getQuantity());
   }
 
   // FIXME: If we have a volatile struct, the optimizer can remove what might
diff --git a/clang/lib/CodeGen/CGObjC.cpp b/clang/lib/CodeGen/CGObjC.cpp
index f905e17e..a647128 100644
--- a/clang/lib/CodeGen/CGObjC.cpp
+++ b/clang/lib/CodeGen/CGObjC.cpp
@@ -919,8 +919,9 @@
   // Evaluate the ivar's size and alignment.
   ObjCIvarDecl *ivar = propImpl->getPropertyIvarDecl();
   QualType ivarType = ivar->getType();
-  std::tie(IvarSize, IvarAlignment) =
-      CGM.getContext().getTypeInfoInChars(ivarType);
+  auto TInfo = CGM.getContext().getTypeInfoInChars(ivarType);
+  IvarSize = TInfo.Width;
+  IvarAlignment = TInfo.Align;
 
   // If we have a copy property, we always have to use getProperty/setProperty.
   // TODO: we could actually use setProperty and an expression for non-atomics.
diff --git a/clang/lib/CodeGen/CGRecordLayoutBuilder.cpp b/clang/lib/CodeGen/CGRecordLayoutBuilder.cpp
index ce35880..880342d 100644
--- a/clang/lib/CodeGen/CGRecordLayoutBuilder.cpp
+++ b/clang/lib/CodeGen/CGRecordLayoutBuilder.cpp
@@ -742,7 +742,7 @@
         assert(Prior->FD->hasAttr<NoUniqueAddressAttr>() &&
                "should not have reused this field's tail padding");
         Prior->Data = getByteArrayType(
-            Context.getTypeInfoDataSizeInChars(Prior->FD->getType()).first);
+            Context.getTypeInfoDataSizeInChars(Prior->FD->getType()).Width);
       }
     }
     if (Member->Data)
diff --git a/clang/lib/CodeGen/CGValue.h b/clang/lib/CodeGen/CGValue.h
index 70e6fed..4b39a05 100644
--- a/clang/lib/CodeGen/CGValue.h
+++ b/clang/lib/CodeGen/CGValue.h
@@ -653,7 +653,7 @@
   /// is the type size unless that might overlap another object, in which
   /// case it's the dsize.
   CharUnits getPreferredSize(ASTContext &Ctx, QualType Type) const {
-    return mayOverlap() ? Ctx.getTypeInfoDataSizeInChars(Type).first
+    return mayOverlap() ? Ctx.getTypeInfoDataSizeInChars(Type).Width
                         : Ctx.getTypeSizeInChars(Type);
   }
 };
diff --git a/clang/lib/CodeGen/TargetInfo.cpp b/clang/lib/CodeGen/TargetInfo.cpp
index d7c2794..31fbe39 100644
--- a/clang/lib/CodeGen/TargetInfo.cpp
+++ b/clang/lib/CodeGen/TargetInfo.cpp
@@ -359,7 +359,7 @@
 ///   leaving one or more empty slots behind as padding.
 static Address emitVoidPtrVAArg(CodeGenFunction &CGF, Address VAListAddr,
                                 QualType ValueTy, bool IsIndirect,
-                                std::pair<CharUnits, CharUnits> ValueInfo,
+                                TypeInfoChars ValueInfo,
                                 CharUnits SlotSizeAndAlign,
                                 bool AllowHigherAlign) {
   // The size and alignment of the value that was passed directly.
@@ -368,8 +368,8 @@
     DirectSize = CGF.getPointerSize();
     DirectAlign = CGF.getPointerAlign();
   } else {
-    DirectSize = ValueInfo.first;
-    DirectAlign = ValueInfo.second;
+    DirectSize = ValueInfo.Width;
+    DirectAlign = ValueInfo.Align;
   }
 
   // Cast the address we've calculated to the right type.
@@ -383,7 +383,7 @@
                                         AllowHigherAlign);
 
   if (IsIndirect) {
-    Addr = Address(CGF.Builder.CreateLoad(Addr), ValueInfo.second);
+    Addr = Address(CGF.Builder.CreateLoad(Addr), ValueInfo.Align);
   }
 
   return Addr;
@@ -656,7 +656,7 @@
         "Unexpected IndirectRealign seen in arginfo in generic VAArg emitter!");
 
     auto TyInfo = CGF.getContext().getTypeInfoInChars(Ty);
-    CharUnits TyAlignForABI = TyInfo.second;
+    CharUnits TyAlignForABI = TyInfo.Align;
 
     llvm::Type *BaseTy =
         llvm::PointerType::getUnqual(CGF.ConvertTypeForMem(Ty));
@@ -2062,8 +2062,8 @@
   //
   // Just messing with TypeInfo like this works because we never pass
   // anything indirectly.
-  TypeInfo.second = CharUnits::fromQuantity(
-                getTypeStackAlignInBytes(Ty, TypeInfo.second.getQuantity()));
+  TypeInfo.Align = CharUnits::fromQuantity(
+                getTypeStackAlignInBytes(Ty, TypeInfo.Align.getQuantity()));
 
   return emitVoidPtrVAArg(CGF, VAListAddr, Ty, /*Indirect*/ false,
                           TypeInfo, CharUnits::fromQuantity(4),
@@ -4067,10 +4067,9 @@
     RegAddr = CGF.Builder.CreateElementBitCast(RegAddr, LTy);
 
     // Copy to a temporary if necessary to ensure the appropriate alignment.
-    std::pair<CharUnits, CharUnits> SizeAlign =
-        getContext().getTypeInfoInChars(Ty);
-    uint64_t TySize = SizeAlign.first.getQuantity();
-    CharUnits TyAlign = SizeAlign.second;
+    auto TInfo = getContext().getTypeInfoInChars(Ty);
+    uint64_t TySize = TInfo.Width.getQuantity();
+    CharUnits TyAlign = TInfo.Align;
 
     // Copy into a temporary if the type is more aligned than the
     // register save area.
@@ -4573,7 +4572,7 @@
     llvm::report_fatal_error("vector type is not supported on AIX yet");
 
   auto TypeInfo = getContext().getTypeInfoInChars(Ty);
-  TypeInfo.second = getParamTypeAlignment(Ty);
+  TypeInfo.Align = getParamTypeAlignment(Ty);
 
   CharUnits SlotSize = CharUnits::fromQuantity(PtrByteSize);
 
@@ -4692,7 +4691,7 @@
                                       QualType Ty) const {
   if (getTarget().getTriple().isOSDarwin()) {
     auto TI = getContext().getTypeInfoInChars(Ty);
-    TI.second = getParamTypeAlignment(Ty);
+    TI.Align = getParamTypeAlignment(Ty);
 
     CharUnits SlotSize = CharUnits::fromQuantity(4);
     return emitVoidPtrVAArg(CGF, VAList, Ty,
@@ -4802,7 +4801,7 @@
     CharUnits Size;
     if (!isIndirect) {
       auto TypeInfo = CGF.getContext().getTypeInfoInChars(Ty);
-      Size = TypeInfo.first.alignTo(OverflowAreaAlign);
+      Size = TypeInfo.Width.alignTo(OverflowAreaAlign);
     } else {
       Size = CGF.getPointerSize();
     }
@@ -5365,7 +5364,7 @@
 Address PPC64_SVR4_ABIInfo::EmitVAArg(CodeGenFunction &CGF, Address VAListAddr,
                                       QualType Ty) const {
   auto TypeInfo = getContext().getTypeInfoInChars(Ty);
-  TypeInfo.second = getParamTypeAlignment(Ty);
+  TypeInfo.Align = getParamTypeAlignment(Ty);
 
   CharUnits SlotSize = CharUnits::fromQuantity(8);
 
@@ -5376,7 +5375,7 @@
   // loads of the real and imaginary parts relative to the va_list pointer,
   // and store them to a temporary structure.
   if (const ComplexType *CTy = Ty->getAs<ComplexType>()) {
-    CharUnits EltSize = TypeInfo.first / 2;
+    CharUnits EltSize = TypeInfo.Width / 2;
     if (EltSize < SlotSize) {
       Address Addr = emitVoidPtrDirectVAArg(CGF, VAListAddr, CGF.Int8Ty,
                                             SlotSize * 2, SlotSize,
@@ -6008,13 +6007,13 @@
     llvm::Type *BaseTy = CGF.ConvertType(QualType(Base, 0));
     llvm::Type *HFATy = llvm::ArrayType::get(BaseTy, NumMembers);
     Address Tmp = CGF.CreateTempAlloca(HFATy,
-                                       std::max(TyAlign, BaseTyInfo.second));
+                                       std::max(TyAlign, BaseTyInfo.Align));
 
     // On big-endian platforms, the value will be right-aligned in its slot.
     int Offset = 0;
     if (CGF.CGM.getDataLayout().isBigEndian() &&
-        BaseTyInfo.first.getQuantity() < 16)
-      Offset = 16 - BaseTyInfo.first.getQuantity();
+        BaseTyInfo.Width.getQuantity() < 16)
+      Offset = 16 - BaseTyInfo.Width.getQuantity();
 
     for (unsigned i = 0; i < NumMembers; ++i) {
       CharUnits BaseOffset = CharUnits::fromQuantity(16 * i + Offset);
@@ -6138,7 +6137,7 @@
   // Arguments bigger than 16 bytes which aren't homogeneous
   // aggregates should be passed indirectly.
   bool IsIndirect = false;
-  if (TyInfo.first.getQuantity() > 16) {
+  if (TyInfo.Width.getQuantity() > 16) {
     const Type *Base = nullptr;
     uint64_t Members = 0;
     IsIndirect = !isHomogeneousAggregate(Ty, Base, Members);
@@ -6900,7 +6899,7 @@
     TyAlignForABI = CharUnits::fromQuantity(4);
   }
 
-  std::pair<CharUnits, CharUnits> TyInfo = { TySize, TyAlignForABI };
+  TypeInfoChars TyInfo(TySize, TyAlignForABI, false);
   return emitVoidPtrVAArg(CGF, VAListAddr, Ty, IsIndirect, TyInfo,
                           SlotSize, /*AllowHigherAlign*/ true);
 }
@@ -7374,8 +7373,8 @@
       ArgTy = AI.getCoerceToType();
     InFPRs = (!IsSoftFloatABI && (ArgTy->isFloatTy() || ArgTy->isDoubleTy()));
     IsVector = ArgTy->isVectorTy();
-    UnpaddedSize = TyInfo.first;
-    DirectAlign = TyInfo.second;
+    UnpaddedSize = TyInfo.Width;
+    DirectAlign = TyInfo.Align;
   }
   CharUnits PaddedSize = CharUnits::fromQuantity(8);
   if (IsVector && UnpaddedSize > PaddedSize)
@@ -7396,7 +7395,7 @@
         CGF.Builder.CreateStructGEP(VAListAddr, 2, "overflow_arg_area_ptr");
     Address OverflowArgArea =
       Address(CGF.Builder.CreateLoad(OverflowArgAreaPtr, "overflow_arg_area"),
-              TyInfo.second);
+              TyInfo.Align);
     Address MemAddr =
       CGF.Builder.CreateElementBitCast(OverflowArgArea, DirectTy, "mem_addr");
 
@@ -7493,7 +7492,7 @@
 
   if (IsIndirect)
     ResAddr = Address(CGF.Builder.CreateLoad(ResAddr, "indirect_arg"),
-                      TyInfo.second);
+                      TyInfo.Align);
 
   return ResAddr;
 }
@@ -7990,8 +7989,8 @@
 
   // The alignment of things in the argument area is never larger than
   // StackAlignInBytes.
-  TyInfo.second =
-    std::min(TyInfo.second, CharUnits::fromQuantity(StackAlignInBytes));
+  TyInfo.Align =
+    std::min(TyInfo.Align, CharUnits::fromQuantity(StackAlignInBytes));
 
   // MinABIStackAlignInBytes is the size of argument slots on the stack.
   CharUnits ArgSlotSize = CharUnits::fromQuantity(MinABIStackAlignInBytes);
@@ -9454,7 +9453,7 @@
 
   case ABIArgInfo::Extend: {
     Stride = SlotSize;
-    CharUnits Offset = SlotSize - TypeInfo.first;
+    CharUnits Offset = SlotSize - TypeInfo.Width;
     ArgAddr = Builder.CreateConstInBoundsByteGEP(Addr, Offset, "extend");
     break;
   }
@@ -9471,11 +9470,11 @@
     Stride = SlotSize;
     ArgAddr = Builder.CreateElementBitCast(Addr, ArgPtrTy, "indirect");
     ArgAddr = Address(Builder.CreateLoad(ArgAddr, "indirect.arg"),
-                      TypeInfo.second);
+                      TypeInfo.Align);
     break;
 
   case ABIArgInfo::Ignore:
-    return Address(llvm::UndefValue::get(ArgPtrTy), TypeInfo.second);
+    return Address(llvm::UndefValue::get(ArgPtrTy), TypeInfo.Align);
   }
 
   // Update VAList.
@@ -10771,13 +10770,12 @@
     return Addr;
   }
 
-  std::pair<CharUnits, CharUnits> SizeAndAlign =
-      getContext().getTypeInfoInChars(Ty);
+  auto TInfo = getContext().getTypeInfoInChars(Ty);
 
   // Arguments bigger than 2*Xlen bytes are passed indirectly.
-  bool IsIndirect = SizeAndAlign.first > 2 * SlotSize;
+  bool IsIndirect = TInfo.Width > 2 * SlotSize;
 
-  return emitVoidPtrVAArg(CGF, VAListAddr, Ty, IsIndirect, SizeAndAlign,
+  return emitVoidPtrVAArg(CGF, VAListAddr, Ty, IsIndirect, TInfo,
                           SlotSize, /*AllowHigherAlign=*/true);
 }