diff --git a/include/llvm/ADT/CoalescingBitVector.h b/include/llvm/ADT/CoalescingBitVector.h
index 8ef6f4fac0a..647857435b1 100644
--- a/include/llvm/ADT/CoalescingBitVector.h
+++ b/include/llvm/ADT/CoalescingBitVector.h
@@ -384,10 +384,10 @@ private:
     for (IntervalMapOverlaps<MapT, MapT> I(Intervals, Other.Intervals);
          I.valid(); ++I)
       Overlaps.emplace_back(I.start(), I.stop());
-    assert(std::is_sorted(Overlaps.begin(), Overlaps.end(),
-                          [](IntervalT LHS, IntervalT RHS) {
-                            return LHS.second < RHS.first;
-                          }) &&
+    assert(llvm::is_sorted(Overlaps,
+                           [](IntervalT LHS, IntervalT RHS) {
+                             return LHS.second < RHS.first;
+                           }) &&
            "Overlaps must be sorted");
     return !Overlaps.empty();
   }
diff --git a/include/llvm/ADT/STLExtras.h b/include/llvm/ADT/STLExtras.h
index a6619adc44b..529219ef239 100644
--- a/include/llvm/ADT/STLExtras.h
+++ b/include/llvm/ADT/STLExtras.h
@@ -1257,6 +1257,18 @@ bool is_contained(R &&Range, const E &Element) {
   return std::find(adl_begin(Range), adl_end(Range), Element) != adl_end(Range);
 }
 
+/// Wrapper function around std::is_sorted to check if elements in a range \p R
+/// are sorted with respect to a comparator \p C.
+template <typename R, typename Compare> bool is_sorted(R &&Range, Compare C) {
+  return std::is_sorted(adl_begin(Range), adl_end(Range), C);
+}
+
+/// Wrapper function around std::is_sorted to check if elements in a range \p R
+/// are sorted in non-descending order.
+template <typename R> bool is_sorted(R &&Range) {
+  return std::is_sorted(adl_begin(Range), adl_end(Range));
+}
+
 /// Wrapper function around std::count to count the number of times an element
 /// \p Element occurs in the given range \p Range.
 template <typename R, typename E> auto count(R &&Range, const E &Element) {
diff --git a/include/llvm/CodeGen/LiveInterval.h b/include/llvm/CodeGen/LiveInterval.h
index dfb104a7df7..0764257125e 100644
--- a/include/llvm/CodeGen/LiveInterval.h
+++ b/include/llvm/CodeGen/LiveInterval.h
@@ -617,7 +617,7 @@ namespace llvm {
     /// subranges). Returns true if found at least one index.
     template <typename Range, typename OutputIt>
     bool findIndexesLiveAt(Range &&R, OutputIt O) const {
-      assert(std::is_sorted(R.begin(), R.end()));
+      assert(llvm::is_sorted(R));
       auto Idx = R.begin(), EndIdx = R.end();
       auto Seg = segments.begin(), EndSeg = segments.end();
       bool Found = false;
diff --git a/lib/Analysis/CFLAndersAliasAnalysis.cpp b/lib/Analysis/CFLAndersAliasAnalysis.cpp
index eb5c96e6eec..179f0633df0 100644
--- a/lib/Analysis/CFLAndersAliasAnalysis.cpp
+++ b/lib/Analysis/CFLAndersAliasAnalysis.cpp
@@ -552,7 +552,7 @@ bool CFLAndersAAResult::FunctionInfo::mayAlias(
       return std::less<const Value *>()(LHS.Val, RHS.Val);
     };
 #ifdef EXPENSIVE_CHECKS
-    assert(std::is_sorted(Itr->second.begin(), Itr->second.end(), Comparator));
+    assert(llvm::is_sorted(Itr->second, Comparator));
 #endif
     auto RangePair = std::equal_range(Itr->second.begin(), Itr->second.end(),
                                       OffsetValue{RHS, 0}, Comparator);
diff --git a/lib/Analysis/LoopCacheAnalysis.cpp b/lib/Analysis/LoopCacheAnalysis.cpp
index c08a84edb2c..6271bbfd717 100644
--- a/lib/Analysis/LoopCacheAnalysis.cpp
+++ b/lib/Analysis/LoopCacheAnalysis.cpp
@@ -64,10 +64,10 @@ static Loop *getInnerMostLoop(const LoopVectorTy &Loops) {
     return LastLoop;
   }
 
-  return (std::is_sorted(Loops.begin(), Loops.end(),
-                         [](const Loop *L1, const Loop *L2) {
-                           return L1->getLoopDepth() < L2->getLoopDepth();
-                         }))
+  return (llvm::is_sorted(Loops,
+                          [](const Loop *L1, const Loop *L2) {
+                            return L1->getLoopDepth() < L2->getLoopDepth();
+                          }))
              ? LastLoop
              : nullptr;
 }
diff --git a/lib/Analysis/TargetLibraryInfo.cpp b/lib/Analysis/TargetLibraryInfo.cpp
index ffa6921c51b..cae71d130d7 100644
--- a/lib/Analysis/TargetLibraryInfo.cpp
+++ b/lib/Analysis/TargetLibraryInfo.cpp
@@ -69,11 +69,10 @@ static bool hasBcmp(const Triple &TT) {
 static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
                        ArrayRef<StringLiteral> StandardNames) {
   // Verify that the StandardNames array is in alphabetical order.
-  assert(std::is_sorted(StandardNames.begin(), StandardNames.end(),
-                        [](StringRef LHS, StringRef RHS) {
-                          return LHS < RHS;
-                        }) &&
-         "TargetLibraryInfoImpl function names must be sorted");
+  assert(
+      llvm::is_sorted(StandardNames,
+                      [](StringRef LHS, StringRef RHS) { return LHS < RHS; }) &&
+      "TargetLibraryInfoImpl function names must be sorted");
 
   // Set IO unlocked variants as unavailable
   // Set them as available per system below
diff --git a/lib/Bitcode/Writer/ValueEnumerator.cpp b/lib/Bitcode/Writer/ValueEnumerator.cpp
index 7419c4687fa..8bdddc27e95 100644
--- a/lib/Bitcode/Writer/ValueEnumerator.cpp
+++ b/lib/Bitcode/Writer/ValueEnumerator.cpp
@@ -231,9 +231,9 @@ static void predictValueUseListOrderImpl(const Value *V, const Function *F,
     return LU->getOperandNo() > RU->getOperandNo();
   });
 
-  if (std::is_sorted(
-          List.begin(), List.end(),
-          [](const Entry &L, const Entry &R) { return L.second < R.second; }))
+  if (llvm::is_sorted(List, [](const Entry &L, const Entry &R) {
+        return L.second < R.second;
+      }))
     // Order is already correct.
     return;
 
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index e75bf95dd19..0624dfe8cf5 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -2424,8 +2424,7 @@ void DebugLocEntry::finalize(const AsmPrinter &AP,
     assert(llvm::all_of(Values, [](DbgValueLoc P) {
           return P.isFragment();
         }) && "all values are expected to be fragments");
-    assert(std::is_sorted(Values.begin(), Values.end()) &&
-           "fragments are expected to be sorted");
+    assert(llvm::is_sorted(Values) && "fragments are expected to be sorted");
 
     for (auto Fragment : Values)
       DwarfDebug::emitDebugLocValue(AP, BT, Fragment, DwarfExpr);
diff --git a/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp b/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
index 834a7ada789..4fa90697552 100644
--- a/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
+++ b/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
@@ -513,7 +513,7 @@ void MachineIRBuilder::buildSequence(Register Res, ArrayRef<Register> Ops,
 #ifndef NDEBUG
   assert(Ops.size() == Indices.size() && "incompatible args");
   assert(!Ops.empty() && "invalid trivial sequence");
-  assert(std::is_sorted(Indices.begin(), Indices.end()) &&
+  assert(llvm::is_sorted(Indices) &&
          "sequence offsets must be in ascending order");
 
   assert(getMRI()->getType(Res).isValid() && "invalid operand type");
diff --git a/lib/Frontend/OpenMP/OMPContext.cpp b/lib/Frontend/OpenMP/OMPContext.cpp
index ccb148c5033..c44e858ab5e 100644
--- a/lib/Frontend/OpenMP/OMPContext.cpp
+++ b/lib/Frontend/OpenMP/OMPContext.cpp
@@ -91,8 +91,8 @@ OMPContext::OMPContext(bool IsDeviceCompilation, Triple TargetTriple) {
 /// expected to be sorted.
 template <typename T> static bool isSubset(ArrayRef<T> C0, ArrayRef<T> C1) {
 #ifdef EXPENSIVE_CHECKS
-  assert(std::is_sorted(C0.begin(), C0.end()) &&
-         std::is_sorted(C1.begin(), C1.end()) && "Expected sorted arrays!");
+  assert(llvm::is_sorted(C0) && llvm::is_sorted(C1) &&
+         "Expected sorted arrays!");
 #endif
   if (C0.size() > C1.size())
     return false;
diff --git a/lib/IR/AsmWriter.cpp b/lib/IR/AsmWriter.cpp
index 1b74533f803..ca01fe44628 100644
--- a/lib/IR/AsmWriter.cpp
+++ b/lib/IR/AsmWriter.cpp
@@ -228,9 +228,9 @@ static void predictValueUseListOrderImpl(const Value *V, const Function *F,
     return LU->getOperandNo() > RU->getOperandNo();
   });
 
-  if (std::is_sorted(
-          List.begin(), List.end(),
-          [](const Entry &L, const Entry &R) { return L.second < R.second; }))
+  if (llvm::is_sorted(List, [](const Entry &L, const Entry &R) {
+        return L.second < R.second;
+      }))
     // Order is already correct.
     return;
 
diff --git a/lib/IR/Attributes.cpp b/lib/IR/Attributes.cpp
index e237f6cd316..f7e42510dc4 100644
--- a/lib/IR/Attributes.cpp
+++ b/lib/IR/Attributes.cpp
@@ -1019,11 +1019,12 @@ AttributeList::get(LLVMContext &C,
   if (Attrs.empty())
     return {};
 
-  assert(std::is_sorted(Attrs.begin(), Attrs.end(),
-                        [](const std::pair<unsigned, Attribute> &LHS,
-                           const std::pair<unsigned, Attribute> &RHS) {
-                          return LHS.first < RHS.first;
-                        }) && "Misordered Attributes list!");
+  assert(llvm::is_sorted(Attrs,
+                         [](const std::pair<unsigned, Attribute> &LHS,
+                            const std::pair<unsigned, Attribute> &RHS) {
+                           return LHS.first < RHS.first;
+                         }) &&
+         "Misordered Attributes list!");
   assert(llvm::none_of(Attrs,
                        [](const std::pair<unsigned, Attribute> &Pair) {
                          return Pair.second.hasAttribute(Attribute::None);
@@ -1055,11 +1056,11 @@ AttributeList::get(LLVMContext &C,
   if (Attrs.empty())
     return {};
 
-  assert(std::is_sorted(Attrs.begin(), Attrs.end(),
-                        [](const std::pair<unsigned, AttributeSet> &LHS,
-                           const std::pair<unsigned, AttributeSet> &RHS) {
-                          return LHS.first < RHS.first;
-                        }) &&
+  assert(llvm::is_sorted(Attrs,
+                         [](const std::pair<unsigned, AttributeSet> &LHS,
+                            const std::pair<unsigned, AttributeSet> &RHS) {
+                           return LHS.first < RHS.first;
+                         }) &&
          "Misordered Attributes list!");
   assert(llvm::none_of(Attrs,
                        [](const std::pair<unsigned, AttributeSet> &Pair) {
@@ -1228,7 +1229,7 @@ AttributeList AttributeList::addAttributes(LLVMContext &C, unsigned Index,
 AttributeList AttributeList::addParamAttribute(LLVMContext &C,
                                                ArrayRef<unsigned> ArgNos,
                                                Attribute A) const {
-  assert(std::is_sorted(ArgNos.begin(), ArgNos.end()));
+  assert(llvm::is_sorted(ArgNos));
 
   SmallVector<AttributeSet, 4> AttrSets(this->begin(), this->end());
   unsigned MaxIndex = attrIdxToArrayIdx(ArgNos.back() + FirstArgIndex);
diff --git a/lib/MC/MCSubtargetInfo.cpp b/lib/MC/MCSubtargetInfo.cpp
index efe1e95b736..1c187d616e4 100644
--- a/lib/MC/MCSubtargetInfo.cpp
+++ b/lib/MC/MCSubtargetInfo.cpp
@@ -155,10 +155,8 @@ static FeatureBitset getFeatures(StringRef CPU, StringRef FS,
   if (ProcDesc.empty() || ProcFeatures.empty())
     return FeatureBitset();
 
-  assert(std::is_sorted(std::begin(ProcDesc), std::end(ProcDesc)) &&
-         "CPU table is not sorted");
-  assert(std::is_sorted(std::begin(ProcFeatures), std::end(ProcFeatures)) &&
-         "CPU features table is not sorted");
+  assert(llvm::is_sorted(ProcDesc) && "CPU table is not sorted");
+  assert(llvm::is_sorted(ProcFeatures) && "CPU features table is not sorted");
   // Resulting bits
   FeatureBitset Bits;
 
@@ -290,7 +288,7 @@ bool MCSubtargetInfo::checkFeatures(StringRef FS) const {
 }
 
 const MCSchedModel &MCSubtargetInfo::getSchedModelForCPU(StringRef CPU) const {
-  assert(std::is_sorted(ProcDesc.begin(), ProcDesc.end()) &&
+  assert(llvm::is_sorted(ProcDesc) &&
          "Processor machine model table is not sorted");
 
   // Find entry
diff --git a/lib/Target/ARM/ARMExpandPseudoInsts.cpp b/lib/Target/ARM/ARMExpandPseudoInsts.cpp
index 9e461c35abd..a122dacb297 100644
--- a/lib/Target/ARM/ARMExpandPseudoInsts.cpp
+++ b/lib/Target/ARM/ARMExpandPseudoInsts.cpp
@@ -417,8 +417,7 @@ static const NEONLdStTableEntry *LookupNEONLdSt(unsigned Opcode) {
   // Make sure the table is sorted.
   static std::atomic<bool> TableChecked(false);
   if (!TableChecked.load(std::memory_order_relaxed)) {
-    assert(std::is_sorted(std::begin(NEONLdStTable), std::end(NEONLdStTable)) &&
-           "NEONLdStTable is not sorted!");
+    assert(llvm::is_sorted(NEONLdStTable) && "NEONLdStTable is not sorted!");
     TableChecked.store(true, std::memory_order_relaxed);
   }
 #endif
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index 9304d833919..c3639b38b5b 100644
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -3619,8 +3619,7 @@ public:
     if (Kind == k_RegisterList && Regs.back().second == ARM::APSR)
       Kind = k_RegisterListWithAPSR;
 
-    assert(std::is_sorted(Regs.begin(), Regs.end()) &&
-           "Register list must be sorted by encoding");
+    assert(llvm::is_sorted(Regs) && "Register list must be sorted by encoding");
 
     auto Op = std::make_unique<ARMOperand>(Kind);
     for (const auto &P : Regs)
diff --git a/lib/Target/Mips/MipsCCState.cpp b/lib/Target/Mips/MipsCCState.cpp
index ef48c850a1b..fe3fe82797c 100644
--- a/lib/Target/Mips/MipsCCState.cpp
+++ b/lib/Target/Mips/MipsCCState.cpp
@@ -30,9 +30,9 @@ static bool isF128SoftLibCall(const char *CallSym) {
 
   // Check that LibCalls is sorted alphabetically.
   auto Comp = [](const char *S1, const char *S2) { return strcmp(S1, S2) < 0; };
-  assert(std::is_sorted(std::begin(LibCalls), std::end(LibCalls), Comp));
-  return std::binary_search(std::begin(LibCalls), std::end(LibCalls),
-                            CallSym, Comp);
+  assert(llvm::is_sorted(LibCalls, Comp));
+  return std::binary_search(std::begin(LibCalls), std::end(LibCalls), CallSym,
+                            Comp);
 }
 
 /// This function returns true if Ty is fp128, {f128} or i128 which was
diff --git a/lib/Target/X86/X86EvexToVex.cpp b/lib/Target/X86/X86EvexToVex.cpp
index f1cf9b94c9e..540ad98b6d5 100644
--- a/lib/Target/X86/X86EvexToVex.cpp
+++ b/lib/Target/X86/X86EvexToVex.cpp
@@ -237,11 +237,9 @@ bool EvexToVexInstPass::CompressEvexToVexImpl(MachineInstr &MI) const {
   // Make sure the tables are sorted.
   static std::atomic<bool> TableChecked(false);
   if (!TableChecked.load(std::memory_order_relaxed)) {
-    assert(std::is_sorted(std::begin(X86EvexToVex128CompressTable),
-                          std::end(X86EvexToVex128CompressTable)) &&
+    assert(llvm::is_sorted(X86EvexToVex128CompressTable) &&
            "X86EvexToVex128CompressTable is not sorted!");
-    assert(std::is_sorted(std::begin(X86EvexToVex256CompressTable),
-                          std::end(X86EvexToVex256CompressTable)) &&
+    assert(llvm::is_sorted(X86EvexToVex256CompressTable) &&
            "X86EvexToVex256CompressTable is not sorted!");
     TableChecked.store(true, std::memory_order_relaxed);
   }
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 41032015857..47ef38ab3f4 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -3383,10 +3383,10 @@ static ArrayRef<MCPhysReg> get64BitArgumentXMMs(MachineFunction &MF,
 
 #ifndef NDEBUG
 static bool isSortedByValueNo(ArrayRef<CCValAssign> ArgLocs) {
-  return std::is_sorted(ArgLocs.begin(), ArgLocs.end(),
-                        [](const CCValAssign &A, const CCValAssign &B) -> bool {
-                          return A.getValNo() < B.getValNo();
-                        });
+  return llvm::is_sorted(
+      ArgLocs, [](const CCValAssign &A, const CCValAssign &B) -> bool {
+        return A.getValNo() < B.getValNo();
+      });
 }
 #endif
 
diff --git a/lib/Target/X86/X86InstrFMA3Info.cpp b/lib/Target/X86/X86InstrFMA3Info.cpp
index 25bbdddb7a2..6d803e931b6 100644
--- a/lib/Target/X86/X86InstrFMA3Info.cpp
+++ b/lib/Target/X86/X86InstrFMA3Info.cpp
@@ -116,11 +116,8 @@ static void verifyTables() {
 #ifndef NDEBUG
   static std::atomic<bool> TableChecked(false);
   if (!TableChecked.load(std::memory_order_relaxed)) {
-    assert(std::is_sorted(std::begin(Groups), std::end(Groups)) &&
-           std::is_sorted(std::begin(RoundGroups), std::end(RoundGroups)) &&
-           std::is_sorted(std::begin(BroadcastGroups),
-                          std::end(BroadcastGroups)) &&
-           "FMA3 tables not sorted!");
+    assert(llvm::is_sorted(Groups) && llvm::is_sorted(RoundGroups) &&
+           llvm::is_sorted(BroadcastGroups) && "FMA3 tables not sorted!");
     TableChecked.store(true, std::memory_order_relaxed);
   }
 #endif
diff --git a/lib/Target/X86/X86InstrFoldTables.cpp b/lib/Target/X86/X86InstrFoldTables.cpp
index 15745c10b78..11fbb37b118 100644
--- a/lib/Target/X86/X86InstrFoldTables.cpp
+++ b/lib/Target/X86/X86InstrFoldTables.cpp
@@ -5529,53 +5529,45 @@ lookupFoldTableImpl(ArrayRef<X86MemoryFoldTableEntry> Table, unsigned RegOp) {
   // Make sure the tables are sorted.
   static std::atomic<bool> FoldTablesChecked(false);
   if (!FoldTablesChecked.load(std::memory_order_relaxed)) {
-    assert(std::is_sorted(std::begin(MemoryFoldTable2Addr),
-                          std::end(MemoryFoldTable2Addr)) &&
+    assert(llvm::is_sorted(MemoryFoldTable2Addr) &&
            std::adjacent_find(std::begin(MemoryFoldTable2Addr),
                               std::end(MemoryFoldTable2Addr)) ==
-           std::end(MemoryFoldTable2Addr) &&
+               std::end(MemoryFoldTable2Addr) &&
            "MemoryFoldTable2Addr is not sorted and unique!");
-    assert(std::is_sorted(std::begin(MemoryFoldTable0),
-                          std::end(MemoryFoldTable0)) &&
+    assert(llvm::is_sorted(MemoryFoldTable0) &&
            std::adjacent_find(std::begin(MemoryFoldTable0),
                               std::end(MemoryFoldTable0)) ==
-           std::end(MemoryFoldTable0) &&
+               std::end(MemoryFoldTable0) &&
            "MemoryFoldTable0 is not sorted and unique!");
-    assert(std::is_sorted(std::begin(MemoryFoldTable1),
-                          std::end(MemoryFoldTable1)) &&
+    assert(llvm::is_sorted(MemoryFoldTable1) &&
            std::adjacent_find(std::begin(MemoryFoldTable1),
                               std::end(MemoryFoldTable1)) ==
-           std::end(MemoryFoldTable1) &&
+               std::end(MemoryFoldTable1) &&
            "MemoryFoldTable1 is not sorted and unique!");
-    assert(std::is_sorted(std::begin(MemoryFoldTable2),
-                          std::end(MemoryFoldTable2)) &&
+    assert(llvm::is_sorted(MemoryFoldTable2) &&
            std::adjacent_find(std::begin(MemoryFoldTable2),
                               std::end(MemoryFoldTable2)) ==
-           std::end(MemoryFoldTable2) &&
+               std::end(MemoryFoldTable2) &&
            "MemoryFoldTable2 is not sorted and unique!");
-    assert(std::is_sorted(std::begin(MemoryFoldTable3),
-                          std::end(MemoryFoldTable3)) &&
+    assert(llvm::is_sorted(MemoryFoldTable3) &&
            std::adjacent_find(std::begin(MemoryFoldTable3),
                               std::end(MemoryFoldTable3)) ==
-           std::end(MemoryFoldTable3) &&
+               std::end(MemoryFoldTable3) &&
            "MemoryFoldTable3 is not sorted and unique!");
-    assert(std::is_sorted(std::begin(MemoryFoldTable4),
-                          std::end(MemoryFoldTable4)) &&
+    assert(llvm::is_sorted(MemoryFoldTable4) &&
            std::adjacent_find(std::begin(MemoryFoldTable4),
                               std::end(MemoryFoldTable4)) ==
-           std::end(MemoryFoldTable4) &&
+               std::end(MemoryFoldTable4) &&
            "MemoryFoldTable4 is not sorted and unique!");
-    assert(std::is_sorted(std::begin(BroadcastFoldTable2),
-                          std::end(BroadcastFoldTable2)) &&
+    assert(llvm::is_sorted(BroadcastFoldTable2) &&
            std::adjacent_find(std::begin(BroadcastFoldTable2),
                               std::end(BroadcastFoldTable2)) ==
-           std::end(BroadcastFoldTable2) &&
+               std::end(BroadcastFoldTable2) &&
            "BroadcastFoldTable2 is not sorted and unique!");
-    assert(std::is_sorted(std::begin(BroadcastFoldTable3),
-                          std::end(BroadcastFoldTable3)) &&
+    assert(llvm::is_sorted(BroadcastFoldTable3) &&
            std::adjacent_find(std::begin(BroadcastFoldTable3),
                               std::end(BroadcastFoldTable3)) ==
-           std::end(BroadcastFoldTable3) &&
+               std::end(BroadcastFoldTable3) &&
            "BroadcastFoldTable3 is not sorted and unique!");
     FoldTablesChecked.store(true, std::memory_order_relaxed);
   }
diff --git a/lib/Target/X86/X86IntrinsicsInfo.h b/lib/Target/X86/X86IntrinsicsInfo.h
index 6dc4860f1bf..a3b427996a4 100644
--- a/lib/Target/X86/X86IntrinsicsInfo.h
+++ b/lib/Target/X86/X86IntrinsicsInfo.h
@@ -1155,10 +1155,8 @@ static const IntrinsicData* getIntrinsicWithoutChain(unsigned IntNo) {
 }
 
 static void verifyIntrinsicTables() {
-  assert(std::is_sorted(std::begin(IntrinsicsWithoutChain),
-                        std::end(IntrinsicsWithoutChain)) &&
-         std::is_sorted(std::begin(IntrinsicsWithChain),
-                        std::end(IntrinsicsWithChain)) &&
+  assert(llvm::is_sorted(IntrinsicsWithoutChain) &&
+         llvm::is_sorted(IntrinsicsWithChain) &&
          "Intrinsic data tables should be sorted by Intrinsic ID");
   assert((std::adjacent_find(std::begin(IntrinsicsWithoutChain),
                              std::end(IntrinsicsWithoutChain)) ==
diff --git a/lib/Transforms/IPO/CalledValuePropagation.cpp b/lib/Transforms/IPO/CalledValuePropagation.cpp
index f28a399b177..8358ccecc3f 100644
--- a/lib/Transforms/IPO/CalledValuePropagation.cpp
+++ b/lib/Transforms/IPO/CalledValuePropagation.cpp
@@ -72,8 +72,7 @@ public:
   CVPLatticeVal(CVPLatticeStateTy LatticeState) : LatticeState(LatticeState) {}
   CVPLatticeVal(std::vector<Function *> &&Functions)
       : LatticeState(FunctionSet), Functions(std::move(Functions)) {
-    assert(std::is_sorted(this->Functions.begin(), this->Functions.end(),
-                          Compare()));
+    assert(llvm::is_sorted(this->Functions, Compare()));
   }
 
   /// Get a reference to the functions held by this lattice value. The number
diff --git a/tools/llvm-exegesis/lib/Target.cpp b/tools/llvm-exegesis/lib/Target.cpp
index 7fb22314f05..4e0de937566 100644
--- a/tools/llvm-exegesis/lib/Target.cpp
+++ b/tools/llvm-exegesis/lib/Target.cpp
@@ -107,8 +107,8 @@ const PfmCountersInfo PfmCountersInfo::Default = {nullptr, nullptr, nullptr,
                                                   0u};
 
 const PfmCountersInfo &ExegesisTarget::getPfmCounters(StringRef CpuName) const {
-  assert(std::is_sorted(
-             CpuPfmCounters.begin(), CpuPfmCounters.end(),
+  assert(llvm::is_sorted(
+             CpuPfmCounters,
              [](const CpuAndPfmCounters &LHS, const CpuAndPfmCounters &RHS) {
                return strcmp(LHS.CpuName, RHS.CpuName) < 0;
              }) &&
diff --git a/tools/llvm-objcopy/ELF/Object.cpp b/tools/llvm-objcopy/ELF/Object.cpp
index 14ac7bba24f..bc590fad4be 100644
--- a/tools/llvm-objcopy/ELF/Object.cpp
+++ b/tools/llvm-objcopy/ELF/Object.cpp
@@ -1902,8 +1902,7 @@ static void orderSegments(std::vector<Segment *> &Segments) {
 // returns an Offset one past the end of the last segment.
 static uint64_t layoutSegments(std::vector<Segment *> &Segments,
                                uint64_t Offset) {
-  assert(std::is_sorted(std::begin(Segments), std::end(Segments),
-                        compareSegmentsByOffset));
+  assert(llvm::is_sorted(Segments, compareSegmentsByOffset));
   // The only way a segment should move is if a section was between two
   // segments and that section was removed. If that section isn't in a segment
   // then it's acceptable, but not ideal, to simply move it to after the
diff --git a/tools/llvm-objcopy/MachO/MachOLayoutBuilder.cpp b/tools/llvm-objcopy/MachO/MachOLayoutBuilder.cpp
index fc45bf9de80..9ac02eb213b 100644
--- a/tools/llvm-objcopy/MachO/MachOLayoutBuilder.cpp
+++ b/tools/llvm-objcopy/MachO/MachOLayoutBuilder.cpp
@@ -61,15 +61,16 @@ void MachOLayoutBuilder::updateDySymTab(MachO::macho_load_command &MLC) {
   assert(MLC.load_command_data.cmd == MachO::LC_DYSYMTAB);
   // Make sure that nlist entries in the symbol table are sorted by the those
   // types. The order is: local < defined external < undefined external.
-  assert(std::is_sorted(O.SymTable.Symbols.begin(), O.SymTable.Symbols.end(),
-                        [](const std::unique_ptr<SymbolEntry> &A,
-                           const std::unique_ptr<SymbolEntry> &B) {
-                          bool AL = A->isLocalSymbol(), BL = B->isLocalSymbol();
-                          if (AL != BL)
-                            return AL;
-                          return !AL && !A->isUndefinedSymbol() &&
-                                         B->isUndefinedSymbol();
-                        }) &&
+  assert(llvm::is_sorted(O.SymTable.Symbols,
+                         [](const std::unique_ptr<SymbolEntry> &A,
+                            const std::unique_ptr<SymbolEntry> &B) {
+                           bool AL = A->isLocalSymbol(),
+                                BL = B->isLocalSymbol();
+                           if (AL != BL)
+                             return AL;
+                           return !AL && !A->isUndefinedSymbol() &&
+                                  B->isUndefinedSymbol();
+                         }) &&
          "Symbols are not sorted by their types.");
 
   uint32_t NumLocalSymbols = 0;
diff --git a/unittests/ADT/SimpleIListTest.cpp b/unittests/ADT/SimpleIListTest.cpp
index 9b8ffac5635..238896eaefb 100644
--- a/unittests/ADT/SimpleIListTest.cpp
+++ b/unittests/ADT/SimpleIListTest.cpp
@@ -436,8 +436,8 @@ TEST(SimpleIListTest, merge) {
     // Check setup.
     EXPECT_EQ(4u, L1.size());
     EXPECT_EQ(6u, L2.size());
-    EXPECT_TRUE(std::is_sorted(L1.begin(), L1.end()));
-    EXPECT_TRUE(std::is_sorted(L2.begin(), L2.end()));
+    EXPECT_TRUE(llvm::is_sorted(L1));
+    EXPECT_TRUE(llvm::is_sorted(L2));
 
     // Merge.
     auto &LHS = IsL1LHS ? L1 : L2;
@@ -445,7 +445,7 @@ TEST(SimpleIListTest, merge) {
     LHS.merge(RHS);
     EXPECT_TRUE(RHS.empty());
     EXPECT_FALSE(LHS.empty());
-    EXPECT_TRUE(std::is_sorted(LHS.begin(), LHS.end()));
+    EXPECT_TRUE(llvm::is_sorted(LHS));
     auto I = LHS.begin();
     for (Node &N : Ns)
       EXPECT_EQ(&N, &*I++);
@@ -473,8 +473,8 @@ TEST(SimpleIListTest, mergeIsStable) {
     // Check setup.
     EXPECT_EQ(3u, L1.size());
     EXPECT_EQ(2u, L2.size());
-    EXPECT_TRUE(std::is_sorted(L1.begin(), L1.end(), makeFalse));
-    EXPECT_TRUE(std::is_sorted(L2.begin(), L2.end(), makeFalse));
+    EXPECT_TRUE(llvm::is_sorted(L1, makeFalse));
+    EXPECT_TRUE(llvm::is_sorted(L2, makeFalse));
   };
 
   // Merge.  Should be stable.
@@ -482,7 +482,7 @@ TEST(SimpleIListTest, mergeIsStable) {
   L1.merge(L2, makeFalse);
   EXPECT_TRUE(L2.empty());
   EXPECT_FALSE(L1.empty());
-  EXPECT_TRUE(std::is_sorted(L1.begin(), L1.end(), makeFalse));
+  EXPECT_TRUE(llvm::is_sorted(L1, makeFalse));
   auto I = L1.begin();
   EXPECT_EQ(&Ns[0], &*I++);
   EXPECT_EQ(&Ns[3], &*I++);
@@ -497,7 +497,7 @@ TEST(SimpleIListTest, mergeIsStable) {
   L2.merge(L1, makeFalse);
   EXPECT_TRUE(L1.empty());
   EXPECT_FALSE(L2.empty());
-  EXPECT_TRUE(std::is_sorted(L2.begin(), L2.end(), makeFalse));
+  EXPECT_TRUE(llvm::is_sorted(L2, makeFalse));
   I = L2.begin();
   EXPECT_EQ(&Ns[1], &*I++);
   EXPECT_EQ(&Ns[2], &*I++);
@@ -521,7 +521,7 @@ TEST(SimpleIListTest, mergeEmpty) {
     // Check setup.
     EXPECT_EQ(4u, L1.size());
     EXPECT_TRUE(L2.empty());
-    EXPECT_TRUE(std::is_sorted(L1.begin(), L1.end()));
+    EXPECT_TRUE(llvm::is_sorted(L1));
 
     // Merge.
     auto &LHS = IsL1LHS ? L1 : L2;
@@ -529,7 +529,7 @@ TEST(SimpleIListTest, mergeEmpty) {
     LHS.merge(RHS);
     EXPECT_TRUE(RHS.empty());
     EXPECT_FALSE(LHS.empty());
-    EXPECT_TRUE(std::is_sorted(LHS.begin(), LHS.end()));
+    EXPECT_TRUE(llvm::is_sorted(LHS));
     auto I = LHS.begin();
     for (Node &N : Ns)
       EXPECT_EQ(&N, &*I++);
@@ -554,11 +554,11 @@ TEST(SimpleIListTest, sort) {
 
   // Check setup.
   EXPECT_EQ(10u, L.size());
-  EXPECT_FALSE(std::is_sorted(L.begin(), L.end()));
+  EXPECT_FALSE(llvm::is_sorted(L));
 
   // Sort.
   L.sort();
-  EXPECT_TRUE(std::is_sorted(L.begin(), L.end()));
+  EXPECT_TRUE(llvm::is_sorted(L));
   auto I = L.begin();
   for (Node &N : Ns)
     EXPECT_EQ(&N, &*I++);
@@ -581,11 +581,11 @@ TEST(SimpleIListTest, sortIsStable) {
 
   // Check setup.
   EXPECT_EQ(10u, L.size());
-  EXPECT_FALSE(std::is_sorted(L.begin(), L.end(), compare));
+  EXPECT_FALSE(llvm::is_sorted(L, compare));
 
   // Sort.
   L.sort(compare);
-  EXPECT_TRUE(std::is_sorted(L.begin(), L.end(), compare));
+  EXPECT_TRUE(llvm::is_sorted(L, compare));
   auto I = L.begin();
   for (int O : {3, 4, 1, 2, 0})
     EXPECT_EQ(&Ns[O], &*I++);
diff --git a/unittests/Support/ParallelTest.cpp b/unittests/Support/ParallelTest.cpp
index 63c71522308..4bae89d04e0 100644
--- a/unittests/Support/ParallelTest.cpp
+++ b/unittests/Support/ParallelTest.cpp
@@ -31,7 +31,7 @@ TEST(Parallel, sort) {
     i = dist(randEngine);
 
   sort(parallel::par, std::begin(array), std::end(array));
-  ASSERT_TRUE(std::is_sorted(std::begin(array), std::end(array)));
+  ASSERT_TRUE(llvm::is_sorted(array));
 }
 
 TEST(Parallel, parallel_for) {