diff --git a/lib/Target/ARM/ARMBaseRegisterInfo.cpp b/lib/Target/ARM/ARMBaseRegisterInfo.cpp
index 6dc0493c797..8744f1c6221 100644
--- a/lib/Target/ARM/ARMBaseRegisterInfo.cpp
+++ b/lib/Target/ARM/ARMBaseRegisterInfo.cpp
@@ -60,9 +60,8 @@ ARMBaseRegisterInfo::ARMBaseRegisterInfo(const ARMSubtarget &sti)
 
 const MCPhysReg*
 ARMBaseRegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
-  const MCPhysReg *RegList = (STI.isTargetIOS() && !STI.isAAPCS_ABI())
-                                ? CSR_iOS_SaveList
-                                : CSR_AAPCS_SaveList;
+  const MCPhysReg *RegList =
+      STI.isTargetDarwin() ? CSR_iOS_SaveList : CSR_AAPCS_SaveList;
 
   if (!MF) return RegList;
 
@@ -95,8 +94,7 @@ ARMBaseRegisterInfo::getCallPreservedMask(CallingConv::ID CC) const {
   if (CC == CallingConv::GHC)
     // This is academic becase all GHC calls are (supposed to be) tail calls
     return CSR_NoRegs_RegMask;
-  return (STI.isTargetIOS() && !STI.isAAPCS_ABI())
-    ? CSR_iOS_RegMask : CSR_AAPCS_RegMask;
+  return STI.isTargetDarwin() ? CSR_iOS_RegMask : CSR_AAPCS_RegMask;
 }
 
 const uint32_t*
@@ -117,8 +115,8 @@ ARMBaseRegisterInfo::getThisReturnPreservedMask(CallingConv::ID CC) const {
   if (CC == CallingConv::GHC)
     // This is academic becase all GHC calls are (supposed to be) tail calls
     return nullptr;
-  return (STI.isTargetIOS() && !STI.isAAPCS_ABI())
-    ? CSR_iOS_ThisReturn_RegMask : CSR_AAPCS_ThisReturn_RegMask;
+  return STI.isTargetDarwin() ? CSR_iOS_ThisReturn_RegMask
+                              : CSR_AAPCS_ThisReturn_RegMask;
 }
 
 BitVector ARMBaseRegisterInfo::
diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td
index 12be8fb469f..5b0c6f384e8 100644
--- a/lib/Target/ARM/ARMInstrInfo.td
+++ b/lib/Target/ARM/ARMInstrInfo.td
@@ -263,8 +263,6 @@ def IsNotMClass      : Predicate<"!Subtarget->isMClass()">,
                                                     "!armv*m">;
 def IsARM            : Predicate<"!Subtarget->isThumb()">,
                                  AssemblerPredicate<"!ModeThumb", "arm-mode">;
-def IsIOS            : Predicate<"Subtarget->isTargetIOS()">;
-def IsNotIOS         : Predicate<"!Subtarget->isTargetIOS()">;
 def IsMachO          : Predicate<"Subtarget->isTargetMachO()">;
 def IsNotMachO       : Predicate<"!Subtarget->isTargetMachO()">;
 def IsNaCl           : Predicate<"Subtarget->isTargetNaCl()">;
@@ -5262,7 +5260,7 @@ let isBarrier = 1, hasSideEffects = 1, isTerminator = 1,
 def Int_eh_sjlj_longjmp : PseudoInst<(outs), (ins GPR:$src, GPR:$scratch),
                              NoItinerary,
                          [(ARMeh_sjlj_longjmp GPR:$src, GPR:$scratch)]>,
-                                Requires<[IsARM, IsIOS]>;
+                                Requires<[IsARM]>;
 }
 
 // eh.sjlj.dispatchsetup pseudo-instruction.
diff --git a/lib/Target/ARM/ARMInstrThumb.td b/lib/Target/ARM/ARMInstrThumb.td
index 968bfce2d37..cc953c637cb 100644
--- a/lib/Target/ARM/ARMInstrThumb.td
+++ b/lib/Target/ARM/ARMInstrThumb.td
@@ -1297,7 +1297,7 @@ def tInt_eh_sjlj_longjmp : XI<(outs), (ins GPR:$src, GPR:$scratch),
                               AddrModeNone, 0, IndexModeNone,
                               Pseudo, NoItinerary, "", "",
                               [(ARMeh_sjlj_longjmp GPR:$src, GPR:$scratch)]>,
-                             Requires<[IsThumb, IsIOS]>;
+                             Requires<[IsThumb]>;
 
 //===----------------------------------------------------------------------===//
 // Non-Instruction Patterns
diff --git a/lib/Target/ARM/ARMSubtarget.cpp b/lib/Target/ARM/ARMSubtarget.cpp
index e53cef17140..fa653759df4 100644
--- a/lib/Target/ARM/ARMSubtarget.cpp
+++ b/lib/Target/ARM/ARMSubtarget.cpp
@@ -215,7 +215,7 @@ void ARMSubtarget::initializeEnvironment() {
 
 void ARMSubtarget::initSubtargetFeatures(StringRef CPU, StringRef FS) {
   if (CPUString.empty()) {
-    if (isTargetIOS() && TargetTriple.getArchName().endswith("v7s"))
+    if (isTargetDarwin() && TargetTriple.getArchName().endswith("v7s"))
       // Default to the Swift CPU when targeting armv7s/thumbv7s.
       CPUString = "swift";
     else