Index: lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
===================================================================
--- lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -2034,27 +2034,25 @@
   MachineFrameInfo *MFI = ParentBB->getParent()->getFrameInfo();
   int FI = MFI->getStackProtectorIndex();
 
-  const Module &M = *ParentBB->getParent()->getFunction()->getParent();
-  const Value *IRGuard = TLI.getSDStackGuard(M);
-  assert(IRGuard && "Currently there must be an IR guard in order to use "
-                    "SelectionDAG SSP");
-  SDValue GuardPtr = getValue(IRGuard);
-  SDValue StackSlotPtr = DAG.getFrameIndex(FI, PtrTy);
-
-  unsigned Align = DL->getPrefTypeAlignment(IRGuard->getType());
-
   SDValue Guard;
   SDLoc dl = getCurSDLoc();
+  SDValue StackSlotPtr = DAG.getFrameIndex(FI, PtrTy);
+  const Module &M = *ParentBB->getParent()->getFunction()->getParent();
+  unsigned Align = DL->getPrefTypeAlignment(Type::getInt8PtrTy(M.getContext()));
 
   // If useLoadStackGuardNode returns true, generate LOAD_STACK_GUARD.
   // Otherwise, emit a volatile load to retrieve the stack guard value.
   SDValue Chain = DAG.getEntryNode();
-  if (TLI.useLoadStackGuardNode())
+  if (TLI.useLoadStackGuardNode()) {
     Guard = getLoadStackGuard(DAG, dl, Chain);
-  else
+  } else {
+    const Value *IRGuard = TLI.getSDStackGuard(M);
+    SDValue GuardPtr = getValue(IRGuard);
+
     Guard =
         DAG.getLoad(PtrTy, dl, Chain, GuardPtr, MachinePointerInfo(IRGuard, 0),
                     true, false, false, Align);
+  }
 
   SDValue StackSlot = DAG.getLoad(
       PtrTy, dl, DAG.getEntryNode(), StackSlotPtr,
Index: lib/Target/PowerPC/PPCISelLowering.h
===================================================================
--- lib/Target/PowerPC/PPCISelLowering.h
+++ lib/Target/PowerPC/PPCISelLowering.h
@@ -688,6 +688,11 @@
     unsigned
     getExceptionSelectorRegister(const Constant *PersonalityFn) const override;
 
+    /// Override to support customized stack guard loading.
+    bool useLoadStackGuardNode() const override;
+    void insertSSPDeclarations(Module &M) const override;
+    Value *getSDStackGuard(const Module &M) const override;
+
   private:
     struct ReuseLoadInfo {
       SDValue Ptr;
Index: lib/Target/PowerPC/PPCISelLowering.cpp
===================================================================
--- lib/Target/PowerPC/PPCISelLowering.cpp
+++ lib/Target/PowerPC/PPCISelLowering.cpp
@@ -12013,3 +12013,23 @@
         .addReg(NewVR);
   }
 }
+
+bool PPCTargetLowering::useLoadStackGuardNode() const {
+  if (!Subtarget.isTargetLinux()) {
+    return TargetLowering::useLoadStackGuardNode();
+  }
+  return true;
+}
+
+void PPCTargetLowering::insertSSPDeclarations(Module &M) const {
+  if (!Subtarget.isTargetLinux()) {
+    return TargetLowering::insertSSPDeclarations(M);
+  }
+}
+
+Value *PPCTargetLowering::getSDStackGuard(const Module &M) const {
+  if (!Subtarget.isTargetLinux()) {
+    return TargetLowering::getSDStackGuard(M);
+  }
+  return nullptr;
+}
Index: lib/Target/PowerPC/PPCInstrInfo.h
===================================================================
--- lib/Target/PowerPC/PPCInstrInfo.h
+++ lib/Target/PowerPC/PPCInstrInfo.h
@@ -272,6 +272,8 @@
 
   ArrayRef<std::pair<unsigned, const char *>>
   getSerializableBitmaskMachineOperandTargetFlags() const override;
+
+  bool expandPostRAPseudo(MachineBasicBlock::iterator MI) const override;
 };
 
 }
Index: lib/Target/PowerPC/PPCInstrInfo.cpp
===================================================================
--- lib/Target/PowerPC/PPCInstrInfo.cpp
+++ lib/Target/PowerPC/PPCInstrInfo.cpp
@@ -1857,3 +1857,17 @@
   return makeArrayRef(TargetFlags);
 }
 
+bool PPCInstrInfo::expandPostRAPseudo(MachineBasicBlock::iterator MI) const {
+  switch (MI->getOpcode()) {
+  case TargetOpcode::LOAD_STACK_GUARD: {
+    const int64_t Offset = Subtarget.isPPC64() ? -0x7010 : -0x7008;
+    const unsigned Reg = Subtarget.isPPC64() ? PPC::X13 : PPC::R2;
+    MI->setDesc(get(PPC::LD));
+    MachineInstrBuilder(*MI->getParent()->getParent(), MI)
+        .addImm(Offset)
+        .addReg(Reg);
+    return true;
+  }
+  }
+  return false;
+}
Index: lib/Target/PowerPC/PPCSubtarget.h
===================================================================
--- lib/Target/PowerPC/PPCSubtarget.h
+++ lib/Target/PowerPC/PPCSubtarget.h
@@ -286,6 +286,7 @@
 
   bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); }
   bool isTargetMachO() const { return TargetTriple.isOSBinFormatMachO(); }
+  bool isTargetLinux() const { return TargetTriple.isOSLinux(); }
 
   bool isDarwinABI() const { return isTargetMachO() || isDarwin(); }
   bool isSVR4ABI() const { return !isDarwinABI(); }
Index: test/CodeGen/PowerPC/stack-protector.ll
===================================================================
--- test/CodeGen/PowerPC/stack-protector.ll
+++ test/CodeGen/PowerPC/stack-protector.ll
@@ -1,6 +1,17 @@
-; RUN: llc -march=ppc32 -mtriple=ppc32-unknown-linux < %s | FileCheck %s
-; CHECK: __stack_chk_guard
-; CHECK: __stack_chk_fail
+; RUN: llc -mtriple=powerpc-apple-darwin8 < %s | FileCheck -check-prefix=DARWIN32 %s
+; RUN: llc -mtriple=powerpc64-apple-darwin < %s | FileCheck -check-prefix=DARWIN64 %s
+; RUN: llc -mtriple=ppc32-unknown-linux < %s | FileCheck -check-prefix=LINUX32 %s
+; RUN: llc -mtriple=powerpc64le-unknown-linux < %s | FileCheck -check-prefix=LINUX64 %s
+
+; DARWIN32: __stack_chk_guard
+; DARWIN64: __stack_chk_guard
+; LINUX32: ld {{[0-9]+}}, -28680(2)
+; LINUX64: ld {{[0-9]+}}, -28688(13)
+
+; DARWIN32: __stack_chk_fail
+; DARWIN64: __stack_chk_fail
+; LINUX32: __stack_chk_fail
+; LINUX64: __stack_chk_fail
 
 @"\01LC" = internal constant [11 x i8] c"buf == %s\0A\00"		; <[11 x i8]*> [#uses=1]