1 files changed, 9 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.h b/llvm/lib/Target/ARM/ARMISelLowering.h
index 19aac816498..96b56c3ec33 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.h
+++ b/llvm/lib/Target/ARM/ARMISelLowering.h
@@ -580,6 +580,15 @@ namespace llvm {
                             SmallVectorImpl<SDValue> &InVals,
                             bool isThisReturn, SDValue ThisVal) const;
 
+    bool supportSplitCSR(MachineFunction *MF) const override {
+      return MF->getFunction()->getCallingConv() == CallingConv::CXX_FAST_TLS &&
+          MF->getFunction()->hasFnAttribute(Attribute::NoUnwind);
+    }
+    void initializeSplitCSR(MachineBasicBlock *Entry) const override;
+    void insertCopiesSplitCSR(
+      MachineBasicBlock *Entry,
+      const SmallVectorImpl<MachineBasicBlock *> &Exits) const override;
+
     SDValue
       LowerFormalArguments(SDValue Chain,
                            CallingConv::ID CallConv, bool isVarArg,