Index: lib/Target/AMDGPU/AMDGPUISelLowering.h
===================================================================
--- lib/Target/AMDGPU/AMDGPUISelLowering.h
+++ lib/Target/AMDGPU/AMDGPUISelLowering.h
@@ -216,10 +216,25 @@
   /// \brief Helper function that adds Reg to the LiveIn list of the DAG's
   /// MachineFunction.
   ///
-  /// \returns a RegisterSDNode representing Reg.
-  virtual SDValue CreateLiveInRegister(SelectionDAG &DAG,
-                                       const TargetRegisterClass *RC,
-                                       unsigned Reg, EVT VT) const;
+  /// \returns a RegisterSDNode representing Reg if \p RawReg is true, otherwise
+  /// a copy from the register.
+  SDValue CreateLiveInRegister(SelectionDAG &DAG,
+                               const TargetRegisterClass *RC,
+                               unsigned Reg, EVT VT,
+                               const SDLoc &SL,
+                               bool RawReg = false) const;
+  SDValue CreateLiveInRegister(SelectionDAG &DAG,
+                               const TargetRegisterClass *RC,
+                               unsigned Reg, EVT VT) const {
+    return CreateLiveInRegister(DAG, RC, Reg, VT, SDLoc(DAG.getEntryNode()));
+  }
+
+  // Returns the raw live in register rather than a copy from it.
+  SDValue CreateLiveInRegisterRaw(SelectionDAG &DAG,
+                                  const TargetRegisterClass *RC,
+                                  unsigned Reg, EVT VT) const {
+    return CreateLiveInRegister(DAG, RC, Reg, VT, SDLoc(DAG.getEntryNode()), true);
+  }
 
   enum ImplicitParameter {
     FIRST_IMPLICIT,
Index: lib/Target/AMDGPU/AMDGPUISelLowering.cpp
===================================================================
--- lib/Target/AMDGPU/AMDGPUISelLowering.cpp
+++ lib/Target/AMDGPU/AMDGPUISelLowering.cpp
@@ -3527,18 +3527,25 @@
 //===----------------------------------------------------------------------===//
 
 SDValue AMDGPUTargetLowering::CreateLiveInRegister(SelectionDAG &DAG,
-                                                  const TargetRegisterClass *RC,
-                                                   unsigned Reg, EVT VT) const {
+                                                   const TargetRegisterClass *RC,
+                                                   unsigned Reg, EVT VT,
+                                                   const SDLoc &SL,
+                                                   bool RawReg) const {
   MachineFunction &MF = DAG.getMachineFunction();
   MachineRegisterInfo &MRI = MF.getRegInfo();
-  unsigned VirtualRegister;
+  unsigned VReg;
+
   if (!MRI.isLiveIn(Reg)) {
-    VirtualRegister = MRI.createVirtualRegister(RC);
-    MRI.addLiveIn(Reg, VirtualRegister);
+    VReg = MRI.createVirtualRegister(RC);
+    MRI.addLiveIn(Reg, VReg);
   } else {
-    VirtualRegister = MRI.getLiveInVirtReg(Reg);
+    VReg = MRI.getLiveInVirtReg(Reg);
   }
-  return DAG.getRegister(VirtualRegister, VT);
+
+  if (RawReg)
+    return DAG.getRegister(VReg, VT);
+
+  return DAG.getCopyFromReg(DAG.getEntryNode(), SL, VReg, VT);
 }
 
 uint32_t AMDGPUTargetLowering::getImplicitParameterOffset(
Index: lib/Target/AMDGPU/R600ISelLowering.cpp
===================================================================
--- lib/Target/AMDGPU/R600ISelLowering.cpp
+++ lib/Target/AMDGPU/R600ISelLowering.cpp
@@ -584,23 +584,23 @@
       return LowerImplicitParameter(DAG, VT, DL, 8);
 
     case Intrinsic::r600_read_tgid_x:
-      return CreateLiveInRegister(DAG, &AMDGPU::R600_TReg32RegClass,
-                                  AMDGPU::T1_X, VT);
+      return CreateLiveInRegisterRaw(DAG, &AMDGPU::R600_TReg32RegClass,
+                                     AMDGPU::T1_X, VT);
     case Intrinsic::r600_read_tgid_y:
-      return CreateLiveInRegister(DAG, &AMDGPU::R600_TReg32RegClass,
-                                  AMDGPU::T1_Y, VT);
+      return CreateLiveInRegisterRaw(DAG, &AMDGPU::R600_TReg32RegClass,
+                                     AMDGPU::T1_Y, VT);
     case Intrinsic::r600_read_tgid_z:
-      return CreateLiveInRegister(DAG, &AMDGPU::R600_TReg32RegClass,
-                                  AMDGPU::T1_Z, VT);
+      return CreateLiveInRegisterRaw(DAG, &AMDGPU::R600_TReg32RegClass,
+                                     AMDGPU::T1_Z, VT);
     case Intrinsic::r600_read_tidig_x:
-      return CreateLiveInRegister(DAG, &AMDGPU::R600_TReg32RegClass,
-                                  AMDGPU::T0_X, VT);
+      return CreateLiveInRegisterRaw(DAG, &AMDGPU::R600_TReg32RegClass,
+                                     AMDGPU::T0_X, VT);
     case Intrinsic::r600_read_tidig_y:
-      return CreateLiveInRegister(DAG, &AMDGPU::R600_TReg32RegClass,
-                                  AMDGPU::T0_Y, VT);
+      return CreateLiveInRegisterRaw(DAG, &AMDGPU::R600_TReg32RegClass,
+                                     AMDGPU::T0_Y, VT);
     case Intrinsic::r600_read_tidig_z:
-      return CreateLiveInRegister(DAG, &AMDGPU::R600_TReg32RegClass,
-                                  AMDGPU::T0_Z, VT);
+      return CreateLiveInRegisterRaw(DAG, &AMDGPU::R600_TReg32RegClass,
+                                     AMDGPU::T0_Z, VT);
 
     case Intrinsic::r600_recipsqrt_ieee:
       return DAG.getNode(AMDGPUISD::RSQ, DL, VT, Op.getOperand(1));
Index: lib/Target/AMDGPU/SIISelLowering.h
===================================================================
--- lib/Target/AMDGPU/SIISelLowering.h
+++ lib/Target/AMDGPU/SIISelLowering.h
@@ -216,8 +216,6 @@
   void AdjustInstrPostInstrSelection(MachineInstr &MI,
                                      SDNode *Node) const override;
 
-  SDValue CreateLiveInRegister(SelectionDAG &DAG, const TargetRegisterClass *RC,
-                               unsigned Reg, EVT VT) const override;
   SDNode *legalizeTargetIndependentNode(SDNode *Node, SelectionDAG &DAG) const;
 
   MachineSDNode *wrapAddr64Rsrc(SelectionDAG &DAG, const SDLoc &DL,
Index: lib/Target/AMDGPU/SIISelLowering.cpp
===================================================================
--- lib/Target/AMDGPU/SIISelLowering.cpp
+++ lib/Target/AMDGPU/SIISelLowering.cpp
@@ -5425,15 +5425,6 @@
   return DAG.getMachineNode(AMDGPU::REG_SEQUENCE, DL, MVT::v4i32, Ops);
 }
 
-SDValue SITargetLowering::CreateLiveInRegister(SelectionDAG &DAG,
-                                               const TargetRegisterClass *RC,
-                                               unsigned Reg, EVT VT) const {
-  SDValue VReg = AMDGPUTargetLowering::CreateLiveInRegister(DAG, RC, Reg, VT);
-
-  return DAG.getCopyFromReg(DAG.getEntryNode(), SDLoc(DAG.getEntryNode()),
-                            cast<RegisterSDNode>(VReg)->getReg(), VT);
-}
-
 //===----------------------------------------------------------------------===//
 //                         SI Inline Assembly Support
 //===----------------------------------------------------------------------===//