Index: lib/Target/AMDGPU/SIISelLowering.h
===================================================================
--- lib/Target/AMDGPU/SIISelLowering.h
+++ lib/Target/AMDGPU/SIISelLowering.h
@@ -59,6 +59,8 @@
 
   SDValue getSegmentAperture(unsigned AS, SelectionDAG &DAG) const;
   SDValue lowerADDRSPACECAST(SDValue Op, SelectionDAG &DAG) const;
+  SDValue lowerINSERT_VECTOR_ELT(SDValue Op, SelectionDAG &DAG) const;
+  SDValue lowerEXTRACT_VECTOR_ELT(SDValue Op, SelectionDAG &DAG) const;
   SDValue lowerTRAP(SDValue Op, SelectionDAG &DAG) const;
 
   void adjustWritemask(MachineSDNode *&N, SelectionDAG &DAG) const;
@@ -167,6 +169,9 @@
   MVT getScalarShiftAmountTy(const DataLayout &, EVT) const override;
   bool isFMAFasterThanFMulAndFAdd(EVT VT) const override;
   SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const override;
+  void ReplaceNodeResults(SDNode *N, SmallVectorImpl<SDValue> &Results,
+                          SelectionDAG &DAG) const override;
+
   SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const override;
   SDNode *PostISelFolding(MachineSDNode *N, SelectionDAG &DAG) const override;
   void AdjustInstrPostInstrSelection(MachineInstr &MI,
Index: lib/Target/AMDGPU/SIISelLowering.cpp
===================================================================
--- lib/Target/AMDGPU/SIISelLowering.cpp
+++ lib/Target/AMDGPU/SIISelLowering.cpp
@@ -189,6 +189,13 @@
   setOperationAction(ISD::VECTOR_SHUFFLE, MVT::v16i32, Expand);
   setOperationAction(ISD::VECTOR_SHUFFLE, MVT::v16f32, Expand);
 
+  // Avoid stack access for these.
+  // TODO: Generalize to more vector types.
+  setOperationAction(ISD::INSERT_VECTOR_ELT, MVT::v2i16, Custom);
+  setOperationAction(ISD::INSERT_VECTOR_ELT, MVT::v2f16, Custom);
+  setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v2i16, Custom);
+  setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v2f16, Custom);
+
   // BUFFER/FLAT_ATOMIC_CMP_SWAP on GCN GPUs needs input marshalling,
   // and output demarshalling
   setOperationAction(ISD::ATOMIC_CMP_SWAP, MVT::i32, Custom);
@@ -1872,6 +1879,10 @@
   case ISD::INTRINSIC_W_CHAIN: return LowerINTRINSIC_W_CHAIN(Op, DAG);
   case ISD::INTRINSIC_VOID: return LowerINTRINSIC_VOID(Op, DAG);
   case ISD::ADDRSPACECAST: return lowerADDRSPACECAST(Op, DAG);
+  case ISD::INSERT_VECTOR_ELT:
+    return lowerINSERT_VECTOR_ELT(Op, DAG);
+  case ISD::EXTRACT_VECTOR_ELT:
+    return lowerEXTRACT_VECTOR_ELT(Op, DAG);
   case ISD::TRAP: return lowerTRAP(Op, DAG);
   case ISD::FP_ROUND:
     return lowerFP_ROUND(Op, DAG);
@@ -1879,6 +1890,25 @@
   return SDValue();
 }
 
+void SITargetLowering::ReplaceNodeResults(SDNode *N,
+                                          SmallVectorImpl<SDValue> &Results,
+                                          SelectionDAG &DAG) const {
+  switch (N->getOpcode()) {
+  case ISD::INSERT_VECTOR_ELT: {
+    if (SDValue Res = lowerINSERT_VECTOR_ELT(SDValue(N, 0), DAG))
+      Results.push_back(Res);
+    return;
+  }
+  case ISD::EXTRACT_VECTOR_ELT: {
+    if (SDValue Res = lowerEXTRACT_VECTOR_ELT(SDValue(N, 0), DAG))
+      Results.push_back(Res);
+    return;
+  }
+  default:
+    break;
+  }
+}
+
 /// \brief Helper function for LowerBRCOND
 static SDNode *findUser(SDValue Value, unsigned Opcode) {
 
@@ -2174,6 +2204,76 @@
   return DAG.getUNDEF(ASC->getValueType(0));
 }
 
+SDValue SITargetLowering::lowerINSERT_VECTOR_ELT(SDValue Op,
+                                                 SelectionDAG &DAG) const {
+  SDValue Idx = Op.getOperand(2);
+  if (isa<ConstantSDNode>(Idx))
+    return SDValue();
+
+  // Avoid stack access for dynamic indexing.
+  SDLoc SL(Op);
+  SDValue Vec = Op.getOperand(0);
+  SDValue Val = DAG.getNode(ISD::BITCAST, SL, MVT::i16, Op.getOperand(1));
+
+  // v_bfi_b32 (v_bfm_b32 16, (shl idx, 16)), val, vec
+  SDValue ExtVal = DAG.getNode(ISD::ZERO_EXTEND, SL, MVT::i32, Val);
+
+  // Convert vector index to bit-index.
+  SDValue ScaledIdx = DAG.getNode(ISD::SHL, SL, MVT::i32, Idx,
+                                  DAG.getConstant(16, SL, MVT::i32));
+
+  SDValue BCVec = DAG.getNode(ISD::BITCAST, SL, MVT::i32, Vec);
+
+  SDValue BFM = DAG.getNode(ISD::SHL, SL, MVT::i32,
+                            DAG.getConstant(0xffff, SL, MVT::i32),
+                            ScaledIdx);
+
+  SDValue LHS = DAG.getNode(ISD::AND, SL, MVT::i32, BFM, ExtVal);
+  SDValue RHS = DAG.getNode(ISD::AND, SL, MVT::i32,
+                            DAG.getNOT(SL, BFM, MVT::i32), BCVec);
+
+  SDValue BFI = DAG.getNode(ISD::OR, SL, MVT::i32, LHS, RHS);
+  return DAG.getNode(ISD::BITCAST, SL, Op.getValueType(), BFI);
+}
+
+SDValue SITargetLowering::lowerEXTRACT_VECTOR_ELT(SDValue Op,
+                                                  SelectionDAG &DAG) const {
+  SDLoc SL(Op);
+
+  EVT ResultVT = Op.getValueType();
+  SDValue Vec = Op.getOperand(0);
+  SDValue Idx = Op.getOperand(1);
+
+  if (const ConstantSDNode *CIdx = dyn_cast<ConstantSDNode>(Idx)) {
+    SDValue Result = DAG.getNode(ISD::BITCAST, SL, MVT::i32, Vec);
+
+    if (CIdx->getZExtValue() == 1) {
+      Result = DAG.getNode(ISD::SRL, SL, MVT::i32, Result,
+                           DAG.getConstant(16, SL, MVT::i32));
+    } else {
+      assert(CIdx->getZExtValue() == 0);
+    }
+
+    if (ResultVT.bitsLT(MVT::i32))
+      Result = DAG.getNode(ISD::TRUNCATE, SL, MVT::i16, Result);
+    return DAG.getNode(ISD::BITCAST, SL, ResultVT, Result);
+  }
+
+  SDValue Sixteen = DAG.getConstant(16, SL, MVT::i32);
+
+  // Convert vector index to bit-index.
+  SDValue ScaledIdx = DAG.getNode(ISD::SHL, SL, MVT::i32, Idx, Sixteen);
+
+  SDValue BC = DAG.getNode(ISD::BITCAST, SL, MVT::i32, Vec);
+  SDValue Elt = DAG.getNode(ISD::SRL, SL, MVT::i32, BC, ScaledIdx);
+
+  SDValue Result = Elt;
+  if (ResultVT.bitsLT(MVT::i32))
+    Result = DAG.getNode(ISD::TRUNCATE, SL, MVT::i16, Result);
+
+  return DAG.getNode(ISD::BITCAST, SL, ResultVT, Result);
+}
+
 bool
 SITargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const {
   // We can fold offsets for anything that doesn't require a GOT relocation.
Index: test/CodeGen/AMDGPU/amdgpu.private-memory.ll
===================================================================
--- test/CodeGen/AMDGPU/amdgpu.private-memory.ll
+++ test/CodeGen/AMDGPU/amdgpu.private-memory.ll
@@ -227,10 +227,14 @@
 
 ; R600: MOVA_INT
 
-; SI-PROMOTE-DAG: buffer_store_short v{{[0-9]+}}, off, s[{{[0-9]+:[0-9]+}}], s{{[0-9]+}} ; encoding: [0x00,0x00,0x68,0xe0
-; SI-PROMOTE-DAG: buffer_store_short v{{[0-9]+}}, off, s[{{[0-9]+:[0-9]+}}], s{{[0-9]+}} offset:2 ; encoding: [0x02,0x00,0x68,0xe0
+; SI-ALLOCA-DAG: buffer_store_short v{{[0-9]+}}, off, s[{{[0-9]+:[0-9]+}}], s{{[0-9]+}} ; encoding: [0x00,0x00,0x68,0xe0
+; SI-ALLOCA-DAG: buffer_store_short v{{[0-9]+}}, off, s[{{[0-9]+:[0-9]+}}], s{{[0-9]+}} offset:2 ; encoding: [0x02,0x00,0x68,0xe0
 ; Loaded value is 0 or 1, so sext will become zext, so we get buffer_load_ushort instead of buffer_load_sshort.
-; SI-PROMOTE: buffer_load_ushort v{{[0-9]+}}, v{{[0-9]+}}, s[{{[0-9]+:[0-9]+}}], s{{[0-9]+}}
+; SI-ALLOCA: buffer_load_sshort v{{[0-9]+}}, v{{[0-9]+}}, s[{{[0-9]+:[0-9]+}}], s{{[0-9]+}}
+
+; SI-PROMOTE: s_load_dword [[IDX:s[0-9]+]]
+; SI-PROMOTE: s_lshl_b32 [[SCALED_IDX:s[0-9]+]], [[IDX]], 16
+; SI-PROMOTE: v_bfe_u32 v{{[0-9]+}}, v{{[0-9]+}}, [[SCALED_IDX]], 16
 define void @short_array(i32 addrspace(1)* %out, i32 %index) #0 {
 entry:
   %0 = alloca [2 x i16]
Index: test/CodeGen/AMDGPU/extract_vector_elt-f16.ll
===================================================================
--- /dev/null
+++ test/CodeGen/AMDGPU/extract_vector_elt-f16.ll
@@ -0,0 +1,128 @@
+; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=SI %s
+; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=VI %s
+
+; GCN-LABEL: {{^}}extract_vector_elt_v2f16:
+; GCN: s_load_dword [[VEC:s[0-9]+]]
+; GCN: s_lshr_b32 [[ELT1:s[0-9]+]], [[VEC]], 16
+; GCN-DAG: v_mov_b32_e32 [[VELT0:v[0-9]+]], [[VEC]]
+; GCN-DAG: v_mov_b32_e32 [[VELT1:v[0-9]+]], [[ELT1]]
+; GCN-DAG: buffer_store_short [[VELT0]]
+; GCN-DAG: buffer_store_short [[VELT1]]
+define void @extract_vector_elt_v2f16(half addrspace(1)* %out, <2 x half> addrspace(2)* %vec.ptr) #0 {
+  %vec = load <2 x half>, <2 x half> addrspace(2)* %vec.ptr
+  %p0 = extractelement <2 x half> %vec, i32 0
+  %p1 = extractelement <2 x half> %vec, i32 1
+  %out1 = getelementptr half, half addrspace(1)* %out, i32 10
+  store half %p1, half addrspace(1)* %out, align 2
+  store half %p0, half addrspace(1)* %out1, align 2
+  ret void
+}
+
+; GCN-LABEL: {{^}}extract_vector_elt_v2f16_dynamic_sgpr:
+; GCN: s_load_dword [[IDX:s[0-9]+]]
+; GCN: s_load_dword [[VEC:s[0-9]+]]
+; GCN: s_lshl_b32 [[IDX_SCALED:s[0-9]+]], [[IDX]], 16
+; GCN: s_lshr_b32 [[ELT1:s[0-9]+]], [[VEC]], [[IDX_SCALED]]
+; GCN: v_mov_b32_e32 [[VELT1:v[0-9]+]], [[ELT1]]
+; GCN: buffer_store_short [[VELT1]]
+; GCN: ScratchSize: 0
+define void @extract_vector_elt_v2f16_dynamic_sgpr(half addrspace(1)* %out, <2 x half> addrspace(2)* %vec.ptr, i32 %idx) #0 {
+  %vec = load <2 x half>, <2 x half> addrspace(2)* %vec.ptr
+  %elt = extractelement <2 x half> %vec, i32 %idx
+  store half %elt, half addrspace(1)* %out, align 2
+  ret void
+}
+
+; GCN-LABEL: {{^}}extract_vector_elt_v2f16_dynamic_vgpr:
+; GCN-DAG: s_load_dword [[VEC:s[0-9]+]]
+; GCN-DAG: {{flat|buffer}}_load_dword [[IDX:v[0-9]+]]
+; GCN: v_lshlrev_b32_e32 [[IDX_SCALED:v[0-9]+]], 16, [[IDX]]
+
+; SI: v_lshr_b32_e32 [[ELT:v[0-9]+]], [[VEC]], [[IDX_SCALED]]
+; VI: v_lshrrev_b32_e64 [[ELT:v[0-9]+]], [[IDX_SCALED]], [[VEC]]
+
+
+; SI: buffer_store_short [[ELT]]
+; VI: flat_store_short v{{\[[0-9]+:[0-9]+\]}}, [[ELT]]
+; GCN: ScratchSize: 0{{$}}
+define void @extract_vector_elt_v2f16_dynamic_vgpr(half addrspace(1)* %out, <2 x half> addrspace(2)* %vec.ptr, i32 addrspace(1)* %idx.ptr) #0 {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x()
+  %tid.ext = sext i32 %tid to i64
+  %gep = getelementptr inbounds i32, i32 addrspace(1)* %idx.ptr, i64 %tid.ext
+  %out.gep = getelementptr inbounds half, half addrspace(1)* %out, i64 %tid.ext
+  %vec = load <2 x half>, <2 x half> addrspace(2)* %vec.ptr
+  %idx = load i32, i32 addrspace(1)* %gep
+  %elt = extractelement <2 x half> %vec, i32 %idx
+  store half %elt, half addrspace(1)* %out.gep, align 2
+  ret void
+}
+
+; GCN-LABEL: {{^}}extract_vector_elt_v3f16:
+; GCN: buffer_load_ushort
+; GCN: buffer_store_short
+; GCN: buffer_store_short
+define void @extract_vector_elt_v3f16(half addrspace(1)* %out, <3 x half> %foo) #0 {
+  %p0 = extractelement <3 x half> %foo, i32 0
+  %p1 = extractelement <3 x half> %foo, i32 2
+  %out1 = getelementptr half, half addrspace(1)* %out, i32 1
+  store half %p1, half addrspace(1)* %out, align 2
+  store half %p0, half addrspace(1)* %out1, align 2
+  ret void
+}
+
+; GCN-LABEL: {{^}}extract_vector_elt_v4f16:
+; GCN: buffer_load_ushort
+; GCN: buffer_load_ushort
+; GCN: buffer_store_short
+; GCN: buffer_store_short
+define void @extract_vector_elt_v4f16(half addrspace(1)* %out, <4 x half> %foo) #0 {
+  %p0 = extractelement <4 x half> %foo, i32 0
+  %p1 = extractelement <4 x half> %foo, i32 2
+  %out1 = getelementptr half, half addrspace(1)* %out, i32 10
+  store half %p1, half addrspace(1)* %out, align 2
+  store half %p0, half addrspace(1)* %out1, align 2
+  ret void
+}
+
+; GCN-LABEL: {{^}}dynamic_extract_vector_elt_v3f16:
+; GCN: buffer_load_ushort
+; GCN: buffer_load_ushort
+; GCN: buffer_load_ushort
+
+; GCN: buffer_store_short
+; GCN: buffer_store_short
+; GCN: buffer_store_short
+
+; GCN: buffer_load_ushort
+; GCN: buffer_store_short
+define void @dynamic_extract_vector_elt_v3f16(half addrspace(1)* %out, <3 x half> %foo, i32 %idx) #0 {
+  %p0 = extractelement <3 x half> %foo, i32 %idx
+  %out1 = getelementptr half, half addrspace(1)* %out, i32 1
+  store half %p0, half addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: {{^}}dynamic_extract_vector_elt_v4f16:
+; GCN: buffer_load_ushort
+; GCN: buffer_load_ushort
+; GCN: buffer_load_ushort
+; GCN: buffer_load_ushort
+
+; GCN: buffer_store_short
+; GCN: buffer_store_short
+; GCN: buffer_store_short
+; GCN: buffer_store_short
+
+; GCN: buffer_load_ushort
+; GCN: buffer_store_short
+define void @dynamic_extract_vector_elt_v4f16(half addrspace(1)* %out, <4 x half> %foo, i32 %idx) #0 {
+  %p0 = extractelement <4 x half> %foo, i32 %idx
+  %out1 = getelementptr half, half addrspace(1)* %out, i32 1
+  store half %p0, half addrspace(1)* %out
+  ret void
+}
+
+declare i32 @llvm.amdgcn.workitem.id.x() #1
+
+attributes #0 = { nounwind }
+attributes #1 = { nounwind readnone }
Index: test/CodeGen/AMDGPU/extract_vector_elt-i16.ll
===================================================================
--- test/CodeGen/AMDGPU/extract_vector_elt-i16.ll
+++ test/CodeGen/AMDGPU/extract_vector_elt-i16.ll
@@ -2,13 +2,16 @@
 ; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=VI %s
 
 ; GCN-LABEL: {{^}}extract_vector_elt_v2i16:
-; GCN: buffer_load_ushort
-; GCN: buffer_load_ushort
-; GCN: buffer_store_short
-; GCN: buffer_store_short
-define void @extract_vector_elt_v2i16(i16 addrspace(1)* %out, <2 x i16> %foo) #0 {
-  %p0 = extractelement <2 x i16> %foo, i32 0
-  %p1 = extractelement <2 x i16> %foo, i32 1
+; GCN: s_load_dword [[VEC:s[0-9]+]]
+; GCN: s_lshr_b32 [[ELT1:s[0-9]+]], [[VEC]], 16
+; GCN-DAG: v_mov_b32_e32 [[VELT0:v[0-9]+]], [[VEC]]
+; GCN-DAG: v_mov_b32_e32 [[VELT1:v[0-9]+]], [[ELT1]]
+; GCN-DAG: buffer_store_short [[VELT0]]
+; GCN-DAG: buffer_store_short [[VELT1]]
+define void @extract_vector_elt_v2i16(i16 addrspace(1)* %out, <2 x i16> addrspace(2)* %vec.ptr) #0 {
+  %vec = load <2 x i16>, <2 x i16> addrspace(2)* %vec.ptr
+  %p0 = extractelement <2 x i16> %vec, i32 0
+  %p1 = extractelement <2 x i16> %vec, i32 1
   %out1 = getelementptr i16, i16 addrspace(1)* %out, i32 10
   store i16 %p1, i16 addrspace(1)* %out, align 2
   store i16 %p0, i16 addrspace(1)* %out1, align 2
@@ -16,10 +19,13 @@
 }
 
 ; GCN-LABEL: {{^}}extract_vector_elt_v2i16_dynamic_sgpr:
-; GCN: s_load_dword [[VEC:s[0-9]+]]
 ; GCN: s_load_dword [[IDX:s[0-9]+]]
-; GCN: s_lshr_b32 s{{[0-9]+}}, [[IDX]], 16
-; GCN: v_mov_b32_e32 [[VVEC:v[0-9]+]], [[VEC]]
+; GCN: s_load_dword [[VEC:s[0-9]+]]
+; GCN: s_lshl_b32 [[IDX_SCALED:s[0-9]+]], [[IDX]], 16
+; GCN: s_lshr_b32 [[ELT1:s[0-9]+]], [[VEC]], [[IDX_SCALED]]
+; GCN: v_mov_b32_e32 [[VELT1:v[0-9]+]], [[ELT1]]
+; GCN: buffer_store_short [[VELT1]]
+; GCN: ScratchSize: 0
 define void @extract_vector_elt_v2i16_dynamic_sgpr(i16 addrspace(1)* %out, <2 x i16> addrspace(2)* %vec.ptr, i32 %idx) #0 {
   %vec = load <2 x i16>, <2 x i16> addrspace(2)* %vec.ptr
   %elt = extractelement <2 x i16> %vec, i32 %idx
@@ -28,16 +34,23 @@
 }
 
 ; GCN-LABEL: {{^}}extract_vector_elt_v2i16_dynamic_vgpr:
-; GCN: {{buffer|flat}}_load_dword [[IDX:v[0-9]+]]
-; GCN: buffer_load_dword [[VEC:v[0-9]+]]
-; GCN: v_lshrrev_b32_e32 [[ELT:v[0-9]+]], 16, [[VEC]]
-define void @extract_vector_elt_v2i16_dynamic_vgpr(i16 addrspace(1)* %out, <2 x i16> addrspace(1)* %vec.ptr, i32 addrspace(1)* %idx.ptr) #0 {
+; GCN-DAG: s_load_dword [[VEC:s[0-9]+]]
+; GCN-DAG: {{flat|buffer}}_load_dword [[IDX:v[0-9]+]]
+; GCN: v_lshlrev_b32_e32 [[IDX_SCALED:v[0-9]+]], 16, [[IDX]]
+
+; SI: v_lshr_b32_e32 [[ELT:v[0-9]+]], [[VEC]], [[IDX_SCALED]]
+; VI: v_lshrrev_b32_e64 [[ELT:v[0-9]+]], [[IDX_SCALED]], [[VEC]]
+
+; SI: buffer_store_short [[ELT]]
+; VI: flat_store_short v{{\[[0-9]+:[0-9]+\]}}, [[ELT]]
+; GCN: ScratchSize: 0{{$}}
+define void @extract_vector_elt_v2i16_dynamic_vgpr(i16 addrspace(1)* %out, <2 x i16> addrspace(2)* %vec.ptr, i32 addrspace(1)* %idx.ptr) #0 {
   %tid = call i32 @llvm.amdgcn.workitem.id.x()
   %tid.ext = sext i32 %tid to i64
   %gep = getelementptr inbounds i32, i32 addrspace(1)* %idx.ptr, i64 %tid.ext
   %out.gep = getelementptr inbounds i16, i16 addrspace(1)* %out, i64 %tid.ext
   %idx = load volatile i32, i32 addrspace(1)* %gep
-  %vec = load <2 x i16>, <2 x i16> addrspace(1)* %vec.ptr
+  %vec = load <2 x i16>, <2 x i16> addrspace(2)* %vec.ptr
   %elt = extractelement <2 x i16> %vec, i32 %idx
   store i16 %elt, i16 addrspace(1)* %out.gep, align 2
   ret void
Index: test/CodeGen/AMDGPU/insert_vector_elt.v2i16.ll
===================================================================
--- /dev/null
+++ test/CodeGen/AMDGPU/insert_vector_elt.v2i16.ll
@@ -0,0 +1,350 @@
+; RUN: llc -verify-machineinstrs -march=amdgcn -mcpu=fiji -mattr=+flat-for-global < %s | FileCheck -check-prefix=GCN -check-prefix=CIVI -check-prefix=VI %s
+; RUN: llc -verify-machineinstrs -march=amdgcn -mcpu=hawaii -mattr=+flat-for-global < %s | FileCheck -check-prefix=GCN -check-prefix=CIVI -check-prefix=CI %s
+
+; GCN-LABEL: {{^}}s_insertelement_v2i16_0:
+; GCN: s_load_dword [[VEC:s[0-9]+]]
+
+; CIVI: s_and_b32 [[ELT1:s[0-9]+]], [[VEC]], 0xffff0000{{$}}
+; CIVI: s_or_b32 s{{[0-9]+}}, [[ELT1]], 0x3e7{{$}}
+define void @s_insertelement_v2i16_0(<2 x i16> addrspace(1)* %out, <2 x i16> addrspace(2)* %vec.ptr) #0 {
+  %vec = load <2 x i16>, <2 x i16> addrspace(2)* %vec.ptr
+  %vecins = insertelement <2 x i16> %vec, i16 999, i32 0
+  store <2 x i16> %vecins, <2 x i16> addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: {{^}}s_insertelement_v2i16_0_reg:
+; GCN: s_load_dword [[ELT0:s[0-9]+]]
+; GCN: s_load_dword [[VEC:s[0-9]+]]
+
+; CIVI-DAG: s_and_b32 [[ELT0]], [[ELT0]], 0xffff{{$}}
+; CIVI-DAG: s_and_b32 [[ELT1:s[0-9]+]], [[VEC]], 0xffff0000{{$}}
+; CIVI: s_or_b32 s{{[0-9]+}}, [[ELT0]], [[ELT1]]
+define void @s_insertelement_v2i16_0_reg(<2 x i16> addrspace(1)* %out, <2 x i16> addrspace(2)* %vec.ptr, i16 %elt) #0 {
+  %vec = load <2 x i16>, <2 x i16> addrspace(2)* %vec.ptr
+  %vecins = insertelement <2 x i16> %vec, i16 %elt, i32 0
+  store <2 x i16> %vecins, <2 x i16> addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: {{^}}s_insertelement_v2i16_0_reghi:
+; GCN: s_load_dword [[ELT0:s[0-9]+]]
+; GCN: s_load_dword [[VEC:s[0-9]+]]
+
+; CIVI-DAG: s_and_b32 [[ELT1:s[0-9]+]], [[VEC]], 0xffff0000{{$}}
+; CIVI: s_or_b32 s{{[0-9]+}}, [[ELT0]], [[ELT1]]
+define void @s_insertelement_v2i16_0_reghi(<2 x i16> addrspace(1)* %out, <2 x i16> addrspace(2)* %vec.ptr, i32 %elt.arg) #0 {
+  %vec = load <2 x i16>, <2 x i16> addrspace(2)* %vec.ptr
+  %elt.hi = lshr i32 %elt.arg, 16
+  %elt = trunc i32 %elt.hi to i16
+  %vecins = insertelement <2 x i16> %vec, i16 %elt, i32 0
+  store <2 x i16> %vecins, <2 x i16> addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: {{^}}s_insertelement_v2i16_1:
+; GCN: s_load_dword [[VEC:s[0-9]+]]
+
+; GCN-NOT: s_lshr
+; GCN: s_and_b32 [[ELT0:s[0-9]+]], [[VEC]], 0xffff{{$}}
+; GCN: s_or_b32 [[INS:s[0-9]+]], [[ELT0]], 0x3e70000
+define void @s_insertelement_v2i16_1(<2 x i16> addrspace(1)* %out, <2 x i16> addrspace(2)* %vec.ptr) #0 {
+  %vec = load <2 x i16>, <2 x i16> addrspace(2)* %vec.ptr
+  %vecins = insertelement <2 x i16> %vec, i16 999, i32 1
+  store <2 x i16> %vecins, <2 x i16> addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: {{^}}s_insertelement_v2i16_1_reg:
+; GCN: s_load_dword [[ELT1:s[0-9]+]]
+; GCN: s_load_dword [[VEC:s[0-9]+]]
+
+; CIVI: s_and_b32 [[ELT0:s[0-9]+]], [[VEC]], 0xffff{{$}}
+; CIVI: s_or_b32 s{{[0-9]+}}, [[ELT0]], [[ELT1]]
+
+; GCN-NOT: shlr
+define void @s_insertelement_v2i16_1_reg(<2 x i16> addrspace(1)* %out, <2 x i16> addrspace(2)* %vec.ptr, i16 %elt) #0 {
+  %vec = load <2 x i16>, <2 x i16> addrspace(2)* %vec.ptr
+  %vecins = insertelement <2 x i16> %vec, i16 %elt, i32 1
+  store <2 x i16> %vecins, <2 x i16> addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: {{^}}s_insertelement_v2f16_0:
+; GCN: s_load_dword [[VEC:s[0-9]+]]
+; CIVI: s_and_b32 [[ELT1:s[0-9]+]], [[VEC:s[0-9]+]], 0xffff0000
+; CIVI: s_or_b32 s{{[0-9]+}}, [[ELT1]], 0x4500
+define void @s_insertelement_v2f16_0(<2 x half> addrspace(1)* %out, <2 x half> addrspace(2)* %vec.ptr) #0 {
+  %vec = load <2 x half>, <2 x half> addrspace(2)* %vec.ptr
+  %vecins = insertelement <2 x half> %vec, half 5.000000e+00, i32 0
+  store <2 x half> %vecins, <2 x half> addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: {{^}}s_insertelement_v2f16_1:
+; GCN: s_load_dword [[VEC:s[0-9]+]]
+; GCN-NOT: s_lshr
+; GCN: s_and_b32 [[ELT0:s[0-9]+]], [[VEC]], 0xffff{{$}}
+; GCN: s_or_b32 [[INS:s[0-9]+]], [[ELT0]], 0x45000000
+define void @s_insertelement_v2f16_1(<2 x half> addrspace(1)* %out, <2 x half> addrspace(2)* %vec.ptr) #0 {
+  %vec = load <2 x half>, <2 x half> addrspace(2)* %vec.ptr
+  %vecins = insertelement <2 x half> %vec, half 5.000000e+00, i32 1
+  store <2 x half> %vecins, <2 x half> addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: {{^}}v_insertelement_v2i16_0:
+; GCN: flat_load_dword [[VEC:v[0-9]+]]
+; CIVI: v_and_b32_e32 [[ELT1:v[0-9]+]], 0xffff0000, [[VEC]]
+; CIVI: v_or_b32_e32 [[RES:v[0-9]+]], 0x3e7, [[ELT1]]
+; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, [[RES]]
+define void @v_insertelement_v2i16_0(<2 x i16> addrspace(1)* %out, <2 x i16> addrspace(1)* %in) #0 {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x() #1
+  %tid.ext = sext i32 %tid to i64
+  %in.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %in, i64 %tid.ext
+  %out.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %out, i64 %tid.ext
+  %vec = load <2 x i16>, <2 x i16> addrspace(1)* %in.gep
+  %vecins = insertelement <2 x i16> %vec, i16 999, i32 0
+  store <2 x i16> %vecins, <2 x i16> addrspace(1)* %out.gep
+  ret void
+}
+
+; GCN-LABEL: {{^}}v_insertelement_v2i16_0_reghi:
+; GCN-DAG: flat_load_dword [[VEC:v[0-9]+]]
+; GCN-DAG: s_load_dword [[ELT0:s[0-9]+]]
+
+; CIVI-DAG: s_lshr_b32 [[ELT0_SHIFT:s[0-9]+]], [[ELT0]], 16
+; CIVI-DAG: v_and_b32_e32 [[ELT1:v[0-9]+]], 0xffff0000, [[VEC]]
+; CIVI: v_or_b32_e32 [[RES:v[0-9]+]], [[ELT0_SHIFT]], [[ELT1]]
+
+; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, [[RES]]
+define void @v_insertelement_v2i16_0_reghi(<2 x i16> addrspace(1)* %out, <2 x i16> addrspace(1)* %in, i32 %elt.arg) #0 {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x() #1
+  %tid.ext = sext i32 %tid to i64
+  %in.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %in, i64 %tid.ext
+  %out.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %out, i64 %tid.ext
+  %vec = load <2 x i16>, <2 x i16> addrspace(1)* %in.gep
+  %elt.hi = lshr i32 %elt.arg, 16
+  %elt = trunc i32 %elt.hi to i16
+  %vecins = insertelement <2 x i16> %vec, i16 %elt, i32 0
+  store <2 x i16> %vecins, <2 x i16> addrspace(1)* %out.gep
+  ret void
+}
+
+; GCN-LABEL: {{^}}v_insertelement_v2i16_0_inlineimm:
+; GCN-DAG: flat_load_dword [[VEC:v[0-9]+]]
+
+; CIVI: v_and_b32_e32 [[ELT1:v[0-9]+]], 0xffff0000, [[VEC]]
+; CIVI: v_or_b32_e32 [[RES:v[0-9]+]], 53, [[ELT1]]
+
+; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, [[RES]]
+define void @v_insertelement_v2i16_0_inlineimm(<2 x i16> addrspace(1)* %out, <2 x i16> addrspace(1)* %in) #0 {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x() #1
+  %tid.ext = sext i32 %tid to i64
+  %in.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %in, i64 %tid.ext
+  %out.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %out, i64 %tid.ext
+  %vec = load <2 x i16>, <2 x i16> addrspace(1)* %in.gep
+  %vecins = insertelement <2 x i16> %vec, i16 53, i32 0
+  store <2 x i16> %vecins, <2 x i16> addrspace(1)* %out.gep
+  ret void
+}
+
+; FIXME: fold lshl_or c0, c1, v0 -> or (c0 << c1), v0
+
+; GCN-LABEL: {{^}}v_insertelement_v2i16_1:
+; GCN: flat_load_dword [[VEC:v[0-9]+]]
+; CIVI: v_or_b32_e32 [[RES:v[0-9]+]], 0x3e70000, [[VEC]]
+
+; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, [[RES]]
+define void @v_insertelement_v2i16_1(<2 x i16> addrspace(1)* %out, <2 x i16> addrspace(1)* %in) #0 {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x() #1
+  %tid.ext = sext i32 %tid to i64
+  %in.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %in, i64 %tid.ext
+  %out.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %out, i64 %tid.ext
+  %vec = load <2 x i16>, <2 x i16> addrspace(1)* %in.gep
+  %vecins = insertelement <2 x i16> %vec, i16 999, i32 1
+  store <2 x i16> %vecins, <2 x i16> addrspace(1)* %out.gep
+  ret void
+}
+
+; GCN-LABEL: {{^}}v_insertelement_v2i16_1_inlineimm:
+; GCN: flat_load_dword [[VEC:v[0-9]+]]
+; GCN: v_and_b32_e32 [[ELT0:v[0-9]+]], 0xffff, [[VEC]]
+; CIVI: v_or_b32_e32 [[RES:v[0-9]+]], 0xfff10000, [[ELT0]]
+
+; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, [[RES]]
+define void @v_insertelement_v2i16_1_inlineimm(<2 x i16> addrspace(1)* %out, <2 x i16> addrspace(1)* %in) #0 {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x() #1
+  %tid.ext = sext i32 %tid to i64
+  %in.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %in, i64 %tid.ext
+  %out.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %out, i64 %tid.ext
+  %vec = load <2 x i16>, <2 x i16> addrspace(1)* %in.gep
+  %vecins = insertelement <2 x i16> %vec, i16 -15, i32 1
+  store <2 x i16> %vecins, <2 x i16> addrspace(1)* %out.gep
+  ret void
+}
+
+; GCN-LABEL: {{^}}v_insertelement_v2f16_0:
+; GCN: flat_load_dword [[VEC:v[0-9]+]]
+
+; CIVI: v_and_b32_e32 [[ELT1:v[0-9]+]], 0xffff0000, [[VEC]]
+; CIVI: v_or_b32_e32 [[RES:v[0-9]+]], 0x4500, [[ELT1]]
+
+; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, [[RES]]
+define void @v_insertelement_v2f16_0(<2 x half> addrspace(1)* %out, <2 x half> addrspace(1)* %in) #0 {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x() #1
+  %tid.ext = sext i32 %tid to i64
+  %in.gep = getelementptr inbounds <2 x half>, <2 x half> addrspace(1)* %in, i64 %tid.ext
+  %out.gep = getelementptr inbounds <2 x half>, <2 x half> addrspace(1)* %out, i64 %tid.ext
+  %vec = load <2 x half>, <2 x half> addrspace(1)* %in.gep
+  %vecins = insertelement <2 x half> %vec, half 5.000000e+00, i32 0
+  store <2 x half> %vecins, <2 x half> addrspace(1)* %out.gep
+  ret void
+}
+
+; GCN-LABEL: {{^}}v_insertelement_v2f16_0_inlineimm:
+; GCN: flat_load_dword [[VEC:v[0-9]+]]
+
+; CIVI: v_and_b32_e32 [[ELT1:v[0-9]+]], 0xffff0000, [[VEC]]
+; CIVI: v_or_b32_e32 [[RES:v[0-9]+]], 53, [[ELT1]]
+
+; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, [[RES]]
+define void @v_insertelement_v2f16_0_inlineimm(<2 x half> addrspace(1)* %out, <2 x half> addrspace(1)* %in) #0 {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x() #1
+  %tid.ext = sext i32 %tid to i64
+  %in.gep = getelementptr inbounds <2 x half>, <2 x half> addrspace(1)* %in, i64 %tid.ext
+  %out.gep = getelementptr inbounds <2 x half>, <2 x half> addrspace(1)* %out, i64 %tid.ext
+  %vec = load <2 x half>, <2 x half> addrspace(1)* %in.gep
+  %vecins = insertelement <2 x half> %vec, half 0xH0035, i32 0
+  store <2 x half> %vecins, <2 x half> addrspace(1)* %out.gep
+  ret void
+}
+
+; GCN-LABEL: {{^}}v_insertelement_v2f16_1:
+; GCN: flat_load_dword [[VEC:v[0-9]+]]
+; CIVI: v_or_b32_e32 [[RES:v[0-9]+]], 0x45000000, [[VEC]]
+
+; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, [[RES]]
+define void @v_insertelement_v2f16_1(<2 x half> addrspace(1)* %out, <2 x half> addrspace(1)* %in) #0 {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x() #1
+  %tid.ext = sext i32 %tid to i64
+  %in.gep = getelementptr inbounds <2 x half>, <2 x half> addrspace(1)* %in, i64 %tid.ext
+  %out.gep = getelementptr inbounds <2 x half>, <2 x half> addrspace(1)* %out, i64 %tid.ext
+  %vec = load <2 x half>, <2 x half> addrspace(1)* %in.gep
+  %vecins = insertelement <2 x half> %vec, half 5.000000e+00, i32 1
+  store <2 x half> %vecins, <2 x half> addrspace(1)* %out.gep
+  ret void
+}
+
+; GCN-LABEL: {{^}}v_insertelement_v2f16_1_inlineimm:
+; GCN: flat_load_dword [[VEC:v[0-9]+]]
+; GCN: v_and_b32_e32 [[ELT0:v[0-9]+]], 0xffff, [[VEC]]
+; CIVI: v_or_b32_e32 [[RES:v[0-9]+]], 0x230000, [[ELT0]]
+
+; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, [[RES]]
+define void @v_insertelement_v2f16_1_inlineimm(<2 x half> addrspace(1)* %out, <2 x half> addrspace(1)* %in) #0 {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x() #1
+  %tid.ext = sext i32 %tid to i64
+  %in.gep = getelementptr inbounds <2 x half>, <2 x half> addrspace(1)* %in, i64 %tid.ext
+  %out.gep = getelementptr inbounds <2 x half>, <2 x half> addrspace(1)* %out, i64 %tid.ext
+  %vec = load <2 x half>, <2 x half> addrspace(1)* %in.gep
+  %vecins = insertelement <2 x half> %vec, half 0xH0023, i32 1
+  store <2 x half> %vecins, <2 x half> addrspace(1)* %out.gep
+  ret void
+}
+
+; FIXME: Enable for others when argument load not split
+; GCN-LABEL: {{^}}s_insertelement_v2i16_dynamic:
+; GCN-DAG: v_mov_b32_e32 [[K:v[0-9]+]], 0x3e7
+; GCN: s_load_dword [[IDX:s[0-9]+]]
+; GCN: s_load_dword [[VEC:s[0-9]+]]
+; GCN-DAG: v_mov_b32_e32 [[VVEC:v[0-9]+]], [[VEC]]
+; GCN-DAG: s_lshl_b32 [[SCALED_IDX:s[0-9]+]], [[IDX]], 16
+; GCN-DAG: s_lshl_b32 [[MASK:s[0-9]+]], 0xffff, [[SCALED_IDX]]
+; GCN: v_bfi_b32 [[RESULT:v[0-9]+]], [[MASK]], [[K]], [[VVEC]]
+; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, [[RESULT]]
+define void @s_insertelement_v2i16_dynamic(<2 x i16> addrspace(1)* %out, <2 x i16> addrspace(2)* %vec.ptr, i32 addrspace(2)* %idx.ptr) #0 {
+  %idx = load volatile i32, i32 addrspace(2)* %idx.ptr
+  %vec = load <2 x i16>, <2 x i16> addrspace(2)* %vec.ptr
+  %vecins = insertelement <2 x i16> %vec, i16 999, i32 %idx
+  store <2 x i16> %vecins, <2 x i16> addrspace(1)* %out
+  ret void
+}
+
+; GCN-LABEL: {{^}}v_insertelement_v2i16_dynamic_sgpr:
+; GCN-DAG: flat_load_dword [[VEC:v[0-9]+]]
+; GCN-DAG: s_load_dword [[IDX:s[0-9]+]]
+; GCN-DAG: v_mov_b32_e32 [[K:v[0-9]+]], 0x3e7
+; GCN-DAG: s_lshl_b32 [[SCALED_IDX:s[0-9]+]], [[IDX]], 16
+; GCN-DAG: s_lshl_b32 [[MASK:s[0-9]+]], 0xffff, [[SCALED_IDX]]
+; GCN: v_bfi_b32 [[RESULT:v[0-9]+]], [[MASK]], [[K]], [[VEC]]
+; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, [[RESULT]]
+define void @v_insertelement_v2i16_dynamic_sgpr(<2 x i16> addrspace(1)* %out, <2 x i16> addrspace(1)* %in, i32 %idx) #0 {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x() #1
+  %tid.ext = sext i32 %tid to i64
+  %in.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %in, i64 %tid.ext
+  %out.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %out, i64 %tid.ext
+  %vec = load <2 x i16>, <2 x i16> addrspace(1)* %in.gep
+  %vecins = insertelement <2 x i16> %vec, i16 999, i32 %idx
+  store <2 x i16> %vecins, <2 x i16> addrspace(1)* %out.gep
+  ret void
+}
+
+; GCN-LABEL: {{^}}v_insertelement_v2i16_dynamic_vgpr:
+; GCN: flat_load_dword [[IDX:v[0-9]+]]
+; GCN: flat_load_dword [[VEC:v[0-9]+]]
+; GCN-DAG: v_mov_b32_e32 [[K:v[0-9]+]], 0x3e7
+
+; VI-DAG: s_mov_b32 [[MASKK:s[0-9]+]], 0xffff{{$}}
+; VI-DAG: v_lshlrev_b32_e32 [[SCALED_IDX:v[0-9]+]], 16, [[IDX]]
+; VI: v_lshlrev_b32_e64 [[MASK:v[0-9]+]], [[SCALED_IDX]], [[MASKK]]
+
+; CI: v_lshlrev_b32_e32 [[SCALED_IDX:v[0-9]+]], 16, [[IDX]]
+; CI: v_lshl_b32_e32 [[MASK:v[0-9]+]], 0xffff, [[SCALED_IDX]]
+
+; GCN: v_bfi_b32 [[RESULT:v[0-9]+]], [[MASK]], [[K]], [[VEC]]
+; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, [[RESULT]]
+define void @v_insertelement_v2i16_dynamic_vgpr(<2 x i16> addrspace(1)* %out, <2 x i16> addrspace(1)* %in, i32 addrspace(1)* %idx.ptr) #0 {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x() #1
+  %tid.ext = sext i32 %tid to i64
+  %in.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %in, i64 %tid.ext
+  %idx.gep = getelementptr inbounds i32, i32 addrspace(1)* %idx.ptr, i64 %tid.ext
+  %out.gep = getelementptr inbounds <2 x i16>, <2 x i16> addrspace(1)* %out, i64 %tid.ext
+  %idx = load i32, i32 addrspace(1)* %idx.gep
+  %vec = load <2 x i16>, <2 x i16> addrspace(1)* %in.gep
+  %vecins = insertelement <2 x i16> %vec, i16 999, i32 %idx
+  store <2 x i16> %vecins, <2 x i16> addrspace(1)* %out.gep
+  ret void
+}
+
+; GCN-LABEL: {{^}}v_insertelement_v2f16_dynamic_vgpr:
+; GCN: flat_load_dword [[IDX:v[0-9]+]]
+; GCN: flat_load_dword [[VEC:v[0-9]+]]
+; GCN-DAG: v_mov_b32_e32 [[K:v[0-9]+]], 0x1234
+
+; VI-DAG: s_mov_b32 [[MASKK:s[0-9]+]], 0xffff{{$}}
+; VI-DAG: v_lshlrev_b32_e32 [[SCALED_IDX:v[0-9]+]], 16, [[IDX]]
+; VI: v_lshlrev_b32_e64 [[MASK:v[0-9]+]], [[SCALED_IDX]], [[MASKK]]
+
+; CI: v_lshlrev_b32_e32 [[SCALED_IDX:v[0-9]+]], 16, [[IDX]]
+; CI: v_lshl_b32_e32 [[MASK:v[0-9]+]], 0xffff, [[SCALED_IDX]]
+
+; GCN: v_bfi_b32 [[RESULT:v[0-9]+]], [[MASK]], [[K]], [[VEC]]
+; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, [[RESULT]]
+define void @v_insertelement_v2f16_dynamic_vgpr(<2 x half> addrspace(1)* %out, <2 x half> addrspace(1)* %in, i32 addrspace(1)* %idx.ptr) #0 {
+  %tid = call i32 @llvm.amdgcn.workitem.id.x() #1
+  %tid.ext = sext i32 %tid to i64
+  %in.gep = getelementptr inbounds <2 x half>, <2 x half> addrspace(1)* %in, i64 %tid.ext
+  %idx.gep = getelementptr inbounds i32, i32 addrspace(1)* %idx.ptr, i64 %tid.ext
+  %out.gep = getelementptr inbounds <2 x half>, <2 x half> addrspace(1)* %out, i64 %tid.ext
+  %idx = load i32, i32 addrspace(1)* %idx.gep
+  %vec = load <2 x half>, <2 x half> addrspace(1)* %in.gep
+  %vecins = insertelement <2 x half> %vec, half 0xH1234, i32 %idx
+  store <2 x half> %vecins, <2 x half> addrspace(1)* %out.gep
+  ret void
+}
+
+declare i32 @llvm.amdgcn.workitem.id.x() #1
+
+attributes #0 = { nounwind }
+attributes #1 = { nounwind readnone }