diff --git a/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp b/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp
index a7a43d3..eae2a54 100644
--- a/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp
+++ b/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp
@@ -1681,6 +1681,7 @@
         case MVT::v4i16: Opc = ARM::VST4d16; break;
         case MVT::v2f32:
         case MVT::v2i32: Opc = ARM::VST4d32; break;
+        case MVT::v1i64: Opc = ARM::VST4d64; break;
         }
         SDValue Chain = N->getOperand(0);
         const SDValue Ops[] = { MemAddr, MemUpdate, MemOpc,
diff --git a/llvm/lib/Target/ARM/ARMInstrNEON.td b/llvm/lib/Target/ARM/ARMInstrNEON.td
index 40832e5..d2231bf 100644
--- a/llvm/lib/Target/ARM/ARMInstrNEON.td
+++ b/llvm/lib/Target/ARM/ARMInstrNEON.td
@@ -406,6 +406,10 @@
 def  VST4d8   : VST4D<0b0000, "vst4.8">;
 def  VST4d16  : VST4D<0b0100, "vst4.16">;
 def  VST4d32  : VST4D<0b1000, "vst4.32">;
+def  VST4d64  : NLdSt<0,0b00,0b0010,0b1100, (outs),
+                      (ins addrmode6:$addr, DPR:$src1, DPR:$src2, DPR:$src3,
+                       DPR:$src4), IIC_VST,
+                      "vst1.64\t\\{$src1,$src2,$src3,$src4\\}, $addr", "", []>;
 
 // vst4 to double-spaced even registers.
 def  VST4q8a  : VST4WB<0b0000, "vst4.8">;
diff --git a/llvm/lib/Target/ARM/NEONPreAllocPass.cpp b/llvm/lib/Target/ARM/NEONPreAllocPass.cpp
index 773ca7e..19ff0b3 100644
--- a/llvm/lib/Target/ARM/NEONPreAllocPass.cpp
+++ b/llvm/lib/Target/ARM/NEONPreAllocPass.cpp
@@ -172,6 +172,7 @@
   case ARM::VST4d8:
   case ARM::VST4d16:
   case ARM::VST4d32:
+  case ARM::VST4d64:
   case ARM::VST4LNd8:
   case ARM::VST4LNd16:
   case ARM::VST4LNd32: