[Turbofan] Add ARM support for simd128 moves and swaps.

src/arm/simulator-arm.cc

Index: src/arm/simulator-arm.cc
diff --git a/src/arm/simulator-arm.cc b/src/arm/simulator-arm.cc
index 331a7e9dfdddd86868455eb23e698def31817356..6a8323e4920d8eadd6fe488e4831db4a45c868e0 100644
--- a/src/arm/simulator-arm.cc
+++ b/src/arm/simulator-arm.cc
@@ -3743,6 +3743,19 @@ void Simulator::DecodeType6CoprocessorIns(Instruction* instr) {
 
 void Simulator::DecodeSpecialCondition(Instruction* instr) {
   switch (instr->SpecialValue()) {
+    case 4:
+      if (instr->Bits(27, 23) == 4 && instr->Bits(21, 20) == 2 &&
+          instr->Bits(11, 8) == 1 && instr->Bit(4) == 1) {
+        // vmov Qd, Qm
+        int Vd = instr->VFPDRegValue(kSimd128Precision);
+        int Vm = instr->VFPMRegValue(kSimd128Precision);
+        uint32_t data[4];
+        get_q_register(Vm, data);
+        set_q_register(Vd, data);
+      } else {
+        UNIMPLEMENTED();
+      }
+      break;
     case 5:
       if ((instr->Bits(18, 16) == 0) && (instr->Bits(11, 6) == 0x28) &&
           (instr->Bit(4) == 1)) {
@@ -3789,18 +3802,24 @@ void Simulator::DecodeSpecialCondition(Instruction* instr) {
         set_q_register(Vd, reinterpret_cast<uint64_t*>(to));
       } else if ((instr->Bits(21, 16) == 0x32) && (instr->Bits(11, 7) == 0) &&
                  (instr->Bit(4) == 0)) {
-        int vd = instr->VFPDRegValue(kDoublePrecision);
-        int vm = instr->VFPMRegValue(kDoublePrecision);
         if (instr->Bit(6) == 0) {
           // vswp Dd, Dm.
           uint64_t dval, mval;
+          int vd = instr->VFPDRegValue(kDoublePrecision);
+          int vm = instr->VFPMRegValue(kDoublePrecision);
           get_d_register(vd, &dval);
           get_d_register(vm, &mval);
           set_d_register(vm, &dval);
           set_d_register(vd, &mval);
         } else {
-          // Q register vswp unimplemented.
-          UNIMPLEMENTED();
+          // vswp Qd, Qm.
+          uint32_t dval[4], mval[4];
+          int vd = instr->VFPDRegValue(kSimd128Precision);
+          int vm = instr->VFPMRegValue(kSimd128Precision);
+          get_q_register(vd, dval);
+          get_q_register(vm, mval);
+          set_q_register(vm, dval);
+          set_q_register(vd, mval);
         }
       } else {
         UNIMPLEMENTED();