[arm] Fix a double-register push operation.

src/arm/lithium-gap-resolver-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/arm/lithium-codegen-arm.h"
 #include "src/arm/lithium-gap-resolver-arm.h"
 
 namespace v8 {
 namespace internal {
 
@@ skipping 260 matching lines @@
 
   } else if (source->IsDoubleStackSlot()) {
     MemOperand source_operand = cgen_->ToMemOperand(source);
     if (destination->IsDoubleRegister()) {
       __ vldr(cgen_->ToDoubleRegister(destination), source_operand);
     } else {
       DCHECK(destination->IsDoubleStackSlot());
       MemOperand destination_operand = cgen_->ToMemOperand(destination);
       if (in_cycle_) {
         // kScratchDoubleReg was used to break the cycle.
-        __ vstm(db_w, sp, kScratchDoubleReg, kScratchDoubleReg);
+        __ vpush(kScratchDoubleReg);
         __ vldr(kScratchDoubleReg, source_operand);
         __ vstr(kScratchDoubleReg, destination_operand);
-        __ vldm(ia_w, sp, kScratchDoubleReg, kScratchDoubleReg);
+        __ vpop(kScratchDoubleReg);
       } else {
         __ vldr(kScratchDoubleReg, source_operand);
         __ vstr(kScratchDoubleReg, destination_operand);
       }
     }
   } else {
     UNREACHABLE();
   }
 
   moves_[index].Eliminate();
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8