fix assert in arm64 gap resolver

src/arm64/delayed-masm-arm64.cc

 // Copyright 2013 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/v8.h"
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/arm64/delayed-masm-arm64.h"
 #include "src/arm64/lithium-codegen-arm64.h"
 
 namespace v8 {
 namespace internal {
 
 #define __ ACCESS_MASM(masm_)
 
 
 void DelayedMasm::StackSlotMove(LOperand* src, LOperand* dst) {
-  DCHECK(src->IsStackSlot());
-  DCHECK(dst->IsStackSlot());
+  DCHECK((src->IsStackSlot() && dst->IsStackSlot()) ||
+         (src->IsDoubleStackSlot() && dst->IsDoubleStackSlot()));
   MemOperand src_operand = cgen_->ToMemOperand(src);
   MemOperand dst_operand = cgen_->ToMemOperand(dst);
   if (pending_ == kStackSlotMove) {
     DCHECK(pending_pc_ == masm_->pc_offset());
     UseScratchRegisterScope scope(masm_);
     DoubleRegister temp1 = scope.AcquireD();
     DoubleRegister temp2 = scope.AcquireD();
     switch (MemOperand::AreConsistentForPair(pending_address_src_,
                                              src_operand)) {
       case MemOperand::kNotPair:
@@ skipping 158 matching lines @@
       __ Str(temp, pending_address_dst_);
       break;
     }
   }
   ResetPending();
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64