[turbofan] ARM: Implement vswp and use in gap resolver

src/arm/macro-assembler-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 <limits.h>  // For LONG_MIN, LONG_MAX.
 
 #if V8_TARGET_ARCH_ARM
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
@@ skipping 1036 matching lines @@
 
 
 void MacroAssembler::VmovLow(DwVfpRegister dst, Register src) {
   if (dst.code() < 16) {
     const LowDwVfpRegister loc = LowDwVfpRegister::from_code(dst.code());
     vmov(loc.low(), src);
   } else {
     vmov(dst, VmovIndexLo, src);
   }
 }
+
 void MacroAssembler::LslPair(Register dst_low, Register dst_high,
                              Register src_low, Register src_high,
                              Register scratch, Register shift) {
   DCHECK(!AreAliased(dst_high, src_low));
   DCHECK(!AreAliased(dst_high, shift));
 
   Label less_than_32;
   Label done;
   rsb(scratch, shift, Operand(32), SetCC);
   b(gt, &less_than_32);
@@ skipping 3099 matching lines @@
     }
   }
   if (mag.shift > 0) mov(result, Operand(result, ASR, mag.shift));
   add(result, result, Operand(dividend, LSR, 31));
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM