ARM64: Fix EnsureSpace to not emit pools.

src/arm64/assembler-arm64.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2022 matching lines @@
     ASSERT((pc_ + size) <= (buffer_ + buffer_size_));
 
     // TODO(all): Somehow register we have some data here. Then we can
     // disassemble it correctly.
     memcpy(pc_, data, size);
     pc_ += size;
     CheckBuffer();
   }
 
   void GrowBuffer();
+  void CheckBufferSpace();
   void CheckBuffer();
 
   // Pc offset of the next constant pool check.
   int next_constant_pool_check_;
 
   // Constant pool generation
   // Pools are emitted in the instruction stream, preferably after unconditional
   // jumps or after returns from functions (in dead code locations).
   // If a long code sequence does not contain unconditional jumps, it is
   // necessary to emit the constant pool before the pool gets too far from the
@@ skipping 178 matching lines @@
   // See definition of PatchAdrFar() for details.
   static const int kAdrFarPatchableNNops = kMovInt64NInstrs - 1;
   static const int kAdrFarPatchableNInstrs = kAdrFarPatchableNNops + 3;
   void PatchAdrFar(Instruction* target);
 };
 
 
 class EnsureSpace BASE_EMBEDDED {
  public:
   explicit EnsureSpace(Assembler* assembler) {
-    assembler->CheckBuffer();
+    assembler->CheckBufferSpace();
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM64_ASSEMBLER_ARM64_H_