Moved buffer handling to AssemblerBase.

src/ia32/assembler-ia32.h

Index: src/ia32/assembler-ia32.h
diff --git a/src/ia32/assembler-ia32.h b/src/ia32/assembler-ia32.h
index 9fb7baa478d30f622e9269891e46f1e89a034a21..b8d42b4c0634c49108b11d50d6e21eff8e8dd98a 100644
--- a/src/ia32/assembler-ia32.h
+++ b/src/ia32/assembler-ia32.h
@@ -582,7 +582,7 @@ class Assembler : public AssemblerBase {
   // upon destruction of the assembler.
   // TODO(vitalyr): the assembler does not need an isolate.
   Assembler(Isolate* isolate, void* buffer, int buffer_size);
-  ~Assembler();
+  virtual ~Assembler() { }
 
   // GetCode emits any pending (non-emitted) code and fills the descriptor
   // desc. GetCode() is idempotent; it returns the same result if no other
@@ -1091,8 +1091,6 @@ class Assembler : public AssemblerBase {
   void db(uint8_t data);
   void dd(uint32_t data);
 
-  int pc_offset() const { return pc_ - buffer_; }
-
   // Check if there is less than kGap bytes available in the buffer.
   // If this is the case, we need to grow the buffer before emitting
   // an instruction or relocation information.
@@ -1111,7 +1109,6 @@ class Assembler : public AssemblerBase {
 
   // Avoid overflows for displacements etc.
   static const int kMaximalBufferSize = 512*MB;
-  static const int kMinimalBufferSize = 4*KB;
 
   byte byte_at(int pos)  { return buffer_[pos]; }
   void set_byte_at(int pos, byte value) { buffer_[pos] = value; }
@@ -1177,15 +1174,7 @@ class Assembler : public AssemblerBase {
   friend class CodePatcher;
   friend class EnsureSpace;
 
-  // Code buffer:
-  // The buffer into which code and relocation info are generated.
-  byte* buffer_;
-  int buffer_size_;
-  // True if the assembler owns the buffer, false if buffer is external.
-  bool own_buffer_;
-
   // code generation
-  byte* pc_;  // the program counter; moves forward
   RelocInfoWriter reloc_info_writer;
 
   PositionsRecorder positions_recorder_;