Refactored the recording of source position in the generated code. The code g...

src/assembler-ia32.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 689 matching lines @@
   // Writes a single word of data in the code stream.
   // Used for inline tables, e.g., jump-tables.
   void dd(uint32_t data, RelocInfo::Mode reloc_info);
 
   // Writes the absolute address of a bound label at the given position in
   // the generated code. That positions should have the relocation mode
   // internal_reference!
   void WriteInternalReference(int position, const Label& bound_label);
 
   int pc_offset() const  { return pc_ - buffer_; }
-  int last_statement_position() const  { return last_statement_position_; }
-  int last_position() const  { return last_position_; }
+  int current_statement_position() const { return current_statement_position_; }
+  int current_position() const  { return current_position_; }
 
   // 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.
   inline bool overflow() const { return pc_ >= reloc_info_writer.pos() - kGap; }
 
   // Get the number of bytes available in the buffer.
   inline int available_space() const { return reloc_info_writer.pos() - pc_; }
 
   // Avoid overflows for displacements etc.
@@ skipping 17 matching lines @@
   bool own_buffer_;
 
   // code generation
   byte* pc_;  // the program counter; moves forward
   RelocInfoWriter reloc_info_writer;
 
   // push-pop elimination
   byte* last_pc_;
 
   // source position information
-  int last_position_;
-  int last_statement_position_;
+  int current_statement_position_;
+  int current_position_;
+  int written_statement_position_;
+  int written_position_;
 
   byte* addr_at(int pos)  { return buffer_ + pos; }
   byte byte_at(int pos)  { return buffer_[pos]; }
   uint32_t long_at(int pos)  {
     return *reinterpret_cast<uint32_t*>(addr_at(pos));
   }
   void long_at_put(int pos, uint32_t x)  {
     *reinterpret_cast<uint32_t*>(addr_at(pos)) = x;
   }
 
@@ skipping 59 matching lines @@
  private:
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ASSEMBLER_IA32_H_