Reimplement the padding of relocation information for lazy deoptimization on ia32.

src/assembler.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 187 matching lines @@
   static const char* kFillerCommentString;
 
   // The minimum size of a comment is equal to three bytes for the extra tagged
   // pc + the tag for the data, and kPointerSize for the actual pointer to the
   // comment.
   static const int kMinRelocCommentSize = 3 + kPointerSize;
 
   // The maximum size for a call instruction including pc-jump.
   static const int kMaxCallSize = 6;
 
+  // The maximum pc delta that will use the short encoding.
+  static const int kMaxSmallPCDelta;
+
   enum Mode {
     // Please note the order is important (see IsCodeTarget, IsGCRelocMode).
     CONSTRUCT_CALL,  // code target that is a call to a JavaScript constructor.
     CODE_TARGET_CONTEXT,  // Code target used for contextual loads and stores.
     DEBUG_BREAK,  // Code target for the debugger statement.
     CODE_TARGET,  // Code target which is not any of the above.
     EMBEDDED_OBJECT,
     GLOBAL_PROPERTY_CELL,
 
     // Everything after runtime_entry (inclusive) is not GC'ed.
@@ skipping 593 matching lines @@
   return num_bits_set;
 }
 
 // Computes pow(x, y) with the special cases in the spec for Math.pow.
 double power_double_int(double x, int y);
 double power_double_double(double x, double y);
 
 } }  // namespace v8::internal
 
 #endif  // V8_ASSEMBLER_H_