Enable preaging of code objects when --optimize-for-size.

src/ia32/macro-assembler-ia32.h

Index: src/ia32/macro-assembler-ia32.h
diff --git a/src/ia32/macro-assembler-ia32.h b/src/ia32/macro-assembler-ia32.h
index 33af5358b79835da1a04130e29d1f8fc1ea42d1e..eeb3891d70ccc7262adf70dd56e0408860a23a2b 100644
--- a/src/ia32/macro-assembler-ia32.h
+++ b/src/ia32/macro-assembler-ia32.h
@@ -225,6 +225,9 @@ class MacroAssembler: public Assembler {
   void DebugBreak();
 #endif
 
+  // Generates function and stub prologue code.
+  void Prologue(bool is_stub);

[danno, 2013/10/22 12:32:12]

Here and other platforms: Can you please use an enum, e.g. 

enum PrologueFrameMode {
  BUILD_STUB_FRAME,
  BUILD_OPTIMIZED_FRAME
}

or something to that effect.

+
   // Enter specific kind of exit frame. Expects the number of
   // arguments in register eax and sets up the number of arguments in
   // register edi and the pointer to the first argument in register