Merge 6800:7180 from the bleeding edge branch to the experimental/gc branch.

src/ia32/assembler-ia32.h

Index: src/ia32/assembler-ia32.h
===================================================================
--- src/ia32/assembler-ia32.h	(revision 7180)
+++ src/ia32/assembler-ia32.h	(working copy)
@@ -185,13 +185,6 @@
 typedef XMMRegister DoubleRegister;
 
 
-// Index of register used in pusha/popa.
-// Order of pushed registers: EAX, ECX, EDX, EBX, ESP, EBP, ESI, and EDI
-inline int EspIndexForPushAll(Register reg) {
-  return Register::kNumRegisters - 1 - reg.code();
-}
-
-
 enum Condition {
   // any value < 0 is considered no_condition
   no_condition  = -1,
@@ -531,6 +524,9 @@
   Assembler(void* buffer, int buffer_size);
   ~Assembler();
 
+  // Overrides the default provided by FLAG_debug_code.
+  void set_emit_debug_code(bool value) { emit_debug_code_ = value; }
+
   // GetCode emits any pending (non-emitted) code and fills the descriptor
   // desc. GetCode() is idempotent; it returns the same result if no other
   // Assembler functions are invoked in between GetCode() calls.
@@ -982,11 +978,17 @@
 
   PositionsRecorder* positions_recorder() { return &positions_recorder_; }
 
+  int relocation_writer_size() {
+    return (buffer_ + buffer_size_) - reloc_info_writer.pos();
+  }
+
   // Avoid overflows for displacements etc.
   static const int kMaximalBufferSize = 512*MB;
   static const int kMinimalBufferSize = 4*KB;
 
  protected:
+  bool emit_debug_code() const { return emit_debug_code_; }
+
   void movsd(XMMRegister dst, const Operand& src);
   void movsd(const Operand& dst, XMMRegister src);
 
@@ -1062,6 +1064,8 @@
 
   PositionsRecorder positions_recorder_;
 
+  bool emit_debug_code_;
+
   friend class PositionsRecorder;
 };