Use stack frame marker constants to mark arguments adaptor frame.

src/ia32/codegen-ia32.cc

Index: src/ia32/codegen-ia32.cc
===================================================================
--- src/ia32/codegen-ia32.cc	(revision 2767)
+++ src/ia32/codegen-ia32.cc	(working copy)
@@ -2139,7 +2139,8 @@
     Label invoke, adapted;
     __ mov(edx, Operand(ebp, StandardFrameConstants::kCallerFPOffset));
     __ mov(ecx, Operand(edx, StandardFrameConstants::kContextOffset));
-    __ cmp(ecx, ArgumentsAdaptorFrame::SENTINEL);
+    __ cmp(Operand(ecx),
+           Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
     __ j(equal, &adapted);
 
     // No arguments adaptor frame. Copy fixed number of arguments.
@@ -4912,7 +4913,7 @@
   // Skip the arguments adaptor frame if it exists.
   Label check_frame_marker;
   __ cmp(Operand(fp.reg(), StandardFrameConstants::kContextOffset),
-         Immediate(ArgumentsAdaptorFrame::SENTINEL));
+         Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
   __ j(not_equal, &check_frame_marker);
   __ mov(fp.reg(), Operand(fp.reg(), StandardFrameConstants::kCallerFPOffset));
 
@@ -7109,7 +7110,7 @@
   Label adaptor;
   __ mov(edx, Operand(ebp, StandardFrameConstants::kCallerFPOffset));
   __ mov(ecx, Operand(edx, StandardFrameConstants::kContextOffset));
-  __ cmp(ecx, ArgumentsAdaptorFrame::SENTINEL);
+  __ cmp(Operand(ecx), Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
   __ j(equal, &adaptor);
 
   // Nothing to do: The formal number of parameters has already been
@@ -7141,7 +7142,7 @@
   Label adaptor;
   __ mov(ebx, Operand(ebp, StandardFrameConstants::kCallerFPOffset));
   __ mov(ecx, Operand(ebx, StandardFrameConstants::kContextOffset));
-  __ cmp(ecx, ArgumentsAdaptorFrame::SENTINEL);
+  __ cmp(Operand(ecx), Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
   __ j(equal, &adaptor);
 
   // Check index against formal parameters count limit passed in
@@ -7192,7 +7193,7 @@
   Label runtime;
   __ mov(edx, Operand(ebp, StandardFrameConstants::kCallerFPOffset));
   __ mov(ecx, Operand(edx, StandardFrameConstants::kContextOffset));
-  __ cmp(ecx, ArgumentsAdaptorFrame::SENTINEL);
+  __ cmp(Operand(ecx), Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
   __ j(not_equal, &runtime);
 
   // Patch the arguments.length and the parameters pointer.
@@ -7724,11 +7725,11 @@
   __ push(ebp);
   __ mov(ebp, Operand(esp));
 
+  // Push marker in two places.
+  int marker = is_construct ? StackFrame::ENTRY_CONSTRUCT : StackFrame::ENTRY;
+  __ push(Immediate(Smi::FromInt(marker)));  // context slot
+  __ push(Immediate(Smi::FromInt(marker)));  // function slot
   // Save callee-saved registers (C calling conventions).
-  int marker = is_construct ? StackFrame::ENTRY_CONSTRUCT : StackFrame::ENTRY;
-  // Push something that is not an arguments adaptor.
-  __ push(Immediate(~ArgumentsAdaptorFrame::SENTINEL));
-  __ push(Immediate(Smi::FromInt(marker)));  // @ function offset
   __ push(edi);
   __ push(esi);
   __ push(ebx);