Merge revision 7664 (revert of 7644 and 7632) to trunk.

This causes interactive tests to hit assertion in debug mode.
Review URL: http://codereview.chromium.org/6880036

git-svn-id: http://v8.googlecode.com/svn/trunk@7668 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/arm/assembler-arm.cc b/src/arm/assembler-arm.cc
index fa97a3b..fd8e8b5 100644
--- a/src/arm/assembler-arm.cc
+++ b/src/arm/assembler-arm.cc
@@ -315,7 +315,6 @@
   no_const_pool_before_ = 0;
   last_const_pool_end_ = 0;
   last_bound_pos_ = 0;
-  ast_id_for_reloc_info_ = kNoASTId;
 }
 
 
@@ -2723,14 +2722,7 @@
       }
     }
     ASSERT(buffer_space() >= kMaxRelocSize);  // too late to grow buffer here
-    if (rmode == RelocInfo::CODE_TARGET_WITH_ID) {
-      ASSERT(ast_id_for_reloc_info_ != kNoASTId);
-      RelocInfo reloc_info_with_ast_id(pc_, rmode, ast_id_for_reloc_info_);
-      ast_id_for_reloc_info_ = kNoASTId;
-      reloc_info_writer.Write(&reloc_info_with_ast_id);
-    } else {
-      reloc_info_writer.Write(&rinfo);
-    }
+    reloc_info_writer.Write(&rinfo);
   }
 }
 
diff --git a/src/arm/assembler-arm.h b/src/arm/assembler-arm.h
index 10fc749..9050c2c 100644
--- a/src/arm/assembler-arm.h
+++ b/src/arm/assembler-arm.h
@@ -1166,10 +1166,6 @@
   // Mark address of a debug break slot.
   void RecordDebugBreakSlot();
 
-  // Record the AST id of the CallIC being compiled, so that it can be placed
-  // in the relocation information.
-  void RecordAstId(unsigned ast_id) { ast_id_for_reloc_info_ = ast_id; }
-
   // Record a comment relocation entry that can be used by a disassembler.
   // Use --code-comments to enable.
   void RecordComment(const char* msg);
@@ -1227,11 +1223,6 @@
   void CheckConstPool(bool force_emit, bool require_jump);
 
  protected:
-  // Relocation for a type-recording IC has the AST id added to it.  This
-  // member variable is a way to pass the information from the call site to
-  // the relocation info.
-  unsigned ast_id_for_reloc_info_;
-
   bool emit_debug_code() const { return emit_debug_code_; }
 
   int buffer_space() const { return reloc_info_writer.pos() - pc_; }
diff --git a/src/arm/full-codegen-arm.cc b/src/arm/full-codegen-arm.cc
index c8ab8bc..85e4262 100644
--- a/src/arm/full-codegen-arm.cc
+++ b/src/arm/full-codegen-arm.cc
@@ -783,7 +783,7 @@
       Handle<Code> ic = is_strict_mode()
           ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
           : isolate()->builtins()->KeyedStoreIC_Initialize();
-      EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+      EmitCallIC(ic, RelocInfo::CODE_TARGET);
       // Value in r0 is ignored (declarations are statements).
     }
   }
@@ -857,7 +857,7 @@
     // Record position before stub call for type feedback.
     SetSourcePosition(clause->position());
     Handle<Code> ic = CompareIC::GetUninitialized(Token::EQ_STRICT);
-    EmitCallIC(ic, &patch_site, clause->label()->id());
+    EmitCallIC(ic, &patch_site);
     __ cmp(r0, Operand(0));
     __ b(ne, &next_test);
     __ Drop(1);  // Switch value is no longer needed.
@@ -1109,67 +1109,6 @@
 }
 
 
-void FullCodeGenerator::EmitLoadGlobalSlotCheckExtensions(
-    Slot* slot,
-    TypeofState typeof_state,
-    Label* slow) {
-  Register current = cp;
-  Register next = r1;
-  Register temp = r2;
-
-  Scope* s = scope();
-  while (s != NULL) {
-    if (s->num_heap_slots() > 0) {
-      if (s->calls_eval()) {
-        // Check that extension is NULL.
-        __ ldr(temp, ContextOperand(current, Context::EXTENSION_INDEX));
-        __ tst(temp, temp);
-        __ b(ne, slow);
-      }
-      // Load next context in chain.
-      __ ldr(next, ContextOperand(current, Context::CLOSURE_INDEX));
-      __ ldr(next, FieldMemOperand(next, JSFunction::kContextOffset));
-      // Walk the rest of the chain without clobbering cp.
-      current = next;
-    }
-    // If no outer scope calls eval, we do not need to check more
-    // context extensions.
-    if (!s->outer_scope_calls_eval() || s->is_eval_scope()) break;
-    s = s->outer_scope();
-  }
-
-  if (s->is_eval_scope()) {
-    Label loop, fast;
-    if (!current.is(next)) {
-      __ Move(next, current);
-    }
-    __ bind(&loop);
-    // Terminate at global context.
-    __ ldr(temp, FieldMemOperand(next, HeapObject::kMapOffset));
-    __ LoadRoot(ip, Heap::kGlobalContextMapRootIndex);
-    __ cmp(temp, ip);
-    __ b(eq, &fast);
-    // Check that extension is NULL.
-    __ ldr(temp, ContextOperand(next, Context::EXTENSION_INDEX));
-    __ tst(temp, temp);
-    __ b(ne, slow);
-    // Load next context in chain.
-    __ ldr(next, ContextOperand(next, Context::CLOSURE_INDEX));
-    __ ldr(next, FieldMemOperand(next, JSFunction::kContextOffset));
-    __ b(&loop);
-    __ bind(&fast);
-  }
-
-  __ ldr(r0, GlobalObjectOperand());
-  __ mov(r2, Operand(slot->var()->name()));
-  RelocInfo::Mode mode = (typeof_state == INSIDE_TYPEOF)
-      ? RelocInfo::CODE_TARGET
-      : RelocInfo::CODE_TARGET_CONTEXT;
-  Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize();
-  EmitCallIC(ic, mode, AstNode::kNoNumber);
-}
-
-
 MemOperand FullCodeGenerator::ContextSlotOperandCheckExtensions(
     Slot* slot,
     Label* slow) {
@@ -1248,7 +1187,7 @@
           __ mov(r0, Operand(key_literal->handle()));
           Handle<Code> ic =
               isolate()->builtins()->KeyedLoadIC_Initialize();
-          EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+          EmitCallIC(ic, RelocInfo::CODE_TARGET);
           __ jmp(done);
         }
       }
@@ -1257,6 +1196,67 @@
 }
 
 
+void FullCodeGenerator::EmitLoadGlobalSlotCheckExtensions(
+    Slot* slot,
+    TypeofState typeof_state,
+    Label* slow) {
+  Register current = cp;
+  Register next = r1;
+  Register temp = r2;
+
+  Scope* s = scope();
+  while (s != NULL) {
+    if (s->num_heap_slots() > 0) {
+      if (s->calls_eval()) {
+        // Check that extension is NULL.
+        __ ldr(temp, ContextOperand(current, Context::EXTENSION_INDEX));
+        __ tst(temp, temp);
+        __ b(ne, slow);
+      }
+      // Load next context in chain.
+      __ ldr(next, ContextOperand(current, Context::CLOSURE_INDEX));
+      __ ldr(next, FieldMemOperand(next, JSFunction::kContextOffset));
+      // Walk the rest of the chain without clobbering cp.
+      current = next;
+    }
+    // If no outer scope calls eval, we do not need to check more
+    // context extensions.
+    if (!s->outer_scope_calls_eval() || s->is_eval_scope()) break;
+    s = s->outer_scope();
+  }
+
+  if (s->is_eval_scope()) {
+    Label loop, fast;
+    if (!current.is(next)) {
+      __ Move(next, current);
+    }
+    __ bind(&loop);
+    // Terminate at global context.
+    __ ldr(temp, FieldMemOperand(next, HeapObject::kMapOffset));
+    __ LoadRoot(ip, Heap::kGlobalContextMapRootIndex);
+    __ cmp(temp, ip);
+    __ b(eq, &fast);
+    // Check that extension is NULL.
+    __ ldr(temp, ContextOperand(next, Context::EXTENSION_INDEX));
+    __ tst(temp, temp);
+    __ b(ne, slow);
+    // Load next context in chain.
+    __ ldr(next, ContextOperand(next, Context::CLOSURE_INDEX));
+    __ ldr(next, FieldMemOperand(next, JSFunction::kContextOffset));
+    __ b(&loop);
+    __ bind(&fast);
+  }
+
+  __ ldr(r0, GlobalObjectOperand());
+  __ mov(r2, Operand(slot->var()->name()));
+  RelocInfo::Mode mode = (typeof_state == INSIDE_TYPEOF)
+      ? RelocInfo::CODE_TARGET
+      : RelocInfo::CODE_TARGET_CONTEXT;
+  Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize();
+  EmitCallIC(ic, mode);
+}
+
+
 void FullCodeGenerator::EmitVariableLoad(Variable* var) {
   // Four cases: non-this global variables, lookup slots, all other
   // types of slots, and parameters that rewrite to explicit property
@@ -1271,7 +1271,7 @@
     __ ldr(r0, GlobalObjectOperand());
     __ mov(r2, Operand(var->name()));
     Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize();
-    EmitCallIC(ic, RelocInfo::CODE_TARGET_CONTEXT, AstNode::kNoNumber);
+    EmitCallIC(ic, RelocInfo::CODE_TARGET_CONTEXT);
     context()->Plug(r0);
 
   } else if (slot != NULL && slot->type() == Slot::LOOKUP) {
@@ -1330,7 +1330,7 @@
 
     // Call keyed load IC. It has arguments key and receiver in r0 and r1.
     Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize();
-    EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+    EmitCallIC(ic, RelocInfo::CODE_TARGET);
     context()->Plug(r0);
   }
 }
@@ -1438,10 +1438,8 @@
             VisitForAccumulatorValue(value);
             __ mov(r2, Operand(key->handle()));
             __ ldr(r1, MemOperand(sp));
-            Handle<Code> ic = is_strict_mode()
-                ? isolate()->builtins()->StoreIC_Initialize_Strict()
-                : isolate()->builtins()->StoreIC_Initialize();
-            EmitCallIC(ic, RelocInfo::CODE_TARGET_WITH_ID, key->id());
+            Handle<Code> ic = isolate()->builtins()->StoreIC_Initialize();
+            EmitCallIC(ic, RelocInfo::CODE_TARGET);
             PrepareForBailoutForId(key->id(), NO_REGISTERS);
           } else {
             VisitForEffect(value);
@@ -1653,13 +1651,13 @@
     SetSourcePosition(expr->position() + 1);
     AccumulatorValueContext context(this);
     if (ShouldInlineSmiCase(op)) {
-      EmitInlineSmiBinaryOp(expr->binary_operation(),
+      EmitInlineSmiBinaryOp(expr,
                             op,
                             mode,
                             expr->target(),
                             expr->value());
     } else {
-      EmitBinaryOp(expr->binary_operation(), op, mode);
+      EmitBinaryOp(op, mode);
     }
 
     // Deoptimization point in case the binary operation may have side effects.
@@ -1695,11 +1693,7 @@
   __ mov(r2, Operand(key->handle()));
   // Call load IC. It has arguments receiver and property name r0 and r2.
   Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize();
-  if (prop->is_synthetic()) {
-    EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
-  } else {
-    EmitCallIC(ic, RelocInfo::CODE_TARGET_WITH_ID, prop->id());
-  }
+  EmitCallIC(ic, RelocInfo::CODE_TARGET);
 }
 
 
@@ -1707,15 +1701,11 @@
   SetSourcePosition(prop->position());
   // Call keyed load IC. It has arguments key and receiver in r0 and r1.
   Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize();
-  if (prop->is_synthetic()) {
-    EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
-  } else {
-    EmitCallIC(ic, RelocInfo::CODE_TARGET_WITH_ID, prop->id());
-  }
+  EmitCallIC(ic, RelocInfo::CODE_TARGET);
 }
 
 
-void FullCodeGenerator::EmitInlineSmiBinaryOp(BinaryOperation* expr,
+void FullCodeGenerator::EmitInlineSmiBinaryOp(Expression* expr,
                                               Token::Value op,
                                               OverwriteMode mode,
                                               Expression* left_expr,
@@ -1738,7 +1728,7 @@
 
   __ bind(&stub_call);
   TypeRecordingBinaryOpStub stub(op, mode);
-  EmitCallIC(stub.GetCode(), &patch_site, expr->id());
+  EmitCallIC(stub.GetCode(), &patch_site);
   __ jmp(&done);
 
   __ bind(&smi_case);
@@ -1814,12 +1804,11 @@
 }
 
 
-void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr,
-                                     Token::Value op,
+void FullCodeGenerator::EmitBinaryOp(Token::Value op,
                                      OverwriteMode mode) {
   __ pop(r1);
   TypeRecordingBinaryOpStub stub(op, mode);
-  EmitCallIC(stub.GetCode(), NULL, expr->id());
+  EmitCallIC(stub.GetCode(), NULL);
   context()->Plug(r0);
 }
 
@@ -1859,7 +1848,7 @@
       Handle<Code> ic = is_strict_mode()
           ? isolate()->builtins()->StoreIC_Initialize_Strict()
           : isolate()->builtins()->StoreIC_Initialize();
-      EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+      EmitCallIC(ic, RelocInfo::CODE_TARGET);
       break;
     }
     case KEYED_PROPERTY: {
@@ -1882,7 +1871,7 @@
       Handle<Code> ic = is_strict_mode()
           ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
           : isolate()->builtins()->KeyedStoreIC_Initialize();
-      EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+      EmitCallIC(ic, RelocInfo::CODE_TARGET);
       break;
     }
   }
@@ -1908,7 +1897,7 @@
     Handle<Code> ic = is_strict_mode()
         ? isolate()->builtins()->StoreIC_Initialize_Strict()
         : isolate()->builtins()->StoreIC_Initialize();
-    EmitCallIC(ic, RelocInfo::CODE_TARGET_CONTEXT, AstNode::kNoNumber);
+    EmitCallIC(ic, RelocInfo::CODE_TARGET_CONTEXT);
 
   } else if (op == Token::INIT_CONST) {
     // Like var declarations, const declarations are hoisted to function
@@ -2017,7 +2006,7 @@
   Handle<Code> ic = is_strict_mode()
       ? isolate()->builtins()->StoreIC_Initialize_Strict()
       : isolate()->builtins()->StoreIC_Initialize();
-  EmitCallIC(ic, RelocInfo::CODE_TARGET_WITH_ID, expr->id());
+  EmitCallIC(ic, RelocInfo::CODE_TARGET);
 
   // If the assignment ends an initialization block, revert to fast case.
   if (expr->ends_initialization_block()) {
@@ -2063,7 +2052,7 @@
   Handle<Code> ic = is_strict_mode()
       ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
       : isolate()->builtins()->KeyedStoreIC_Initialize();
-  EmitCallIC(ic, RelocInfo::CODE_TARGET_WITH_ID, expr->id());
+  EmitCallIC(ic, RelocInfo::CODE_TARGET);
 
   // If the assignment ends an initialization block, revert to fast case.
   if (expr->ends_initialization_block()) {
@@ -2115,9 +2104,7 @@
   InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP;
   Handle<Code> ic =
       isolate()->stub_cache()->ComputeCallInitialize(arg_count, in_loop);
-  unsigned ast_id =
-      (mode == RelocInfo::CODE_TARGET_WITH_ID) ? expr->id() : kNoASTId;
-  EmitCallIC(ic, mode, ast_id);
+  EmitCallIC(ic, mode);
   RecordJSReturnSite(expr);
   // Restore context register.
   __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
@@ -2152,7 +2139,7 @@
   Handle<Code> ic =
       isolate()->stub_cache()->ComputeKeyedCallInitialize(arg_count, in_loop);
   __ ldr(r2, MemOperand(sp, (arg_count + 1) * kPointerSize));  // Key.
-  EmitCallIC(ic, mode, expr->id());
+  EmitCallIC(ic, mode);
   RecordJSReturnSite(expr);
   // Restore context register.
   __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
@@ -2328,11 +2315,11 @@
       { PreservePositionScope scope(masm()->positions_recorder());
         VisitForStackValue(prop->obj());
       }
-      EmitCallWithIC(expr, key->handle(), RelocInfo::CODE_TARGET_WITH_ID);
+      EmitCallWithIC(expr, key->handle(), RelocInfo::CODE_TARGET);
     } else {
       // Call to a keyed property.
       // For a synthetic property use keyed load IC followed by function call,
-      // for a regular property use keyed EmitCallIC.
+      // for a regular property use keyed CallIC.
       if (prop->is_synthetic()) {
         // Do not visit the object and key subexpressions (they are shared
         // by all occurrences of the same rewritten parameter).
@@ -2350,7 +2337,7 @@
         SetSourcePosition(prop->position());
 
         Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize();
-        EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+        EmitCallIC(ic, RelocInfo::CODE_TARGET);
         __ ldr(r1, GlobalObjectOperand());
         __ ldr(r1, FieldMemOperand(r1, GlobalObject::kGlobalReceiverOffset));
         __ Push(r0, r1);  // Function, receiver.
@@ -2359,7 +2346,7 @@
         { PreservePositionScope scope(masm()->positions_recorder());
           VisitForStackValue(prop->obj());
         }
-        EmitKeyedCallWithIC(expr, prop->key(), RelocInfo::CODE_TARGET_WITH_ID);
+        EmitKeyedCallWithIC(expr, prop->key(), RelocInfo::CODE_TARGET);
       }
     }
   } else {
@@ -3670,7 +3657,7 @@
     __ mov(r2, Operand(expr->name()));
     Handle<Code> ic =
         isolate()->stub_cache()->ComputeCallInitialize(arg_count, NOT_IN_LOOP);
-    EmitCallIC(ic, RelocInfo::CODE_TARGET_WITH_ID, expr->id());
+    EmitCallIC(ic, RelocInfo::CODE_TARGET);
     // Restore context register.
     __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
   } else {
@@ -3949,7 +3936,7 @@
   SetSourcePosition(expr->position());
 
   TypeRecordingBinaryOpStub stub(Token::ADD, NO_OVERWRITE);
-  EmitCallIC(stub.GetCode(), &patch_site, expr->CountId());
+  EmitCallIC(stub.GetCode(), &patch_site);
   __ bind(&done);
 
   // Store the value returned in r0.
@@ -3980,7 +3967,7 @@
       Handle<Code> ic = is_strict_mode()
           ? isolate()->builtins()->StoreIC_Initialize_Strict()
           : isolate()->builtins()->StoreIC_Initialize();
-      EmitCallIC(ic, RelocInfo::CODE_TARGET_WITH_ID, expr->id());
+      EmitCallIC(ic, RelocInfo::CODE_TARGET);
       PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
@@ -3997,7 +3984,7 @@
       Handle<Code> ic = is_strict_mode()
           ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
           : isolate()->builtins()->KeyedStoreIC_Initialize();
-      EmitCallIC(ic, RelocInfo::CODE_TARGET_WITH_ID, expr->id());
+      EmitCallIC(ic, RelocInfo::CODE_TARGET);
       PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
@@ -4023,7 +4010,7 @@
     Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize();
     // Use a regular load, not a contextual load, to avoid a reference
     // error.
-    EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+    EmitCallIC(ic, RelocInfo::CODE_TARGET);
     PrepareForBailout(expr, TOS_REG);
     context()->Plug(r0);
   } else if (proxy != NULL &&
@@ -4226,7 +4213,7 @@
       // Record position and call the compare IC.
       SetSourcePosition(expr->position());
       Handle<Code> ic = CompareIC::GetUninitialized(op);
-      EmitCallIC(ic, &patch_site, expr->id());
+      EmitCallIC(ic, &patch_site);
       PrepareForBailoutBeforeSplit(TOS_REG, true, if_true, if_false);
       __ cmp(r0, Operand(0));
       Split(cond, if_true, if_false, fall_through);
@@ -4288,12 +4275,9 @@
 }
 
 
-void FullCodeGenerator::EmitCallIC(Handle<Code> ic,
-                                   RelocInfo::Mode mode,
-                                   unsigned ast_id) {
+void FullCodeGenerator::EmitCallIC(Handle<Code> ic, RelocInfo::Mode mode) {
   ASSERT(mode == RelocInfo::CODE_TARGET ||
-         mode == RelocInfo::CODE_TARGET_CONTEXT ||
-         mode == RelocInfo::CODE_TARGET_WITH_ID);
+         mode == RelocInfo::CODE_TARGET_CONTEXT);
   Counters* counters = isolate()->counters();
   switch (ic->kind()) {
     case Code::LOAD_IC:
@@ -4310,19 +4294,11 @@
     default:
       break;
   }
-  if (mode == RelocInfo::CODE_TARGET_WITH_ID) {
-    ASSERT(ast_id != kNoASTId);
-    __ CallWithAstId(ic, mode, ast_id);
-  } else {
-    ASSERT(ast_id == kNoASTId);
-    __ Call(ic, mode);
-  }
+  __ Call(ic, mode);
 }
 
 
-void FullCodeGenerator::EmitCallIC(Handle<Code> ic,
-                                   JumpPatchSite* patch_site,
-                                   unsigned ast_id) {
+void FullCodeGenerator::EmitCallIC(Handle<Code> ic, JumpPatchSite* patch_site) {
   Counters* counters = isolate()->counters();
   switch (ic->kind()) {
     case Code::LOAD_IC:
@@ -4339,12 +4315,7 @@
     default:
       break;
   }
-
-  if (ast_id != kNoASTId) {
-    __ CallWithAstId(ic, RelocInfo::CODE_TARGET_WITH_ID, ast_id);
-  } else {
-    __ Call(ic, RelocInfo::CODE_TARGET);
-  }
+  __ Call(ic, RelocInfo::CODE_TARGET);
   if (patch_site != NULL && patch_site->is_bound()) {
     patch_site->EmitPatchInfo();
   } else {
diff --git a/src/arm/macro-assembler-arm.cc b/src/arm/macro-assembler-arm.cc
index c800ffc..6a095d3 100644
--- a/src/arm/macro-assembler-arm.cc
+++ b/src/arm/macro-assembler-arm.cc
@@ -148,9 +148,8 @@
 }
 
 
-void MacroAssembler::Call(intptr_t target,
-                          RelocInfo::Mode rmode,
-                          Condition cond) {
+void MacroAssembler::Call(
+    intptr_t target, RelocInfo::Mode rmode, Condition cond) {
   // Block constant pool for the call instruction sequence.
   BlockConstPoolScope block_const_pool(this);
 #ifdef DEBUG
@@ -215,31 +214,8 @@
 }
 
 
-void MacroAssembler::CallWithAstId(Handle<Code> code,
-                                   RelocInfo::Mode rmode,
-                                   unsigned ast_id,
-                                   Condition cond) {
-#ifdef DEBUG
-  int pre_position = pc_offset();
-#endif
-
-  ASSERT(rmode == RelocInfo::CODE_TARGET_WITH_ID);
-  ASSERT(ast_id != kNoASTId);
-  ASSERT(ast_id_for_reloc_info_ == kNoASTId);
-  ast_id_for_reloc_info_ = ast_id;
-  // 'code' is always generated ARM code, never THUMB code
-  Call(reinterpret_cast<intptr_t>(code.location()), rmode, cond);
-
-#ifdef DEBUG
-  int post_position = pc_offset();
-  CHECK_EQ(pre_position + CallSize(code, rmode, cond), post_position);
-#endif
-}
-
-
-void MacroAssembler::Call(Handle<Code> code,
-                          RelocInfo::Mode rmode,
-                          Condition cond) {
+void MacroAssembler::Call(
+    Handle<Code> code, RelocInfo::Mode rmode, Condition cond) {
 #ifdef DEBUG
   int pre_position = pc_offset();
 #endif
diff --git a/src/arm/macro-assembler-arm.h b/src/arm/macro-assembler-arm.h
index 1ca16ae..ab5efb0 100644
--- a/src/arm/macro-assembler-arm.h
+++ b/src/arm/macro-assembler-arm.h
@@ -1,4 +1,4 @@
-// Copyright 2011 the V8 project authors. All rights reserved.
+// Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -105,13 +105,7 @@
   int CallSize(byte* target, RelocInfo::Mode rmode, Condition cond = al);
   void Call(byte* target, RelocInfo::Mode rmode, Condition cond = al);
   int CallSize(Handle<Code> code, RelocInfo::Mode rmode, Condition cond = al);
-  void Call(Handle<Code> code,
-            RelocInfo::Mode rmode,
-            Condition cond = al);
-  void CallWithAstId(Handle<Code> code,
-            RelocInfo::Mode rmode,
-            unsigned ast_id,
-            Condition cond = al);
+  void Call(Handle<Code> code, RelocInfo::Mode rmode, Condition cond = al);
   void Ret(Condition cond = al);
 
   // Emit code to discard a non-negative number of pointer-sized elements
@@ -964,9 +958,7 @@
 
   void Jump(intptr_t target, RelocInfo::Mode rmode, Condition cond = al);
   int CallSize(intptr_t target, RelocInfo::Mode rmode, Condition cond = al);
-  void Call(intptr_t target,
-            RelocInfo::Mode rmode,
-            Condition cond = al);
+  void Call(intptr_t target, RelocInfo::Mode rmode, Condition cond = al);
 
   // Helper functions for generating invokes.
   void InvokePrologue(const ParameterCount& expected,
diff --git a/src/assembler.cc b/src/assembler.cc
index 77c7b68..ca30e19 100644
--- a/src/assembler.cc
+++ b/src/assembler.cc
@@ -30,7 +30,7 @@
 
 // The original source code covered by the above license above has been
 // modified significantly by Google Inc.
-// Copyright 2011 the V8 project authors. All rights reserved.
+// Copyright 2006-2009 the V8 project authors. All rights reserved.
 
 #include "v8.h"
 
@@ -87,85 +87,58 @@
 // -----------------------------------------------------------------------------
 // Implementation of RelocInfoWriter and RelocIterator
 //
-// Relocation information is written backwards in memory, from high addresses
-// towards low addresses, byte by byte.  Therefore, in the encodings listed
-// below, the first byte listed it at the highest address, and successive
-// bytes in the record are at progressively lower addresses.
-//
 // Encoding
 //
 // The most common modes are given single-byte encodings.  Also, it is
 // easy to identify the type of reloc info and skip unwanted modes in
 // an iteration.
 //
-// The encoding relies on the fact that there are fewer than 14
-// different non-compactly encoded relocation modes.
+// The encoding relies on the fact that there are less than 14
+// different relocation modes.
 //
-// The first byte of a relocation record has a tag in its low 2 bits:
-// Here are the record schemes, depending on the low tag and optional higher
-// tags.
+// embedded_object:    [6 bits pc delta] 00
 //
-// Low tag:
-//   00: embedded_object:      [6-bit pc delta] 00
+// code_taget:         [6 bits pc delta] 01
 //
-//   01: code_target:          [6-bit pc delta] 01
+// position:           [6 bits pc delta] 10,
+//                     [7 bits signed data delta] 0
 //
-//   10: short_data_record:    [6-bit pc delta] 10 followed by
-//                             [6-bit data delta] [2-bit data type tag]
+// statement_position: [6 bits pc delta] 10,
+//                     [7 bits signed data delta] 1
 //
-//   11: long_record           [2-bit high tag][4 bit middle_tag] 11
-//                             followed by variable data depending on type.
+// any nondata mode:   00 [4 bits rmode] 11,  // rmode: 0..13 only
+//                     00 [6 bits pc delta]
 //
-//  2-bit data type tags, used in short_data_record and data_jump long_record:
-//   code_target_with_id: 00
-//   position:            01
-//   statement_position:  10
-//   comment:             11 (not used in short_data_record)
+// pc-jump:            00 1111 11,
+//                     00 [6 bits pc delta]
 //
-//  Long record format:
-//    4-bit middle_tag:
-//      0000 - 1100 : Short record for RelocInfo::Mode middle_tag + 2
-//         (The middle_tag encodes rmode - RelocInfo::LAST_COMPACT_ENUM,
-//          and is between 0000 and 1100)
-//        The format is:
-//                              00 [4 bit middle_tag] 11 followed by
-//                              00 [6 bit pc delta]
+// pc-jump:            01 1111 11,
+// (variable length)   7 - 26 bit pc delta, written in chunks of 7
+//                     bits, the lowest 7 bits written first.
 //
-//      1101: not used (would allow one more relocation mode to be added)
-//      1110: long_data_record
-//        The format is:       [2-bit data_type_tag] 1110 11
-//                             signed intptr_t, lowest byte written first
-//                             (except data_type code_target_with_id, which
-//                             is followed by a signed int, not intptr_t.)
+// data-jump + pos:    00 1110 11,
+//                     signed intptr_t, lowest byte written first
 //
-//      1111: long_pc_jump
-//        The format is:
-//          pc-jump:             00 1111 11,
-//                               00 [6 bits pc delta]
-//        or
-//          pc-jump (variable length):
-//                               01 1111 11,
-//                               [7 bits data] 0
-//                                  ...
-//                               [7 bits data] 1
-//               (Bits 6..31 of pc delta, with leading zeroes
-//                dropped, and last non-zero chunk tagged with 1.)
-
-
+// data-jump + st.pos: 01 1110 11,
+//                     signed intptr_t, lowest byte written first
+//
+// data-jump + comm.:  10 1110 11,
+//                     signed intptr_t, lowest byte written first
+//
 const int kMaxRelocModes = 14;
 
 const int kTagBits = 2;
 const int kTagMask = (1 << kTagBits) - 1;
 const int kExtraTagBits = 4;
-const int kLocatableTypeTagBits = 2;
-const int kSmallDataBits = kBitsPerByte - kLocatableTypeTagBits;
+const int kPositionTypeTagBits = 1;
+const int kSmallDataBits = kBitsPerByte - kPositionTypeTagBits;
 
 const int kEmbeddedObjectTag = 0;
 const int kCodeTargetTag = 1;
-const int kLocatableTag = 2;
+const int kPositionTag = 2;
 const int kDefaultTag = 3;
 
-const int kPCJumpExtraTag = (1 << kExtraTagBits) - 1;
+const int kPCJumpTag = (1 << kExtraTagBits) - 1;
 
 const int kSmallPCDeltaBits = kBitsPerByte - kTagBits;
 const int kSmallPCDeltaMask = (1 << kSmallPCDeltaBits) - 1;
@@ -179,12 +152,11 @@
 const int kLastChunkTag = 1;
 
 
-const int kDataJumpExtraTag = kPCJumpExtraTag - 1;
+const int kDataJumpTag = kPCJumpTag - 1;
 
-const int kCodeWithIdTag = 0;
-const int kNonstatementPositionTag = 1;
-const int kStatementPositionTag = 2;
-const int kCommentTag = 3;
+const int kNonstatementPositionTag = 0;
+const int kStatementPositionTag = 1;
+const int kCommentTag = 2;
 
 
 uint32_t RelocInfoWriter::WriteVariableLengthPCJump(uint32_t pc_delta) {
@@ -192,7 +164,7 @@
   // Otherwise write a variable length PC jump for the bits that do
   // not fit in the kSmallPCDeltaBits bits.
   if (is_uintn(pc_delta, kSmallPCDeltaBits)) return pc_delta;
-  WriteExtraTag(kPCJumpExtraTag, kVariableLengthPCJumpTopTag);
+  WriteExtraTag(kPCJumpTag, kVariableLengthPCJumpTopTag);
   uint32_t pc_jump = pc_delta >> kSmallPCDeltaBits;
   ASSERT(pc_jump > 0);
   // Write kChunkBits size chunks of the pc_jump.
@@ -215,7 +187,7 @@
 
 
 void RelocInfoWriter::WriteTaggedData(intptr_t data_delta, int tag) {
-  *--pos_ = static_cast<byte>(data_delta << kLocatableTypeTagBits | tag);
+  *--pos_ = static_cast<byte>(data_delta << kPositionTypeTagBits | tag);
 }
 
 
@@ -234,20 +206,11 @@
 }
 
 
-void RelocInfoWriter::WriteExtraTaggedIntData(int data_delta, int top_tag) {
-  WriteExtraTag(kDataJumpExtraTag, top_tag);
-  for (int i = 0; i < kIntSize; i++) {
-    *--pos_ = static_cast<byte>(data_delta);
-    // Signed right shift is arithmetic shift.  Tested in test-utils.cc.
-    data_delta = data_delta >> kBitsPerByte;
-  }
-}
-
 void RelocInfoWriter::WriteExtraTaggedData(intptr_t data_delta, int top_tag) {
-  WriteExtraTag(kDataJumpExtraTag, top_tag);
+  WriteExtraTag(kDataJumpTag, top_tag);
   for (int i = 0; i < kIntptrSize; i++) {
     *--pos_ = static_cast<byte>(data_delta);
-    // Signed right shift is arithmetic shift.  Tested in test-utils.cc.
+  // Signed right shift is arithmetic shift.  Tested in test-utils.cc.
     data_delta = data_delta >> kBitsPerByte;
   }
 }
@@ -258,8 +221,7 @@
   byte* begin_pos = pos_;
 #endif
   ASSERT(rinfo->pc() - last_pc_ >= 0);
-  ASSERT(RelocInfo::NUMBER_OF_MODES - RelocInfo::LAST_COMPACT_ENUM <=
-         kMaxRelocModes);
+  ASSERT(RelocInfo::NUMBER_OF_MODES <= kMaxRelocModes);
   // Use unsigned delta-encoding for pc.
   uint32_t pc_delta = static_cast<uint32_t>(rinfo->pc() - last_pc_);
   RelocInfo::Mode rmode = rinfo->rmode();
@@ -270,48 +232,35 @@
   } else if (rmode == RelocInfo::CODE_TARGET) {
     WriteTaggedPC(pc_delta, kCodeTargetTag);
     ASSERT(begin_pos - pos_ <= RelocInfo::kMaxCallSize);
-  } else if (rmode == RelocInfo::CODE_TARGET_WITH_ID) {
-    // Use signed delta-encoding for id.
-    ASSERT(static_cast<int>(rinfo->data()) == rinfo->data());
-    int id_delta = static_cast<int>(rinfo->data()) - last_id_;
-    // Check if delta is small enough to fit in a tagged byte.
-    if (is_intn(id_delta, kSmallDataBits)) {
-      WriteTaggedPC(pc_delta, kLocatableTag);
-      WriteTaggedData(id_delta, kCodeWithIdTag);
-    } else {
-      // Otherwise, use costly encoding.
-      WriteExtraTaggedPC(pc_delta, kPCJumpExtraTag);
-      WriteExtraTaggedIntData(id_delta, kCodeWithIdTag);
-    }
-    last_id_ = static_cast<int>(rinfo->data());
   } else if (RelocInfo::IsPosition(rmode)) {
-    // Use signed delta-encoding for position.
-    ASSERT(static_cast<int>(rinfo->data()) == rinfo->data());
-    int pos_delta = static_cast<int>(rinfo->data()) - last_position_;
-    int pos_type_tag = (rmode == RelocInfo::POSITION) ? kNonstatementPositionTag
-                                                      : kStatementPositionTag;
-    // Check if delta is small enough to fit in a tagged byte.
-    if (is_intn(pos_delta, kSmallDataBits)) {
-      WriteTaggedPC(pc_delta, kLocatableTag);
-      WriteTaggedData(pos_delta, pos_type_tag);
+    // Use signed delta-encoding for data.
+    intptr_t data_delta = rinfo->data() - last_data_;
+    int pos_type_tag = rmode == RelocInfo::POSITION ? kNonstatementPositionTag
+                                                    : kStatementPositionTag;
+    // Check if data is small enough to fit in a tagged byte.
+    // We cannot use is_intn because data_delta is not an int32_t.
+    if (data_delta >= -(1 << (kSmallDataBits-1)) &&
+        data_delta < 1 << (kSmallDataBits-1)) {
+      WriteTaggedPC(pc_delta, kPositionTag);
+      WriteTaggedData(data_delta, pos_type_tag);
+      last_data_ = rinfo->data();
     } else {
       // Otherwise, use costly encoding.
-      WriteExtraTaggedPC(pc_delta, kPCJumpExtraTag);
-      WriteExtraTaggedIntData(pos_delta, pos_type_tag);
+      WriteExtraTaggedPC(pc_delta, kPCJumpTag);
+      WriteExtraTaggedData(data_delta, pos_type_tag);
+      last_data_ = rinfo->data();
     }
-    last_position_ = static_cast<int>(rinfo->data());
   } else if (RelocInfo::IsComment(rmode)) {
     // Comments are normally not generated, so we use the costly encoding.
-    WriteExtraTaggedPC(pc_delta, kPCJumpExtraTag);
-    WriteExtraTaggedData(rinfo->data(), kCommentTag);
+    WriteExtraTaggedPC(pc_delta, kPCJumpTag);
+    WriteExtraTaggedData(rinfo->data() - last_data_, kCommentTag);
+    last_data_ = rinfo->data();
     ASSERT(begin_pos - pos_ >= RelocInfo::kMinRelocCommentSize);
   } else {
-    ASSERT(rmode > RelocInfo::LAST_COMPACT_ENUM);
-    int saved_mode = rmode - RelocInfo::LAST_COMPACT_ENUM;
     // For all other modes we simply use the mode as the extra tag.
     // None of these modes need a data component.
-    ASSERT(saved_mode < kPCJumpExtraTag && saved_mode < kDataJumpExtraTag);
-    WriteExtraTaggedPC(pc_delta, saved_mode);
+    ASSERT(rmode < kPCJumpTag && rmode < kDataJumpTag);
+    WriteExtraTaggedPC(pc_delta, rmode);
   }
   last_pc_ = rinfo->pc();
 #ifdef DEBUG
@@ -345,32 +294,12 @@
 }
 
 
-void RelocIterator::AdvanceReadId() {
-  int x = 0;
-  for (int i = 0; i < kIntSize; i++) {
-    x |= static_cast<int>(*--pos_) << i * kBitsPerByte;
-  }
-  last_id_ += x;
-  rinfo_.data_ = last_id_;
-}
-
-
-void RelocIterator::AdvanceReadPosition() {
-  int x = 0;
-  for (int i = 0; i < kIntSize; i++) {
-    x |= static_cast<int>(*--pos_) << i * kBitsPerByte;
-  }
-  last_position_ += x;
-  rinfo_.data_ = last_position_;
-}
-
-
 void RelocIterator::AdvanceReadData() {
   intptr_t x = 0;
   for (int i = 0; i < kIntptrSize; i++) {
     x |= static_cast<intptr_t>(*--pos_) << i * kBitsPerByte;
   }
-  rinfo_.data_ = x;
+  rinfo_.data_ += x;
 }
 
 
@@ -390,33 +319,27 @@
 }
 
 
-inline int RelocIterator::GetLocatableTypeTag() {
-  return *pos_ & ((1 << kLocatableTypeTagBits) - 1);
+inline int RelocIterator::GetPositionTypeTag() {
+  return *pos_ & ((1 << kPositionTypeTagBits) - 1);
 }
 
 
-inline void RelocIterator::ReadTaggedId() {
+inline void RelocIterator::ReadTaggedData() {
   int8_t signed_b = *pos_;
   // Signed right shift is arithmetic shift.  Tested in test-utils.cc.
-  last_id_ += signed_b >> kLocatableTypeTagBits;
-  rinfo_.data_ = last_id_;
+  rinfo_.data_ += signed_b >> kPositionTypeTagBits;
 }
 
 
-inline void RelocIterator::ReadTaggedPosition() {
-  int8_t signed_b = *pos_;
-  // Signed right shift is arithmetic shift.  Tested in test-utils.cc.
-  last_position_ += signed_b >> kLocatableTypeTagBits;
-  rinfo_.data_ = last_position_;
-}
-
-
-static inline RelocInfo::Mode GetPositionModeFromTag(int tag) {
-  ASSERT(tag == kNonstatementPositionTag ||
-         tag == kStatementPositionTag);
-  return (tag == kNonstatementPositionTag) ?
-         RelocInfo::POSITION :
-         RelocInfo::STATEMENT_POSITION;
+inline RelocInfo::Mode RelocIterator::DebugInfoModeFromTag(int tag) {
+  if (tag == kStatementPositionTag) {
+    return RelocInfo::STATEMENT_POSITION;
+  } else if (tag == kNonstatementPositionTag) {
+    return RelocInfo::POSITION;
+  } else {
+    ASSERT(tag == kCommentTag);
+    return RelocInfo::COMMENT;
+  }
 }
 
 
@@ -435,64 +358,37 @@
     } else if (tag == kCodeTargetTag) {
       ReadTaggedPC();
       if (SetMode(RelocInfo::CODE_TARGET)) return;
-    } else if (tag == kLocatableTag) {
+    } else if (tag == kPositionTag) {
       ReadTaggedPC();
       Advance();
-      int locatable_tag = GetLocatableTypeTag();
-      if (locatable_tag == kCodeWithIdTag) {
-        if (SetMode(RelocInfo::CODE_TARGET_WITH_ID)) {
-          ReadTaggedId();
-          return;
-        }
-      } else {
-        // Compact encoding is never used for comments,
-        // so it must be a position.
-        ASSERT(locatable_tag == kNonstatementPositionTag ||
-               locatable_tag == kStatementPositionTag);
-        if (mode_mask_ & RelocInfo::kPositionMask) {
-          ReadTaggedPosition();
-          if (SetMode(GetPositionModeFromTag(locatable_tag))) return;
-        }
+      // Check if we want source positions.
+      if (mode_mask_ & RelocInfo::kPositionMask) {
+        ReadTaggedData();
+        if (SetMode(DebugInfoModeFromTag(GetPositionTypeTag()))) return;
       }
     } else {
       ASSERT(tag == kDefaultTag);
       int extra_tag = GetExtraTag();
-      if (extra_tag == kPCJumpExtraTag) {
+      if (extra_tag == kPCJumpTag) {
         int top_tag = GetTopTag();
         if (top_tag == kVariableLengthPCJumpTopTag) {
           AdvanceReadVariableLengthPCJump();
         } else {
           AdvanceReadPC();
         }
-      } else if (extra_tag == kDataJumpExtraTag) {
-        int locatable_tag = GetTopTag();
-        if (locatable_tag == kCodeWithIdTag) {
-          if (SetMode(RelocInfo::CODE_TARGET_WITH_ID)) {
-            AdvanceReadId();
-            return;
-          }
-          Advance(kIntSize);
-        } else if (locatable_tag != kCommentTag) {
-          ASSERT(locatable_tag == kNonstatementPositionTag ||
-                 locatable_tag == kStatementPositionTag);
-          if (mode_mask_ & RelocInfo::kPositionMask) {
-            AdvanceReadPosition();
-            if (SetMode(GetPositionModeFromTag(locatable_tag))) return;
-          } else {
-            Advance(kIntSize);
-          }
+      } else if (extra_tag == kDataJumpTag) {
+        // Check if we want debug modes (the only ones with data).
+        if (mode_mask_ & RelocInfo::kDebugMask) {
+          int top_tag = GetTopTag();
+          AdvanceReadData();
+          if (SetMode(DebugInfoModeFromTag(top_tag))) return;
         } else {
-          ASSERT(locatable_tag == kCommentTag);
-          if (SetMode(RelocInfo::COMMENT)) {
-            AdvanceReadData();
-            return;
-          }
+          // Otherwise, just skip over the data.
           Advance(kIntptrSize);
         }
       } else {
         AdvanceReadPC();
-        int rmode = extra_tag + RelocInfo::LAST_COMPACT_ENUM;
-        if (SetMode(static_cast<RelocInfo::Mode>(rmode))) return;
+        if (SetMode(static_cast<RelocInfo::Mode>(extra_tag))) return;
       }
     }
   }
@@ -508,8 +404,6 @@
   end_ = code->relocation_start();
   done_ = false;
   mode_mask_ = mode_mask;
-  last_id_ = 0;
-  last_position_ = 0;
   if (mode_mask_ == 0) pos_ = end_;
   next();
 }
@@ -523,8 +417,6 @@
   end_ = pos_ - desc.reloc_size;
   done_ = false;
   mode_mask_ = mode_mask;
-  last_id_ = 0;
-  last_position_ = 0;
   if (mode_mask_ == 0) pos_ = end_;
   next();
 }
@@ -552,8 +444,6 @@
       return "debug break";
     case RelocInfo::CODE_TARGET:
       return "code target";
-    case RelocInfo::CODE_TARGET_WITH_ID:
-      return "code target with id";
     case RelocInfo::GLOBAL_PROPERTY_CELL:
       return "global property cell";
     case RelocInfo::RUNTIME_ENTRY:
@@ -600,9 +490,6 @@
     Code* code = Code::GetCodeFromTargetAddress(target_address());
     PrintF(out, " (%s)  (%p)", Code::Kind2String(code->kind()),
            target_address());
-    if (rmode_ == CODE_TARGET_WITH_ID) {
-      PrintF(" (id=%d)", static_cast<int>(data_));
-    }
   } else if (IsPosition(rmode_)) {
     PrintF(out, "  (%" V8_PTR_PREFIX "d)", data());
   } else if (rmode_ == RelocInfo::RUNTIME_ENTRY &&
@@ -636,7 +523,6 @@
 #endif
     case CONSTRUCT_CALL:
     case CODE_TARGET_CONTEXT:
-    case CODE_TARGET_WITH_ID:
     case CODE_TARGET: {
       // convert inline target address to code object
       Address addr = target_address();
diff --git a/src/assembler.h b/src/assembler.h
index 918de62..e8cecc3 100644
--- a/src/assembler.h
+++ b/src/assembler.h
@@ -42,7 +42,7 @@
 namespace v8 {
 namespace internal {
 
-const unsigned kNoASTId = -1;
+
 // -----------------------------------------------------------------------------
 // Platform independent assembler base class.
 
@@ -209,11 +209,10 @@
 
   enum Mode {
     // Please note the order is important (see IsCodeTarget, IsGCRelocMode).
-    CODE_TARGET,  // Code target which is not any of the above.
-    CODE_TARGET_WITH_ID,
     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,
 
@@ -229,12 +228,10 @@
 
     // add more as needed
     // Pseudo-types
-    NUMBER_OF_MODES,  // There are at most 14 modes with noncompact encoding.
+    NUMBER_OF_MODES,  // must be no greater than 14 - see RelocInfoWriter
     NONE,  // never recorded
-    LAST_CODE_ENUM = DEBUG_BREAK,
-    LAST_GCED_ENUM = GLOBAL_PROPERTY_CELL,
-    // Modes <= LAST_COMPACT_ENUM are guaranteed to have compact encoding.
-    LAST_COMPACT_ENUM = CODE_TARGET_WITH_ID
+    LAST_CODE_ENUM = CODE_TARGET,
+    LAST_GCED_ENUM = GLOBAL_PROPERTY_CELL
   };
 
 
@@ -364,8 +361,7 @@
 
   static const int kCodeTargetMask = (1 << (LAST_CODE_ENUM + 1)) - 1;
   static const int kPositionMask = 1 << POSITION | 1 << STATEMENT_POSITION;
-  static const int kDataMask =
-      (1 << CODE_TARGET_WITH_ID) | kPositionMask | (1 << COMMENT);
+  static const int kDebugMask = kPositionMask | 1 << COMMENT;
   static const int kApplyMask;  // Modes affected by apply. Depends on arch.
 
  private:
@@ -384,14 +380,9 @@
 // lower addresses.
 class RelocInfoWriter BASE_EMBEDDED {
  public:
-  RelocInfoWriter() : pos_(NULL),
-                      last_pc_(NULL),
-                      last_id_(0),
-                      last_position_(0) {}
-  RelocInfoWriter(byte* pos, byte* pc) : pos_(pos),
-                                         last_pc_(pc),
-                                         last_id_(0),
-                                         last_position_(0) {}
+  RelocInfoWriter() : pos_(NULL), last_pc_(NULL), last_data_(0) {}
+  RelocInfoWriter(byte* pos, byte* pc) : pos_(pos), last_pc_(pc),
+                                         last_data_(0) {}
 
   byte* pos() const { return pos_; }
   byte* last_pc() const { return last_pc_; }
@@ -416,15 +407,13 @@
   inline uint32_t WriteVariableLengthPCJump(uint32_t pc_delta);
   inline void WriteTaggedPC(uint32_t pc_delta, int tag);
   inline void WriteExtraTaggedPC(uint32_t pc_delta, int extra_tag);
-  inline void WriteExtraTaggedIntData(int data_delta, int top_tag);
   inline void WriteExtraTaggedData(intptr_t data_delta, int top_tag);
   inline void WriteTaggedData(intptr_t data_delta, int tag);
   inline void WriteExtraTag(int extra_tag, int top_tag);
 
   byte* pos_;
   byte* last_pc_;
-  int last_id_;
-  int last_position_;
+  intptr_t last_data_;
   DISALLOW_COPY_AND_ASSIGN(RelocInfoWriter);
 };
 
@@ -466,13 +455,12 @@
   int GetTopTag();
   void ReadTaggedPC();
   void AdvanceReadPC();
-  void AdvanceReadId();
-  void AdvanceReadPosition();
   void AdvanceReadData();
   void AdvanceReadVariableLengthPCJump();
-  int GetLocatableTypeTag();
-  void ReadTaggedId();
-  void ReadTaggedPosition();
+  int GetPositionTypeTag();
+  void ReadTaggedData();
+
+  static RelocInfo::Mode DebugInfoModeFromTag(int tag);
 
   // If the given mode is wanted, set it in rinfo_ and return true.
   // Else return false. Used for efficiently skipping unwanted modes.
@@ -485,8 +473,6 @@
   RelocInfo rinfo_;
   bool done_;
   int mode_mask_;
-  int last_id_;
-  int last_position_;
   DISALLOW_COPY_AND_ASSIGN(RelocIterator);
 };
 
diff --git a/src/disassembler.cc b/src/disassembler.cc
index 368c3a8..65e1668 100644
--- a/src/disassembler.cc
+++ b/src/disassembler.cc
@@ -282,9 +282,6 @@
         } else {
           out.AddFormatted(" %s", Code::Kind2String(kind));
         }
-        if (rmode == RelocInfo::CODE_TARGET_WITH_ID) {
-          out.AddFormatted(" (id = %d)", static_cast<int>(relocinfo.data()));
-        }
       } else if (rmode == RelocInfo::RUNTIME_ENTRY &&
                  Isolate::Current()->deoptimizer_data() != NULL) {
         // A runtime entry reloinfo might be a deoptimization bailout.
diff --git a/src/full-codegen.cc b/src/full-codegen.cc
index 1c2f7bf..d6ba56e 100644
--- a/src/full-codegen.cc
+++ b/src/full-codegen.cc
@@ -744,7 +744,7 @@
       if (ShouldInlineSmiCase(op)) {
         EmitInlineSmiBinaryOp(expr, op, mode, left, right);
       } else {
-        EmitBinaryOp(expr, op, mode);
+        EmitBinaryOp(op, mode);
       }
       break;
     }
diff --git a/src/full-codegen.h b/src/full-codegen.h
index a373809..d6ed1b9 100644
--- a/src/full-codegen.h
+++ b/src/full-codegen.h
@@ -1,4 +1,4 @@
-// Copyright 2011 the V8 project authors. All rights reserved.
+// Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -445,13 +445,12 @@
 
   // Apply the compound assignment operator. Expects the left operand on top
   // of the stack and the right one in the accumulator.
-  void EmitBinaryOp(BinaryOperation* expr,
-                    Token::Value op,
+  void EmitBinaryOp(Token::Value op,
                     OverwriteMode mode);
 
   // Helper functions for generating inlined smi code for certain
   // binary operations.
-  void EmitInlineSmiBinaryOp(BinaryOperation* expr,
+  void EmitInlineSmiBinaryOp(Expression* expr,
                              Token::Value op,
                              OverwriteMode mode,
                              Expression* left,
@@ -513,16 +512,12 @@
   static Register context_register();
 
   // Helper for calling an IC stub.
-  void EmitCallIC(Handle<Code> ic,
-                  RelocInfo::Mode mode,
-                  unsigned ast_id);
+  void EmitCallIC(Handle<Code> ic, RelocInfo::Mode mode);
 
   // Calling an IC stub with a patch site. Passing NULL for patch_site
   // or non NULL patch_site which is not activated indicates no inlined smi code
   // and emits a nop after the IC call.
-  void EmitCallIC(Handle<Code> ic,
-                  JumpPatchSite* patch_site,
-                  unsigned ast_id);
+  void EmitCallIC(Handle<Code> ic, JumpPatchSite* patch_site);
 
   // Set fields in the stack frame. Offsets are the frame pointer relative
   // offsets defined in, e.g., StandardFrameConstants.
diff --git a/src/ia32/assembler-ia32-inl.h b/src/ia32/assembler-ia32-inl.h
index 7f7e349..a9247f4 100644
--- a/src/ia32/assembler-ia32-inl.h
+++ b/src/ia32/assembler-ia32-inl.h
@@ -30,7 +30,7 @@
 
 // The original source code covered by the above license above has been
 // modified significantly by Google Inc.
-// Copyright 2011 the V8 project authors. All rights reserved.
+// Copyright 2006-2008 the V8 project authors. All rights reserved.
 
 // A light-weight IA32 Assembler.
 
@@ -311,12 +311,8 @@
 }
 
 
-void Assembler::emit(uint32_t x, RelocInfo::Mode rmode, unsigned id) {
-  if (rmode == RelocInfo::CODE_TARGET && id != kNoASTId) {
-    RecordRelocInfo(RelocInfo::CODE_TARGET_WITH_ID, static_cast<intptr_t>(id));
-  } else if (rmode != RelocInfo::NONE) {
-    RecordRelocInfo(rmode);
-  }
+void Assembler::emit(uint32_t x, RelocInfo::Mode rmode) {
+  if (rmode != RelocInfo::NONE) RecordRelocInfo(rmode);
   emit(x);
 }
 
diff --git a/src/ia32/assembler-ia32.cc b/src/ia32/assembler-ia32.cc
index a91b0c4..9273037 100644
--- a/src/ia32/assembler-ia32.cc
+++ b/src/ia32/assembler-ia32.cc
@@ -1589,15 +1589,13 @@
 }
 
 
-void Assembler::call(Handle<Code> code,
-                     RelocInfo::Mode rmode,
-                     unsigned ast_id) {
+void Assembler::call(Handle<Code> code, RelocInfo::Mode rmode) {
   positions_recorder()->WriteRecordedPositions();
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;
   ASSERT(RelocInfo::IsCodeTarget(rmode));
   EMIT(0xE8);
-  emit(reinterpret_cast<intptr_t>(code.location()), rmode, ast_id);
+  emit(reinterpret_cast<intptr_t>(code.location()), rmode);
 }
 
 
diff --git a/src/ia32/assembler-ia32.h b/src/ia32/assembler-ia32.h
index 86ce8a6..079dca7 100644
--- a/src/ia32/assembler-ia32.h
+++ b/src/ia32/assembler-ia32.h
@@ -848,9 +848,7 @@
   void call(Label* L);
   void call(byte* entry, RelocInfo::Mode rmode);
   void call(const Operand& adr);
-  void call(Handle<Code> code,
-            RelocInfo::Mode rmode,
-            unsigned ast_id = kNoASTId);
+  void call(Handle<Code> code, RelocInfo::Mode rmode);
 
   // Jumps
   void jmp(Label* L);  // unconditional jump to L
@@ -1072,9 +1070,7 @@
   void GrowBuffer();
   inline void emit(uint32_t x);
   inline void emit(Handle<Object> handle);
-  inline void emit(uint32_t x,
-                   RelocInfo::Mode rmode,
-                   unsigned ast_id = kNoASTId);
+  inline void emit(uint32_t x, RelocInfo::Mode rmode);
   inline void emit(const Immediate& x);
   inline void emit_w(const Immediate& x);
 
diff --git a/src/ia32/full-codegen-ia32.cc b/src/ia32/full-codegen-ia32.cc
index 12287a5..69d5e77 100644
--- a/src/ia32/full-codegen-ia32.cc
+++ b/src/ia32/full-codegen-ia32.cc
@@ -44,11 +44,6 @@
 
 #define __ ACCESS_MASM(masm_)
 
-static unsigned GetPropertyId(Property* property) {
-  if (property->is_synthetic()) return AstNode::kNoNumber;
-  return property->id();
-}
-
 
 class JumpPatchSite BASE_EMBEDDED {
  public:
@@ -740,7 +735,7 @@
       Handle<Code> ic = is_strict_mode()
           ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
           : isolate()->builtins()->KeyedStoreIC_Initialize();
-      EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+      EmitCallIC(ic, RelocInfo::CODE_TARGET);
     }
   }
 }
@@ -813,7 +808,7 @@
     // Record position before stub call for type feedback.
     SetSourcePosition(clause->position());
     Handle<Code> ic = CompareIC::GetUninitialized(Token::EQ_STRICT);
-    EmitCallIC(ic, &patch_site, clause->label()->id());
+    EmitCallIC(ic, &patch_site);
     __ test(eax, Operand(eax));
     __ j(not_equal, &next_test);
     __ Drop(1);  // Switch value is no longer needed.
@@ -1111,7 +1106,7 @@
   RelocInfo::Mode mode = (typeof_state == INSIDE_TYPEOF)
       ? RelocInfo::CODE_TARGET
       : RelocInfo::CODE_TARGET_CONTEXT;
-  EmitCallIC(ic, mode, AstNode::kNoNumber);
+  EmitCallIC(ic, mode);
 }
 
 
@@ -1192,7 +1187,7 @@
           __ mov(eax, Immediate(key_literal->handle()));
           Handle<Code> ic =
               isolate()->builtins()->KeyedLoadIC_Initialize();
-          EmitCallIC(ic, RelocInfo::CODE_TARGET, GetPropertyId(property));
+          EmitCallIC(ic, RelocInfo::CODE_TARGET);
           __ jmp(done);
         }
       }
@@ -1215,7 +1210,7 @@
     __ mov(eax, GlobalObjectOperand());
     __ mov(ecx, var->name());
     Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize();
-    EmitCallIC(ic, RelocInfo::CODE_TARGET_CONTEXT, AstNode::kNoNumber);
+    EmitCallIC(ic, RelocInfo::CODE_TARGET_CONTEXT);
     context()->Plug(eax);
 
   } else if (slot != NULL && slot->type() == Slot::LOOKUP) {
@@ -1278,7 +1273,7 @@
 
     // Do a keyed property load.
     Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize();
-    EmitCallIC(ic, RelocInfo::CODE_TARGET, GetPropertyId(property));
+    EmitCallIC(ic, RelocInfo::CODE_TARGET);
 
     // Drop key and object left on the stack by IC.
     context()->Plug(eax);
@@ -1391,7 +1386,7 @@
             Handle<Code> ic = is_strict_mode()
                 ? isolate()->builtins()->StoreIC_Initialize_Strict()
                 : isolate()->builtins()->StoreIC_Initialize();
-            EmitCallIC(ic, RelocInfo::CODE_TARGET, key->id());
+            EmitCallIC(ic, RelocInfo::CODE_TARGET);
             PrepareForBailoutForId(key->id(), NO_REGISTERS);
           } else {
             VisitForEffect(value);
@@ -1598,13 +1593,13 @@
     SetSourcePosition(expr->position() + 1);
     AccumulatorValueContext context(this);
     if (ShouldInlineSmiCase(op)) {
-      EmitInlineSmiBinaryOp(expr->binary_operation(),
+      EmitInlineSmiBinaryOp(expr,
                             op,
                             mode,
                             expr->target(),
                             expr->value());
     } else {
-      EmitBinaryOp(expr->binary_operation(), op, mode);
+      EmitBinaryOp(op, mode);
     }
 
     // Deoptimization point in case the binary operation may have side effects.
@@ -1639,18 +1634,18 @@
   Literal* key = prop->key()->AsLiteral();
   __ mov(ecx, Immediate(key->handle()));
   Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize();
-  EmitCallIC(ic, RelocInfo::CODE_TARGET, GetPropertyId(prop));
+  EmitCallIC(ic, RelocInfo::CODE_TARGET);
 }
 
 
 void FullCodeGenerator::EmitKeyedPropertyLoad(Property* prop) {
   SetSourcePosition(prop->position());
   Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize();
-  EmitCallIC(ic, RelocInfo::CODE_TARGET, GetPropertyId(prop));
+  EmitCallIC(ic, RelocInfo::CODE_TARGET);
 }
 
 
-void FullCodeGenerator::EmitInlineSmiBinaryOp(BinaryOperation* expr,
+void FullCodeGenerator::EmitInlineSmiBinaryOp(Expression* expr,
                                               Token::Value op,
                                               OverwriteMode mode,
                                               Expression* left,
@@ -1667,7 +1662,7 @@
   __ bind(&stub_call);
   __ mov(eax, ecx);
   TypeRecordingBinaryOpStub stub(op, mode);
-  EmitCallIC(stub.GetCode(), &patch_site, expr->id());
+  EmitCallIC(stub.GetCode(), &patch_site);
   __ jmp(&done);
 
   // Smi case.
@@ -1745,13 +1740,11 @@
 }
 
 
-void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr,
-                                     Token::Value op,
+void FullCodeGenerator::EmitBinaryOp(Token::Value op,
                                      OverwriteMode mode) {
   __ pop(edx);
   TypeRecordingBinaryOpStub stub(op, mode);
-  // NULL signals no inlined smi code.
-  EmitCallIC(stub.GetCode(), NULL, expr->id());
+  EmitCallIC(stub.GetCode(), NULL);  // NULL signals no inlined smi code.
   context()->Plug(eax);
 }
 
@@ -1791,7 +1784,7 @@
       Handle<Code> ic = is_strict_mode()
           ? isolate()->builtins()->StoreIC_Initialize_Strict()
           : isolate()->builtins()->StoreIC_Initialize();
-      EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+      EmitCallIC(ic, RelocInfo::CODE_TARGET);
       break;
     }
     case KEYED_PROPERTY: {
@@ -1814,7 +1807,7 @@
       Handle<Code> ic = is_strict_mode()
           ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
           : isolate()->builtins()->KeyedStoreIC_Initialize();
-      EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+      EmitCallIC(ic, RelocInfo::CODE_TARGET);
       break;
     }
   }
@@ -1840,7 +1833,7 @@
     Handle<Code> ic = is_strict_mode()
         ? isolate()->builtins()->StoreIC_Initialize_Strict()
         : isolate()->builtins()->StoreIC_Initialize();
-    EmitCallIC(ic, RelocInfo::CODE_TARGET_CONTEXT, AstNode::kNoNumber);
+    EmitCallIC(ic, RelocInfo::CODE_TARGET_CONTEXT);
 
   } else if (op == Token::INIT_CONST) {
     // Like var declarations, const declarations are hoisted to function
@@ -1943,7 +1936,7 @@
   Handle<Code> ic = is_strict_mode()
       ? isolate()->builtins()->StoreIC_Initialize_Strict()
       : isolate()->builtins()->StoreIC_Initialize();
-  EmitCallIC(ic, RelocInfo::CODE_TARGET, expr->id());
+  EmitCallIC(ic, RelocInfo::CODE_TARGET);
 
   // If the assignment ends an initialization block, revert to fast case.
   if (expr->ends_initialization_block()) {
@@ -1983,7 +1976,7 @@
   Handle<Code> ic = is_strict_mode()
       ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
       : isolate()->builtins()->KeyedStoreIC_Initialize();
-  EmitCallIC(ic, RelocInfo::CODE_TARGET, expr->id());
+  EmitCallIC(ic, RelocInfo::CODE_TARGET);
 
   // If the assignment ends an initialization block, revert to fast case.
   if (expr->ends_initialization_block()) {
@@ -2034,7 +2027,7 @@
   InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP;
   Handle<Code> ic = isolate()->stub_cache()->ComputeCallInitialize(
       arg_count, in_loop);
-  EmitCallIC(ic, mode, expr->id());
+  EmitCallIC(ic, mode);
   RecordJSReturnSite(expr);
   // Restore context register.
   __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset));
@@ -2068,7 +2061,7 @@
   Handle<Code> ic = isolate()->stub_cache()->ComputeKeyedCallInitialize(
       arg_count, in_loop);
   __ mov(ecx, Operand(esp, (arg_count + 1) * kPointerSize));  // Key.
-  EmitCallIC(ic, mode, expr->id());
+  EmitCallIC(ic, mode);
   RecordJSReturnSite(expr);
   // Restore context register.
   __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset));
@@ -2259,7 +2252,7 @@
         SetSourcePosition(prop->position());
 
         Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize();
-        EmitCallIC(ic, RelocInfo::CODE_TARGET, GetPropertyId(prop));
+        EmitCallIC(ic, RelocInfo::CODE_TARGET);
         // Push result (function).
         __ push(eax);
         // Push Global receiver.
@@ -3618,7 +3611,7 @@
     InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP;
     Handle<Code> ic = isolate()->stub_cache()->ComputeCallInitialize(
         arg_count, in_loop);
-    EmitCallIC(ic, RelocInfo::CODE_TARGET, expr->id());
+    EmitCallIC(ic, RelocInfo::CODE_TARGET);
     // Restore context register.
     __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset));
   } else {
@@ -3905,7 +3898,7 @@
   __ mov(edx, eax);
   __ mov(eax, Immediate(Smi::FromInt(1)));
   TypeRecordingBinaryOpStub stub(expr->binary_op(), NO_OVERWRITE);
-  EmitCallIC(stub.GetCode(), &patch_site, expr->CountId());
+  EmitCallIC(stub.GetCode(), &patch_site);
   __ bind(&done);
 
   // Store the value returned in eax.
@@ -3938,7 +3931,7 @@
       Handle<Code> ic = is_strict_mode()
           ? isolate()->builtins()->StoreIC_Initialize_Strict()
           : isolate()->builtins()->StoreIC_Initialize();
-      EmitCallIC(ic, RelocInfo::CODE_TARGET, expr->id());
+      EmitCallIC(ic, RelocInfo::CODE_TARGET);
       PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
@@ -3955,7 +3948,7 @@
       Handle<Code> ic = is_strict_mode()
           ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
           : isolate()->builtins()->KeyedStoreIC_Initialize();
-      EmitCallIC(ic, RelocInfo::CODE_TARGET, expr->id());
+      EmitCallIC(ic, RelocInfo::CODE_TARGET);
       PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       if (expr->is_postfix()) {
         // Result is on the stack
@@ -3983,7 +3976,7 @@
     Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize();
     // Use a regular load, not a contextual load, to avoid a reference
     // error.
-    EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+    EmitCallIC(ic, RelocInfo::CODE_TARGET);
     PrepareForBailout(expr, TOS_REG);
     context()->Plug(eax);
   } else if (proxy != NULL &&
@@ -4182,7 +4175,7 @@
       // Record position and call the compare IC.
       SetSourcePosition(expr->position());
       Handle<Code> ic = CompareIC::GetUninitialized(op);
-      EmitCallIC(ic, &patch_site, expr->id());
+      EmitCallIC(ic, &patch_site);
 
       PrepareForBailoutBeforeSplit(TOS_REG, true, if_true, if_false);
       __ test(eax, Operand(eax));
@@ -4242,9 +4235,7 @@
 }
 
 
-void FullCodeGenerator::EmitCallIC(Handle<Code> ic,
-                                   RelocInfo::Mode mode,
-                                   unsigned ast_id) {
+void FullCodeGenerator::EmitCallIC(Handle<Code> ic, RelocInfo::Mode mode) {
   ASSERT(mode == RelocInfo::CODE_TARGET ||
          mode == RelocInfo::CODE_TARGET_CONTEXT);
   switch (ic->kind()) {
@@ -4262,13 +4253,11 @@
     default:
       break;
   }
-  __ call(ic, mode, ast_id);
+  __ call(ic, mode);
 }
 
 
-void FullCodeGenerator::EmitCallIC(Handle<Code> ic,
-                                   JumpPatchSite* patch_site,
-                                   unsigned ast_id) {
+void FullCodeGenerator::EmitCallIC(Handle<Code> ic, JumpPatchSite* patch_site) {
   Counters* counters = isolate()->counters();
   switch (ic->kind()) {
     case Code::LOAD_IC:
@@ -4285,7 +4274,7 @@
     default:
       break;
   }
-  __ call(ic, RelocInfo::CODE_TARGET, ast_id);
+  __ call(ic, RelocInfo::CODE_TARGET);
   if (patch_site != NULL && patch_site->is_bound()) {
     patch_site->EmitPatchInfo();
   } else {
diff --git a/src/ia32/macro-assembler-ia32.cc b/src/ia32/macro-assembler-ia32.cc
index 0c24fc4..ad567bc 100644
--- a/src/ia32/macro-assembler-ia32.cc
+++ b/src/ia32/macro-assembler-ia32.cc
@@ -1104,9 +1104,9 @@
 }
 
 
-void MacroAssembler::CallStub(CodeStub* stub, unsigned ast_id) {
+void MacroAssembler::CallStub(CodeStub* stub) {
   ASSERT(allow_stub_calls());  // Calls are not allowed in some stubs.
-  call(stub->GetCode(), RelocInfo::CODE_TARGET, ast_id);
+  call(stub->GetCode(), RelocInfo::CODE_TARGET);
 }
 
 
diff --git a/src/ia32/macro-assembler-ia32.h b/src/ia32/macro-assembler-ia32.h
index f1666ba..6909272 100644
--- a/src/ia32/macro-assembler-ia32.h
+++ b/src/ia32/macro-assembler-ia32.h
@@ -452,7 +452,7 @@
   // Runtime calls
 
   // Call a code stub.  Generate the code if necessary.
-  void CallStub(CodeStub* stub, unsigned ast_id = kNoASTId);
+  void CallStub(CodeStub* stub);
 
   // Call a code stub and return the code object called.  Try to generate
   // the code if necessary.  Do not perform a GC but instead return a retry
diff --git a/src/type-info.cc b/src/type-info.cc
index 02f69d0..1940601 100644
--- a/src/type-info.cc
+++ b/src/type-info.cc
@@ -69,8 +69,8 @@
 }
 
 
-Handle<Object> TypeFeedbackOracle::GetInfo(unsigned ast_id) {
-  int entry = dictionary_->FindEntry(ast_id);
+Handle<Object> TypeFeedbackOracle::GetInfo(int pos) {
+  int entry = dictionary_->FindEntry(pos);
   return entry != NumberDictionary::kNotFound
       ? Handle<Object>(dictionary_->ValueAt(entry))
       : Isolate::Current()->factory()->undefined_value();
@@ -78,7 +78,7 @@
 
 
 bool TypeFeedbackOracle::LoadIsMonomorphic(Property* expr) {
-  Handle<Object> map_or_code(GetInfo(expr->id()));
+  Handle<Object> map_or_code(GetInfo(expr->position()));
   if (map_or_code->IsMap()) return true;
   if (map_or_code->IsCode()) {
     Handle<Code> code(Code::cast(*map_or_code));
@@ -90,7 +90,7 @@
 
 
 bool TypeFeedbackOracle::StoreIsMonomorphic(Expression* expr) {
-  Handle<Object> map_or_code(GetInfo(expr->id()));
+  Handle<Object> map_or_code(GetInfo(expr->position()));
   if (map_or_code->IsMap()) return true;
   if (map_or_code->IsCode()) {
     Handle<Code> code(Code::cast(*map_or_code));
@@ -102,7 +102,7 @@
 
 
 bool TypeFeedbackOracle::CallIsMonomorphic(Call* expr) {
-  Handle<Object> value = GetInfo(expr->id());
+  Handle<Object> value = GetInfo(expr->position());
   return value->IsMap() || value->IsSmi();
 }
 
@@ -110,7 +110,7 @@
 Handle<Map> TypeFeedbackOracle::LoadMonomorphicReceiverType(Property* expr) {
   ASSERT(LoadIsMonomorphic(expr));
   Handle<Object> map_or_code(
-      Handle<HeapObject>::cast(GetInfo(expr->id())));
+      Handle<HeapObject>::cast(GetInfo(expr->position())));
   if (map_or_code->IsCode()) {
     Handle<Code> code(Code::cast(*map_or_code));
     return Handle<Map>(code->FindFirstMap());
@@ -122,7 +122,7 @@
 Handle<Map> TypeFeedbackOracle::StoreMonomorphicReceiverType(Expression* expr) {
   ASSERT(StoreIsMonomorphic(expr));
   Handle<HeapObject> map_or_code(
-      Handle<HeapObject>::cast(GetInfo(expr->id())));
+      Handle<HeapObject>::cast(GetInfo(expr->position())));
   if (map_or_code->IsCode()) {
     Handle<Code> code(Code::cast(*map_or_code));
     return Handle<Map>(code->FindFirstMap());
@@ -134,14 +134,14 @@
 ZoneMapList* TypeFeedbackOracle::LoadReceiverTypes(Property* expr,
                                                    Handle<String> name) {
   Code::Flags flags = Code::ComputeMonomorphicFlags(Code::LOAD_IC, NORMAL);
-  return CollectReceiverTypes(expr->id(), name, flags);
+  return CollectReceiverTypes(expr->position(), name, flags);
 }
 
 
 ZoneMapList* TypeFeedbackOracle::StoreReceiverTypes(Assignment* expr,
                                                     Handle<String> name) {
   Code::Flags flags = Code::ComputeMonomorphicFlags(Code::STORE_IC, NORMAL);
-  return CollectReceiverTypes(expr->id(), name, flags);
+  return CollectReceiverTypes(expr->position(), name, flags);
 }
 
 
@@ -158,12 +158,12 @@
                                                     OWN_MAP,
                                                     NOT_IN_LOOP,
                                                     arity);
-  return CollectReceiverTypes(expr->id(), name, flags);
+  return CollectReceiverTypes(expr->position(), name, flags);
 }
 
 
 CheckType TypeFeedbackOracle::GetCallCheckType(Call* expr) {
-  Handle<Object> value = GetInfo(expr->id());
+  Handle<Object> value = GetInfo(expr->position());
   if (!value->IsSmi()) return RECEIVER_MAP_CHECK;
   CheckType check = static_cast<CheckType>(Smi::cast(*value)->value());
   ASSERT(check != RECEIVER_MAP_CHECK);
@@ -172,14 +172,14 @@
 
 ExternalArrayType TypeFeedbackOracle::GetKeyedLoadExternalArrayType(
     Property* expr) {
-  Handle<Object> stub = GetInfo(expr->id());
+  Handle<Object> stub = GetInfo(expr->position());
   ASSERT(stub->IsCode());
   return Code::cast(*stub)->external_array_type();
 }
 
 ExternalArrayType TypeFeedbackOracle::GetKeyedStoreExternalArrayType(
     Expression* expr) {
-  Handle<Object> stub = GetInfo(expr->id());
+  Handle<Object> stub = GetInfo(expr->position());
   ASSERT(stub->IsCode());
   return Code::cast(*stub)->external_array_type();
 }
@@ -207,13 +207,13 @@
 
 
 bool TypeFeedbackOracle::LoadIsBuiltin(Property* expr, Builtins::Name id) {
-  return *GetInfo(expr->id()) ==
+  return *GetInfo(expr->position()) ==
       Isolate::Current()->builtins()->builtin(id);
 }
 
 
 TypeInfo TypeFeedbackOracle::CompareType(CompareOperation* expr) {
-  Handle<Object> object = GetInfo(expr->id());
+  Handle<Object> object = GetInfo(expr->position());
   TypeInfo unknown = TypeInfo::Unknown();
   if (!object->IsCode()) return unknown;
   Handle<Code> code = Handle<Code>::cast(object);
@@ -240,7 +240,7 @@
 
 
 TypeInfo TypeFeedbackOracle::BinaryType(BinaryOperation* expr) {
-  Handle<Object> object = GetInfo(expr->id());
+  Handle<Object> object = GetInfo(expr->position());
   TypeInfo unknown = TypeInfo::Unknown();
   if (!object->IsCode()) return unknown;
   Handle<Code> code = Handle<Code>::cast(object);
@@ -289,7 +289,7 @@
 
 
 TypeInfo TypeFeedbackOracle::SwitchType(CaseClause* clause) {
-  Handle<Object> object = GetInfo(clause->label()->id());
+  Handle<Object> object = GetInfo(clause->position());
   TypeInfo unknown = TypeInfo::Unknown();
   if (!object->IsCode()) return unknown;
   Handle<Code> code = Handle<Code>::cast(object);
@@ -315,11 +315,11 @@
 }
 
 
-ZoneMapList* TypeFeedbackOracle::CollectReceiverTypes(unsigned ast_id,
+ZoneMapList* TypeFeedbackOracle::CollectReceiverTypes(int position,
                                                       Handle<String> name,
                                                       Code::Flags flags) {
   Isolate* isolate = Isolate::Current();
-  Handle<Object> object = GetInfo(ast_id);
+  Handle<Object> object = GetInfo(position);
   if (object->IsUndefined() || object->IsSmi()) return NULL;
 
   if (*object == isolate->builtins()->builtin(Builtins::kStoreIC_GlobalProxy)) {
@@ -342,9 +342,8 @@
 }
 
 
-void TypeFeedbackOracle::SetInfo(unsigned ast_id, Object* target) {
-  ASSERT(dictionary_->FindEntry(ast_id) == NumberDictionary::kNotFound);
-  MaybeObject* maybe_result = dictionary_->AtNumberPut(ast_id, target);
+void TypeFeedbackOracle::SetInfo(int position, Object* target) {
+  MaybeObject* maybe_result = dictionary_->AtNumberPut(position, target);
   USE(maybe_result);
 #ifdef DEBUG
   Object* result;
@@ -361,47 +360,53 @@
 
   const int kInitialCapacity = 16;
   List<int> code_positions(kInitialCapacity);
-  List<unsigned> ast_ids(kInitialCapacity);
-  CollectIds(*code, &code_positions, &ast_ids);
+  List<int> source_positions(kInitialCapacity);
+  CollectPositions(*code, &code_positions, &source_positions);
 
   ASSERT(dictionary_.is_null());  // Only initialize once.
   dictionary_ = isolate->factory()->NewNumberDictionary(
       code_positions.length());
 
-  const int length = code_positions.length();
-  ASSERT(ast_ids.length() == length);
+  int length = code_positions.length();
+  ASSERT(source_positions.length() == length);
   for (int i = 0; i < length; i++) {
     AssertNoAllocation no_allocation;
     RelocInfo info(code->instruction_start() + code_positions[i],
                    RelocInfo::CODE_TARGET, 0);
     Code* target = Code::GetCodeFromTargetAddress(info.target_address());
-    unsigned id = ast_ids[i];
+    int position = source_positions[i];
     InlineCacheState state = target->ic_state();
     Code::Kind kind = target->kind();
 
     if (kind == Code::TYPE_RECORDING_BINARY_OP_IC ||
         kind == Code::COMPARE_IC) {
-      SetInfo(id, target);
+      // TODO(kasperl): Avoid having multiple ICs with the same
+      // position by making sure that we have position information
+      // recorded for all binary ICs.
+      int entry = dictionary_->FindEntry(position);
+      if (entry == NumberDictionary::kNotFound) {
+        SetInfo(position, target);
+      }
     } else if (state == MONOMORPHIC) {
       if (kind == Code::KEYED_EXTERNAL_ARRAY_LOAD_IC ||
           kind == Code::KEYED_EXTERNAL_ARRAY_STORE_IC) {
-        SetInfo(id, target);
-      } else if (kind != Code::CALL_IC ||
-                 target->check_type() == RECEIVER_MAP_CHECK) {
+        SetInfo(position, target);
+      } else if (target->kind() != Code::CALL_IC ||
+          target->check_type() == RECEIVER_MAP_CHECK) {
         Map* map = target->FindFirstMap();
         if (map == NULL) {
-          SetInfo(id, target);
+          SetInfo(position, target);
         } else {
-          SetInfo(id, map);
+          SetInfo(position, map);
         }
       } else {
         ASSERT(target->kind() == Code::CALL_IC);
         CheckType check = target->check_type();
         ASSERT(check != RECEIVER_MAP_CHECK);
-        SetInfo(id,  Smi::FromInt(check));
+        SetInfo(position, Smi::FromInt(check));
       }
     } else if (state == MEGAMORPHIC) {
-      SetInfo(id, target);
+      SetInfo(position, target);
     }
   }
   // Allocate handle in the parent scope.
@@ -409,31 +414,41 @@
 }
 
 
-void TypeFeedbackOracle::CollectIds(Code* code,
-                                    List<int>* code_positions,
-                                    List<unsigned>* ast_ids) {
+void TypeFeedbackOracle::CollectPositions(Code* code,
+                                          List<int>* code_positions,
+                                          List<int>* source_positions) {
   AssertNoAllocation no_allocation;
-  int mask = RelocInfo::ModeMask(RelocInfo::CODE_TARGET_WITH_ID);
+  int position = 0;
+  // Because the ICs we use for global variables access in the full
+  // code generator do not have any meaningful positions, we avoid
+  // collecting those by filtering out contextual code targets.
+  int mask = RelocInfo::ModeMask(RelocInfo::CODE_TARGET) |
+      RelocInfo::kPositionMask;
   for (RelocIterator it(code, mask); !it.done(); it.next()) {
     RelocInfo* info = it.rinfo();
-    ASSERT(RelocInfo::IsCodeTarget(info->rmode()));
-    Code* target = Code::GetCodeFromTargetAddress(info->target_address());
-    if (target->is_inline_cache_stub()) {
-      InlineCacheState state = target->ic_state();
-      Code::Kind kind = target->kind();
-      if (kind == Code::TYPE_RECORDING_BINARY_OP_IC) {
-        if (target->type_recording_binary_op_type() ==
-            TRBinaryOpIC::GENERIC) {
-          continue;
+    RelocInfo::Mode mode = info->rmode();
+    if (RelocInfo::IsCodeTarget(mode)) {
+      Code* target = Code::GetCodeFromTargetAddress(info->target_address());
+      if (target->is_inline_cache_stub()) {
+        InlineCacheState state = target->ic_state();
+        Code::Kind kind = target->kind();
+        if (kind == Code::TYPE_RECORDING_BINARY_OP_IC) {
+          if (target->type_recording_binary_op_type() ==
+              TRBinaryOpIC::GENERIC) {
+            continue;
+          }
+        } else if (kind == Code::COMPARE_IC) {
+          if (target->compare_state() == CompareIC::GENERIC) continue;
+        } else {
+          if (state != MONOMORPHIC && state != MEGAMORPHIC) continue;
         }
-      } else if (kind == Code::COMPARE_IC) {
-        if (target->compare_state() == CompareIC::GENERIC) continue;
-      } else {
-        if (state != MONOMORPHIC && state != MEGAMORPHIC) continue;
+        code_positions->Add(
+            static_cast<int>(info->pc() - code->instruction_start()));
+        source_positions->Add(position);
       }
-      code_positions->Add(
-          static_cast<int>(info->pc() - code->instruction_start()));
-      ast_ids->Add(static_cast<unsigned>(info->data()));
+    } else {
+      ASSERT(RelocInfo::IsPosition(mode));
+      position = static_cast<int>(info->data());
     }
   }
 }
diff --git a/src/type-info.h b/src/type-info.h
index 905625a..f6e6729 100644
--- a/src/type-info.h
+++ b/src/type-info.h
@@ -36,18 +36,18 @@
 namespace internal {
 
 //         Unknown
-//           |   \____________
-//           |                |
-//      Primitive       Non-primitive
-//           |   \_______     |
-//           |           |    |
-//        Number       String |
-//         /   \         |    |
-//    Double  Integer32  |   /
-//        |      |      /   /
-//        |     Smi    /   /
-//        |      |    / __/
-//        Uninitialized.
+//           |   |
+//           |   \--------------|
+//      Primitive             Non-primitive
+//           |   \--------|     |
+//         Number      String   |
+//         /    |         |     |
+//    Double  Integer32   |    /
+//        |      |       /    /
+//        |     Smi     /    /
+//        |      |     /    /
+//        |      |    /    /
+//        Uninitialized.--/
 
 class TypeInfo {
  public:
@@ -263,21 +263,21 @@
   TypeInfo SwitchType(CaseClause* clause);
 
  private:
-  ZoneMapList* CollectReceiverTypes(unsigned ast_id,
+  ZoneMapList* CollectReceiverTypes(int position,
                                     Handle<String> name,
                                     Code::Flags flags);
 
-  void SetInfo(unsigned ast_id, Object* target);
+  void SetInfo(int position, Object* target);
 
   void PopulateMap(Handle<Code> code);
 
-  void CollectIds(Code* code,
-                  List<int>* code_positions,
-                  List<unsigned>* ast_ids);
+  void CollectPositions(Code* code,
+                        List<int>* code_positions,
+                        List<int>* source_positions);
 
   // Returns an element from the backing store. Returns undefined if
   // there is no information.
-  Handle<Object> GetInfo(unsigned ast_id);
+  Handle<Object> GetInfo(int pos);
 
   Handle<Context> global_context_;
   Handle<NumberDictionary> dictionary_;
diff --git a/src/version.cc b/src/version.cc
index bf93be1..25939c2 100644
--- a/src/version.cc
+++ b/src/version.cc
@@ -35,7 +35,7 @@
 #define MAJOR_VERSION     3
 #define MINOR_VERSION     3
 #define BUILD_NUMBER      0
-#define PATCH_LEVEL       0
+#define PATCH_LEVEL       1
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)
 #define IS_CANDIDATE_VERSION 0
diff --git a/src/x64/assembler-x64-inl.h b/src/x64/assembler-x64-inl.h
index 8db54f0..9541a58 100644
--- a/src/x64/assembler-x64-inl.h
+++ b/src/x64/assembler-x64-inl.h
@@ -61,15 +61,9 @@
 }
 
 
-void Assembler::emit_code_target(Handle<Code> target,
-                                 RelocInfo::Mode rmode,
-                                 unsigned ast_id) {
+void Assembler::emit_code_target(Handle<Code> target, RelocInfo::Mode rmode) {
   ASSERT(RelocInfo::IsCodeTarget(rmode));
-  if (rmode == RelocInfo::CODE_TARGET && ast_id != kNoASTId) {
-    RecordRelocInfo(RelocInfo::CODE_TARGET_WITH_ID, ast_id);
-  } else {
-    RecordRelocInfo(rmode);
-  }
+  RecordRelocInfo(rmode);
   int current = code_targets_.length();
   if (current > 0 && code_targets_.last().is_identical_to(target)) {
     // Optimization if we keep jumping to the same code target.
diff --git a/src/x64/assembler-x64.cc b/src/x64/assembler-x64.cc
index c5e35af..c06bc0c 100644
--- a/src/x64/assembler-x64.cc
+++ b/src/x64/assembler-x64.cc
@@ -869,14 +869,12 @@
 }
 
 
-void Assembler::call(Handle<Code> target,
-                     RelocInfo::Mode rmode,
-                     unsigned ast_id) {
+void Assembler::call(Handle<Code> target, RelocInfo::Mode rmode) {
   positions_recorder()->WriteRecordedPositions();
   EnsureSpace ensure_space(this);
   // 1110 1000 #32-bit disp.
   emit(0xE8);
-  emit_code_target(target, rmode, ast_id);
+  emit_code_target(target, rmode);
 }
 
 
diff --git a/src/x64/assembler-x64.h b/src/x64/assembler-x64.h
index 32db4b8..8a9938b 100644
--- a/src/x64/assembler-x64.h
+++ b/src/x64/assembler-x64.h
@@ -1183,9 +1183,7 @@
   // Calls
   // Call near relative 32-bit displacement, relative to next instruction.
   void call(Label* L);
-  void call(Handle<Code> target,
-            RelocInfo::Mode rmode,
-            unsigned ast_id = kNoASTId);
+  void call(Handle<Code> target, RelocInfo::Mode rmode);
 
   // Calls directly to the given address using a relative offset.
   // Should only ever be used in Code objects for calls within the
@@ -1429,9 +1427,7 @@
   inline void emitl(uint32_t x);
   inline void emitq(uint64_t x, RelocInfo::Mode rmode);
   inline void emitw(uint16_t x);
-  inline void emit_code_target(Handle<Code> target,
-                               RelocInfo::Mode rmode,
-                               unsigned ast_id = kNoASTId);
+  inline void emit_code_target(Handle<Code> target, RelocInfo::Mode rmode);
   void emit(Immediate x) { emitl(x.value_); }
 
   // Emits a REX prefix that encodes a 64-bit operand size and
diff --git a/src/x64/full-codegen-x64.cc b/src/x64/full-codegen-x64.cc
index 8d02f88..d5fb7da 100644
--- a/src/x64/full-codegen-x64.cc
+++ b/src/x64/full-codegen-x64.cc
@@ -44,12 +44,6 @@
 #define __ ACCESS_MASM(masm_)
 
 
-static unsigned GetPropertyId(Property* property) {
-  if (property->is_synthetic()) return AstNode::kNoNumber;
-  return property->id();
-}
-
-
 class JumpPatchSite BASE_EMBEDDED {
  public:
   explicit JumpPatchSite(MacroAssembler* masm)
@@ -749,7 +743,7 @@
       Handle<Code> ic = is_strict_mode()
           ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
           : isolate()->builtins()->KeyedStoreIC_Initialize();
-      EmitCallIC(ic, RelocInfo::CODE_TARGET, GetPropertyId(prop));
+      EmitCallIC(ic, RelocInfo::CODE_TARGET);
     }
   }
 }
@@ -822,7 +816,7 @@
     // Record position before stub call for type feedback.
     SetSourcePosition(clause->position());
     Handle<Code> ic = CompareIC::GetUninitialized(Token::EQ_STRICT);
-    EmitCallIC(ic, &patch_site, clause->label()->id());
+    EmitCallIC(ic, &patch_site);
 
     __ testq(rax, rax);
     __ j(not_equal, &next_test);
@@ -1131,7 +1125,7 @@
   RelocInfo::Mode mode = (typeof_state == INSIDE_TYPEOF)
       ? RelocInfo::CODE_TARGET
       : RelocInfo::CODE_TARGET_CONTEXT;
-  EmitCallIC(ic, mode, AstNode::kNoNumber);
+  EmitCallIC(ic, mode);
 }
 
 
@@ -1212,7 +1206,7 @@
           __ Move(rax, key_literal->handle());
           Handle<Code> ic =
               isolate()->builtins()->KeyedLoadIC_Initialize();
-          EmitCallIC(ic, RelocInfo::CODE_TARGET, GetPropertyId(property));
+          EmitCallIC(ic, RelocInfo::CODE_TARGET);
           __ jmp(done);
         }
       }
@@ -1235,7 +1229,7 @@
     __ Move(rcx, var->name());
     __ movq(rax, GlobalObjectOperand());
     Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize();
-    EmitCallIC(ic, RelocInfo::CODE_TARGET_CONTEXT, AstNode::kNoNumber);
+    EmitCallIC(ic, RelocInfo::CODE_TARGET_CONTEXT);
     context()->Plug(rax);
 
   } else if (slot != NULL && slot->type() == Slot::LOOKUP) {
@@ -1298,7 +1292,7 @@
 
     // Do a keyed property load.
     Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize();
-    EmitCallIC(ic, RelocInfo::CODE_TARGET, GetPropertyId(property));
+    EmitCallIC(ic, RelocInfo::CODE_TARGET);
     context()->Plug(rax);
   }
 }
@@ -1409,7 +1403,7 @@
           __ movq(rdx, Operand(rsp, 0));
           if (property->emit_store()) {
             Handle<Code> ic = isolate()->builtins()->StoreIC_Initialize();
-            EmitCallIC(ic, RelocInfo::CODE_TARGET, key->id());
+            EmitCallIC(ic, RelocInfo::CODE_TARGET);
             PrepareForBailoutForId(key->id(), NO_REGISTERS);
           }
           break;
@@ -1612,13 +1606,13 @@
     SetSourcePosition(expr->position() + 1);
     AccumulatorValueContext context(this);
     if (ShouldInlineSmiCase(op)) {
-      EmitInlineSmiBinaryOp(expr->binary_operation(),
+      EmitInlineSmiBinaryOp(expr,
                             op,
                             mode,
                             expr->target(),
                             expr->value());
     } else {
-      EmitBinaryOp(expr->binary_operation(), op, mode);
+      EmitBinaryOp(op, mode);
     }
     // Deoptimization point in case the binary operation may have side effects.
     PrepareForBailout(expr->binary_operation(), TOS_REG);
@@ -1652,18 +1646,18 @@
   Literal* key = prop->key()->AsLiteral();
   __ Move(rcx, key->handle());
   Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize();
-  EmitCallIC(ic, RelocInfo::CODE_TARGET, GetPropertyId(prop));
+  EmitCallIC(ic, RelocInfo::CODE_TARGET);
 }
 
 
 void FullCodeGenerator::EmitKeyedPropertyLoad(Property* prop) {
   SetSourcePosition(prop->position());
   Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize();
-  EmitCallIC(ic, RelocInfo::CODE_TARGET, GetPropertyId(prop));
+  EmitCallIC(ic, RelocInfo::CODE_TARGET);
 }
 
 
-void FullCodeGenerator::EmitInlineSmiBinaryOp(BinaryOperation* expr,
+void FullCodeGenerator::EmitInlineSmiBinaryOp(Expression* expr,
                                               Token::Value op,
                                               OverwriteMode mode,
                                               Expression* left,
@@ -1681,7 +1675,7 @@
   __ bind(&stub_call);
   __ movq(rax, rcx);
   TypeRecordingBinaryOpStub stub(op, mode);
-  EmitCallIC(stub.GetCode(), &patch_site, expr->id());
+  EmitCallIC(stub.GetCode(), &patch_site);
   __ jmp(&done);
 
   __ bind(&smi_case);
@@ -1723,13 +1717,11 @@
 }
 
 
-void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr,
-                                     Token::Value op,
+void FullCodeGenerator::EmitBinaryOp(Token::Value op,
                                      OverwriteMode mode) {
   __ pop(rdx);
   TypeRecordingBinaryOpStub stub(op, mode);
-  // NULL signals no inlined smi code.
-  EmitCallIC(stub.GetCode(), NULL, expr->id());
+  EmitCallIC(stub.GetCode(), NULL);  // NULL signals no inlined smi code.
   context()->Plug(rax);
 }
 
@@ -1769,7 +1761,7 @@
       Handle<Code> ic = is_strict_mode()
           ? isolate()->builtins()->StoreIC_Initialize_Strict()
           : isolate()->builtins()->StoreIC_Initialize();
-      EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+      EmitCallIC(ic, RelocInfo::CODE_TARGET);
       break;
     }
     case KEYED_PROPERTY: {
@@ -1792,7 +1784,7 @@
       Handle<Code> ic = is_strict_mode()
           ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
           : isolate()->builtins()->KeyedStoreIC_Initialize();
-      EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+      EmitCallIC(ic, RelocInfo::CODE_TARGET);
       break;
     }
   }
@@ -1818,7 +1810,7 @@
     Handle<Code> ic = is_strict_mode()
         ? isolate()->builtins()->StoreIC_Initialize_Strict()
         : isolate()->builtins()->StoreIC_Initialize();
-    EmitCallIC(ic, RelocInfo::CODE_TARGET_CONTEXT, AstNode::kNoNumber);
+    EmitCallIC(ic, RelocInfo::CODE_TARGET_CONTEXT);
 
   } else if (op == Token::INIT_CONST) {
     // Like var declarations, const declarations are hoisted to function
@@ -1921,7 +1913,7 @@
   Handle<Code> ic = is_strict_mode()
       ? isolate()->builtins()->StoreIC_Initialize_Strict()
       : isolate()->builtins()->StoreIC_Initialize();
-  EmitCallIC(ic, RelocInfo::CODE_TARGET, expr->id());
+  EmitCallIC(ic, RelocInfo::CODE_TARGET);
 
   // If the assignment ends an initialization block, revert to fast case.
   if (expr->ends_initialization_block()) {
@@ -1961,7 +1953,7 @@
   Handle<Code> ic = is_strict_mode()
       ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
       : isolate()->builtins()->KeyedStoreIC_Initialize();
-  EmitCallIC(ic, RelocInfo::CODE_TARGET, expr->id());
+  EmitCallIC(ic, RelocInfo::CODE_TARGET);
 
   // If the assignment ends an initialization block, revert to fast case.
   if (expr->ends_initialization_block()) {
@@ -2013,7 +2005,7 @@
   InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP;
   Handle<Code> ic =
       ISOLATE->stub_cache()->ComputeCallInitialize(arg_count, in_loop);
-  EmitCallIC(ic, mode, expr->id());
+  EmitCallIC(ic, mode);
   RecordJSReturnSite(expr);
   // Restore context register.
   __ movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset));
@@ -2048,7 +2040,7 @@
   Handle<Code> ic =
       ISOLATE->stub_cache()->ComputeKeyedCallInitialize(arg_count, in_loop);
   __ movq(rcx, Operand(rsp, (arg_count + 1) * kPointerSize));  // Key.
-  EmitCallIC(ic, mode, expr->id());
+  EmitCallIC(ic, mode);
   RecordJSReturnSite(expr);
   // Restore context register.
   __ movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset));
@@ -2240,7 +2232,7 @@
         SetSourcePosition(prop->position());
 
         Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize();
-        EmitCallIC(ic, RelocInfo::CODE_TARGET, GetPropertyId(prop));
+        EmitCallIC(ic, RelocInfo::CODE_TARGET);
         // Push result (function).
         __ push(rax);
         // Push Global receiver.
@@ -3600,7 +3592,7 @@
     InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP;
     Handle<Code> ic =
         ISOLATE->stub_cache()->ComputeCallInitialize(arg_count, in_loop);
-    EmitCallIC(ic, RelocInfo::CODE_TARGET, expr->id());
+    EmitCallIC(ic, RelocInfo::CODE_TARGET);
     // Restore context register.
     __ movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset));
   } else {
@@ -3885,7 +3877,7 @@
     __ movq(rdx, rax);
     __ Move(rax, Smi::FromInt(1));
   }
-  EmitCallIC(stub.GetCode(), &patch_site, expr->CountId());
+  EmitCallIC(stub.GetCode(), &patch_site);
   __ bind(&done);
 
   // Store the value returned in rax.
@@ -3918,7 +3910,7 @@
       Handle<Code> ic = is_strict_mode()
           ? isolate()->builtins()->StoreIC_Initialize_Strict()
           : isolate()->builtins()->StoreIC_Initialize();
-      EmitCallIC(ic, RelocInfo::CODE_TARGET, expr->id());
+      EmitCallIC(ic, RelocInfo::CODE_TARGET);
       PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
@@ -3935,7 +3927,7 @@
       Handle<Code> ic = is_strict_mode()
           ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
           : isolate()->builtins()->KeyedStoreIC_Initialize();
-      EmitCallIC(ic, RelocInfo::CODE_TARGET, expr->id());
+      EmitCallIC(ic, RelocInfo::CODE_TARGET);
       PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
@@ -3962,7 +3954,7 @@
     Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize();
     // Use a regular load, not a contextual load, to avoid a reference
     // error.
-    EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+    EmitCallIC(ic, RelocInfo::CODE_TARGET);
     PrepareForBailout(expr, TOS_REG);
     context()->Plug(rax);
   } else if (proxy != NULL &&
@@ -4160,7 +4152,7 @@
       // Record position and call the compare IC.
       SetSourcePosition(expr->position());
       Handle<Code> ic = CompareIC::GetUninitialized(op);
-      EmitCallIC(ic, &patch_site, expr->id());
+      EmitCallIC(ic, &patch_site);
 
       PrepareForBailoutBeforeSplit(TOS_REG, true, if_true, if_false);
       __ testq(rax, rax);
@@ -4220,9 +4212,7 @@
 }
 
 
-void FullCodeGenerator::EmitCallIC(Handle<Code> ic,
-                                   RelocInfo::Mode mode,
-                                   unsigned ast_id) {
+void FullCodeGenerator::EmitCallIC(Handle<Code> ic, RelocInfo::Mode mode) {
   ASSERT(mode == RelocInfo::CODE_TARGET ||
          mode == RelocInfo::CODE_TARGET_CONTEXT);
   Counters* counters = isolate()->counters();
@@ -4241,13 +4231,11 @@
     default:
       break;
   }
-  __ call(ic, mode, ast_id);
+  __ call(ic, mode);
 }
 
 
-void FullCodeGenerator::EmitCallIC(Handle<Code> ic,
-                                   JumpPatchSite* patch_site,
-                                   unsigned ast_id) {
+void FullCodeGenerator::EmitCallIC(Handle<Code> ic, JumpPatchSite* patch_site) {
   Counters* counters = isolate()->counters();
   switch (ic->kind()) {
     case Code::LOAD_IC:
@@ -4264,7 +4252,7 @@
     default:
       break;
   }
-  __ call(ic, RelocInfo::CODE_TARGET, ast_id);
+  __ call(ic, RelocInfo::CODE_TARGET);
   if (patch_site != NULL && patch_site->is_bound()) {
     patch_site->EmitPatchInfo();
   } else {
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index 24f2fef..3394206 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -425,9 +425,9 @@
 }
 
 
-void MacroAssembler::CallStub(CodeStub* stub, unsigned ast_id) {
+void MacroAssembler::CallStub(CodeStub* stub) {
   ASSERT(allow_stub_calls());  // calls are not allowed in some stubs
-  Call(stub->GetCode(), RelocInfo::CODE_TARGET, ast_id);
+  Call(stub->GetCode(), RelocInfo::CODE_TARGET);
 }
 
 
@@ -1610,14 +1610,12 @@
 }
 
 
-void MacroAssembler::Call(Handle<Code> code_object,
-                          RelocInfo::Mode rmode,
-                          unsigned ast_id) {
+void MacroAssembler::Call(Handle<Code> code_object, RelocInfo::Mode rmode) {
 #ifdef DEBUG
   int end_position = pc_offset() + CallSize(code_object);
 #endif
   ASSERT(RelocInfo::IsCodeTarget(rmode));
-  call(code_object, rmode, ast_id);
+  call(code_object, rmode);
 #ifdef DEBUG
   CHECK_EQ(end_position, pc_offset());
 #endif
diff --git a/src/x64/macro-assembler-x64.h b/src/x64/macro-assembler-x64.h
index 8499edf..4c17720 100644
--- a/src/x64/macro-assembler-x64.h
+++ b/src/x64/macro-assembler-x64.h
@@ -692,9 +692,7 @@
 
   void Call(Address destination, RelocInfo::Mode rmode);
   void Call(ExternalReference ext);
-  void Call(Handle<Code> code_object,
-            RelocInfo::Mode rmode,
-            unsigned ast_id = kNoASTId);
+  void Call(Handle<Code> code_object, RelocInfo::Mode rmode);
 
   // The size of the code generated for different call instructions.
   int CallSize(Address destination, RelocInfo::Mode rmode) {
@@ -934,7 +932,7 @@
   // Runtime calls
 
   // Call a code stub.
-  void CallStub(CodeStub* stub, unsigned ast_id = kNoASTId);
+  void CallStub(CodeStub* stub);
 
   // Call a code stub and return the code object called.  Try to generate
   // the code if necessary.  Do not perform a GC but instead return a retry
diff --git a/test/cctest/test-debug.cc b/test/cctest/test-debug.cc
index 9847c89..b81129e 100644
--- a/test/cctest/test-debug.cc
+++ b/test/cctest/test-debug.cc
@@ -501,11 +501,7 @@
   CHECK(Debug::HasDebugInfo(shared));
   TestBreakLocationIterator it1(Debug::GetDebugInfo(shared));
   it1.FindBreakLocationFromPosition(position);
-  v8::internal::RelocInfo::Mode actual_mode = it1.it()->rinfo()->rmode();
-  if (actual_mode == v8::internal::RelocInfo::CODE_TARGET_WITH_ID) {
-    actual_mode = v8::internal::RelocInfo::CODE_TARGET;
-  }
-  CHECK_EQ(mode, actual_mode);
+  CHECK_EQ(mode, it1.it()->rinfo()->rmode());
   if (mode != v8::internal::RelocInfo::JS_RETURN) {
     CHECK_EQ(debug_break,
         Code::GetCodeFromTargetAddress(it1.it()->rinfo()->target_address()));
@@ -520,11 +516,7 @@
   CHECK(debug->EnsureDebugInfo(shared));
   TestBreakLocationIterator it2(Debug::GetDebugInfo(shared));
   it2.FindBreakLocationFromPosition(position);
-  actual_mode = it2.it()->rinfo()->rmode();
-  if (actual_mode == v8::internal::RelocInfo::CODE_TARGET_WITH_ID) {
-    actual_mode = v8::internal::RelocInfo::CODE_TARGET;
-  }
-  CHECK_EQ(mode, actual_mode);
+  CHECK_EQ(mode, it2.it()->rinfo()->rmode());
   if (mode == v8::internal::RelocInfo::JS_RETURN) {
     CHECK(!Debug::IsDebugBreakAtReturn(it2.it()->rinfo()));
   }