Use the HandlerFrontendHeader in most call compilers.

src/x64/stub-cache-x64.cc

 // Copyright 2012 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:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1531 matching lines @@
 
 
 void CallStubCompiler::GenerateNameCheck(Handle<Name> name, Label* miss) {
   if (kind_ == Code::KEYED_CALL_IC) {
     __ Cmp(rcx, name);
     __ j(not_equal, miss);
   }
 }
 
 
-void CallStubCompiler::GenerateGlobalReceiverCheck(Handle<JSObject> object,
-                                                   Handle<JSObject> holder,
-                                                   Handle<Name> name,
-                                                   Label* miss) {
-  ASSERT(holder->IsGlobalObject());
-
-  StackArgumentsAccessor args(rsp, arguments());
-  __ movq(rdx, args.GetReceiverOperand());
-
-
-  // Check that the maps haven't changed.
-  __ JumpIfSmi(rdx, miss);
-  CheckPrototypes(IC::CurrentTypeOf(object, isolate()), rdx, holder,
-                  rbx, rax, rdi, name, miss);
-}
-
-
 void CallStubCompiler::GenerateLoadFunctionFromCell(
     Handle<Cell> cell,
     Handle<JSFunction> function,
     Label* miss) {
   // Get the value from the cell.
   __ Move(rdi, cell);
   __ movq(rdi, FieldOperand(rdi, Cell::kValueOffset));
 
   // Check that the cell contains the same function.
   if (heap()->InNewSpace(*function)) {
@@ skipping 22 matching lines @@
                                                kind_,
                                                extra_state_);
   __ Jump(code, RelocInfo::CODE_TARGET);
 }
 
 
 Handle<Code> CallStubCompiler::CompileCallField(Handle<JSObject> object,
                                                 Handle<JSObject> holder,
                                                 PropertyIndex index,
                                                 Handle<Name> name) {
-  // ----------- S t a t e -------------
-  // rcx                 : function name
-  // rsp[0]              : return address
-  // rsp[8]              : argument argc
-  // rsp[16]             : argument argc - 1
-  // ...
-  // rsp[argc * 8]       : argument 1
-  // rsp[(argc + 1) * 8] : argument 0 = receiver
-  // -----------------------------------
   Label miss;
 
-  GenerateNameCheck(name, &miss);
-
-  StackArgumentsAccessor args(rsp, arguments());
-  __ movq(rdx, args.GetReceiverOperand());
-
-  // Check that the receiver isn't a smi.
-  __ JumpIfSmi(rdx, &miss);
-
-  // Do the right check and compute the holder register.
-  Register reg = CheckPrototypes(IC::CurrentTypeOf(object, isolate()), rdx,
-                                 holder, rbx, rax, rdi, name, &miss);
+  Register reg = HandlerFrontendHeader(
+      object, holder, name, RECEIVER_MAP_CHECK, &miss);
 
   GenerateFastPropertyLoad(masm(), rdi, reg, index.is_inobject(holder),
                            index.translate(holder), Representation::Tagged());
 
   // Check that the function really is a function.
   __ JumpIfSmi(rdi, &miss);
   __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rbx);
   __ j(not_equal, &miss);
 
-  // Patch the receiver on the stack with the global proxy if
-  // necessary.
-  if (object->IsGlobalObject()) {
-    __ movq(rdx, FieldOperand(rdx, GlobalObject::kGlobalReceiverOffset));
-    __ movq(args.GetReceiverOperand(), rdx);
-  }
+  PatchGlobalProxy(object);
 
   // Invoke the function.
   CallKind call_kind = CallICBase::Contextual::decode(extra_state_)
       ? CALL_AS_FUNCTION
       : CALL_AS_METHOD;
   __ InvokeFunction(rdi, arguments(), JUMP_FUNCTION,
                     NullCallWrapper(), call_kind);
 
-  // Handle call cache miss.
-  __ bind(&miss);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&miss);
 
   // Return the generated code.
   return GetCode(Code::FAST, name);
 }
 
 
 Handle<Code> CallStubCompiler::CompileArrayCodeCall(
     Handle<Object> object,
     Handle<JSObject> holder,
     Handle<Cell> cell,
     Handle<JSFunction> function,
     Handle<String> name,
     Code::StubType type) {
   Label miss;
 
-  // Check that function is still array
-  const int argc = arguments().immediate();
-  StackArgumentsAccessor args(rsp, argc);
-  GenerateNameCheck(name, &miss);
-
-  if (cell.is_null()) {
-    __ movq(rdx, args.GetReceiverOperand());
-
-    // Check that the receiver isn't a smi.
-    __ JumpIfSmi(rdx, &miss);
-    CheckPrototypes(IC::CurrentTypeOf(object, isolate()), rdx, holder,
-                    rbx, rax, rdi, name, &miss);
-  } else {
+  HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
+  if (!cell.is_null()) {
     ASSERT(cell->value() == *function);
-    GenerateGlobalReceiverCheck(Handle<JSObject>::cast(object), holder, name,
-                                &miss);
     GenerateLoadFunctionFromCell(cell, function, &miss);
   }
 
   Handle<AllocationSite> site = isolate()->factory()->NewAllocationSite();
   site->SetElementsKind(GetInitialFastElementsKind());
   Handle<Cell> site_feedback_cell = isolate()->factory()->NewCell(site);
+  const int argc = arguments().immediate();
   __ movq(rax, Immediate(argc));
   __ Move(rbx, site_feedback_cell);
   __ Move(rdi, function);
 
   ArrayConstructorStub stub(isolate());
   __ TailCallStub(&stub);
 
-  __ bind(&miss);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&miss);
 
   // Return the generated code.
   return GetCode(type, name);
 }
 
 
 Handle<Code> CallStubCompiler::CompileArrayPushCall(
     Handle<Object> object,
     Handle<JSObject> holder,
     Handle<Cell> cell,
     Handle<JSFunction> function,
     Handle<String> name,
     Code::StubType type) {
   // ----------- S t a t e -------------
   //  -- rcx                 : name
   //  -- rsp[0]              : return address
   //  -- rsp[(argc - n) * 8] : arg[n] (zero-based)
   //  -- ...
   //  -- rsp[(argc + 1) * 8] : receiver
   // -----------------------------------
 
   // If object is not an array or is observed, bail out to regular call.
   if (!object->IsJSArray() ||
       !cell.is_null() ||
       Handle<JSArray>::cast(object)->map()->is_observed()) {
     return Handle<Code>::null();
   }
 
   Label miss;
-  GenerateNameCheck(name, &miss);
+
+  HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
 
   const int argc = arguments().immediate();
   StackArgumentsAccessor args(rsp, argc);
-  __ movq(rdx, args.GetReceiverOperand());
-
-  // Check that the receiver isn't a smi.
-  __ JumpIfSmi(rdx, &miss);
-
-  CheckPrototypes(IC::CurrentTypeOf(object, isolate()), rdx, holder,
-                  rbx, rax, rdi, name, &miss);
-
   if (argc == 0) {
     // Noop, return the length.
     __ movq(rax, FieldOperand(rdx, JSArray::kLengthOffset));
     __ ret((argc + 1) * kPointerSize);
   } else {
     Label call_builtin;
 
     if (argc == 1) {  // Otherwise fall through to call builtin.
       Label attempt_to_grow_elements, with_write_barrier, check_double;
 
@@ skipping 192 matching lines @@
       __ ret((argc + 1) * kPointerSize);
     }
 
     __ bind(&call_builtin);
     __ TailCallExternalReference(ExternalReference(Builtins::c_ArrayPush,
                                                    isolate()),
                                  argc + 1,
                                  1);
   }
 
-  __ bind(&miss);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&miss);
 
   // Return the generated code.
   return GetCode(type, name);
 }
 
 
 Handle<Code> CallStubCompiler::CompileArrayPopCall(
     Handle<Object> object,
     Handle<JSObject> holder,
     Handle<Cell> cell,
     Handle<JSFunction> function,
     Handle<String> name,
     Code::StubType type) {
-  // ----------- S t a t e -------------
-  //  -- rcx                 : name
-  //  -- rsp[0]              : return address
-  //  -- rsp[(argc - n) * 8] : arg[n] (zero-based)
-  //  -- ...
-  //  -- rsp[(argc + 1) * 8] : receiver
-  // -----------------------------------
-
   // If object is not an array or is observed, bail out to regular call.
   if (!object->IsJSArray() ||
       !cell.is_null() ||
       Handle<JSArray>::cast(object)->map()->is_observed()) {
     return Handle<Code>::null();
   }
 
   Label miss, return_undefined, call_builtin;
-  GenerateNameCheck(name, &miss);
 
-  const int argc = arguments().immediate();
-  StackArgumentsAccessor args(rsp, argc);
-  __ movq(rdx, args.GetReceiverOperand());
-
-  // Check that the receiver isn't a smi.
-  __ JumpIfSmi(rdx, &miss);
-
-  CheckPrototypes(IC::CurrentTypeOf(object, isolate()), rdx, holder,
-                  rbx, rax, rdi, name, &miss);
+  HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
 
   // Get the elements array of the object.
   __ movq(rbx, FieldOperand(rdx, JSArray::kElementsOffset));
 
   // Check that the elements are in fast mode and writable.
   __ CompareRoot(FieldOperand(rbx, HeapObject::kMapOffset),
                  Heap::kFixedArrayMapRootIndex);
   __ j(not_equal, &call_builtin);
 
   // Get the array's length into rcx and calculate new length.
@@ skipping 12 matching lines @@
   __ j(equal, &call_builtin);
 
   // Set the array's length.
   __ Integer32ToSmiField(FieldOperand(rdx, JSArray::kLengthOffset), rcx);
 
   // Fill with the hole and return original value.
   __ movq(FieldOperand(rbx,
                        rcx, times_pointer_size,
                        FixedArray::kHeaderSize),
           r9);
+  const int argc = arguments().immediate();
   __ ret((argc + 1) * kPointerSize);
 
   __ bind(&return_undefined);
   __ LoadRoot(rax, Heap::kUndefinedValueRootIndex);
   __ ret((argc + 1) * kPointerSize);
 
   __ bind(&call_builtin);
   __ TailCallExternalReference(
       ExternalReference(Builtins::c_ArrayPop, isolate()),
       argc + 1,
       1);
 
-  __ bind(&miss);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&miss);
 
   // Return the generated code.
   return GetCode(type, name);
 }
 
 
 Handle<Code> CallStubCompiler::CompileStringCharCodeAtCall(
     Handle<Object> object,
     Handle<JSObject> holder,
     Handle<Cell> cell,
     Handle<JSFunction> function,
     Handle<String> name,
     Code::StubType type) {
-  // ----------- S t a t e -------------
-  //  -- rcx                 : function name
-  //  -- rsp[0]              : return address
-  //  -- rsp[(argc - n) * 8] : arg[n] (zero-based)
-  //  -- ...
-  //  -- rsp[(argc + 1) * 8] : receiver
-  // -----------------------------------
-
   // If object is not a string, bail out to regular call.
   if (!object->IsString() || !cell.is_null()) return Handle<Code>::null();
 
-  const int argc = arguments().immediate();
-  StackArgumentsAccessor args(rsp, argc);
-
   Label miss;
   Label name_miss;
   Label index_out_of_range;
   Label* index_out_of_range_label = &index_out_of_range;
   if (kind_ == Code::CALL_IC &&
       (CallICBase::StringStubState::decode(extra_state_) ==
        DEFAULT_STRING_STUB)) {
     index_out_of_range_label = &miss;
   }
-  GenerateNameCheck(name, &name_miss);
 
-  // Check that the maps starting from the prototype haven't changed.
-  GenerateDirectLoadGlobalFunctionPrototype(masm(),
-                                            Context::STRING_FUNCTION_INDEX,
-                                            rax,
-                                            &miss);
-  ASSERT(!object.is_identical_to(holder));
-  Handle<Object> prototype(object->GetPrototype(isolate()), isolate());
-  CheckPrototypes(
-      IC::CurrentTypeOf(prototype, isolate()),
-      rax, holder, rbx, rdx, rdi, name, &miss);
+  HandlerFrontendHeader(object, holder, name, STRING_CHECK, &name_miss);
 
   Register receiver = rbx;
   Register index = rdi;
   Register result = rax;
+  const int argc = arguments().immediate();
+  StackArgumentsAccessor args(rsp, argc);
+
   __ movq(receiver, args.GetReceiverOperand());
   if (argc > 0) {
     __ movq(index, args.GetArgumentOperand(1));
   } else {
     __ LoadRoot(index, Heap::kUndefinedValueRootIndex);
   }
 
   StringCharCodeAtGenerator generator(receiver,
                                       index,
                                       result,
@@ skipping 24 matching lines @@
 }
 
 
 Handle<Code> CallStubCompiler::CompileStringCharAtCall(
     Handle<Object> object,
     Handle<JSObject> holder,
     Handle<Cell> cell,
     Handle<JSFunction> function,
     Handle<String> name,
     Code::StubType type) {
-  // ----------- S t a t e -------------
-  //  -- rcx                 : function name
-  //  -- rsp[0]              : return address
-  //  -- rsp[(argc - n) * 8] : arg[n] (zero-based)
-  //  -- ...
-  //  -- rsp[(argc + 1) * 8] : receiver
-  // -----------------------------------
-
   // If object is not a string, bail out to regular call.
   if (!object->IsString() || !cell.is_null()) return Handle<Code>::null();
 
   const int argc = arguments().immediate();
   StackArgumentsAccessor args(rsp, argc);
 
   Label miss;
   Label name_miss;
   Label index_out_of_range;
   Label* index_out_of_range_label = &index_out_of_range;
   if (kind_ == Code::CALL_IC &&
       (CallICBase::StringStubState::decode(extra_state_) ==
        DEFAULT_STRING_STUB)) {
     index_out_of_range_label = &miss;
   }
-  GenerateNameCheck(name, &name_miss);
 
-  // Check that the maps starting from the prototype haven't changed.
-  GenerateDirectLoadGlobalFunctionPrototype(masm(),
-                                            Context::STRING_FUNCTION_INDEX,
-                                            rax,
-                                            &miss);
-  ASSERT(!object.is_identical_to(holder));
-  Handle<Object> prototype(object->GetPrototype(isolate()), isolate());
-  CheckPrototypes(
-      IC::CurrentTypeOf(prototype, isolate()),
-      rax, holder, rbx, rdx, rdi, name, &miss);
+  HandlerFrontendHeader(object, holder, name, STRING_CHECK, &name_miss);
 
   Register receiver = rax;
   Register index = rdi;
   Register scratch = rdx;
   Register result = rax;
   __ movq(receiver, args.GetReceiverOperand());
   if (argc > 0) {
     __ movq(index, args.GetArgumentOperand(1));
   } else {
     __ LoadRoot(index, Heap::kUndefinedValueRootIndex);
@@ skipping 29 matching lines @@
 }
 
 
 Handle<Code> CallStubCompiler::CompileStringFromCharCodeCall(
     Handle<Object> object,
     Handle<JSObject> holder,
     Handle<Cell> cell,
     Handle<JSFunction> function,
     Handle<String> name,
     Code::StubType type) {
-  // ----------- S t a t e -------------
-  //  -- rcx                 : function name
-  //  -- rsp[0]              : return address
-  //  -- rsp[(argc - n) * 8] : arg[n] (zero-based)
-  //  -- ...
-  //  -- rsp[(argc + 1) * 8] : receiver
-  // -----------------------------------
-
   // If the object is not a JSObject or we got an unexpected number of
   // arguments, bail out to the regular call.
   const int argc = arguments().immediate();
   StackArgumentsAccessor args(rsp, argc);
   if (!object->IsJSObject() || argc != 1) return Handle<Code>::null();
 
   Label miss;
-  GenerateNameCheck(name, &miss);
 
-  if (cell.is_null()) {
-    __ movq(rdx, args.GetReceiverOperand());
-    __ JumpIfSmi(rdx, &miss);
-    CheckPrototypes(IC::CurrentTypeOf(object, isolate()), rdx, holder,
-                    rbx, rax, rdi, name, &miss);
-  } else {
+  HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
+  if (!cell.is_null()) {
     ASSERT(cell->value() == *function);
-    GenerateGlobalReceiverCheck(Handle<JSObject>::cast(object), holder, name,
-                                &miss);
     GenerateLoadFunctionFromCell(cell, function, &miss);
   }
 
   // Load the char code argument.
   Register code = rbx;
   __ movq(code, args.GetArgumentOperand(1));
 
   // Check the code is a smi.
   Label slow;
   __ JumpIfNotSmi(code, &slow);
@@ skipping 11 matching lines @@
   // Tail call the full function. We do not have to patch the receiver
   // because the function makes no use of it.
   __ bind(&slow);
   CallKind call_kind = CallICBase::Contextual::decode(extra_state_)
       ? CALL_AS_FUNCTION
       : CALL_AS_METHOD;
   ParameterCount expected(function);
   __ InvokeFunction(function, expected, arguments(),
                     JUMP_FUNCTION, NullCallWrapper(), call_kind);
 
-  __ bind(&miss);
-  // rcx: function name.
-  GenerateMissBranch();
+  HandlerFrontendFooter(&miss);
 
   // Return the generated code.
   return GetCode(type, name);
 }
 
 
 Handle<Code> CallStubCompiler::CompileMathFloorCall(
     Handle<Object> object,
     Handle<JSObject> holder,
     Handle<Cell> cell,
     Handle<JSFunction> function,
     Handle<String> name,
     Code::StubType type) {
-  // ----------- S t a t e -------------
-  //  -- rcx                 : name
-  //  -- rsp[0]              : return address
-  //  -- rsp[(argc - n) * 4] : arg[n] (zero-based)
-  //  -- ...
-  //  -- rsp[(argc + 1) * 4] : receiver
-  // -----------------------------------
   const int argc = arguments().immediate();
   StackArgumentsAccessor args(rsp, argc);
 
   // If the object is not a JSObject or we got an unexpected number of
   // arguments, bail out to the regular call.
   if (!object->IsJSObject() || argc != 1) {
     return Handle<Code>::null();
   }
 
-  Label miss;
-  GenerateNameCheck(name, &miss);
+  Label miss, slow;
 
-  if (cell.is_null()) {
-    __ movq(rdx, args.GetReceiverOperand());
-
-    STATIC_ASSERT(kSmiTag == 0);
-    __ JumpIfSmi(rdx, &miss);
-
-    CheckPrototypes(IC::CurrentTypeOf(object, isolate()), rdx, holder,
-                    rbx, rax, rdi, name, &miss);
-  } else {
+  HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
+  if (!cell.is_null()) {
     ASSERT(cell->value() == *function);
-    GenerateGlobalReceiverCheck(Handle<JSObject>::cast(object), holder, name,
-                                &miss);
     GenerateLoadFunctionFromCell(cell, function, &miss);
   }
 
   // Load the (only) argument into rax.
   __ movq(rax, args.GetArgumentOperand(1));
 
   // Check if the argument is a smi.
   Label smi;
   STATIC_ASSERT(kSmiTag == 0);
   __ JumpIfSmi(rax, &smi);
 
   // Check if the argument is a heap number and load its value into xmm0.
-  Label slow;
   __ CheckMap(rax, factory()->heap_number_map(), &slow, DONT_DO_SMI_CHECK);
   __ movsd(xmm0, FieldOperand(rax, HeapNumber::kValueOffset));
 
   // Check if the argument is strictly positive. Note this also discards NaN.
   __ xorpd(xmm1, xmm1);
   __ ucomisd(xmm0, xmm1);
   __ j(below_equal, &slow);
 
   // Do a truncating conversion.
   __ cvttsd2si(rax, xmm0);
@@ skipping 48 matching lines @@
   __ movq(rax, args.GetArgumentOperand(1));
   __ ret(2 * kPointerSize);
 
   // Tail call the full function. We do not have to patch the receiver
   // because the function makes no use of it.
   __ bind(&slow);
   ParameterCount expected(function);
   __ InvokeFunction(function, expected, arguments(),
                     JUMP_FUNCTION, NullCallWrapper(), CALL_AS_METHOD);
 
-  __ bind(&miss);
-  // rcx: function name.
-  GenerateMissBranch();
+  HandlerFrontendFooter(&miss);
 
   // Return the generated code.
   return GetCode(type, name);
 }
 
 
 Handle<Code> CallStubCompiler::CompileMathAbsCall(
     Handle<Object> object,
     Handle<JSObject> holder,
     Handle<Cell> cell,
     Handle<JSFunction> function,
     Handle<String> name,
     Code::StubType type) {
-  // ----------- S t a t e -------------
-  //  -- rcx                 : function name
-  //  -- rsp[0]              : return address
-  //  -- rsp[(argc - n) * 8] : arg[n] (zero-based)
-  //  -- ...
-  //  -- rsp[(argc + 1) * 8] : receiver
-  // -----------------------------------
-
   // If the object is not a JSObject or we got an unexpected number of
   // arguments, bail out to the regular call.
   const int argc = arguments().immediate();
   StackArgumentsAccessor args(rsp, argc);
   if (!object->IsJSObject() || argc != 1) return Handle<Code>::null();
 
   Label miss;
-  GenerateNameCheck(name, &miss);
 
-  if (cell.is_null()) {
-    __ movq(rdx, args.GetReceiverOperand());
-    __ JumpIfSmi(rdx, &miss);
-    CheckPrototypes(IC::CurrentTypeOf(object, isolate()), rdx, holder,
-                    rbx, rax, rdi, name, &miss);
-  } else {
+  HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
+  if (!cell.is_null()) {
     ASSERT(cell->value() == *function);
-    GenerateGlobalReceiverCheck(Handle<JSObject>::cast(object), holder, name,
-                                &miss);
     GenerateLoadFunctionFromCell(cell, function, &miss);
   }
+
   // Load the (only) argument into rax.
   __ movq(rax, args.GetArgumentOperand(1));
 
   // Check if the argument is a smi.
   Label not_smi;
   STATIC_ASSERT(kSmiTag == 0);
   __ JumpIfNotSmi(rax, &not_smi);
 
   // Branchless abs implementation, refer to below:
   // http://graphics.stanford.edu/~seander/bithacks.html#IntegerAbs
@@ skipping 41 matching lines @@
   // Tail call the full function. We do not have to patch the receiver
   // because the function makes no use of it.
   __ bind(&slow);
   CallKind call_kind = CallICBase::Contextual::decode(extra_state_)
       ? CALL_AS_FUNCTION
       : CALL_AS_METHOD;
   ParameterCount expected(function);
   __ InvokeFunction(function, expected, arguments(),
                     JUMP_FUNCTION, NullCallWrapper(), call_kind);
 
-  __ bind(&miss);
-  // rcx: function name.
-  GenerateMissBranch();
+  HandlerFrontendFooter(&miss);
 
   // Return the generated code.
   return GetCode(type, name);
 }
 
 
 Handle<Code> CallStubCompiler::CompileFastApiCall(
     const CallOptimization& optimization,
     Handle<Object> object,
     Handle<JSObject> holder,
@@ skipping 54 matching lines @@
   Label success;
   // Check that the object is a boolean.
   __ CompareRoot(object, Heap::kTrueValueRootIndex);
   __ j(equal, &success);
   __ CompareRoot(object, Heap::kFalseValueRootIndex);
   __ j(not_equal, miss);
   __ bind(&success);
 }
 
 
-void CallStubCompiler::CompileHandlerFrontend(Handle<Object> object,
-                                              Handle<JSObject> holder,
-                                              Handle<Name> name,
-                                              CheckType check) {
-  // ----------- S t a t e -------------
-  // rcx                 : function name
-  // rsp[0]              : return address
-  // rsp[8]              : argument argc
-  // rsp[16]             : argument argc - 1
-  // ...
-  // rsp[argc * 8]       : argument 1
-  // rsp[(argc + 1) * 8] : argument 0 = receiver
-  // -----------------------------------
-  Label miss;
-  GenerateNameCheck(name, &miss);
+void CallStubCompiler::PatchGlobalProxy(Handle<Object> object) {
+  if (object->IsGlobalObject()) {
+    StackArgumentsAccessor args(rsp, arguments());
+    __ movq(rdx, FieldOperand(rdx, GlobalObject::kGlobalReceiverOffset));
+    __ movq(args.GetReceiverOperand(), rdx);
+  }
+}
+
+
+Register CallStubCompiler::HandlerFrontendHeader(Handle<Object> object,
+                                                 Handle<JSObject> holder,
+                                                 Handle<Name> name,
+                                                 CheckType check,
+                                                 Label* miss) {
+  GenerateNameCheck(name, miss);
+
+  Register reg = rdx;
 
   StackArgumentsAccessor args(rsp, arguments());
-  __ movq(rdx, args.GetReceiverOperand());
+  __ movq(reg, args.GetReceiverOperand());
 
   // Check that the receiver isn't a smi.
   if (check != NUMBER_CHECK) {
-    __ JumpIfSmi(rdx, &miss);
+    __ JumpIfSmi(reg, miss);
   }
 
   // Make sure that it's okay not to patch the on stack receiver
   // unless we're doing a receiver map check.
   ASSERT(!object->IsGlobalObject() || check == RECEIVER_MAP_CHECK);
 
   Counters* counters = isolate()->counters();
   switch (check) {
     case RECEIVER_MAP_CHECK:
       __ IncrementCounter(counters->call_const(), 1);
 
       // Check that the maps haven't changed.
-      CheckPrototypes(IC::CurrentTypeOf(object, isolate()), rdx, holder,
-                      rbx, rax, rdi, name, &miss);
-
-      // Patch the receiver on the stack with the global proxy if
-      // necessary.
-      if (object->IsGlobalObject()) {
-        __ movq(rdx, FieldOperand(rdx, GlobalObject::kGlobalReceiverOffset));
-        __ movq(args.GetReceiverOperand(), rdx);
-      }
+      reg = CheckPrototypes(IC::CurrentTypeOf(object, isolate()), reg, holder,
+                            rbx, rax, rdi, name, miss);
       break;
 
     case STRING_CHECK: {
       // Check that the object is a string.
-      __ CmpObjectType(rdx, FIRST_NONSTRING_TYPE, rax);
-      __ j(above_equal, &miss);
+      __ CmpObjectType(reg, FIRST_NONSTRING_TYPE, rax);
+      __ j(above_equal, miss);
       // Check that the maps starting from the prototype haven't changed.
       GenerateDirectLoadGlobalFunctionPrototype(
-          masm(), Context::STRING_FUNCTION_INDEX, rax, &miss);
-      Handle<Object> prototype(object->GetPrototype(isolate()), isolate());
-      CheckPrototypes(
-          IC::CurrentTypeOf(prototype, isolate()),
-          rax, holder, rbx, rdx, rdi, name, &miss);
+          masm(), Context::STRING_FUNCTION_INDEX, rax, miss);
       break;
     }
     case SYMBOL_CHECK: {
       // Check that the object is a symbol.
-      __ CmpObjectType(rdx, SYMBOL_TYPE, rax);
-      __ j(not_equal, &miss);
+      __ CmpObjectType(reg, SYMBOL_TYPE, rax);
+      __ j(not_equal, miss);
       // Check that the maps starting from the prototype haven't changed.
       GenerateDirectLoadGlobalFunctionPrototype(
-          masm(), Context::SYMBOL_FUNCTION_INDEX, rax, &miss);
-      Handle<Object> prototype(object->GetPrototype(isolate()), isolate());
-      CheckPrototypes(
-          IC::CurrentTypeOf(prototype, isolate()),
-          rax, holder, rbx, rdx, rdi, name, &miss);
+          masm(), Context::SYMBOL_FUNCTION_INDEX, rax, miss);
       break;
     }
     case NUMBER_CHECK: {
       Label fast;
       // Check that the object is a smi or a heap number.
-      __ JumpIfSmi(rdx, &fast);
-      __ CmpObjectType(rdx, HEAP_NUMBER_TYPE, rax);
-      __ j(not_equal, &miss);
+      __ JumpIfSmi(reg, &fast);
+      __ CmpObjectType(reg, HEAP_NUMBER_TYPE, rax);
+      __ j(not_equal, miss);
       __ bind(&fast);
       // Check that the maps starting from the prototype haven't changed.
       GenerateDirectLoadGlobalFunctionPrototype(
-          masm(), Context::NUMBER_FUNCTION_INDEX, rax, &miss);
-      Handle<Object> prototype(object->GetPrototype(isolate()), isolate());
-      CheckPrototypes(
-          IC::CurrentTypeOf(prototype, isolate()),
-          rax, holder, rbx, rdx, rdi, name, &miss);
+          masm(), Context::NUMBER_FUNCTION_INDEX, rax, miss);
       break;
     }
     case BOOLEAN_CHECK: {
-      GenerateBooleanCheck(rdx, &miss);
+      GenerateBooleanCheck(reg, miss);
       // Check that the maps starting from the prototype haven't changed.
       GenerateDirectLoadGlobalFunctionPrototype(
-          masm(), Context::BOOLEAN_FUNCTION_INDEX, rax, &miss);
-      Handle<Object> prototype(object->GetPrototype(isolate()), isolate());
-      CheckPrototypes(
-          IC::CurrentTypeOf(prototype, isolate()),
-          rax, holder, rbx, rdx, rdi, name, &miss);
+          masm(), Context::BOOLEAN_FUNCTION_INDEX, rax, miss);
       break;
     }
   }
 
-  Label success;
-  __ jmp(&success);
+  if (check != RECEIVER_MAP_CHECK) {
+    Handle<Object> prototype(object->GetPrototype(isolate()), isolate());
+    reg = CheckPrototypes(
+        IC::CurrentTypeOf(prototype, isolate()),
+        rax, holder, rbx, rdx, rdi, name, miss);
+  }
 
-  // Handle call cache miss.
-  __ bind(&miss);
-  GenerateMissBranch();
-
-  __ bind(&success);
+  return reg;
 }
 
 
 void CallStubCompiler::CompileHandlerBackend(Handle<JSFunction> function) {
   CallKind call_kind = CallICBase::Contextual::decode(extra_state_)
       ? CALL_AS_FUNCTION
       : CALL_AS_METHOD;
   ParameterCount expected(function);
   __ InvokeFunction(function, expected, arguments(),
                     JUMP_FUNCTION, NullCallWrapper(), call_kind);
 }
 
 
 Handle<Code> CallStubCompiler::CompileCallConstant(
     Handle<Object> object,
     Handle<JSObject> holder,
     Handle<Name> name,
     CheckType check,
     Handle<JSFunction> function) {
   if (HasCustomCallGenerator(function)) {
     Handle<Code> code = CompileCustomCall(object, holder,
                                           Handle<PropertyCell>::null(),
                                           function, Handle<String>::cast(name),
                                           Code::FAST);
     // A null handle means bail out to the regular compiler code below.
     if (!code.is_null()) return code;
   }
 
-  CompileHandlerFrontend(object, holder, name, check);
+  Label miss;
+  HandlerFrontendHeader(object, holder, name, check, &miss);
+  PatchGlobalProxy(object);
   CompileHandlerBackend(function);
+  HandlerFrontendFooter(&miss);
 
   // Return the generated code.
   return GetCode(function);
 }
 
 
 Handle<Code> CallStubCompiler::CompileCallInterceptor(Handle<JSObject> object,
                                                       Handle<JSObject> holder,
                                                       Handle<Name> name) {
-  // ----------- S t a t e -------------
-  // rcx                 : function name
-  // rsp[0]              : return address
-  // rsp[8]              : argument argc
-  // rsp[16]             : argument argc - 1
-  // ...
-  // rsp[argc * 8]       : argument 1
-  // rsp[(argc + 1) * 8] : argument 0 = receiver
-  // -----------------------------------
   Label miss;
   GenerateNameCheck(name, &miss);
 
-
   LookupResult lookup(isolate());
   LookupPostInterceptor(holder, name, &lookup);
 
   // Get the receiver from the stack.
   StackArgumentsAccessor args(rsp, arguments());
   __ movq(rdx, args.GetReceiverOperand());
 
   CallInterceptorCompiler compiler(this, arguments(), rcx, extra_state_);
   compiler.Compile(masm(), object, holder, name, &lookup, rdx, rbx, rdi, rax,
                    &miss);
 
   // Restore receiver.
   __ movq(rdx, args.GetReceiverOperand());
 
   // Check that the function really is a function.
   __ JumpIfSmi(rax, &miss);
   __ CmpObjectType(rax, JS_FUNCTION_TYPE, rbx);
   __ j(not_equal, &miss);
 
   // Patch the receiver on the stack with the global proxy if
   // necessary.
   if (object->IsGlobalObject()) {

[Igor Sheludko, 2013/11/28 12:54:27]

Looks like PatchGlobalProxy(object);

     __ movq(rdx, FieldOperand(rdx, GlobalObject::kGlobalReceiverOffset));
     __ movq(args.GetReceiverOperand(), rdx);
   }
 
   // Invoke the function.
   __ movq(rdi, rax);
   CallKind call_kind = CallICBase::Contextual::decode(extra_state_)
       ? CALL_AS_FUNCTION
       : CALL_AS_METHOD;
   __ InvokeFunction(rdi, arguments(), JUMP_FUNCTION,
                     NullCallWrapper(), call_kind);
 
   // Handle load cache miss.
   __ bind(&miss);
   GenerateMissBranch();
 
   // Return the generated code.
   return GetCode(Code::FAST, name);
 }
 
 
 Handle<Code> CallStubCompiler::CompileCallGlobal(
     Handle<JSObject> object,
     Handle<GlobalObject> holder,
     Handle<PropertyCell> cell,
     Handle<JSFunction> function,
     Handle<Name> name) {
-  // ----------- S t a t e -------------
-  // rcx                 : function name
-  // rsp[0]              : return address
-  // rsp[8]              : argument argc
-  // rsp[16]             : argument argc - 1
-  // ...
-  // rsp[argc * 8]       : argument 1
-  // rsp[(argc + 1) * 8] : argument 0 = receiver
-  // -----------------------------------
-
   if (HasCustomCallGenerator(function)) {
     Handle<Code> code = CompileCustomCall(
         object, holder, cell, function, Handle<String>::cast(name),
         Code::NORMAL);
     // A null handle means bail out to the regular compiler code below.
     if (!code.is_null()) return code;
   }
 
   Label miss;
-  GenerateNameCheck(name, &miss);
-
-  StackArgumentsAccessor args(rsp, arguments());
-  GenerateGlobalReceiverCheck(object, holder, name, &miss);
+  HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
   GenerateLoadFunctionFromCell(cell, function, &miss);
-
-  // Patch the receiver on the stack with the global proxy.
-  if (object->IsGlobalObject()) {
-    __ movq(rdx, FieldOperand(rdx, GlobalObject::kGlobalReceiverOffset));
-    __ movq(args.GetReceiverOperand(), rdx);
-  }
+  PatchGlobalProxy(object);
 
   // Set up the context (function already in rdi).
   __ movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset));
 
   // Jump to the cached code (tail call).
   Counters* counters = isolate()->counters();
   __ IncrementCounter(counters->call_global_inline(), 1);
   ParameterCount expected(function->shared()->formal_parameter_count());
   CallKind call_kind = CallICBase::Contextual::decode(extra_state_)
       ? CALL_AS_FUNCTION
       : CALL_AS_METHOD;
   // We call indirectly through the code field in the function to
   // allow recompilation to take effect without changing any of the
   // call sites.
   __ movq(rdx, FieldOperand(rdi, JSFunction::kCodeEntryOffset));
   __ InvokeCode(rdx, expected, arguments(), JUMP_FUNCTION,
                 NullCallWrapper(), call_kind);
 
-  // Handle call cache miss.
-  __ bind(&miss);
-  __ IncrementCounter(counters->call_global_inline_miss(), 1);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&miss);
 
   // Return the generated code.
   return GetCode(Code::NORMAL, name);
 }
 
 
 Handle<Code> StoreStubCompiler::CompileStoreCallback(
     Handle<JSObject> object,
     Handle<JSObject> holder,
     Handle<Name> name,
@@ skipping 363 matching lines @@
   // -----------------------------------
   TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64