Revision: 18161
Author:   [email protected]
Date:     Fri Nov 29 12:57:47 2013 UTC
Log:      Reupload CallIC changes.

Relands https://codereview.chromium.org/91963003/ with fix for the invalid receiver patching in case of the global object / interceptor.
BUG=
[email protected]

Review URL: https://chromiumcodereview.appspot.com/96763002
http://code.google.com/p/v8/source/detail?r=18161

Modified:
 /branches/bleeding_edge/src/arm/macro-assembler-arm.cc
 /branches/bleeding_edge/src/arm/macro-assembler-arm.h
 /branches/bleeding_edge/src/arm/stub-cache-arm.cc
 /branches/bleeding_edge/src/ia32/macro-assembler-ia32.cc
 /branches/bleeding_edge/src/ia32/macro-assembler-ia32.h
 /branches/bleeding_edge/src/ia32/stub-cache-ia32.cc
 /branches/bleeding_edge/src/mips/macro-assembler-mips.cc
 /branches/bleeding_edge/src/mips/macro-assembler-mips.h
 /branches/bleeding_edge/src/mips/stub-cache-mips.cc
 /branches/bleeding_edge/src/stub-cache.cc
 /branches/bleeding_edge/src/stub-cache.h
 /branches/bleeding_edge/src/x64/macro-assembler-x64.cc
 /branches/bleeding_edge/src/x64/macro-assembler-x64.h
 /branches/bleeding_edge/src/x64/stub-cache-x64.cc

=======================================
--- /branches/bleeding_edge/src/arm/macro-assembler-arm.cc Fri Nov 29 09:02:00 2013 UTC +++ /branches/bleeding_edge/src/arm/macro-assembler-arm.cc Fri Nov 29 12:57:47 2013 UTC
@@ -1229,7 +1229,7 @@
 }


-void MacroAssembler::InvokeFunction(Handle<JSFunction> function,
+void MacroAssembler::InvokeFunction(Register function,
                                     const ParameterCount& expected,
                                     const ParameterCount& actual,
                                     InvokeFlag flag,
@@ -1238,8 +1238,10 @@
   // You can't call a function without a valid frame.
   ASSERT(flag == JUMP_FUNCTION || has_frame());

+ // Contract with called JS functions requires that function is passed in r1.
+  ASSERT(function.is(r1));
+
   // Get the function and setup the context.
-  Move(r1, function);
   ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset));

   // We call indirectly through the code field in the function to
@@ -1248,6 +1250,17 @@
   ldr(r3, FieldMemOperand(r1, JSFunction::kCodeEntryOffset));
   InvokeCode(r3, expected, actual, flag, call_wrapper, call_kind);
 }
+
+
+void MacroAssembler::InvokeFunction(Handle<JSFunction> function,
+                                    const ParameterCount& expected,
+                                    const ParameterCount& actual,
+                                    InvokeFlag flag,
+                                    const CallWrapper& call_wrapper,
+                                    CallKind call_kind) {
+  Move(r1, function);
+  InvokeFunction(r1, expected, actual, flag, call_wrapper, call_kind);
+}


 void MacroAssembler::IsObjectJSObjectType(Register heap_object,
=======================================
--- /branches/bleeding_edge/src/arm/macro-assembler-arm.h Fri Nov 29 09:02:00 2013 UTC +++ /branches/bleeding_edge/src/arm/macro-assembler-arm.h Fri Nov 29 12:57:47 2013 UTC
@@ -613,6 +613,13 @@
                       const CallWrapper& call_wrapper,
                       CallKind call_kind);

+  void InvokeFunction(Register function,
+                      const ParameterCount& expected,
+                      const ParameterCount& actual,
+                      InvokeFlag flag,
+                      const CallWrapper& call_wrapper,
+                      CallKind call_kind);
+
   void InvokeFunction(Handle<JSFunction> function,
                       const ParameterCount& expected,
                       const ParameterCount& actual,
=======================================
--- /branches/bleeding_edge/src/arm/stub-cache-arm.cc Fri Nov 29 09:31:45 2013 UTC +++ /branches/bleeding_edge/src/arm/stub-cache-arm.cc Fri Nov 29 12:57:47 2013 UTC
@@ -740,36 +740,6 @@
     __ mov(this->name(), Operand(name));
   }
 }
-
-
-static void GenerateCallFunction(MacroAssembler* masm,
-                                 Handle<Object> object,
-                                 const ParameterCount& arguments,
-                                 Label* miss,
-                                 ExtraICState extra_ic_state) {
-  // ----------- S t a t e -------------
-  //  -- r0: receiver
-  //  -- r1: function to call
-  // -----------------------------------
-
-  // Check that the function really is a function.
-  __ JumpIfSmi(r1, miss);
-  __ CompareObjectType(r1, r3, r3, JS_FUNCTION_TYPE);
-  __ b(ne, miss);
-
-  if (object->IsGlobalObject()) {
-    const int argc = arguments.immediate();
-    const int receiver_offset = argc * kPointerSize;
-    __ ldr(r3, FieldMemOperand(r0, GlobalObject::kGlobalReceiverOffset));
-    __ str(r3, MemOperand(sp, receiver_offset));
-  }
-
-  // Invoke the function.
-  CallKind call_kind = CallICBase::Contextual::decode(extra_ic_state)
-      ? CALL_AS_FUNCTION
-      : CALL_AS_METHOD;
- __ InvokeFunction(r1, arguments, JUMP_FUNCTION, NullCallWrapper(), call_kind);
-}


 static void PushInterceptorArguments(MacroAssembler* masm,
@@ -955,7 +925,7 @@

 class CallInterceptorCompiler BASE_EMBEDDED {
  public:
-  CallInterceptorCompiler(StubCompiler* stub_compiler,
+  CallInterceptorCompiler(CallStubCompiler* stub_compiler,
                           const ParameterCount& arguments,
                           Register name,
                           ExtraICState extra_ic_state)
@@ -1067,13 +1037,8 @@
       GenerateFastApiDirectCall(
           masm, optimization, arguments_.immediate(), false);
     } else {
-      CallKind call_kind = CallICBase::Contextual::decode(extra_ic_state_)
-          ? CALL_AS_FUNCTION
-          : CALL_AS_METHOD;
       Handle<JSFunction> function = optimization.constant_function();
-      ParameterCount expected(function);
-      __ InvokeFunction(function, expected, arguments_,
-                        JUMP_FUNCTION, NullCallWrapper(), call_kind);
+      stub_compiler_->GenerateJumpFunctionIgnoreReceiver(function);
     }

     // Deferred code for fast API call case---clean preallocated space.
@@ -1139,7 +1104,7 @@
     __ b(ne, interceptor_succeeded);
   }

-  StubCompiler* stub_compiler_;
+  CallStubCompiler* stub_compiler_;
   const ParameterCount& arguments_;
   Register name_;
   ExtraICState extra_ic_state_;
@@ -1541,6 +1506,15 @@
 }


+void CallStubCompiler::GenerateFunctionCheck(Register function,
+                                             Register scratch,
+                                             Label* miss) {
+  __ JumpIfSmi(function, miss);
+  __ CompareObjectType(function, scratch, scratch, JS_FUNCTION_TYPE);
+  __ b(ne, miss);
+}
+
+
 void CallStubCompiler::GenerateLoadFunctionFromCell(
     Handle<Cell> cell,
     Handle<JSFunction> function,
@@ -1556,9 +1530,7 @@
     // the nice side effect that multiple closures based on the same
     // function can all use this call IC. Before we load through the
     // function, we have to verify that it still is a function.
-    __ JumpIfSmi(r1, miss);
-    __ CompareObjectType(r1, r3, r3, JS_FUNCTION_TYPE);
-    __ b(ne, miss);
+    GenerateFunctionCheck(r1, r3, miss);

     // Check the shared function info. Make sure it hasn't changed.
     __ Move(r3, Handle<SharedFunctionInfo>(function->shared()));
@@ -1590,8 +1562,7 @@
       object, holder, name, RECEIVER_MAP_CHECK, &miss);
   GenerateFastPropertyLoad(masm(), r1, reg, index.is_inobject(holder),
index.translate(holder), Representation::Tagged());
-
-  GenerateCallFunction(masm(), object, arguments(), &miss, extra_state_);
+  GenerateJumpFunction(object, r1, &miss);

   HandlerFrontendFooter(&miss);

@@ -2006,8 +1977,7 @@
   __ bind(&miss);
   // Restore function name in r2.
   __ Move(r2, name);
-  __ bind(&name_miss);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&name_miss);

   // Return the generated code.
   return GetCode(type, name);
@@ -2073,8 +2043,7 @@
   __ bind(&miss);
   // Restore function name in r2.
   __ Move(r2, name);
-  __ bind(&name_miss);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&name_miss);

   // Return the generated code.
   return GetCode(type, name);
@@ -2121,12 +2090,10 @@
   StubRuntimeCallHelper call_helper;
   generator.GenerateSlow(masm(), call_helper);

-  // 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);
+ // We do not have to patch the receiver because the function makes no use of
+  // it.
+  GenerateJumpFunctionIgnoreReceiver(function);

   HandlerFrontendFooter(&miss);

@@ -2214,11 +2181,9 @@
   __ Ret();

   __ bind(&slow);
-  // Tail call the full function. We do not have to patch the receiver
-  // because the function makes no use of it.
-  ParameterCount expected(function);
-  __ InvokeFunction(function, expected, arguments(),
-                    JUMP_FUNCTION, NullCallWrapper(), CALL_AS_METHOD);
+ // We do not have to patch the receiver because the function makes no use of
+  // it.
+  GenerateJumpFunctionIgnoreReceiver(function);

   HandlerFrontendFooter(&miss);

@@ -2296,12 +2261,10 @@
   __ Drop(argc + 1);
   __ Ret();

-  // 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);
+ // We do not have to patch the receiver because the function makes no use of
+  // it.
+  GenerateJumpFunctionIgnoreReceiver(function);

   HandlerFrontendFooter(&miss);

@@ -2354,8 +2317,7 @@
   __ bind(&miss);
   FreeSpaceForFastApiCall(masm());

-  __ bind(&miss_before_stack_reserved);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&miss_before_stack_reserved);

   // Return the generated code.
   return GetCode(function);
@@ -2472,39 +2434,17 @@
 }


-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<Cell>::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;
-  }
-
-  Label miss;
-  HandlerFrontendHeader(object, holder, name, check, &miss);
+void CallStubCompiler::GenerateJumpFunction(Handle<Object> object,
+                                            Register function,
+                                            Label* miss) {
+  ASSERT(function.is(r1));
+  // Check that the function really is a function.
+  GenerateFunctionCheck(function, r3, miss);
   PatchGlobalProxy(object);
-  CompileHandlerBackend(function);
-  HandlerFrontendFooter(&miss);

-  // Return the generated code.
-  return GetCode(function);
+  // Invoke the function.
+  __ InvokeFunction(r1, arguments(), JUMP_FUNCTION,
+                    NullCallWrapper(), call_kind());
 }


@@ -2531,11 +2471,9 @@
   // Restore receiver.
   __ ldr(r0, MemOperand(sp, argc * kPointerSize));

-  GenerateCallFunction(masm(), object, arguments(), &miss, extra_state_);
+  GenerateJumpFunction(object, r1, &miss);

-  // Handle call cache miss.
-  __ bind(&miss);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&miss);

   // Return the generated code.
   return GetCode(Code::FAST, name);
@@ -2558,26 +2496,13 @@

   Label miss;
   HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
+ // Potentially loads a closure that matches the shared function info of the
+  // function, rather than function.
   GenerateLoadFunctionFromCell(cell, function, &miss);
-  PatchGlobalProxy(object);
-
-  // Set up the context (function already in r1).
-  __ ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset));

-  // Jump to the cached code (tail call).
   Counters* counters = isolate()->counters();
   __ IncrementCounter(counters->call_global_inline(), 1, r3, r4);
-  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.
-  __ ldr(r3, FieldMemOperand(r1, JSFunction::kCodeEntryOffset));
-  __ InvokeCode(r3, expected, arguments(), JUMP_FUNCTION,
-                NullCallWrapper(), call_kind);
-
+  GenerateJumpFunction(object, r1, function);
   HandlerFrontendFooter(&miss);

   // Return the generated code.
=======================================
--- /branches/bleeding_edge/src/ia32/macro-assembler-ia32.cc Fri Nov 29 09:47:40 2013 UTC +++ /branches/bleeding_edge/src/ia32/macro-assembler-ia32.cc Fri Nov 29 12:57:47 2013 UTC
@@ -2634,7 +2634,7 @@
 }


-void MacroAssembler::InvokeFunction(Handle<JSFunction> function,
+void MacroAssembler::InvokeFunction(Register fun,
                                     const ParameterCount& expected,
                                     const ParameterCount& actual,
                                     InvokeFlag flag,
@@ -2643,16 +2643,23 @@
   // You can't call a function without a valid frame.
   ASSERT(flag == JUMP_FUNCTION || has_frame());

-  // Get the function and setup the context.
-  LoadHeapObject(edi, function);
+  ASSERT(fun.is(edi));
   mov(esi, FieldOperand(edi, JSFunction::kContextOffset));

-  // We call indirectly through the code field in the function to
-  // allow recompilation to take effect without changing any of the
-  // call sites.
   InvokeCode(FieldOperand(edi, JSFunction::kCodeEntryOffset),
              expected, actual, flag, call_wrapper, call_kind);
 }
+
+
+void MacroAssembler::InvokeFunction(Handle<JSFunction> function,
+                                    const ParameterCount& expected,
+                                    const ParameterCount& actual,
+                                    InvokeFlag flag,
+                                    const CallWrapper& call_wrapper,
+                                    CallKind call_kind) {
+  LoadHeapObject(edi, function);
+  InvokeFunction(edi, expected, actual, flag, call_wrapper, call_kind);
+}


 void MacroAssembler::InvokeBuiltin(Builtins::JavaScript id,
=======================================
--- /branches/bleeding_edge/src/ia32/macro-assembler-ia32.h Fri Nov 29 09:02:00 2013 UTC +++ /branches/bleeding_edge/src/ia32/macro-assembler-ia32.h Fri Nov 29 12:57:47 2013 UTC
@@ -349,6 +349,13 @@
                       const CallWrapper& call_wrapper,
                       CallKind call_kind);

+  void InvokeFunction(Register function,
+                      const ParameterCount& expected,
+                      const ParameterCount& actual,
+                      InvokeFlag flag,
+                      const CallWrapper& call_wrapper,
+                      CallKind call_kind);
+
   void InvokeFunction(Handle<JSFunction> function,
                       const ParameterCount& expected,
                       const ParameterCount& actual,
=======================================
--- /branches/bleeding_edge/src/ia32/stub-cache-ia32.cc Fri Nov 29 09:02:00 2013 UTC +++ /branches/bleeding_edge/src/ia32/stub-cache-ia32.cc Fri Nov 29 12:57:47 2013 UTC
@@ -645,7 +645,7 @@

 class CallInterceptorCompiler BASE_EMBEDDED {
  public:
-  CallInterceptorCompiler(StubCompiler* stub_compiler,
+  CallInterceptorCompiler(CallStubCompiler* stub_compiler,
                           const ParameterCount& arguments,
                           Register name,
                           ExtraICState extra_state)
@@ -756,13 +756,8 @@
     if (can_do_fast_api_call) {
       GenerateFastApiCall(masm, optimization, arguments_.immediate());
     } else {
-      CallKind call_kind = CallICBase::Contextual::decode(extra_state_)
-          ? CALL_AS_FUNCTION
-          : CALL_AS_METHOD;
-      Handle<JSFunction> function = optimization.constant_function();
-      ParameterCount expected(function);
-      __ InvokeFunction(function, expected, arguments_,
-                        JUMP_FUNCTION, NullCallWrapper(), call_kind);
+      Handle<JSFunction> fun = optimization.constant_function();
+      stub_compiler_->GenerateJumpFunctionIgnoreReceiver(fun);
     }

     // Deferred code for fast API call case---clean preallocated space.
@@ -830,7 +825,7 @@
     __ j(not_equal, interceptor_succeeded);
   }

-  StubCompiler* stub_compiler_;
+  CallStubCompiler* stub_compiler_;
   const ParameterCount& arguments_;
   Register name_;
   ExtraICState extra_state_;
@@ -1601,6 +1596,15 @@
   }
 }

+
+void CallStubCompiler::GenerateFunctionCheck(Register function,
+                                             Register scratch,
+                                             Label* miss) {
+  __ JumpIfSmi(function, miss);
+  __ CmpObjectType(function, JS_FUNCTION_TYPE, scratch);
+  __ j(not_equal, miss);
+}
+

 void CallStubCompiler::GenerateLoadFunctionFromCell(
     Handle<Cell> cell,
@@ -1621,9 +1625,7 @@
     // the nice side effect that multiple closures based on the same
     // function can all use this call IC. Before we load through the
     // function, we have to verify that it still is a function.
-    __ JumpIfSmi(edi, miss);
-    __ CmpObjectType(edi, JS_FUNCTION_TYPE, ebx);
-    __ j(not_equal, miss);
+    GenerateFunctionCheck(edi, ebx, miss);

     // Check the shared function info. Make sure it hasn't changed.
     __ cmp(FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset),
@@ -1656,20 +1658,7 @@
   GenerateFastPropertyLoad(
       masm(), edi, reg, index.is_inobject(holder),
       index.translate(holder), Representation::Tagged());
-
-  // Check that the function really is a function.
-  __ JumpIfSmi(edi, &miss);
-  __ CmpObjectType(edi, JS_FUNCTION_TYPE, ebx);
-  __ j(not_equal, &miss);
-
-  PatchGlobalProxy(object);
-
-  // Invoke the function.
-  CallKind call_kind = CallICBase::Contextual::decode(extra_state_)
-      ? CALL_AS_FUNCTION
-      : CALL_AS_METHOD;
-  __ InvokeFunction(edi, arguments(), JUMP_FUNCTION,
-                    NullCallWrapper(), call_kind);
+  GenerateJumpFunction(object, edi, &miss);

   HandlerFrontendFooter(&miss);

@@ -2081,8 +2070,7 @@
   __ bind(&miss);
   // Restore function name in ecx.
   __ Set(ecx, Immediate(name));
-  __ bind(&name_miss);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&name_miss);

   // Return the generated code.
   return GetCode(type, name);
@@ -2150,8 +2138,7 @@
   __ bind(&miss);
   // Restore function name in ecx.
   __ Set(ecx, Immediate(name));
-  __ bind(&name_miss);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&name_miss);

   // Return the generated code.
   return GetCode(type, name);
@@ -2200,15 +2187,10 @@
   StubRuntimeCallHelper call_helper;
   generator.GenerateSlow(masm(), call_helper);

-  // 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);
+ // We do not have to patch the receiver because the function makes no use of
+  // it.
+  GenerateJumpFunctionIgnoreReceiver(function);

   HandlerFrontendFooter(&miss);

@@ -2315,12 +2297,10 @@
   __ mov(eax, Operand(esp, 1 * kPointerSize));
   __ 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);
+ // We do not have to patch the receiver because the function makes no use of
+  // it.
+  GenerateJumpFunctionIgnoreReceiver(function);

   HandlerFrontendFooter(&miss);

@@ -2404,12 +2384,10 @@
   __ mov(FieldOperand(eax, HeapNumber::kMantissaOffset), ecx);
   __ 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);
+ // We do not have to patch the receiver because the function makes no use of
+  // it.
+  GenerateJumpFunctionIgnoreReceiver(function);

   HandlerFrontendFooter(&miss);

@@ -2469,8 +2447,7 @@
   __ bind(&miss);
   __ add(esp, Immediate(kFastApiCallArguments * kPointerSize));

-  __ bind(&miss_before_stack_reserved);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&miss_before_stack_reserved);

   // Return the generated code.
   return GetCode(function);
@@ -2579,40 +2556,18 @@
 }


-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);
-}
+void CallStubCompiler::GenerateJumpFunction(Handle<Object> object,
+                                            Register function,
+                                            Label* miss) {
+  // Check that the function really is a function.
+  GenerateFunctionCheck(function, ebx, miss);

-
-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<Cell>::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;
-  }
-
-  Label miss;
-  HandlerFrontendHeader(object, holder, name, check, &miss);
+  if (!function.is(edi)) __ mov(edi, function);
   PatchGlobalProxy(object);
-  CompileHandlerBackend(function);
-  HandlerFrontendFooter(&miss);

-  // Return the generated code.
-  return GetCode(function);
+  // Invoke the function.
+  __ InvokeFunction(edi, arguments(), JUMP_FUNCTION,
+                    NullCallWrapper(), call_kind());
 }


@@ -2639,29 +2594,9 @@
   // Restore receiver.
   __ mov(edx, Operand(esp, (argc + 1) * kPointerSize));

-  // Check that the function really is a function.
-  __ JumpIfSmi(eax, &miss);
-  __ CmpObjectType(eax, JS_FUNCTION_TYPE, ebx);
-  __ j(not_equal, &miss);
+  GenerateJumpFunction(object, eax, &miss);

-  // Patch the receiver on the stack with the global proxy if
-  // necessary.
-  if (object->IsGlobalObject()) {
-    __ mov(edx, FieldOperand(edx, GlobalObject::kGlobalReceiverOffset));
-    __ mov(Operand(esp, (argc + 1) * kPointerSize), edx);
-  }
-
-  // Invoke the function.
-  __ mov(edi, eax);
-  CallKind call_kind = CallICBase::Contextual::decode(extra_state_)
-      ? CALL_AS_FUNCTION
-      : CALL_AS_METHOD;
-  __ InvokeFunction(edi, arguments(), JUMP_FUNCTION,
-                    NullCallWrapper(), call_kind);
-
-  // Handle load cache miss.
-  __ bind(&miss);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&miss);

   // Return the generated code.
   return GetCode(Code::FAST, name);
@@ -2684,25 +2619,10 @@

   Label miss;
   HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
+ // Potentially loads a closure that matches the shared function info of the
+  // function, rather than function.
   GenerateLoadFunctionFromCell(cell, function, &miss);
-  PatchGlobalProxy(object);
-
-  // Set up the context (function already in edi).
-  __ mov(esi, FieldOperand(edi, 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.
-  __ InvokeCode(FieldOperand(edi, JSFunction::kCodeEntryOffset),
-                expected, arguments(), JUMP_FUNCTION,
-                NullCallWrapper(), call_kind);
+  GenerateJumpFunction(object, edi, function);

   HandlerFrontendFooter(&miss);

=======================================
--- /branches/bleeding_edge/src/mips/macro-assembler-mips.cc Fri Nov 29 10:31:49 2013 UTC +++ /branches/bleeding_edge/src/mips/macro-assembler-mips.cc Fri Nov 29 12:57:47 2013 UTC
@@ -3728,7 +3728,7 @@
 }


-void MacroAssembler::InvokeFunction(Handle<JSFunction> function,
+void MacroAssembler::InvokeFunction(Register function,
                                     const ParameterCount& expected,
                                     const ParameterCount& actual,
                                     InvokeFlag flag,
@@ -3737,8 +3737,10 @@
   // You can't call a function without a valid frame.
   ASSERT(flag == JUMP_FUNCTION || has_frame());

+ // Contract with called JS functions requires that function is passed in a1.
+  ASSERT(function.is(a1));
+
   // Get the function and setup the context.
-  li(a1, function);
   lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset));

   // We call indirectly through the code field in the function to
@@ -3747,6 +3749,17 @@
   lw(a3, FieldMemOperand(a1, JSFunction::kCodeEntryOffset));
   InvokeCode(a3, expected, actual, flag, call_wrapper, call_kind);
 }
+
+
+void MacroAssembler::InvokeFunction(Handle<JSFunction> function,
+                                    const ParameterCount& expected,
+                                    const ParameterCount& actual,
+                                    InvokeFlag flag,
+                                    const CallWrapper& call_wrapper,
+                                    CallKind call_kind) {
+  li(a1, function);
+  InvokeFunction(a1, expected, actual, flag, call_wrapper, call_kind);
+}


 void MacroAssembler::IsObjectJSObjectType(Register heap_object,
=======================================
--- /branches/bleeding_edge/src/mips/macro-assembler-mips.h Fri Nov 29 10:31:49 2013 UTC +++ /branches/bleeding_edge/src/mips/macro-assembler-mips.h Fri Nov 29 12:57:47 2013 UTC
@@ -917,6 +917,13 @@
                       const CallWrapper& call_wrapper,
                       CallKind call_kind);

+  void InvokeFunction(Register function,
+                      const ParameterCount& expected,
+                      const ParameterCount& actual,
+                      InvokeFlag flag,
+                      const CallWrapper& call_wrapper,
+                      CallKind call_kind);
+
   void InvokeFunction(Handle<JSFunction> function,
                       const ParameterCount& expected,
                       const ParameterCount& actual,
=======================================
--- /branches/bleeding_edge/src/mips/stub-cache-mips.cc Fri Nov 29 10:31:49 2013 UTC +++ /branches/bleeding_edge/src/mips/stub-cache-mips.cc Fri Nov 29 12:57:47 2013 UTC
@@ -730,35 +730,6 @@
     __ li(this->name(), Operand(name));
   }
 }
-
-
-static void GenerateCallFunction(MacroAssembler* masm,
-                                 Handle<Object> object,
-                                 const ParameterCount& arguments,
-                                 Label* miss,
-                                 ExtraICState extra_ic_state) {
-  // ----------- S t a t e -------------
-  //  -- a0: receiver
-  //  -- a1: function to call
-  // -----------------------------------
-  // Check that the function really is a function.
-  __ JumpIfSmi(a1, miss);
-  __ GetObjectType(a1, a3, a3);
-  __ Branch(miss, ne, a3, Operand(JS_FUNCTION_TYPE));
-
-  if (object->IsGlobalObject()) {
-    const int argc = arguments.immediate();
-    const int receiver_offset = argc * kPointerSize;
-    __ lw(a3, FieldMemOperand(a0, GlobalObject::kGlobalReceiverOffset));
-    __ sw(a3, MemOperand(sp, receiver_offset));
-  }
-
-  // Invoke the function.
-  CallKind call_kind = CallICBase::Contextual::decode(extra_ic_state)
-      ? CALL_AS_FUNCTION
-      : CALL_AS_METHOD;
- __ InvokeFunction(a1, arguments, JUMP_FUNCTION, NullCallWrapper(), call_kind);
-}


 static void PushInterceptorArguments(MacroAssembler* masm,
@@ -942,7 +913,7 @@

 class CallInterceptorCompiler BASE_EMBEDDED {
  public:
-  CallInterceptorCompiler(StubCompiler* stub_compiler,
+  CallInterceptorCompiler(CallStubCompiler* stub_compiler,
                           const ParameterCount& arguments,
                           Register name,
                           ExtraICState extra_ic_state)
@@ -1054,13 +1025,8 @@
       GenerateFastApiDirectCall(
           masm, optimization, arguments_.immediate(), false);
     } else {
-      CallKind call_kind = CallICBase::Contextual::decode(extra_ic_state_)
-          ? CALL_AS_FUNCTION
-          : CALL_AS_METHOD;
       Handle<JSFunction> function = optimization.constant_function();
-      ParameterCount expected(function);
-      __ InvokeFunction(function, expected, arguments_,
-                        JUMP_FUNCTION, NullCallWrapper(), call_kind);
+      stub_compiler_->GenerateJumpFunctionIgnoreReceiver(function);
     }

     // Deferred code for fast API call case---clean preallocated space.
@@ -1126,7 +1092,7 @@
     __ Branch(interceptor_succeeded, ne, v0, Operand(scratch));
   }

-  StubCompiler* stub_compiler_;
+  CallStubCompiler* stub_compiler_;
   const ParameterCount& arguments_;
   Register name_;
   ExtraICState extra_ic_state_;
@@ -1525,6 +1491,15 @@
     __ Branch(miss, ne, a2, Operand(name));
   }
 }
+
+
+void CallStubCompiler::GenerateFunctionCheck(Register function,
+                                             Register scratch,
+                                             Label* miss) {
+  __ JumpIfSmi(function, miss);
+  __ GetObjectType(function, scratch, scratch);
+  __ Branch(miss, ne, scratch, Operand(JS_FUNCTION_TYPE));
+}


 void CallStubCompiler::GenerateLoadFunctionFromCell(
@@ -1542,9 +1517,7 @@
     // the nice side effect that multiple closures based on the same
     // function can all use this call IC. Before we load through the
     // function, we have to verify that it still is a function.
-    __ JumpIfSmi(a1, miss);
-    __ GetObjectType(a1, a3, a3);
-    __ Branch(miss, ne, a3, Operand(JS_FUNCTION_TYPE));
+    GenerateFunctionCheck(a1, a3, miss);

     // Check the shared function info. Make sure it hasn't changed.
     __ li(a3, Handle<SharedFunctionInfo>(function->shared()));
@@ -1575,8 +1548,7 @@
       object, holder, name, RECEIVER_MAP_CHECK, &miss);
   GenerateFastPropertyLoad(masm(), a1, reg, index.is_inobject(holder),
index.translate(holder), Representation::Tagged());
-
-  GenerateCallFunction(masm(), object, arguments(), &miss, extra_state_);
+  GenerateJumpFunction(object, a1, &miss);

   HandlerFrontendFooter(&miss);

@@ -1988,8 +1960,7 @@
   __ bind(&miss);
   // Restore function name in a2.
   __ li(a2, name);
-  __ bind(&name_miss);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&name_miss);

   // Return the generated code.
   return GetCode(type, name);
@@ -2053,8 +2024,7 @@
   __ bind(&miss);
   // Restore function name in a2.
   __ li(a2, name);
-  __ bind(&name_miss);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&name_miss);

   // Return the generated code.
   return GetCode(type, name);
@@ -2100,12 +2070,10 @@
   StubRuntimeCallHelper call_helper;
   generator.GenerateSlow(masm(), call_helper);

-  // 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);
+ // We do not have to patch the receiver because the function makes no use of
+  // it.
+  GenerateJumpFunctionIgnoreReceiver(function);

   HandlerFrontendFooter(&miss);

@@ -2211,11 +2179,9 @@
   __ ctc1(a3, FCSR);

   __ bind(&slow);
-  // Tail call the full function. We do not have to patch the receiver
-  // because the function makes no use of it.
-  ParameterCount expected(function);
-  __ InvokeFunction(function, expected, arguments(),
-                    JUMP_FUNCTION, NullCallWrapper(), CALL_AS_METHOD);
+ // We do not have to patch the receiver because the function makes no use of
+  // it.
+  GenerateJumpFunctionIgnoreReceiver(function);

   HandlerFrontendFooter(&miss);

@@ -2292,12 +2258,10 @@
   __ sw(a3, FieldMemOperand(v0, HeapNumber::kMantissaOffset));
   __ DropAndRet(argc + 1);

-  // 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);
+ // We do not have to patch the receiver because the function makes no use of
+  // it.
+  GenerateJumpFunctionIgnoreReceiver(function);

   HandlerFrontendFooter(&miss);

@@ -2352,8 +2316,7 @@
   __ bind(&miss);
   FreeSpaceForFastApiCall(masm());

-  __ bind(&miss_before_stack_reserved);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&miss_before_stack_reserved);

   // Return the generated code.
   return GetCode(function);
@@ -2468,39 +2431,16 @@
 }


-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<Cell>::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;
-  }
-
-  Label miss;
-  HandlerFrontendHeader(object, holder, name, check, &miss);
+void CallStubCompiler::GenerateJumpFunction(Handle<Object> object,
+                                            Register function,
+                                            Label* miss) {
+  ASSERT(function.is(a1));
+  // Check that the function really is a function.
+  GenerateFunctionCheck(function, a3, miss);
   PatchGlobalProxy(object);
-  CompileHandlerBackend(function);
-  HandlerFrontendFooter(&miss);
-
-  // Return the generated code.
-  return GetCode(function);
+  // Invoke the function.
+  __ InvokeFunction(a1, arguments(), JUMP_FUNCTION,
+                    NullCallWrapper(), call_kind());
 }


@@ -2528,11 +2468,9 @@
   // Restore receiver.
   __ lw(a0, MemOperand(sp, argc * kPointerSize));

-  GenerateCallFunction(masm(), object, arguments(), &miss, extra_state_);
+  GenerateJumpFunction(object, a1, &miss);

-  // Handle call cache miss.
-  __ bind(&miss);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&miss);

   // Return the generated code.
   return GetCode(Code::FAST, name);
@@ -2555,26 +2493,12 @@

   Label miss;
   HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
+ // Potentially loads a closure that matches the shared function info of the
+  // function, rather than function.
   GenerateLoadFunctionFromCell(cell, function, &miss);
-  PatchGlobalProxy(object);
-
-  // Set up the context (function already in r1).
-  __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset));
-
-  // Jump to the cached code (tail call).
   Counters* counters = isolate()->counters();
   __ IncrementCounter(counters->call_global_inline(), 1, a3, t0);
-  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.
-  __ lw(a3, FieldMemOperand(a1, JSFunction::kCodeEntryOffset));
-  __ InvokeCode(a3, expected, arguments(), JUMP_FUNCTION,
-                NullCallWrapper(), call_kind);
-
+  GenerateJumpFunction(object, a1, function);
   HandlerFrontendFooter(&miss);

   // Return the generated code.
=======================================
--- /branches/bleeding_edge/src/stub-cache.cc   Fri Nov 29 09:02:00 2013 UTC
+++ /branches/bleeding_edge/src/stub-cache.cc   Fri Nov 29 12:57:47 2013 UTC
@@ -1128,10 +1128,67 @@
 #define __ ACCESS_MASM(masm())


+CallKind CallStubCompiler::call_kind() {
+  return CallICBase::Contextual::decode(extra_state_)
+      ? CALL_AS_FUNCTION
+      : CALL_AS_METHOD;
+}
+
+
 void CallStubCompiler::HandlerFrontendFooter(Label* miss) {
   __ bind(miss);
   GenerateMissBranch();
 }
+
+
+void CallStubCompiler::GenerateJumpFunctionIgnoreReceiver(
+    Handle<JSFunction> function) {
+  ParameterCount expected(function);
+  __ InvokeFunction(function, expected, arguments(),
+                    JUMP_FUNCTION, NullCallWrapper(), call_kind());
+}
+
+
+void CallStubCompiler::GenerateJumpFunction(Handle<Object> object,
+                                            Handle<JSFunction> function) {
+  PatchGlobalProxy(object);
+  GenerateJumpFunctionIgnoreReceiver(function);
+}
+
+
+void CallStubCompiler::GenerateJumpFunction(Handle<Object> object,
+                                            Register actual_closure,
+                                            Handle<JSFunction> function) {
+  PatchGlobalProxy(object);
+  ParameterCount expected(function);
+  __ InvokeFunction(actual_closure, 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<Cell>::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;
+  }
+
+  Label miss;
+  HandlerFrontendHeader(object, holder, name, check, &miss);
+  GenerateJumpFunction(object, function);
+  HandlerFrontendFooter(&miss);
+
+  // Return the generated code.
+  return GetCode(function);
+}


 Register LoadStubCompiler::HandlerFrontendHeader(
=======================================
--- /branches/bleeding_edge/src/stub-cache.h    Fri Nov 29 09:02:00 2013 UTC
+++ /branches/bleeding_edge/src/stub-cache.h    Fri Nov 29 12:57:47 2013 UTC
@@ -919,7 +919,17 @@
                                  Label* miss);
   void HandlerFrontendFooter(Label* miss);

-  void CompileHandlerBackend(Handle<JSFunction> function);
+  void GenerateJumpFunctionIgnoreReceiver(Handle<JSFunction> function);
+  void GenerateJumpFunction(Handle<Object> object,
+                            Handle<JSFunction> function);
+  void GenerateJumpFunction(Handle<Object> object,
+                            Register function,
+                            Label* miss);
+ // Use to call |actual_closure|, a closure with the same shared function info
+  // as |function|.
+  void GenerateJumpFunction(Handle<Object> object,
+                            Register actual_closure,
+                            Handle<JSFunction> function);

   Handle<Code> CompileCallConstant(Handle<Object> object,
                                    Handle<JSObject> holder,
@@ -968,6 +978,8 @@
                                   Handle<JSFunction> function,
                                   Handle<String> name);

+  CallKind call_kind();
+
   Handle<Code> GetCode(Code::StubType type, Handle<Name> name);
   Handle<Code> GetCode(Handle<JSFunction> function);

@@ -981,6 +993,8 @@
                                     Handle<JSFunction> function,
                                     Label* miss);

+ void GenerateFunctionCheck(Register function, Register scratch, Label* miss);
+
   // Generates a jump to CallIC miss stub.
   void GenerateMissBranch();

=======================================
--- /branches/bleeding_edge/src/x64/macro-assembler-x64.cc Fri Nov 29 09:02:00 2013 UTC +++ /branches/bleeding_edge/src/x64/macro-assembler-x64.cc Fri Nov 29 12:57:47 2013 UTC
@@ -3601,7 +3601,7 @@
 }


-void MacroAssembler::InvokeFunction(Handle<JSFunction> function,
+void MacroAssembler::InvokeFunction(Register function,
                                     const ParameterCount& expected,
                                     const ParameterCount& actual,
                                     InvokeFlag flag,
@@ -3610,16 +3610,25 @@
   // You can't call a function without a valid frame.
   ASSERT(flag == JUMP_FUNCTION || has_frame());

-  // Get the function and setup the context.
-  Move(rdi, function);
-  movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset));
+  ASSERT(function.is(rdi));
+  movq(rsi, FieldOperand(function, JSFunction::kContextOffset));
+  // Advances rdx to the end of the Code object header, to the start of
+  // the executable code.
+  movq(rdx, FieldOperand(rdi, JSFunction::kCodeEntryOffset));

-  // 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, actual, flag, call_wrapper, call_kind);
 }
+
+
+void MacroAssembler::InvokeFunction(Handle<JSFunction> function,
+                                    const ParameterCount& expected,
+                                    const ParameterCount& actual,
+                                    InvokeFlag flag,
+                                    const CallWrapper& call_wrapper,
+                                    CallKind call_kind) {
+  Move(rdi, function);
+  InvokeFunction(rdi, expected, actual, flag, call_wrapper, call_kind);
+}


 void MacroAssembler::InvokePrologue(const ParameterCount& expected,
=======================================
--- /branches/bleeding_edge/src/x64/macro-assembler-x64.h Fri Nov 29 09:02:00 2013 UTC +++ /branches/bleeding_edge/src/x64/macro-assembler-x64.h Fri Nov 29 12:57:47 2013 UTC
@@ -371,6 +371,13 @@
                       const CallWrapper& call_wrapper,
                       CallKind call_kind);

+  void InvokeFunction(Register function,
+                      const ParameterCount& expected,
+                      const ParameterCount& actual,
+                      InvokeFlag flag,
+                      const CallWrapper& call_wrapper,
+                      CallKind call_kind);
+
   void InvokeFunction(Handle<JSFunction> function,
                       const ParameterCount& expected,
                       const ParameterCount& actual,
=======================================
--- /branches/bleeding_edge/src/x64/stub-cache-x64.cc Fri Nov 29 09:02:00 2013 UTC +++ /branches/bleeding_edge/src/x64/stub-cache-x64.cc Fri Nov 29 12:57:47 2013 UTC
@@ -637,7 +637,7 @@

 class CallInterceptorCompiler BASE_EMBEDDED {
  public:
-  CallInterceptorCompiler(StubCompiler* stub_compiler,
+  CallInterceptorCompiler(CallStubCompiler* stub_compiler,
                           const ParameterCount& arguments,
                           Register name,
                           ExtraICState extra_ic_state)
@@ -748,13 +748,8 @@
     if (can_do_fast_api_call) {
       GenerateFastApiCall(masm, optimization, arguments_.immediate());
     } else {
-      CallKind call_kind = CallICBase::Contextual::decode(extra_ic_state_)
-          ? CALL_AS_FUNCTION
-          : CALL_AS_METHOD;
       Handle<JSFunction> fun = optimization.constant_function();
-      ParameterCount expected(fun);
-      __ InvokeFunction(fun, expected, arguments_,
-                        JUMP_FUNCTION, NullCallWrapper(), call_kind);
+      stub_compiler_->GenerateJumpFunctionIgnoreReceiver(fun);
     }

     // Deferred code for fast API call case---clean preallocated space.
@@ -822,7 +817,7 @@
     __ j(not_equal, interceptor_succeeded);
   }

-  StubCompiler* stub_compiler_;
+  CallStubCompiler* stub_compiler_;
   const ParameterCount& arguments_;
   Register name_;
   ExtraICState extra_ic_state_;
@@ -1535,6 +1530,15 @@
     __ j(not_equal, miss);
   }
 }
+
+
+void CallStubCompiler::GenerateFunctionCheck(Register function,
+                                             Register scratch,
+                                             Label* miss) {
+  __ JumpIfSmi(function, miss);
+  __ CmpObjectType(function, JS_FUNCTION_TYPE, scratch);
+  __ j(not_equal, miss);
+}


 void CallStubCompiler::GenerateLoadFunctionFromCell(
@@ -1552,9 +1556,7 @@
     // the nice side effect that multiple closures based on the same
     // function can all use this call IC. Before we load through the
     // function, we have to verify that it still is a function.
-    __ JumpIfSmi(rdi, miss);
-    __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rax);
-    __ j(not_equal, miss);
+    GenerateFunctionCheck(rdi, rax, miss);

     // Check the shared function info. Make sure it hasn't changed.
     __ Move(rax, Handle<SharedFunctionInfo>(function->shared()));
@@ -1586,20 +1588,7 @@

   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);
-
-  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);
+  GenerateJumpFunction(object, rdi, &miss);

   HandlerFrontendFooter(&miss);

@@ -2014,8 +2003,7 @@
   __ bind(&miss);
   // Restore function name in rcx.
   __ Move(rcx, name);
-  __ bind(&name_miss);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&name_miss);

   // Return the generated code.
   return GetCode(type, name);
@@ -2080,8 +2068,7 @@
   __ bind(&miss);
   // Restore function name in rcx.
   __ Move(rcx, name);
-  __ bind(&name_miss);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&name_miss);

   // Return the generated code.
   return GetCode(type, name);
@@ -2127,15 +2114,10 @@
   StubRuntimeCallHelper call_helper;
   generator.GenerateSlow(masm(), call_helper);

-  // 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);
+ // We do not have to patch the receiver because the function makes no use of
+  // it.
+  GenerateJumpFunctionIgnoreReceiver(function);

   HandlerFrontendFooter(&miss);

@@ -2238,12 +2220,10 @@
   __ 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);
+ // We do not have to patch the receiver because the function makes no use of
+  // it.
+  GenerateJumpFunctionIgnoreReceiver(function);

   HandlerFrontendFooter(&miss);

@@ -2324,15 +2304,10 @@
   __ MoveDouble(FieldOperand(rax, HeapNumber::kValueOffset), rbx);
   __ 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);
-  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);
+ // We do not have to patch the receiver because the function makes no use of
+  // it.
+  GenerateJumpFunctionIgnoreReceiver(function);

   HandlerFrontendFooter(&miss);

@@ -2390,8 +2365,7 @@
   __ bind(&miss);
   __ addq(rsp, Immediate(kFastApiCallArguments * kPointerSize));

-  __ bind(&miss_before_stack_reserved);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&miss_before_stack_reserved);

   // Return the generated code.
   return GetCode(function);
@@ -2499,39 +2473,18 @@
 }


-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);
-}
+void CallStubCompiler::GenerateJumpFunction(Handle<Object> object,
+                                            Register function,
+                                            Label* miss) {
+  // Check that the function really is a function.
+  GenerateFunctionCheck(function, rbx, miss);

-
-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;
-  }
-
-  Label miss;
-  HandlerFrontendHeader(object, holder, name, check, &miss);
+  if (!function.is(rdi)) __ movq(rdi, function);
   PatchGlobalProxy(object);
-  CompileHandlerBackend(function);
-  HandlerFrontendFooter(&miss);

-  // Return the generated code.
-  return GetCode(function);
+  // Invoke the function.
+  __ InvokeFunction(rdi, arguments(), JUMP_FUNCTION,
+                    NullCallWrapper(), call_kind());
 }


@@ -2555,29 +2508,9 @@
   // 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()) {
-    __ 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);
+  GenerateJumpFunction(object, rax, &miss);

-  // Handle load cache miss.
-  __ bind(&miss);
-  GenerateMissBranch();
+  HandlerFrontendFooter(&miss);

   // Return the generated code.
   return GetCode(Code::FAST, name);
@@ -2600,26 +2533,12 @@

   Label miss;
   HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
+ // Potentially loads a closure that matches the shared function info of the
+  // function, rather than function.
   GenerateLoadFunctionFromCell(cell, function, &miss);
-  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);
-
+  GenerateJumpFunction(object, rdi, function);
   HandlerFrontendFooter(&miss);

   // Return the generated code.

--
--
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