Type Feedback Vector: Calculate profiler counts on the fly.

src/x64/code-stubs-x64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
 #include "src/ic/handler-compiler.h"
@@ skipping 1918 matching lines @@
 }
 
 
 void CallICStub::Generate(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   // -- rdi - function
   // -- rdx - slot id
   // -- rbx - vector
   // -----------------------------------
   Isolate* isolate = masm->isolate();
-  const int with_types_offset =
-      FixedArray::OffsetOfElementAt(TypeFeedbackVector::kWithTypesIndex);
-  const int generic_offset =
-      FixedArray::OffsetOfElementAt(TypeFeedbackVector::kGenericCountIndex);
   Label extra_checks_or_miss, call, call_function;
   int argc = arg_count();
   StackArgumentsAccessor args(rsp, argc);
   ParameterCount actual(argc);
 
   // The checks. First, does rdi match the recorded monomorphic target?
   __ SmiToInteger32(rdx, rdx);
   __ movp(rcx,
           FieldOperand(rbx, rdx, times_pointer_size, FixedArray::kHeaderSize));
 
@@ skipping 53 matching lines @@
   __ Cmp(rcx, TypeFeedbackVector::UninitializedSentinel(isolate));
   __ j(equal, &uninitialized);
 
   // We are going megamorphic. If the feedback is a JSFunction, it is fine
   // to handle it here. More complex cases are dealt with in the runtime.
   __ AssertNotSmi(rcx);
   __ CmpObjectType(rcx, JS_FUNCTION_TYPE, rcx);
   __ j(not_equal, &miss);
   __ Move(FieldOperand(rbx, rdx, times_pointer_size, FixedArray::kHeaderSize),
           TypeFeedbackVector::MegamorphicSentinel(isolate));
-  // We have to update statistics for runtime profiling.
-  __ SmiAddConstant(FieldOperand(rbx, with_types_offset), Smi::FromInt(-1));
-  __ SmiAddConstant(FieldOperand(rbx, generic_offset), Smi::FromInt(1));
 
   __ bind(&call);
   __ Set(rax, argc);
   __ Jump(masm->isolate()->builtins()->Call(convert_mode()),
           RelocInfo::CODE_TARGET);
 
   __ bind(&uninitialized);
 
   // We are going monomorphic, provided we actually have a JSFunction.
   __ JumpIfSmi(rdi, &miss);
 
   // Goto miss case if we do not have a function.
   __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rcx);
   __ j(not_equal, &miss);
 
   // Make sure the function is not the Array() function, which requires special
   // behavior on MISS.
   __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, rcx);
   __ cmpp(rdi, rcx);
   __ j(equal, &miss);
 
   // Make sure the function belongs to the same native context.
   __ movp(rcx, FieldOperand(rdi, JSFunction::kContextOffset));
   __ movp(rcx, ContextOperand(rcx, Context::NATIVE_CONTEXT_INDEX));
   __ cmpp(rcx, NativeContextOperand());
   __ j(not_equal, &miss);
 
-  // Update stats.
-  __ SmiAddConstant(FieldOperand(rbx, with_types_offset), Smi::FromInt(1));
-
   // Initialize the call counter.
   __ Move(FieldOperand(rbx, rdx, times_pointer_size,
                        FixedArray::kHeaderSize + kPointerSize),
           Smi::FromInt(CallICNexus::kCallCountIncrement));
 
   // Store the function. Use a stub since we need a frame for allocation.
   // rbx - vector
   // rdx - slot (needs to be in smi form)
   // rdi - function
   {
@@ skipping 3344 matching lines @@
                            kStackSpace, nullptr, return_value_operand, NULL);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64