[cleanup] Remove obsolete and broken --log-timer-events

The --log-timer-events doesn't work anymore, since it cannot be enabled
after the snapshot was created ever since the CallApiCallback stub was
turned into a builtin.

Bug: v8:9183
Change-Id: I6e0b92141f1986fc791943ffef42dd4961aea0a1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1617931
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61633}

src/builtins/arm/builtins-arm.cc

@@ -2865,26 +2865,8 @@ void CallApiFunctionAndReturn(MacroAssembler* masm, Register function_address,
   __ add(r6, r6, Operand(1));
   __ str(r6, MemOperand(r9, kLevelOffset));
 
-  if (FLAG_log_timer_events) {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ PushSafepointRegisters();
-    __ PrepareCallCFunction(1);
-    __ Move(r0, ExternalReference::isolate_address(isolate));
-    __ CallCFunction(ExternalReference::log_enter_external_function(), 1);
-    __ PopSafepointRegisters();
-  }
-
   __ StoreReturnAddressAndCall(r3);
 
-  if (FLAG_log_timer_events) {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ PushSafepointRegisters();
-    __ PrepareCallCFunction(1);
-    __ Move(r0, ExternalReference::isolate_address(isolate));
-    __ CallCFunction(ExternalReference::log_leave_external_function(), 1);
-    __ PopSafepointRegisters();
-  }
-
   Label promote_scheduled_exception;
   Label delete_allocated_handles;
   Label leave_exit_frame;

src/builtins/arm64/builtins-arm64.cc

@@ -3442,25 +3442,9 @@ void CallApiFunctionAndReturn(MacroAssembler* masm, Register function_address,
   __ Add(level_reg, level_reg, 1);
   __ Str(level_reg, MemOperand(handle_scope_base, kLevelOffset));
 
-  if (FLAG_log_timer_events) {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ PushSafepointRegisters();
-    __ Mov(x0, ExternalReference::isolate_address(isolate));
-    __ CallCFunction(ExternalReference::log_enter_external_function(), 1);
-    __ PopSafepointRegisters();
-  }
-
   __ Mov(x10, x3);  // TODO(arm64): Load target into x10 directly.
   __ StoreReturnAddressAndCall(x10);
 
-  if (FLAG_log_timer_events) {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ PushSafepointRegisters();
-    __ Mov(x0, ExternalReference::isolate_address(isolate));
-    __ CallCFunction(ExternalReference::log_leave_external_function(), 1);
-    __ PopSafepointRegisters();
-  }
-
   Label promote_scheduled_exception;
   Label delete_allocated_handles;
   Label leave_exit_frame;

src/builtins/ia32/builtins-ia32.cc

@@ -3019,16 +3019,6 @@ void CallApiFunctionAndReturn(MacroAssembler* masm, Register function_address,
   __ mov(esi, __ ExternalReferenceAsOperand(next_address, esi));
   __ mov(edi, __ ExternalReferenceAsOperand(limit_address, edi));
 
-  if (FLAG_log_timer_events) {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ PushSafepointRegisters();
-    __ PrepareCallCFunction(1, eax);
-    __ Move(Operand(esp, 0),
-            Immediate(ExternalReference::isolate_address(isolate)));
-    __ CallCFunction(ExternalReference::log_enter_external_function(), 1);
-    __ PopSafepointRegisters();
-  }
-
   Label profiler_disabled;
   Label end_profiler_check;
   __ Move(eax, Immediate(ExternalReference::is_profiling_address(isolate)));
@@ -3047,16 +3037,6 @@ void CallApiFunctionAndReturn(MacroAssembler* masm, Register function_address,
   __ call(function_address);
   __ bind(&end_profiler_check);
 
-  if (FLAG_log_timer_events) {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ PushSafepointRegisters();
-    __ PrepareCallCFunction(1, eax);
-    __ mov(eax, Immediate(ExternalReference::isolate_address(isolate)));
-    __ mov(Operand(esp, 0), eax);
-    __ CallCFunction(ExternalReference::log_leave_external_function(), 1);
-    __ PopSafepointRegisters();
-  }
-
   Label prologue;
   // Load the value from ReturnValue
   __ mov(eax, return_value_operand);

src/builtins/mips/builtins-mips.cc

@@ -2854,26 +2854,8 @@ void CallApiFunctionAndReturn(MacroAssembler* masm, Register function_address,
   __ Addu(s2, s2, Operand(1));
   __ sw(s2, MemOperand(s5, kLevelOffset));
 
-  if (FLAG_log_timer_events) {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ PushSafepointRegisters();
-    __ PrepareCallCFunction(1, a0);
-    __ li(a0, ExternalReference::isolate_address(isolate));
-    __ CallCFunction(ExternalReference::log_enter_external_function(), 1);
-    __ PopSafepointRegisters();
-  }
-
   __ StoreReturnAddressAndCall(t9);
 
-  if (FLAG_log_timer_events) {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ PushSafepointRegisters();
-    __ PrepareCallCFunction(1, a0);
-    __ li(a0, ExternalReference::isolate_address(isolate));
-    __ CallCFunction(ExternalReference::log_leave_external_function(), 1);
-    __ PopSafepointRegisters();
-  }
-
   Label promote_scheduled_exception;
   Label delete_allocated_handles;
   Label leave_exit_frame;

src/builtins/mips64/builtins-mips64.cc

@@ -2893,26 +2893,8 @@ void CallApiFunctionAndReturn(MacroAssembler* masm, Register function_address,
   __ Addu(s2, s2, Operand(1));
   __ Sw(s2, MemOperand(s5, kLevelOffset));
 
-  if (FLAG_log_timer_events) {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ PushSafepointRegisters();
-    __ PrepareCallCFunction(1, a0);
-    __ li(a0, ExternalReference::isolate_address(isolate));
-    __ CallCFunction(ExternalReference::log_enter_external_function(), 1);
-    __ PopSafepointRegisters();
-  }
-
   __ StoreReturnAddressAndCall(t9);
 
-  if (FLAG_log_timer_events) {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ PushSafepointRegisters();
-    __ PrepareCallCFunction(1, a0);
-    __ li(a0, ExternalReference::isolate_address(isolate));
-    __ CallCFunction(ExternalReference::log_leave_external_function(), 1);
-    __ PopSafepointRegisters();
-  }
-
   Label promote_scheduled_exception;
   Label delete_allocated_handles;
   Label leave_exit_frame;

src/builtins/ppc/builtins-ppc.cc

@@ -2990,26 +2990,8 @@ static void CallApiFunctionAndReturn(MacroAssembler* masm,
   __ addi(r16, r16, Operand(1));
   __ stw(r16, MemOperand(r17, kLevelOffset));
 
-  if (FLAG_log_timer_events) {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ PushSafepointRegisters();
-    __ PrepareCallCFunction(1, r3);
-    __ Move(r3, ExternalReference::isolate_address(isolate));
-    __ CallCFunction(ExternalReference::log_enter_external_function(), 1);
-    __ PopSafepointRegisters();
-  }
-
   __ StoreReturnAddressAndCall(scratch);
 
-  if (FLAG_log_timer_events) {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ PushSafepointRegisters();
-    __ PrepareCallCFunction(1, r3);
-    __ Move(r3, ExternalReference::isolate_address(isolate));
-    __ CallCFunction(ExternalReference::log_leave_external_function(), 1);
-    __ PopSafepointRegisters();
-  }
-
   Label promote_scheduled_exception;
   Label delete_allocated_handles;
   Label leave_exit_frame;

src/builtins/s390/builtins-s390.cc

@@ -3028,26 +3028,8 @@ static void CallApiFunctionAndReturn(MacroAssembler* masm,
   __ AddP(r8, Operand(1));
   __ StoreW(r8, MemOperand(r9, kLevelOffset));
 
-  if (FLAG_log_timer_events) {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ PushSafepointRegisters();
-    __ PrepareCallCFunction(1, r2);
-    __ Move(r2, ExternalReference::isolate_address(isolate));
-    __ CallCFunction(ExternalReference::log_enter_external_function(), 1);
-    __ PopSafepointRegisters();
-  }
-
   __ StoreReturnAddressAndCall(scratch);
 
-  if (FLAG_log_timer_events) {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ PushSafepointRegisters();
-    __ PrepareCallCFunction(1, r2);
-    __ Move(r2, ExternalReference::isolate_address(isolate));
-    __ CallCFunction(ExternalReference::log_leave_external_function(), 1);
-    __ PopSafepointRegisters();
-  }
-
   Label promote_scheduled_exception;
   Label delete_allocated_handles;
   Label leave_exit_frame;

src/builtins/x64/builtins-x64.cc

@@ -3009,15 +3009,6 @@ void CallApiFunctionAndReturn(MacroAssembler* masm, Register function_address,
   __ movq(prev_limit_reg, Operand(base_reg, kLimitOffset));
   __ addl(Operand(base_reg, kLevelOffset), Immediate(1));
 
-  if (FLAG_log_timer_events) {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ PushSafepointRegisters();
-    __ PrepareCallCFunction(1);
-    __ LoadAddress(arg_reg_1, ExternalReference::isolate_address(isolate));
-    __ CallCFunction(ExternalReference::log_enter_external_function(), 1);
-    __ PopSafepointRegisters();
-  }
-
   Label profiler_disabled;
   Label end_profiler_check;
   __ Move(rax, ExternalReference::is_profiling_address(isolate));
@@ -3038,15 +3029,6 @@ void CallApiFunctionAndReturn(MacroAssembler* masm, Register function_address,
   // Call the api function!
   __ call(rax);
 
-  if (FLAG_log_timer_events) {
-    FrameScope frame(masm, StackFrame::MANUAL);
-    __ PushSafepointRegisters();
-    __ PrepareCallCFunction(1);
-    __ LoadAddress(arg_reg_1, ExternalReference::isolate_address(isolate));
-    __ CallCFunction(ExternalReference::log_leave_external_function(), 1);
-    __ PopSafepointRegisters();
-  }
-
   // Load the value from ReturnValue
   __ movq(rax, return_value_operand);
   __ bind(&prologue);

src/external-reference.cc

@@ -338,9 +338,6 @@ FUNCTION_REFERENCE(f64_mod_wrapper_function, f64_mod_wrapper)
 FUNCTION_REFERENCE(wasm_call_trap_callback_for_testing,
                    wasm::call_trap_callback_for_testing)
 
-FUNCTION_REFERENCE(log_enter_external_function, Logger::EnterExternal)
-FUNCTION_REFERENCE(log_leave_external_function, Logger::LeaveExternal)
-
 ExternalReference ExternalReference::isolate_root(Isolate* isolate) {
   return ExternalReference(isolate->isolate_root());
 }

src/external-reference.h

@@ -150,8 +150,6 @@ class StatsCounter;
   V(libc_memcpy_function, "libc_memcpy")                                      \
   V(libc_memmove_function, "libc_memmove")                                    \
   V(libc_memset_function, "libc_memset")                                      \
-  V(log_enter_external_function, "Logger::EnterExternal")                     \
-  V(log_leave_external_function, "Logger::LeaveExternal")                     \
   V(mod_two_doubles_operation, "mod_two_doubles")                             \
   V(new_deoptimizer_function, "Deoptimizer::New()")                           \
   V(orderedhashmap_gethash_raw, "orderedhashmap_gethash_raw")                 \

src/flag-definitions.h

@@ -1384,9 +1384,6 @@ DEFINE_IMPLICATION(perf_prof, perf_prof_unwinding_info)
 DEFINE_STRING(gc_fake_mmap, "/tmp/__v8_gc__",
               "Specify the name of the file for fake gc mmap used in ll_prof")
 DEFINE_BOOL(log_internal_timer_events, false, "Time internal events.")
-DEFINE_BOOL(log_timer_events, false,
-            "Time events including external callbacks.")
-DEFINE_IMPLICATION(log_timer_events, log_internal_timer_events)
 DEFINE_IMPLICATION(log_internal_timer_events, prof)
 DEFINE_BOOL(log_instruction_stats, false, "Log AArch64 instruction statistics.")
 DEFINE_STRING(log_instruction_file, "arm64_inst.csv",

src/log.cc

@@ -1065,22 +1065,6 @@ void Logger::TimerEvent(Logger::StartEnd se, const char* name) {
   msg.WriteToLogFile();
 }
 
-// static
-void Logger::EnterExternal(Isolate* isolate) {
-  DCHECK(FLAG_log_internal_timer_events);
-  LOG(isolate, TimerEvent(START, TimerEventExternal::name()));
-  DCHECK(isolate->current_vm_state() == JS);
-  isolate->set_current_vm_state(EXTERNAL);
-}
-
-// static
-void Logger::LeaveExternal(Isolate* isolate) {
-  DCHECK(FLAG_log_internal_timer_events);
-  LOG(isolate, TimerEvent(END, TimerEventExternal::name()));
-  DCHECK(isolate->current_vm_state() == EXTERNAL);
-  isolate->set_current_vm_state(JS);
-}
-
 bool Logger::is_logging() {
   // Disable logging while the CPU profiler is running.
   if (isolate_->is_profiling()) return false;

src/log.h

@@ -352,8 +352,7 @@ class Logger : public CodeEventListener {
   V(CompileCode, true)           \
   V(CompileCodeBackground, true) \
   V(DeoptimizeCode, true)        \
-  V(Execute, true)               \
-  V(External, true)
+  V(Execute, true)
 
 #define V(TimerName, expose)                          \
   class TimerEvent##TimerName : public AllStatic {    \

src/vm-state-inl.h

@@ -43,18 +43,12 @@ inline const char* StateToString(StateTag state) {
 template <StateTag Tag>
 VMState<Tag>::VMState(Isolate* isolate)
     : isolate_(isolate), previous_tag_(isolate->current_vm_state()) {
-  if (FLAG_log_timer_events && previous_tag_ != EXTERNAL && Tag == EXTERNAL) {
-    LOG(isolate_, TimerEvent(Logger::START, TimerEventExternal::name()));
-  }
   isolate_->set_current_vm_state(Tag);
 }
 
 
 template <StateTag Tag>
 VMState<Tag>::~VMState() {
-  if (FLAG_log_timer_events && previous_tag_ != EXTERNAL && Tag == EXTERNAL) {
-    LOG(isolate_, TimerEvent(Logger::END, TimerEventExternal::name()));
-  }
   isolate_->set_current_vm_state(previous_tag_);
 }