diff options
Diffstat (limited to 'deps/v8/src/runtime-profiler.cc')
| -rw-r--r-- | deps/v8/src/runtime-profiler.cc | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/deps/v8/src/runtime-profiler.cc b/deps/v8/src/runtime-profiler.cc index 568e48e41..b06168a24 100644 --- a/deps/v8/src/runtime-profiler.cc +++ b/deps/v8/src/runtime-profiler.cc @@ -94,14 +94,12 @@ RuntimeProfiler::RuntimeProfiler(Isolate* isolate) sampler_threshold_size_factor_(kSamplerThresholdSizeFactorInit), sampler_ticks_until_threshold_adjustment_( kSamplerTicksBetweenThresholdAdjustment), - sampler_window_position_(0), - any_ic_changed_(false), - code_generated_(false) { + sampler_window_position_(0) { ClearSampleBuffer(); } -void RuntimeProfiler::GlobalSetUp() { +void RuntimeProfiler::GlobalSetup() { ASSERT(!has_been_globally_set_up_); enabled_ = V8::UseCrankshaft() && FLAG_opt; #ifdef DEBUG @@ -181,10 +179,14 @@ void RuntimeProfiler::AttemptOnStackReplacement(JSFunction* function) { // prepared to generate it, but we don't expect to have to. bool found_code = false; Code* stack_check_code = NULL; +#if defined(V8_TARGET_ARCH_IA32) || \ + defined(V8_TARGET_ARCH_ARM) || \ + defined(V8_TARGET_ARCH_MIPS) if (FLAG_count_based_interrupts) { InterruptStub interrupt_stub; found_code = interrupt_stub.FindCodeInCache(&stack_check_code); } else // NOLINT +#endif { // NOLINT StackCheckStub check_stub; found_code = check_stub.FindCodeInCache(&stack_check_code); @@ -313,6 +315,14 @@ void RuntimeProfiler::OptimizeNow() { // If no IC was patched since the last tick and this function is very // small, optimistically optimize it now. Optimize(function, "small function"); + } else if (!code_generated_ && + !any_ic_changed_ && + total_code_generated_ > 0 && + total_code_generated_ < 2000) { + // If no code was generated and no IC was patched since the last tick, + // but a little code has already been generated since last Reset(), + // then type info might already be stable and we can optimize now. + Optimize(function, "stable on startup"); } else { shared_code->set_profiler_ticks(ticks + 1); } @@ -333,6 +343,7 @@ void RuntimeProfiler::OptimizeNow() { } if (FLAG_watch_ic_patching) { any_ic_changed_ = false; + code_generated_ = false; } else { // !FLAG_watch_ic_patching // Add the collected functions as samples. It's important not to do // this as part of collecting them because this will interfere with @@ -345,7 +356,11 @@ void RuntimeProfiler::OptimizeNow() { void RuntimeProfiler::NotifyTick() { +#if defined(V8_TARGET_ARCH_IA32) || \ + defined(V8_TARGET_ARCH_ARM) || \ + defined(V8_TARGET_ARCH_MIPS) if (FLAG_count_based_interrupts) return; +#endif isolate_->stack_guard()->RequestRuntimeProfilerTick(); } @@ -362,7 +377,9 @@ void RuntimeProfiler::SetUp() { void RuntimeProfiler::Reset() { - if (!FLAG_watch_ic_patching) { + if (FLAG_watch_ic_patching) { + total_code_generated_ = 0; + } else { // !FLAG_watch_ic_patching sampler_threshold_ = kSamplerThresholdInit; sampler_threshold_size_factor_ = kSamplerThresholdSizeFactorInit; sampler_ticks_until_threshold_adjustment_ = |