| Index: src/runtime-profiler.cc
|
| diff --git a/src/runtime-profiler.cc b/src/runtime-profiler.cc
|
| index 6500b9acb83f06065a08ff6171b050c5c8973c9d..3c0b5910d398f7984967c1e8136853f252882c01 100644
|
| --- a/src/runtime-profiler.cc
|
| +++ b/src/runtime-profiler.cc
|
| @@ -114,7 +114,6 @@ void RuntimeProfiler::Optimize(JSFunction* function, const char* reason) {
|
| // TODO(4280): Fix this to check function is compiled to baseline once we
|
| // have a standard way to check that. For now, if baseline code doesn't have
|
| // a bytecode array.
|
| - DCHECK(!function->shared()->HasBytecodeArray());
|
| function->AttemptConcurrentOptimization();
|
| }
|
|
|
| @@ -253,7 +252,7 @@ void RuntimeProfiler::MaybeOptimizeFullCodegen(JSFunction* function,
|
| }
|
| }
|
|
|
| -void RuntimeProfiler::MaybeOptimizeIgnition(JSFunction* function) {
|
| +void RuntimeProfiler::MaybeBaselineIgnition(JSFunction* function) {
|
| if (function->IsInOptimizationQueue()) return;
|
|
|
| SharedFunctionInfo* shared = function->shared();
|
| @@ -261,8 +260,6 @@ void RuntimeProfiler::MaybeOptimizeIgnition(JSFunction* function) {
|
|
|
| // TODO(rmcilroy): Also ensure we only OSR top-level code if it is smaller
|
| // than kMaxToplevelSourceSize.
|
| - // TODO(rmcilroy): Consider whether we should optimize small functions when
|
| - // they are first seen on the stack (e.g., kMaxSizeEarlyOpt).
|
|
|
| if (function->IsMarkedForBaseline() || function->IsMarkedForOptimization() ||
|
| function->IsMarkedForConcurrentOptimization() ||
|
| @@ -283,6 +280,58 @@ void RuntimeProfiler::MaybeOptimizeIgnition(JSFunction* function) {
|
| }
|
| }
|
|
|
| +void RuntimeProfiler::MaybeOptimizeIgnition(JSFunction* function) {
|
| + if (function->IsInOptimizationQueue()) return;
|
| +
|
| + SharedFunctionInfo* shared = function->shared();
|
| + int ticks = shared->profiler_ticks();
|
| +
|
| + // TODO(rmcilroy): Also ensure we only OSR top-level code if it is smaller
|
| + // than kMaxToplevelSourceSize.
|
| + if (function->IsMarkedForBaseline() || function->IsMarkedForOptimization() ||
|
| + function->IsMarkedForConcurrentOptimization() ||
|
| + function->IsOptimized()) {
|
| + // TODO(rmcilroy): Support OSR in these cases.
|
| + return;
|
| + }
|
| +
|
| + if (shared->optimization_disabled()) {
|
| + if (shared->deopt_count() >= FLAG_max_opt_count) {
|
| + // If optimization was disabled due to many deoptimizations,
|
| + // then check if the function is hot and try to reenable optimization.
|
| + if (ticks >= kProfilerTicksBeforeReenablingOptimization) {
|
| + shared->set_profiler_ticks(0);
|
| + shared->TryReenableOptimization();
|
| + }
|
| + }
|
| + return;
|
| + }
|
| + if (function->IsOptimized()) return;
|
| +
|
| + if (ticks >= kProfilerTicksBeforeOptimization) {
|
| + int typeinfo, generic, total, type_percentage, generic_percentage;
|
| + GetICCounts(function, &typeinfo, &generic, &total, &type_percentage,
|
| + &generic_percentage);
|
| + if (type_percentage >= FLAG_type_info_threshold &&
|
| + generic_percentage <= FLAG_generic_ic_threshold) {
|
| + // If this particular function hasn't had any ICs patched for enough
|
| + // ticks, optimize it now.
|
| + Optimize(function, "hot and stable");
|
| + } else if (ticks >= kTicksWhenNotEnoughTypeInfo) {
|
| + Optimize(function, "not much type info but very hot");
|
| + } else {
|
| + if (FLAG_trace_opt_verbose) {
|
| + PrintF("[not yet optimizing ");
|
| + function->PrintName();
|
| + PrintF(", not enough type info: %d/%d (%d%%)]\n", typeinfo, total,
|
| + type_percentage);
|
| + }
|
| + }
|
| + }
|
| + // TODO(rmcilroy): Consider whether we should optimize small functions when
|
| + // they are first seen on the stack (e.g., kMaxSizeEarlyOpt).
|
| +}
|
| +
|
| void RuntimeProfiler::MarkCandidatesForOptimization() {
|
| HandleScope scope(isolate_);
|
|
|
| @@ -311,10 +360,18 @@ void RuntimeProfiler::MarkCandidatesForOptimization() {
|
| }
|
| }
|
|
|
| + Compiler::CompilationTier next_tier =
|
| + Compiler::NextCompilationTier(function);
|
| if (frame->is_interpreted()) {
|
| - DCHECK(!frame->is_optimized());
|
| - MaybeOptimizeIgnition(function);
|
| + if (next_tier == Compiler::BASELINE) {
|
| + DCHECK(!frame->is_optimized());
|
| + MaybeBaselineIgnition(function);
|
| + } else {
|
| + DCHECK_EQ(next_tier, Compiler::OPTIMIZED);
|
| + MaybeOptimizeIgnition(function);
|
| + }
|
| } else {
|
| + DCHECK_EQ(next_tier, Compiler::OPTIMIZED);
|
| MaybeOptimizeFullCodegen(function, frame_count, frame->is_optimized());
|
| }
|
| }
|
|
|