diff options
Diffstat (limited to 'chromium/v8/src/deoptimizer.cc')
| -rw-r--r-- | chromium/v8/src/deoptimizer.cc | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/chromium/v8/src/deoptimizer.cc b/chromium/v8/src/deoptimizer.cc index 76f2fa9bd76..6c3100a6381 100644 --- a/chromium/v8/src/deoptimizer.cc +++ b/chromium/v8/src/deoptimizer.cc @@ -393,9 +393,33 @@ void Deoptimizer::DeoptimizeMarkedCodeForContext(Context* context) { element = next; } +#ifdef DEBUG + // Make sure all activations of optimized code can deopt at their current PC. + for (StackFrameIterator it(isolate, isolate->thread_local_top()); + !it.done(); it.Advance()) { + StackFrame::Type type = it.frame()->type(); + if (type == StackFrame::OPTIMIZED) { + Code* code = it.frame()->LookupCode(); + if (FLAG_trace_deopt) { + JSFunction* function = + static_cast<OptimizedFrame*>(it.frame())->function(); + CodeTracer::Scope scope(isolate->GetCodeTracer()); + PrintF(scope.file(), "[deoptimizer patches for lazy deopt: "); + function->PrintName(scope.file()); + PrintF(scope.file(), + " / %" V8PRIxPTR "]\n", reinterpret_cast<intptr_t>(function)); + } + SafepointEntry safepoint = code->GetSafepointEntry(it.frame()->pc()); + int deopt_index = safepoint.deoptimization_index(); + CHECK(deopt_index != Safepoint::kNoDeoptimizationIndex); + } + } +#endif + // TODO(titzer): we need a handle scope only because of the macro assembler, // which is only used in EnsureCodeForDeoptimizationEntry. HandleScope scope(isolate); + // Now patch all the codes for deoptimization. for (int i = 0; i < codes.length(); i++) { // It is finally time to die, code object. |