1 // Copyright 2016 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #include "src/crankshaft/compilation-phase.h"
6 
7 #include "src/crankshaft/hydrogen.h"
8 #include "src/isolate.h"
9 
10 namespace v8 {
11 namespace internal {
12 
CompilationPhase(const char * name,CompilationInfo * info)13 CompilationPhase::CompilationPhase(const char* name, CompilationInfo* info)
14     : name_(name), info_(info), zone_(info->isolate()->allocator(), ZONE_NAME) {
15   if (FLAG_hydrogen_stats) {
16     info_zone_start_allocation_size_ = info->zone()->allocation_size();
17     timer_.Start();
18   }
19 }
20 
~CompilationPhase()21 CompilationPhase::~CompilationPhase() {
22   if (FLAG_hydrogen_stats) {
23     size_t size = zone()->allocation_size();
24     size += info_->zone()->allocation_size() - info_zone_start_allocation_size_;
25     isolate()->GetHStatistics()->SaveTiming(name_, timer_.Elapsed(), size);
26   }
27 }
28 
ShouldProduceTraceOutput() const29 bool CompilationPhase::ShouldProduceTraceOutput() const {
30   // Trace if the appropriate trace flag is set and the phase name's first
31   // character is in the FLAG_trace_phase command line parameter.
32   AllowHandleDereference allow_deref;
33   bool tracing_on =
34       info()->IsStub()
35           ? FLAG_trace_hydrogen_stubs
36           : (FLAG_trace_hydrogen &&
37              info()->shared_info()->PassesFilter(FLAG_trace_hydrogen_filter));
38   return (tracing_on &&
39           base::OS::StrChr(const_cast<char*>(FLAG_trace_phase), name_[0]) !=
40               NULL);
41 }
42 
43 }  // namespace internal
44 }  // namespace v8
45