Update V8 to r7427: Initial merge by git
As required by WebKit r82507
Change-Id: I7ae83ef3f689356043b4929255b7c1dd31d8c5df
diff --git a/src/compiler.cc b/src/compiler.cc
index 667432f..1ec4414 100755
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -51,7 +51,8 @@
CompilationInfo::CompilationInfo(Handle<Script> script)
- : flags_(0),
+ : isolate_(script->GetIsolate()),
+ flags_(0),
function_(NULL),
scope_(NULL),
script_(script),
@@ -64,7 +65,8 @@
CompilationInfo::CompilationInfo(Handle<SharedFunctionInfo> shared_info)
- : flags_(IsLazy::encode(true)),
+ : isolate_(shared_info->GetIsolate()),
+ flags_(IsLazy::encode(true)),
function_(NULL),
scope_(NULL),
shared_info_(shared_info),
@@ -78,7 +80,8 @@
CompilationInfo::CompilationInfo(Handle<JSFunction> closure)
- : flags_(IsLazy::encode(true)),
+ : isolate_(closure->GetIsolate()),
+ flags_(IsLazy::encode(true)),
function_(NULL),
scope_(NULL),
closure_(closure),
@@ -121,10 +124,11 @@
// break points has actually been set.
static bool AlwaysFullCompiler() {
#ifdef ENABLE_DEBUGGER_SUPPORT
+ Isolate* isolate = Isolate::Current();
if (V8::UseCrankshaft()) {
- return FLAG_always_full_compiler || Debug::has_break_points();
+ return FLAG_always_full_compiler || isolate->debug()->has_break_points();
} else {
- return FLAG_always_full_compiler || Debugger::IsDebuggerActive();
+ return FLAG_always_full_compiler || isolate->debugger()->IsDebuggerActive();
}
#else
return FLAG_always_full_compiler;
@@ -172,6 +176,8 @@
ASSERT(code->kind() == Code::FUNCTION);
code->set_optimizable(false);
info->SetCode(code);
+ Isolate* isolate = code->GetIsolate();
+ isolate->compilation_cache()->MarkForLazyOptimizing(info->closure());
if (FLAG_trace_opt) {
PrintF("[disabled optimization for: ");
info->closure()->PrintName();
@@ -197,6 +203,10 @@
Handle<Code> code(info->shared_info()->code());
ASSERT(code->kind() == Code::FUNCTION);
+ // We should never arrive here if optimization has been disabled on the
+ // shared function info.
+ ASSERT(!info->shared_info()->optimization_disabled());
+
// Fall back to using the full code generator if it's not possible
// to use the Hydrogen-based optimizing compiler. We already have
// generated code for this from the shared function object.
@@ -248,7 +258,7 @@
// performance of the hydrogen-based compiler.
int64_t start = OS::Ticks();
bool should_recompile = !info->shared_info()->has_deoptimization_support();
- if (should_recompile || FLAG_time_hydrogen) {
+ if (should_recompile || FLAG_hydrogen_stats) {
HPhase phase(HPhase::kFullCodeGen);
CompilationInfo unoptimized(info->shared_info());
// Note that we use the same AST that we will use for generating the
@@ -286,7 +296,7 @@
HGraphBuilder builder(info, &oracle);
HPhase phase(HPhase::kTotal);
HGraph* graph = builder.CreateGraph();
- if (Top::has_pending_exception()) {
+ if (info->isolate()->has_pending_exception()) {
info->SetCode(Handle<Code>::null());
return false;
}
@@ -364,11 +374,12 @@
static Handle<SharedFunctionInfo> MakeFunctionInfo(CompilationInfo* info) {
CompilationZoneScope zone_scope(DELETE_ON_EXIT);
- PostponeInterruptsScope postpone;
+ Isolate* isolate = info->isolate();
+ PostponeInterruptsScope postpone(isolate);
- ASSERT(!i::Top::global_context().is_null());
+ ASSERT(!isolate->global_context().is_null());
Handle<Script> script = info->script();
- script->set_context_data((*i::Top::global_context())->data());
+ script->set_context_data((*isolate->global_context())->data());
#ifdef ENABLE_DEBUGGER_SUPPORT
if (info->is_eval()) {
@@ -381,15 +392,16 @@
if (!it.done()) {
script->set_eval_from_shared(
JSFunction::cast(it.frame()->function())->shared());
+ Code* code = it.frame()->LookupCode(isolate);
int offset = static_cast<int>(
- it.frame()->pc() - it.frame()->code()->instruction_start());
+ it.frame()->pc() - code->instruction_start());
script->set_eval_from_instructions_offset(Smi::FromInt(offset));
}
}
}
// Notify debugger
- Debugger::OnBeforeCompile(script);
+ isolate->debugger()->OnBeforeCompile(script);
#endif
// Only allow non-global compiles for eval.
@@ -401,22 +413,22 @@
// rest of the function into account to avoid overlap with the
// parsing statistics.
HistogramTimer* rate = info->is_eval()
- ? &Counters::compile_eval
- : &Counters::compile;
+ ? info->isolate()->counters()->compile_eval()
+ : info->isolate()->counters()->compile();
HistogramTimerScope timer(rate);
// Compile the code.
FunctionLiteral* lit = info->function();
- LiveEditFunctionTracker live_edit_tracker(lit);
+ LiveEditFunctionTracker live_edit_tracker(isolate, lit);
if (!MakeCode(info)) {
- Top::StackOverflow();
+ isolate->StackOverflow();
return Handle<SharedFunctionInfo>::null();
}
// Allocate function.
ASSERT(!info->code().is_null());
Handle<SharedFunctionInfo> result =
- Factory::NewSharedFunctionInfo(
+ isolate->factory()->NewSharedFunctionInfo(
lit->name(),
lit->materialized_literal_count(),
info->code(),
@@ -426,7 +438,7 @@
Compiler::SetFunctionInfo(result, lit, true, script);
if (script->name()->IsString()) {
- PROFILE(CodeCreateEvent(
+ PROFILE(isolate, CodeCreateEvent(
info->is_eval()
? Logger::EVAL_TAG
: Logger::ToNativeByScript(Logger::SCRIPT_TAG, *script),
@@ -437,13 +449,13 @@
script,
info->code()));
} else {
- PROFILE(CodeCreateEvent(
+ PROFILE(isolate, CodeCreateEvent(
info->is_eval()
? Logger::EVAL_TAG
: Logger::ToNativeByScript(Logger::SCRIPT_TAG, *script),
*info->code(),
*result,
- Heap::empty_string()));
+ isolate->heap()->empty_string()));
GDBJIT(AddCode(Handle<String>(), script, info->code()));
}
@@ -454,7 +466,8 @@
#ifdef ENABLE_DEBUGGER_SUPPORT
// Notify debugger
- Debugger::OnAfterCompile(script, Debugger::NO_AFTER_COMPILE_FLAGS);
+ isolate->debugger()->OnAfterCompile(
+ script, Debugger::NO_AFTER_COMPILE_FLAGS);
#endif
live_edit_tracker.RecordFunctionInfo(result, lit);
@@ -471,20 +484,23 @@
ScriptDataImpl* input_pre_data,
Handle<Object> script_data,
NativesFlag natives) {
+ Isolate* isolate = source->GetIsolate();
int source_length = source->length();
- Counters::total_load_size.Increment(source_length);
- Counters::total_compile_size.Increment(source_length);
+ isolate->counters()->total_load_size()->Increment(source_length);
+ isolate->counters()->total_compile_size()->Increment(source_length);
// The VM is in the COMPILER state until exiting this function.
- VMState state(COMPILER);
+ VMState state(isolate, COMPILER);
+
+ CompilationCache* compilation_cache = isolate->compilation_cache();
// Do a lookup in the compilation cache but not for extensions.
Handle<SharedFunctionInfo> result;
if (extension == NULL) {
- result = CompilationCache::LookupScript(source,
- script_name,
- line_offset,
- column_offset);
+ result = compilation_cache->LookupScript(source,
+ script_name,
+ line_offset,
+ column_offset);
}
if (result.is_null()) {
@@ -510,7 +526,7 @@
}
// Create a script object describing the script to be compiled.
- Handle<Script> script = Factory::NewScript(source);
+ Handle<Script> script = FACTORY->NewScript(source);
if (natives == NATIVES_CODE) {
script->set_type(Smi::FromInt(Script::TYPE_NATIVE));
}
@@ -520,7 +536,7 @@
script->set_column_offset(Smi::FromInt(column_offset));
}
- script->set_data(script_data.is_null() ? Heap::undefined_value()
+ script->set_data(script_data.is_null() ? HEAP->undefined_value()
: *script_data);
// Compile the function and add it to the cache.
@@ -528,9 +544,10 @@
info.MarkAsGlobal();
info.SetExtension(extension);
info.SetPreParseData(pre_data);
+ if (natives == NATIVES_CODE) info.MarkAsAllowingNativesSyntax();
result = MakeFunctionInfo(&info);
if (extension == NULL && !result.is_null()) {
- CompilationCache::PutScript(source, result);
+ compilation_cache->PutScript(source, result);
}
// Get rid of the pre-parsing data (if necessary).
@@ -539,7 +556,7 @@
}
}
- if (result.is_null()) Top::ReportPendingMessages();
+ if (result.is_null()) isolate->ReportPendingMessages();
return result;
}
@@ -548,24 +565,26 @@
Handle<Context> context,
bool is_global,
StrictModeFlag strict_mode) {
+ Isolate* isolate = source->GetIsolate();
int source_length = source->length();
- Counters::total_eval_size.Increment(source_length);
- Counters::total_compile_size.Increment(source_length);
+ isolate->counters()->total_eval_size()->Increment(source_length);
+ isolate->counters()->total_compile_size()->Increment(source_length);
// The VM is in the COMPILER state until exiting this function.
- VMState state(COMPILER);
+ VMState state(isolate, COMPILER);
// Do a lookup in the compilation cache; if the entry is not there, invoke
// the compiler and add the result to the cache.
Handle<SharedFunctionInfo> result;
- result = CompilationCache::LookupEval(source,
- context,
- is_global,
- strict_mode);
+ CompilationCache* compilation_cache = isolate->compilation_cache();
+ result = compilation_cache->LookupEval(source,
+ context,
+ is_global,
+ strict_mode);
if (result.is_null()) {
// Create a script object describing the script to be compiled.
- Handle<Script> script = Factory::NewScript(source);
+ Handle<Script> script = isolate->factory()->NewScript(source);
CompilationInfo info(script);
info.MarkAsEval();
if (is_global) info.MarkAsGlobal();
@@ -573,11 +592,12 @@
info.SetCallingContext(context);
result = MakeFunctionInfo(&info);
if (!result.is_null()) {
+ CompilationCache* compilation_cache = isolate->compilation_cache();
// If caller is strict mode, the result must be strict as well,
// but not the other way around. Consider:
// eval("'use strict'; ...");
ASSERT(strict_mode == kNonStrictMode || result->strict_mode());
- CompilationCache::PutEval(source, context, is_global, result);
+ compilation_cache->PutEval(source, context, is_global, result);
}
}
@@ -589,29 +609,35 @@
CompilationZoneScope zone_scope(DELETE_ON_EXIT);
// The VM is in the COMPILER state until exiting this function.
- VMState state(COMPILER);
+ VMState state(info->isolate(), COMPILER);
- PostponeInterruptsScope postpone;
+ Isolate* isolate = info->isolate();
+ PostponeInterruptsScope postpone(isolate);
Handle<SharedFunctionInfo> shared = info->shared_info();
int compiled_size = shared->end_position() - shared->start_position();
- Counters::total_compile_size.Increment(compiled_size);
+ isolate->counters()->total_compile_size()->Increment(compiled_size);
// Generate the AST for the lazily compiled function.
if (ParserApi::Parse(info)) {
// Measure how long it takes to do the lazy compilation; only take the
// rest of the function into account to avoid overlap with the lazy
// parsing statistics.
- HistogramTimerScope timer(&Counters::compile_lazy);
+ HistogramTimerScope timer(isolate->counters()->compile_lazy());
// Compile the code.
if (!MakeCode(info)) {
- if (!Top::has_pending_exception()) {
- Top::StackOverflow();
+ if (!isolate->has_pending_exception()) {
+ isolate->StackOverflow();
}
} else {
ASSERT(!info->code().is_null());
Handle<Code> code = info->code();
+ // Set optimizable to false if this is disallowed by the shared
+ // function info, e.g., we might have flushed the code and must
+ // reset this bit when lazy compiling the code again.
+ if (shared->optimization_disabled()) code->set_optimizable(false);
+
Handle<JSFunction> function = info->closure();
RecordFunctionCompilation(Logger::LAZY_COMPILE_TAG, info, shared);
@@ -648,16 +674,18 @@
ASSERT(shared->is_compiled());
shared->set_code_age(0);
- if (V8::UseCrankshaft() && info->AllowOptimize()) {
+ if (info->AllowOptimize() && !shared->optimization_disabled()) {
// If we're asked to always optimize, we compile the optimized
// version of the function right away - unless the debugger is
// active as it makes no sense to compile optimized code then.
- if (FLAG_always_opt && !Debug::has_break_points()) {
+ if (FLAG_always_opt &&
+ !Isolate::Current()->debug()->has_break_points()) {
CompilationInfo optimized(function);
optimized.SetOptimizing(AstNode::kNoNumber);
return CompileLazy(&optimized);
- } else if (CompilationCache::ShouldOptimizeEagerly(function)) {
- RuntimeProfiler::OptimizeSoon(*function);
+ } else if (isolate->compilation_cache()->ShouldOptimizeEagerly(
+ function)) {
+ isolate->runtime_profiler()->OptimizeSoon(*function);
}
}
}
@@ -678,20 +706,20 @@
info.SetFunction(literal);
info.SetScope(literal->scope());
- LiveEditFunctionTracker live_edit_tracker(literal);
+ LiveEditFunctionTracker live_edit_tracker(info.isolate(), literal);
// Determine if the function can be lazily compiled. This is necessary to
// allow some of our builtin JS files to be lazily compiled. These
// builtins cannot be handled lazily by the parser, since we have to know
// if a function uses the special natives syntax, which is something the
// parser records.
bool allow_lazy = literal->AllowsLazyCompilation() &&
- !LiveEditFunctionTracker::IsActive();
+ !LiveEditFunctionTracker::IsActive(info.isolate());
Handle<SerializedScopeInfo> scope_info(SerializedScopeInfo::Empty());
// Generate code
if (FLAG_lazy && allow_lazy) {
- Handle<Code> code(Builtins::builtin(Builtins::LazyCompile));
+ Handle<Code> code = info.isolate()->builtins()->LazyCompile();
info.SetCode(code);
} else {
if (V8::UseCrankshaft()) {
@@ -726,7 +754,7 @@
// Create a shared function info object.
Handle<SharedFunctionInfo> result =
- Factory::NewSharedFunctionInfo(literal->name(),
+ FACTORY->NewSharedFunctionInfo(literal->name(),
literal->materialized_literal_count(),
info.code(),
scope_info);
@@ -778,20 +806,23 @@
// Log the code generation. If source information is available include
// script name and line number. Check explicitly whether logging is
// enabled as finding the line number is not free.
- if (Logger::is_logging() || CpuProfiler::is_profiling()) {
+ if (info->isolate()->logger()->is_logging() || CpuProfiler::is_profiling()) {
Handle<Script> script = info->script();
Handle<Code> code = info->code();
- if (*code == Builtins::builtin(Builtins::LazyCompile)) return;
+ if (*code == info->isolate()->builtins()->builtin(Builtins::kLazyCompile))
+ return;
if (script->name()->IsString()) {
int line_num = GetScriptLineNumber(script, shared->start_position()) + 1;
USE(line_num);
- PROFILE(CodeCreateEvent(Logger::ToNativeByScript(tag, *script),
+ PROFILE(info->isolate(),
+ CodeCreateEvent(Logger::ToNativeByScript(tag, *script),
*code,
*shared,
String::cast(script->name()),
line_num));
} else {
- PROFILE(CodeCreateEvent(Logger::ToNativeByScript(tag, *script),
+ PROFILE(info->isolate(),
+ CodeCreateEvent(Logger::ToNativeByScript(tag, *script),
*code,
*shared,
shared->DebugName()));