Version 3.23.16
Array builtins need to be prevented from changing frozen objects, and changing structure on sealed objects (Chromium issue 299979).
Performance and stability improvements on all platforms.
git-svn-id: http://v8.googlecode.com/svn/trunk@18178 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/ia32/code-stubs-ia32.cc b/src/ia32/code-stubs-ia32.cc
index 715feca..f0dcf71 100644
--- a/src/ia32/code-stubs-ia32.cc
+++ b/src/ia32/code-stubs-ia32.cc
@@ -2952,18 +2952,11 @@
}
-bool CEntryStub::IsPregenerated(Isolate* isolate) {
- return (!save_doubles_ || isolate->fp_stubs_generated()) &&
- result_size_ == 1;
-}
-
-
void CodeStub::GenerateStubsAheadOfTime(Isolate* isolate) {
CEntryStub::GenerateAheadOfTime(isolate);
StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime(isolate);
StubFailureTrampolineStub::GenerateAheadOfTime(isolate);
// It is important that the store buffer overflow stubs are generated first.
- RecordWriteStub::GenerateFixedRegStubsAheadOfTime(isolate);
ArrayConstructorStubBase::GenerateStubsAheadOfTime(isolate);
CreateAllocationSiteStub::GenerateAheadOfTime(isolate);
if (Serializer::enabled()) {
@@ -2984,7 +2977,6 @@
if (!save_doubles.FindCodeInCache(&save_doubles_code, isolate)) {
save_doubles_code = *(save_doubles.GetCode(isolate));
}
- save_doubles_code->set_is_pregenerated(true);
isolate->set_fp_stubs_generated(true);
}
}
@@ -2992,8 +2984,7 @@
void CEntryStub::GenerateAheadOfTime(Isolate* isolate) {
CEntryStub stub(1, kDontSaveFPRegs);
- Handle<Code> code = stub.GetCode(isolate);
- code->set_is_pregenerated(true);
+ stub.GetCode(isolate);
}
@@ -5287,90 +5278,13 @@
}
-struct AheadOfTimeWriteBarrierStubList {
- Register object, value, address;
- RememberedSetAction action;
-};
-
-
-#define REG(Name) { kRegister_ ## Name ## _Code }
-
-static const AheadOfTimeWriteBarrierStubList kAheadOfTime[] = {
- // Used in RegExpExecStub.
- { REG(ebx), REG(eax), REG(edi), EMIT_REMEMBERED_SET },
- // Used in CompileArrayPushCall.
- { REG(ebx), REG(ecx), REG(edx), EMIT_REMEMBERED_SET },
- { REG(ebx), REG(edi), REG(edx), OMIT_REMEMBERED_SET },
- // Used in StoreStubCompiler::CompileStoreField and
- // KeyedStoreStubCompiler::CompileStoreField via GenerateStoreField.
- { REG(edx), REG(ecx), REG(ebx), EMIT_REMEMBERED_SET },
- // GenerateStoreField calls the stub with two different permutations of
- // registers. This is the second.
- { REG(ebx), REG(ecx), REG(edx), EMIT_REMEMBERED_SET },
- // StoreIC::GenerateNormal via GenerateDictionaryStore
- { REG(ebx), REG(edi), REG(edx), EMIT_REMEMBERED_SET },
- // KeyedStoreIC::GenerateGeneric.
- { REG(ebx), REG(edx), REG(ecx), EMIT_REMEMBERED_SET},
- // KeyedStoreStubCompiler::GenerateStoreFastElement.
- { REG(edi), REG(ebx), REG(ecx), EMIT_REMEMBERED_SET},
- { REG(edx), REG(edi), REG(ebx), EMIT_REMEMBERED_SET},
- // ElementsTransitionGenerator::GenerateMapChangeElementTransition
- // and ElementsTransitionGenerator::GenerateSmiToDouble
- // and ElementsTransitionGenerator::GenerateDoubleToObject
- { REG(edx), REG(ebx), REG(edi), EMIT_REMEMBERED_SET},
- { REG(edx), REG(ebx), REG(edi), OMIT_REMEMBERED_SET},
- // ElementsTransitionGenerator::GenerateDoubleToObject
- { REG(eax), REG(edx), REG(esi), EMIT_REMEMBERED_SET},
- { REG(edx), REG(eax), REG(edi), EMIT_REMEMBERED_SET},
- // StoreArrayLiteralElementStub::Generate
- { REG(ebx), REG(eax), REG(ecx), EMIT_REMEMBERED_SET},
- // FastNewClosureStub and StringAddStub::Generate
- { REG(ecx), REG(edx), REG(ebx), EMIT_REMEMBERED_SET},
- // StringAddStub::Generate
- { REG(ecx), REG(eax), REG(ebx), EMIT_REMEMBERED_SET},
- // Null termination.
- { REG(no_reg), REG(no_reg), REG(no_reg), EMIT_REMEMBERED_SET}
-};
-
-#undef REG
-
-bool RecordWriteStub::IsPregenerated(Isolate* isolate) {
- for (const AheadOfTimeWriteBarrierStubList* entry = kAheadOfTime;
- !entry->object.is(no_reg);
- entry++) {
- if (object_.is(entry->object) &&
- value_.is(entry->value) &&
- address_.is(entry->address) &&
- remembered_set_action_ == entry->action &&
- save_fp_regs_mode_ == kDontSaveFPRegs) {
- return true;
- }
- }
- return false;
-}
-
-
void StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime(
Isolate* isolate) {
StoreBufferOverflowStub stub(kDontSaveFPRegs);
- stub.GetCode(isolate)->set_is_pregenerated(true);
+ stub.GetCode(isolate);
if (CpuFeatures::IsSafeForSnapshot(SSE2)) {
StoreBufferOverflowStub stub2(kSaveFPRegs);
- stub2.GetCode(isolate)->set_is_pregenerated(true);
- }
-}
-
-
-void RecordWriteStub::GenerateFixedRegStubsAheadOfTime(Isolate* isolate) {
- for (const AheadOfTimeWriteBarrierStubList* entry = kAheadOfTime;
- !entry->object.is(no_reg);
- entry++) {
- RecordWriteStub stub(entry->object,
- entry->value,
- entry->address,
- entry->action,
- kDontSaveFPRegs);
- stub.GetCode(isolate)->set_is_pregenerated(true);
+ stub2.GetCode(isolate);
}
}
@@ -5703,10 +5617,6 @@
void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) {
if (masm->isolate()->function_entry_hook() != NULL) {
- // It's always safe to call the entry hook stub, as the hook itself
- // is not allowed to call back to V8.
- AllowStubCallsScope allow_stub_calls(masm, true);
-
ProfileEntryHookStub stub;
masm->CallStub(&stub);
}
@@ -5865,12 +5775,12 @@
for (int i = 0; i <= to_index; ++i) {
ElementsKind kind = GetFastElementsKindFromSequenceIndex(i);
T stub(kind);
- stub.GetCode(isolate)->set_is_pregenerated(true);
+ stub.GetCode(isolate);
if (AllocationSite::GetMode(kind) != DONT_TRACK_ALLOCATION_SITE ||
(!FLAG_track_allocation_sites &&
(kind == initial_kind || kind == initial_holey_kind))) {
T stub1(kind, CONTEXT_CHECK_REQUIRED, DISABLE_ALLOCATION_SITES);
- stub1.GetCode(isolate)->set_is_pregenerated(true);
+ stub1.GetCode(isolate);
}
}
}
@@ -5892,11 +5802,11 @@
for (int i = 0; i < 2; i++) {
// For internal arrays we only need a few things
InternalArrayNoArgumentConstructorStub stubh1(kinds[i]);
- stubh1.GetCode(isolate)->set_is_pregenerated(true);
+ stubh1.GetCode(isolate);
InternalArraySingleArgumentConstructorStub stubh2(kinds[i]);
- stubh2.GetCode(isolate)->set_is_pregenerated(true);
+ stubh2.GetCode(isolate);
InternalArrayNArgumentsConstructorStub stubh3(kinds[i]);
- stubh3.GetCode(isolate)->set_is_pregenerated(true);
+ stubh3.GetCode(isolate);
}
}