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Unified Diff: src/code-stubs-hydrogen.cc

Issue 149063010: Remake of the load elimination fix made earlier (r18884). (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Rebasing on r19056. Created 6 years, 10 months ago
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Index: src/code-stubs-hydrogen.cc
diff --git a/src/code-stubs-hydrogen.cc b/src/code-stubs-hydrogen.cc
index df07f2e57101a373754abbb76c701593485efb08..638f9e5a1d044fa7b9060b750049be824669a2ed 100644
--- a/src/code-stubs-hydrogen.cc
+++ b/src/code-stubs-hydrogen.cc
@@ -448,11 +448,10 @@ HValue* CodeStubGraphBuilder<FastCloneShallowObjectStub>::BuildCodeStub() {
NOT_TENURED, JS_OBJECT_TYPE);
for (int i = 0; i < object_size; i += kPointerSize) {
- HObjectAccess access = HObjectAccess::ForJSObjectOffset(i);
+ HObjectAccess access = HObjectAccess::ForObservableJSObjectOffset(i);
Add<HStoreNamedField>(
object, access, Add<HLoadNamedField>(
- boilerplate, static_cast<HValue*>(NULL), access),
- INITIALIZING_STORE);
+ boilerplate, static_cast<HValue*>(NULL), access));
}
ASSERT(FLAG_allocation_site_pretenuring || (size == object_size));
@@ -489,29 +488,25 @@ HValue* CodeStubGraphBuilder<CreateAllocationSiteStub>::BuildCodeStub() {
Add<HStoreNamedField>(object,
HObjectAccess::ForAllocationSiteOffset(
AllocationSite::kTransitionInfoOffset),
- initial_elements_kind,
- INITIALIZING_STORE);
+ initial_elements_kind);
// Unlike literals, constructed arrays don't have nested sites
Add<HStoreNamedField>(object,
HObjectAccess::ForAllocationSiteOffset(
AllocationSite::kNestedSiteOffset),
- graph()->GetConstant0(),
- INITIALIZING_STORE);
+ graph()->GetConstant0());
// Pretenuring calculation field.
Add<HStoreNamedField>(object,
HObjectAccess::ForAllocationSiteOffset(
AllocationSite::kPretenureDataOffset),
- graph()->GetConstant0(),
- INITIALIZING_STORE);
+ graph()->GetConstant0());
// Pretenuring memento creation count field.
Add<HStoreNamedField>(object,
HObjectAccess::ForAllocationSiteOffset(
AllocationSite::kPretenureCreateCountOffset),
- graph()->GetConstant0(),
- INITIALIZING_STORE);
+ graph()->GetConstant0());
// Store an empty fixed array for the code dependency.
HConstant* empty_fixed_array =
@@ -520,8 +515,7 @@ HValue* CodeStubGraphBuilder<CreateAllocationSiteStub>::BuildCodeStub() {
object,
HObjectAccess::ForAllocationSiteOffset(
AllocationSite::kDependentCodeOffset),
- empty_fixed_array,
- INITIALIZING_STORE);
+ empty_fixed_array);
// Link the object to the allocation site list
HValue* site_list = Add<HConstant>(
@@ -531,10 +525,10 @@ HValue* CodeStubGraphBuilder<CreateAllocationSiteStub>::BuildCodeStub() {
HObjectAccess::ForAllocationSiteList());
store = Add<HStoreNamedField>(object,
HObjectAccess::ForAllocationSiteOffset(AllocationSite::kWeakNextOffset),
- site, INITIALIZING_STORE);
+ site);
store->SkipWriteBarrier();
Add<HStoreNamedField>(site_list, HObjectAccess::ForAllocationSiteList(),
- object, INITIALIZING_STORE);
+ object);
// We use a hammer (SkipWriteBarrier()) to indicate that we know the input
// cell is really a Cell, and so no write barrier is needed.
@@ -542,7 +536,7 @@ HValue* CodeStubGraphBuilder<CreateAllocationSiteStub>::BuildCodeStub() {
// a cell. (perhaps with a new instruction, HAssert).
HInstruction* cell = GetParameter(0);
HObjectAccess access = HObjectAccess::ForCellValue();
- store = Add<HStoreNamedField>(cell, access, object, INITIALIZING_STORE);
+ store = Add<HStoreNamedField>(cell, access, object);
store->SkipWriteBarrier();
return cell;
}
@@ -571,9 +565,10 @@ Handle<Code> KeyedLoadFastElementStub::GenerateCode(Isolate* isolate) {
template<>
HValue* CodeStubGraphBuilder<LoadFieldStub>::BuildCodeStub() {
Representation rep = casted_stub()->representation();
+ int offset = casted_stub()->offset();
HObjectAccess access = casted_stub()->is_inobject() ?
- HObjectAccess::ForJSObjectOffset(casted_stub()->offset(), rep) :
- HObjectAccess::ForBackingStoreOffset(casted_stub()->offset(), rep);
+ HObjectAccess::ForObservableJSObjectOffset(offset, rep) :
+ HObjectAccess::ForBackingStoreOffset(offset, rep);
return AddLoadNamedField(GetParameter(0), access);
}
@@ -586,9 +581,10 @@ Handle<Code> LoadFieldStub::GenerateCode(Isolate* isolate) {
template<>
HValue* CodeStubGraphBuilder<KeyedLoadFieldStub>::BuildCodeStub() {
Representation rep = casted_stub()->representation();
+ int offset = casted_stub()->offset();
HObjectAccess access = casted_stub()->is_inobject() ?
- HObjectAccess::ForJSObjectOffset(casted_stub()->offset(), rep) :
- HObjectAccess::ForBackingStoreOffset(casted_stub()->offset(), rep);
+ HObjectAccess::ForObservableJSObjectOffset(offset, rep) :
+ HObjectAccess::ForBackingStoreOffset(offset, rep);
return AddLoadNamedField(GetParameter(0), access);
}
@@ -731,7 +727,7 @@ HValue* CodeStubGraphBuilderBase::BuildArrayNArgumentsConstructor(
HInstruction* argument = Add<HAccessArgumentsAt>(
argument_elements, checked_length, key);
- Add<HStoreKeyed>(elements, key, argument, kind, INITIALIZING_STORE);
+ Add<HStoreKeyed>(elements, key, argument, kind);
builder.EndBody();
return new_object;
}
@@ -942,8 +938,7 @@ HValue* CodeStubGraphBuilder<BinaryOpICStub>::BuildCodeInitializedStub() {
IfBuilder if_heap_number(this);
if_heap_number.IfNot<HIsSmiAndBranch>(operand);
if_heap_number.Then();
- Add<HStoreNamedField>(operand, HObjectAccess::ForHeapNumberValue(), result,
- INITIALIZING_STORE);
+ Add<HStoreNamedField>(operand, HObjectAccess::ForHeapNumberValue(), result);
Push(operand);
if_heap_number.Else();
Push(result);
@@ -1067,7 +1062,7 @@ HValue* CodeStubGraphBuilder<StoreGlobalStub>::BuildCodeInitializedStub() {
builder.Then();
builder.Deopt("Unexpected cell contents in global store");
builder.Else();
- Add<HStoreNamedField>(cell, access, value, INITIALIZING_STORE);
+ Add<HStoreNamedField>(cell, access, value);
builder.End();
}
@@ -1132,12 +1127,12 @@ void CodeStubGraphBuilderBase::BuildInstallOptimizedCode(
HObjectAccess::ForContextSlot(Context::OPTIMIZED_FUNCTIONS_LIST));
Add<HStoreNamedField>(js_function,
HObjectAccess::ForNextFunctionLinkPointer(),
- optimized_functions_list, INITIALIZING_STORE);
+ optimized_functions_list);
// This store is the only one that should have a write barrier.
Add<HStoreNamedField>(native_context,
HObjectAccess::ForContextSlot(Context::OPTIMIZED_FUNCTIONS_LIST),
- js_function, INITIALIZING_STORE);
+ js_function);
}
@@ -1145,8 +1140,7 @@ void CodeStubGraphBuilderBase::BuildInstallCode(HValue* js_function,
HValue* shared_info) {
Add<HStoreNamedField>(js_function,
HObjectAccess::ForNextFunctionLinkPointer(),
- graph()->GetConstantUndefined(),
- INITIALIZING_STORE);
+ graph()->GetConstantUndefined());
HValue* code_object = Add<HLoadNamedField>(
shared_info, static_cast<HValue*>(NULL), HObjectAccess::ForCodeOffset());
Add<HStoreCodeEntry>(js_function, code_object);
@@ -1289,23 +1283,22 @@ HValue* CodeStubGraphBuilder<FastNewClosureStub>::BuildCodeStub() {
HInstruction* map_slot_value = Add<HLoadNamedField>(
native_context, static_cast<HValue*>(NULL),
HObjectAccess::ForContextSlot(map_index));
- Add<HStoreNamedField>(js_function, HObjectAccess::ForMap(), map_slot_value,
- INITIALIZING_STORE);
+ Add<HStoreNamedField>(js_function, HObjectAccess::ForMap(), map_slot_value);
// Initialize the rest of the function.
Add<HStoreNamedField>(js_function, HObjectAccess::ForPropertiesPointer(),
- empty_fixed_array, INITIALIZING_STORE);
+ empty_fixed_array);
Add<HStoreNamedField>(js_function, HObjectAccess::ForElementsPointer(),
- empty_fixed_array, INITIALIZING_STORE);
+ empty_fixed_array);
Add<HStoreNamedField>(js_function, HObjectAccess::ForLiteralsPointer(),
- empty_fixed_array, INITIALIZING_STORE);
+ empty_fixed_array);
Add<HStoreNamedField>(js_function, HObjectAccess::ForPrototypeOrInitialMap(),
- graph()->GetConstantHole(), INITIALIZING_STORE);
+ graph()->GetConstantHole());
Add<HStoreNamedField>(js_function,
HObjectAccess::ForSharedFunctionInfoPointer(),
- shared_info, INITIALIZING_STORE);
+ shared_info);
Add<HStoreNamedField>(js_function, HObjectAccess::ForFunctionContextPointer(),
- context(), INITIALIZING_STORE);
+ context());
// Initialize the code pointer in the function to be the one
// found in the shared function info object.
@@ -1342,18 +1335,18 @@ HValue* CodeStubGraphBuilder<FastNewContextStub>::BuildCodeStub() {
isolate()->factory()->function_context_map());
Add<HStoreNamedField>(function_context,
HObjectAccess::ForFixedArrayLength(),
- Add<HConstant>(length), INITIALIZING_STORE);
+ Add<HConstant>(length));
// Set up the fixed slots.
Add<HStoreNamedField>(function_context,
HObjectAccess::ForContextSlot(Context::CLOSURE_INDEX),
- function, INITIALIZING_STORE);
+ function);
Add<HStoreNamedField>(function_context,
HObjectAccess::ForContextSlot(Context::PREVIOUS_INDEX),
- context(), INITIALIZING_STORE);
+ context());
Add<HStoreNamedField>(function_context,
HObjectAccess::ForContextSlot(Context::EXTENSION_INDEX),
- graph()->GetConstant0(), INITIALIZING_STORE);
+ graph()->GetConstant0());
// Copy the global object from the previous context.
HValue* global_object = Add<HLoadNamedField>(
@@ -1362,15 +1355,13 @@ HValue* CodeStubGraphBuilder<FastNewContextStub>::BuildCodeStub() {
Add<HStoreNamedField>(function_context,
HObjectAccess::ForContextSlot(
Context::GLOBAL_OBJECT_INDEX),
- global_object,
- INITIALIZING_STORE);
+ global_object);
// Initialize the rest of the slots to undefined.
for (int i = Context::MIN_CONTEXT_SLOTS; i < length; ++i) {
Add<HStoreNamedField>(function_context,
HObjectAccess::ForContextSlot(i),
- graph()->GetConstantUndefined(),
- INITIALIZING_STORE);
+ graph()->GetConstantUndefined());
}
return function_context;
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