[maglev] Fast path instanceof
Copy the instanceof fast path from TurboFan, which emits an 'OrdinaryHasInstance' when there is no @@hasInstance symbol (which can eventually become a constant true/false if we can look through the prototype chain), and a direct call of @@hasInstance otherwise. In particular, the call to @@hasInstance requires a continuation builtin (to call ToBoolean), so add support for these too. Bug: v8:7700 Change-Id: I14aee4346e98cd650f190b811cc7a733e33addae Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3990844 Reviewed-by: Victor Gomes <victorgomes@chromium.org> Commit-Queue: Leszek Swirski <leszeks@chromium.org> Cr-Commit-Position: refs/heads/main@{#84012}
This commit is contained in:
Leszek Swirski
V8 LUCI CQ
parent
7caf58b5fd
commit
cecd01ac18
@ -479,13 +479,18 @@ class ExceptionHandlerTrampolineBuilder {
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// values are tagged and b) the stack walk treats unknown stack slots as
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// tagged.
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const InterpretedDeoptFrame& lazy_frame =
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deopt_info->top_frame().type() ==
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DeoptFrame::FrameType::kBuiltinContinuationFrame
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? deopt_info->top_frame().parent()->as_interpreted()
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: deopt_info->top_frame().as_interpreted();
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// TODO(v8:7700): Handle inlining.
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ParallelMoveResolver<Register> direct_moves(masm_);
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MoveVector materialising_moves;
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bool save_accumulator = false;
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RecordMoves(deopt_info->top_frame().as_interpreted().unit(), catch_block,
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deopt_info->top_frame().as_interpreted().frame_state(),
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RecordMoves(lazy_frame.unit(), catch_block, lazy_frame.frame_state(),
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&direct_moves, &materialising_moves, &save_accumulator);
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__ bind(&handler_info->trampoline_entry);
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@ -981,7 +986,29 @@ class SafepointingNodeProcessor {
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namespace {
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int GetFrameCount(const DeoptFrame& deopt_frame) {
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switch (deopt_frame.type()) {
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case DeoptFrame::FrameType::kInterpretedFrame:
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return 1 + deopt_frame.as_interpreted().unit().inlining_depth();
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case DeoptFrame::FrameType::kBuiltinContinuationFrame:
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return 1 + GetFrameCount(*deopt_frame.parent());
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}
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}
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BytecodeOffset GetBytecodeOffset(const DeoptFrame& deopt_frame) {
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switch (deopt_frame.type()) {
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case DeoptFrame::FrameType::kInterpretedFrame:
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return deopt_frame.as_interpreted().bytecode_position();
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case DeoptFrame::FrameType::kBuiltinContinuationFrame:
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return Builtins::GetContinuationBytecodeOffset(
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deopt_frame.as_builtin_continuation().builtin_id());
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}
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}
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SourcePosition GetSourcePosition(const DeoptFrame& deopt_frame) {
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switch (deopt_frame.type()) {
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case DeoptFrame::FrameType::kInterpretedFrame:
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return deopt_frame.as_interpreted().source_position();
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case DeoptFrame::FrameType::kBuiltinContinuationFrame:
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return SourcePosition::Unknown();
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}
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}
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} // namespace
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@ -1067,6 +1094,34 @@ class MaglevTranslationArrayBuilder {
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deopt_info->result_size());
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break;
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}
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case DeoptFrame::FrameType::kBuiltinContinuationFrame: {
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const BuiltinContinuationDeoptFrame& builtin_continuation_frame =
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top_frame.as_builtin_continuation();
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translation_array_builder_->BeginBuiltinContinuationFrame(
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Builtins::GetContinuationBytecodeOffset(
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builtin_continuation_frame.builtin_id()),
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GetDeoptLiteral(*builtin_continuation_frame.parent()
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->as_interpreted()
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.unit()
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.shared_function_info()
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.object()),
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builtin_continuation_frame.parameters().length());
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// Closure
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translation_array_builder_->StoreOptimizedOut();
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// Parameters
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for (ValueNode* value : builtin_continuation_frame.parameters()) {
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BuildDeoptFrameSingleValue(value, *current_input_location);
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current_input_location++;
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}
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// Context
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ValueNode* value = builtin_continuation_frame.context();
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BuildDeoptFrameSingleValue(value, *current_input_location);
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current_input_location++;
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}
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}
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}
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@ -1117,6 +1172,36 @@ class MaglevTranslationArrayBuilder {
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return_count);
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break;
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}
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case DeoptFrame::FrameType::kBuiltinContinuationFrame: {
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const BuiltinContinuationDeoptFrame& builtin_continuation_frame =
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frame.as_builtin_continuation();
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translation_array_builder_->BeginBuiltinContinuationFrame(
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Builtins::GetContinuationBytecodeOffset(
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builtin_continuation_frame.builtin_id()),
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GetDeoptLiteral(*builtin_continuation_frame.parent()
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->as_interpreted()
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.unit()
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.shared_function_info()
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.object()),
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builtin_continuation_frame.parameters().length());
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// Closure
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translation_array_builder_->StoreOptimizedOut();
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// Parameters
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for (ValueNode* value : builtin_continuation_frame.parameters()) {
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BuildDeoptFrameSingleValue(value, *current_input_location);
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current_input_location++;
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}
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// Context
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ValueNode* value = builtin_continuation_frame.context();
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BuildDeoptFrameSingleValue(value, *current_input_location);
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current_input_location++;
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break;
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}
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}
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}
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@ -1322,9 +1407,8 @@ void MaglevCodeGenerator::EmitDeopts() {
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translation_builder.BuildEagerDeopt(deopt_info);
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if (masm_.compilation_info()->collect_source_positions()) {
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__ RecordDeoptReason(
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deopt_info->reason(), 0,
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deopt_info->top_frame().as_interpreted().source_position(),
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__ RecordDeoptReason(deopt_info->reason(), 0,
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GetSourcePosition(deopt_info->top_frame()),
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deopt_index);
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}
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__ bind(deopt_info->deopt_entry_label());
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@ -1341,9 +1425,8 @@ void MaglevCodeGenerator::EmitDeopts() {
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translation_builder.BuildLazyDeopt(deopt_info);
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if (masm_.compilation_info()->collect_source_positions()) {
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__ RecordDeoptReason(
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DeoptimizeReason::kUnknown, 0,
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deopt_info->top_frame().as_interpreted().source_position(),
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__ RecordDeoptReason(DeoptimizeReason::kUnknown, 0,
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GetSourcePosition(deopt_info->top_frame()),
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deopt_index);
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}
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__ bind(deopt_info->deopt_entry_label());
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@ -1462,8 +1545,7 @@ Handle<DeoptimizationData> MaglevCodeGenerator::GenerateDeoptimizationData(
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int i = 0;
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for (EagerDeoptInfo* deopt_info : code_gen_state_.eager_deopts()) {
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DCHECK_NE(deopt_info->translation_index(), -1);
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raw_data.SetBytecodeOffset(
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i, deopt_info->top_frame().as_interpreted().bytecode_position());
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raw_data.SetBytecodeOffset(i, GetBytecodeOffset(deopt_info->top_frame()));
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raw_data.SetTranslationIndex(i,
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Smi::FromInt(deopt_info->translation_index()));
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raw_data.SetPc(i, Smi::FromInt(deopt_info->deopt_entry_label()->pos()));
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@ -1474,8 +1556,7 @@ Handle<DeoptimizationData> MaglevCodeGenerator::GenerateDeoptimizationData(
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}
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for (LazyDeoptInfo* deopt_info : code_gen_state_.lazy_deopts()) {
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DCHECK_NE(deopt_info->translation_index(), -1);
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raw_data.SetBytecodeOffset(
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i, deopt_info->top_frame().as_interpreted().bytecode_position());
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raw_data.SetBytecodeOffset(i, GetBytecodeOffset(deopt_info->top_frame()));
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raw_data.SetTranslationIndex(i,
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Smi::FromInt(deopt_info->translation_index()));
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raw_data.SetPc(i, Smi::FromInt(deopt_info->deopt_entry_label()->pos()));
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@ -180,9 +180,8 @@ class UseMarkingProcessor {
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LoopUsedNodes* loop_used_nodes,
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const ProcessingState& state) {
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int use_id = node->id();
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detail::DeepForEachInput(
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deopt_info,
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[&](ValueNode* node, interpreter::Register reg, InputLocation* input) {
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detail::DeepForEachInput(deopt_info,
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[&](ValueNode* node, InputLocation* input) {
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MarkUse(node, use_id, input, loop_used_nodes);
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});
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}
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@ -190,9 +189,8 @@ class UseMarkingProcessor {
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LoopUsedNodes* loop_used_nodes,
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const ProcessingState& state) {
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int use_id = node->id();
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detail::DeepForEachInput(
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deopt_info,
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[&](ValueNode* node, interpreter::Register reg, InputLocation* input) {
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detail::DeepForEachInput(deopt_info,
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[&](ValueNode* node, InputLocation* input) {
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MarkUse(node, use_id, input, loop_used_nodes);
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});
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}
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@ -3093,6 +3093,274 @@ void MaglevGraphBuilder::VisitTestGreaterThanOrEqual() {
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VisitCompareOperation<Operation::kGreaterThanOrEqual>();
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}
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MaglevGraphBuilder::InferHasInPrototypeChainResult
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MaglevGraphBuilder::InferHasInPrototypeChain(
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ValueNode* receiver, compiler::HeapObjectRef prototype) {
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auto stable_it = known_node_aspects().stable_maps.find(receiver);
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auto unstable_it = known_node_aspects().unstable_maps.find(receiver);
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auto stable_end = known_node_aspects().stable_maps.end();
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auto unstable_end = known_node_aspects().unstable_maps.end();
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// If either of the map sets is not found, then we don't know anything about
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// the map of the receiver, so bail.
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if (stable_it == stable_end || unstable_it == unstable_end) {
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return kMayBeInPrototypeChain;
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}
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ZoneVector<compiler::MapRef> receiver_map_refs(zone());
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// Try to determine either that all of the {receiver_maps} have the given
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// {prototype} in their chain, or that none do. If we can't tell, return
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// kMayBeInPrototypeChain.
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bool all = true;
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bool none = true;
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for (const ZoneHandleSet<Map>& map_set :
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{stable_it->second, unstable_it->second}) {
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for (Handle<Map> map_handle : map_set) {
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compiler::MapRef map = MakeRefAssumeMemoryFence(broker(), map_handle);
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receiver_map_refs.push_back(map);
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while (true) {
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if (IsSpecialReceiverInstanceType(map.instance_type())) {
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return kMayBeInPrototypeChain;
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}
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if (!map.IsJSObjectMap()) {
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all = false;
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break;
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}
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compiler::HeapObjectRef map_prototype = map.prototype();
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if (map_prototype.equals(prototype)) {
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none = false;
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break;
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}
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map = map_prototype.map();
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// TODO(v8:11457) Support dictionary mode protoypes here.
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if (!map.is_stable() || map.is_dictionary_map()) {
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return kMayBeInPrototypeChain;
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}
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if (map.oddball_type() == compiler::OddballType::kNull) {
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all = false;
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break;
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}
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}
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}
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}
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DCHECK_IMPLIES(all, !none);
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if (!all && !none) return kMayBeInPrototypeChain;
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{
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base::Optional<compiler::JSObjectRef> last_prototype;
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if (all) {
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// We don't need to protect the full chain if we found the prototype, we
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// can stop at {prototype}. In fact we could stop at the one before
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// {prototype} but since we're dealing with multiple receiver maps this
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// might be a different object each time, so it's much simpler to include
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// {prototype}. That does, however, mean that we must check {prototype}'s
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// map stability.
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if (!prototype.map().is_stable()) return kMayBeInPrototypeChain;
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last_prototype = prototype.AsJSObject();
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}
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broker()->dependencies()->DependOnStablePrototypeChains(
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receiver_map_refs, kStartAtPrototype, last_prototype);
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}
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DCHECK_EQ(all, !none);
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return all ? kIsInPrototypeChain : kIsNotInPrototypeChain;
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}
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bool MaglevGraphBuilder::TryBuildFastHasInPrototypeChain(
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ValueNode* object, compiler::ObjectRef prototype) {
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if (!prototype.IsHeapObject()) return false;
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auto in_prototype_chain =
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InferHasInPrototypeChain(object, prototype.AsHeapObject());
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if (in_prototype_chain == kMayBeInPrototypeChain) return false;
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SetAccumulator(GetBooleanConstant(in_prototype_chain == kIsInPrototypeChain));
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return true;
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}
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void MaglevGraphBuilder::BuildHasInPrototypeChain(
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ValueNode* object, compiler::ObjectRef prototype) {
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if (TryBuildFastHasInPrototypeChain(object, prototype)) return;
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SetAccumulator(BuildCallRuntime(Runtime::kHasInPrototypeChain,
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{object, GetConstant(prototype)}));
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}
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bool MaglevGraphBuilder::TryBuildFastOrdinaryHasInstance(
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ValueNode* object, compiler::JSObjectRef callable,
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ValueNode* callable_node_if_not_constant) {
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const bool is_constant = callable_node_if_not_constant == nullptr;
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if (!is_constant) return false;
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if (callable.IsJSBoundFunction()) {
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// OrdinaryHasInstance on bound functions turns into a recursive
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// invocation of the instanceof operator again.
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compiler::JSBoundFunctionRef function = callable.AsJSBoundFunction();
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compiler::JSReceiverRef bound_target_function =
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function.bound_target_function();
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if (!bound_target_function.IsJSObject() ||
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!TryBuildFastInstanceOf(object, bound_target_function.AsJSObject(),
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nullptr)) {
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// If we can't build a fast instance-of, build a slow one with the
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// partial optimisation of using the bound target function constant.
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SetAccumulator(BuildCallBuiltin<Builtin::kInstanceOf>(
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{object, GetConstant(bound_target_function)}));
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}
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return true;
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}
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if (callable.IsJSFunction()) {
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// Optimize if we currently know the "prototype" property.
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compiler::JSFunctionRef function = callable.AsJSFunction();
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// TODO(v8:7700): Remove the has_prototype_slot condition once the broker
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// is always enabled.
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if (!function.map().has_prototype_slot() ||
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!function.has_instance_prototype(broker()->dependencies()) ||
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function.PrototypeRequiresRuntimeLookup(broker()->dependencies())) {
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return false;
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}
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compiler::ObjectRef prototype =
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broker()->dependencies()->DependOnPrototypeProperty(function);
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BuildHasInPrototypeChain(object, prototype);
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return true;
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}
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return false;
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}
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void MaglevGraphBuilder::BuildOrdinaryHasInstance(
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ValueNode* object, compiler::JSObjectRef callable,
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ValueNode* callable_node_if_not_constant) {
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if (TryBuildFastOrdinaryHasInstance(object, callable,
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callable_node_if_not_constant))
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return;
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SetAccumulator(BuildCallBuiltin<Builtin::kOrdinaryHasInstance>(
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{object, callable_node_if_not_constant ? callable_node_if_not_constant
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: GetConstant(callable)}));
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}
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bool MaglevGraphBuilder::TryBuildFastInstanceOf(
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ValueNode* object, compiler::JSObjectRef callable,
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ValueNode* callable_node_if_not_constant) {
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compiler::MapRef receiver_map = callable.map();
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compiler::NameRef name =
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MakeRef(broker(), local_isolate()->factory()->has_instance_symbol());
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compiler::PropertyAccessInfo access_info = broker()->GetPropertyAccessInfo(
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receiver_map, name, compiler::AccessMode::kLoad,
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broker()->dependencies());
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// TODO(v8:11457) Support dictionary mode holders here.
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if (access_info.IsInvalid() || access_info.HasDictionaryHolder()) {
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return false;
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}
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access_info.RecordDependencies(broker()->dependencies());
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if (access_info.IsNotFound()) {
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// If there's no @@hasInstance handler, the OrdinaryHasInstance operation
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// takes over, but that requires the constructor to be callable.
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if (!receiver_map.is_callable()) {
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return false;
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}
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broker()->dependencies()->DependOnStablePrototypeChains(
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access_info.lookup_start_object_maps(), kStartAtPrototype);
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// Monomorphic property access.
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if (callable_node_if_not_constant) {
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BuildCheckMaps(callable_node_if_not_constant,
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access_info.lookup_start_object_maps());
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}
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BuildOrdinaryHasInstance(object, callable, callable_node_if_not_constant);
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return true;
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}
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if (access_info.IsFastDataConstant()) {
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base::Optional<compiler::JSObjectRef> holder = access_info.holder();
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bool found_on_proto = holder.has_value();
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compiler::JSObjectRef holder_ref =
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found_on_proto ? holder.value() : callable;
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base::Optional<compiler::ObjectRef> has_instance_field =
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holder_ref.GetOwnFastDataProperty(access_info.field_representation(),
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access_info.field_index(),
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broker()->dependencies());
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if (!has_instance_field.has_value() ||
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!has_instance_field->IsHeapObject() ||
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!has_instance_field->AsHeapObject().map().is_callable()) {
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return false;
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}
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if (found_on_proto) {
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broker()->dependencies()->DependOnStablePrototypeChains(
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access_info.lookup_start_object_maps(), kStartAtPrototype,
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holder.value());
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}
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ValueNode* callable_node;
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if (callable_node_if_not_constant) {
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// Check that {callable_node_if_not_constant} is actually {callable}.
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AddNewNode<CheckValue>({callable_node_if_not_constant}, callable);
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callable_node = callable_node_if_not_constant;
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} else {
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callable_node = GetConstant(callable);
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}
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// Call @@hasInstance
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Call* call = AddNewNode<Call>(
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Call::kFixedInputCount + 2, ConvertReceiverMode::kNotNullOrUndefined,
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Call::TargetType::kJSFunction, compiler::FeedbackSource(),
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GetConstant(*has_instance_field), GetContext());
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call->set_arg(0, callable_node);
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call->set_arg(1, object);
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// Make sure that a lazy deopt after the @@hasInstance call also performs
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// ToBoolean before returning to the interpreter.
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// TODO(leszeks): Wrap this in a helper.
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new (call->lazy_deopt_info()) LazyDeoptInfo(
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zone(),
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BuiltinContinuationDeoptFrame(
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Builtin::kToBooleanLazyDeoptContinuation, {}, GetContext(),
|
||||
zone()->New<InterpretedDeoptFrame>(
|
||||
call->lazy_deopt_info()->top_frame().as_interpreted())));
|
||||
|
||||
SetAccumulator(AddNewNode<ToBoolean>({call}));
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
bool MaglevGraphBuilder::TryBuildFastInstanceOfWithFeedback(
|
||||
ValueNode* object, ValueNode* callable,
|
||||
compiler::FeedbackSource feedback_source) {
|
||||
compiler::ProcessedFeedback const& feedback =
|
||||
broker()->GetFeedbackForInstanceOf(feedback_source);
|
||||
|
||||
// TurboFan emits generic code when there's no feedback, rather than
|
||||
// deopting.
|
||||
if (feedback.IsInsufficient()) return false;
|
||||
|
||||
// Check if the right hand side is a known receiver, or
|
||||
// we have feedback from the InstanceOfIC.
|
||||
if (callable->Is<Constant>() &&
|
||||
callable->Cast<Constant>()->object().IsJSObject()) {
|
||||
compiler::JSObjectRef callable_ref =
|
||||
callable->Cast<Constant>()->object().AsJSObject();
|
||||
return TryBuildFastInstanceOf(object, callable_ref, nullptr);
|
||||
}
|
||||
if (feedback_source.IsValid()) {
|
||||
base::Optional<compiler::JSObjectRef> callable_from_feedback =
|
||||
feedback.AsInstanceOf().value();
|
||||
if (callable_from_feedback) {
|
||||
return TryBuildFastInstanceOf(object, *callable_from_feedback, callable);
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
void MaglevGraphBuilder::VisitTestInstanceOf() {
|
||||
// TestInstanceOf <src> <feedback_slot>
|
||||
ValueNode* object = LoadRegisterTagged(0);
|
||||
@ -3100,8 +3368,10 @@ void MaglevGraphBuilder::VisitTestInstanceOf() {
|
||||
FeedbackSlot slot = GetSlotOperand(1);
|
||||
compiler::FeedbackSource feedback_source{feedback(), slot};
|
||||
|
||||
// TODO(victorgomes): Check feedback slot and a do static lookup for
|
||||
// @@hasInstance.
|
||||
if (TryBuildFastInstanceOfWithFeedback(object, callable, feedback_source)) {
|
||||
return;
|
||||
}
|
||||
|
||||
ValueNode* context = GetContext();
|
||||
SetAccumulator(
|
||||
AddNewNode<TestInstanceOf>({context, object, callable}, feedback_source));
|
||||
|
||||
@ -1058,6 +1058,30 @@ class MaglevGraphBuilder {
|
||||
bool TryReuseKnownPropertyLoad(ValueNode* lookup_start_object,
|
||||
compiler::NameRef name);
|
||||
|
||||
enum InferHasInPrototypeChainResult {
|
||||
kMayBeInPrototypeChain,
|
||||
kIsInPrototypeChain,
|
||||
kIsNotInPrototypeChain
|
||||
};
|
||||
InferHasInPrototypeChainResult InferHasInPrototypeChain(
|
||||
ValueNode* receiver, compiler::HeapObjectRef prototype);
|
||||
bool TryBuildFastHasInPrototypeChain(ValueNode* object,
|
||||
compiler::ObjectRef prototype);
|
||||
void BuildHasInPrototypeChain(ValueNode* object,
|
||||
compiler::ObjectRef prototype);
|
||||
bool TryBuildFastOrdinaryHasInstance(ValueNode* object,
|
||||
compiler::JSObjectRef callable,
|
||||
ValueNode* callable_node);
|
||||
void BuildOrdinaryHasInstance(ValueNode* object,
|
||||
compiler::JSObjectRef callable,
|
||||
ValueNode* callable_node);
|
||||
bool TryBuildFastInstanceOf(ValueNode* object,
|
||||
compiler::JSObjectRef callable_ref,
|
||||
ValueNode* callable_node);
|
||||
bool TryBuildFastInstanceOfWithFeedback(
|
||||
ValueNode* object, ValueNode* callable,
|
||||
compiler::FeedbackSource feedback_source);
|
||||
|
||||
template <Operation kOperation>
|
||||
void BuildGenericUnaryOperationNode();
|
||||
template <Operation kOperation>
|
||||
|
||||
@ -365,6 +365,57 @@ void MaglevPrintingVisitor::PreProcessBasicBlock(BasicBlock* block) {
|
||||
|
||||
namespace {
|
||||
|
||||
void PrintSingleDeoptFrame(
|
||||
std::ostream& os, MaglevGraphLabeller* graph_labeller,
|
||||
const DeoptFrame& frame, InputLocation*& current_input_location,
|
||||
LazyDeoptInfo* lazy_deopt_info_if_top_frame = nullptr) {
|
||||
switch (frame.type()) {
|
||||
case DeoptFrame::FrameType::kInterpretedFrame: {
|
||||
os << "@" << frame.as_interpreted().bytecode_position() << " : {";
|
||||
bool first = true;
|
||||
frame.as_interpreted().frame_state()->ForEachValue(
|
||||
frame.as_interpreted().unit(),
|
||||
[&](ValueNode* node, interpreter::Register reg) {
|
||||
if (first) {
|
||||
first = false;
|
||||
} else {
|
||||
os << ", ";
|
||||
}
|
||||
os << reg.ToString() << ":";
|
||||
if (lazy_deopt_info_if_top_frame &&
|
||||
lazy_deopt_info_if_top_frame->IsResultRegister(reg)) {
|
||||
os << "<result>";
|
||||
} else {
|
||||
os << PrintNodeLabel(graph_labeller, node) << ":"
|
||||
<< current_input_location->operand();
|
||||
current_input_location++;
|
||||
}
|
||||
});
|
||||
os << "}";
|
||||
break;
|
||||
}
|
||||
case DeoptFrame::FrameType::kBuiltinContinuationFrame: {
|
||||
os << "@" << Builtins::name(frame.as_builtin_continuation().builtin_id())
|
||||
<< " : {";
|
||||
int arg_index = 0;
|
||||
for (ValueNode* node : frame.as_builtin_continuation().parameters()) {
|
||||
os << "a" << arg_index << ":" << PrintNodeLabel(graph_labeller, node)
|
||||
<< ":" << current_input_location->operand();
|
||||
arg_index++;
|
||||
current_input_location++;
|
||||
os << ", ";
|
||||
}
|
||||
os << "<context>:"
|
||||
<< PrintNodeLabel(graph_labeller,
|
||||
frame.as_builtin_continuation().context())
|
||||
<< ":" << current_input_location->operand();
|
||||
current_input_location++;
|
||||
os << "}";
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void RecursivePrintEagerDeopt(std::ostream& os,
|
||||
std::vector<BasicBlock*> targets,
|
||||
const DeoptFrame& frame,
|
||||
@ -379,26 +430,12 @@ void RecursivePrintEagerDeopt(std::ostream& os,
|
||||
PrintVerticalArrows(os, targets);
|
||||
PrintPadding(os, graph_labeller, max_node_id, 0);
|
||||
if (!frame.parent()) {
|
||||
os << " ↱ eager @" << frame.as_interpreted().bytecode_position() << " : {";
|
||||
os << " ↱ eager ";
|
||||
} else {
|
||||
os << " │ @" << frame.as_interpreted().bytecode_position().ToInt()
|
||||
<< " : {";
|
||||
os << " │ ";
|
||||
}
|
||||
|
||||
bool first = true;
|
||||
frame.as_interpreted().frame_state()->ForEachValue(
|
||||
frame.as_interpreted().unit(),
|
||||
[&](ValueNode* node, interpreter::Register reg) {
|
||||
if (first) {
|
||||
first = false;
|
||||
} else {
|
||||
os << ", ";
|
||||
}
|
||||
os << reg.ToString() << ":" << PrintNodeLabel(graph_labeller, node)
|
||||
<< ":" << current_input_location->operand();
|
||||
current_input_location++;
|
||||
});
|
||||
os << "}\n";
|
||||
PrintSingleDeoptFrame(os, graph_labeller, frame, current_input_location);
|
||||
os << "\n";
|
||||
}
|
||||
|
||||
void PrintEagerDeopt(std::ostream& os, std::vector<BasicBlock*> targets,
|
||||
@ -430,23 +467,9 @@ void RecursivePrintLazyDeopt(std::ostream& os, std::vector<BasicBlock*> targets,
|
||||
|
||||
PrintVerticalArrows(os, targets);
|
||||
PrintPadding(os, graph_labeller, max_node_id, 0);
|
||||
os << " │ @" << frame.as_interpreted().bytecode_position().ToInt()
|
||||
<< " : {";
|
||||
|
||||
bool first = true;
|
||||
frame.as_interpreted().frame_state()->ForEachValue(
|
||||
frame.as_interpreted().unit(),
|
||||
[&](ValueNode* node, interpreter::Register reg) {
|
||||
if (first) {
|
||||
first = false;
|
||||
} else {
|
||||
os << ", ";
|
||||
}
|
||||
os << reg.ToString() << ":" << PrintNodeLabel(graph_labeller, node)
|
||||
<< ":" << current_input_location->operand();
|
||||
current_input_location++;
|
||||
});
|
||||
os << "}\n";
|
||||
os << " │ ";
|
||||
PrintSingleDeoptFrame(os, graph_labeller, frame, current_input_location);
|
||||
os << "\n";
|
||||
}
|
||||
|
||||
template <typename NodeT>
|
||||
@ -464,27 +487,10 @@ void PrintLazyDeopt(std::ostream& os, std::vector<BasicBlock*> targets,
|
||||
PrintVerticalArrows(os, targets);
|
||||
PrintPadding(os, graph_labeller, max_node_id, 0);
|
||||
|
||||
os << " ↳ lazy @" << top_frame.as_interpreted().bytecode_position()
|
||||
<< " : {";
|
||||
bool first = true;
|
||||
top_frame.as_interpreted().frame_state()->ForEachValue(
|
||||
top_frame.as_interpreted().unit(),
|
||||
[&](ValueNode* node, interpreter::Register reg) {
|
||||
if (first) {
|
||||
first = false;
|
||||
} else {
|
||||
os << ", ";
|
||||
}
|
||||
os << reg.ToString() << ":";
|
||||
if (deopt_info->IsResultRegister(reg)) {
|
||||
os << "<result>";
|
||||
} else {
|
||||
os << PrintNodeLabel(graph_labeller, node) << ":"
|
||||
<< current_input_location->operand();
|
||||
current_input_location++;
|
||||
}
|
||||
});
|
||||
os << "}\n";
|
||||
os << " ↳ lazy ";
|
||||
PrintSingleDeoptFrame(os, graph_labeller, top_frame, current_input_location,
|
||||
deopt_info);
|
||||
os << "\n";
|
||||
}
|
||||
|
||||
template <typename NodeT>
|
||||
@ -509,15 +515,20 @@ void PrintExceptionHandlerPoint(std::ostream& os,
|
||||
// The exception handler liveness should be a subset of lazy_deopt_info one.
|
||||
auto* liveness = block->state()->frame_state().liveness();
|
||||
LazyDeoptInfo* deopt_info = node->lazy_deopt_info();
|
||||
const DeoptFrame& top_frame = deopt_info->top_frame();
|
||||
|
||||
const InterpretedDeoptFrame& lazy_frame =
|
||||
deopt_info->top_frame().type() ==
|
||||
DeoptFrame::FrameType::kBuiltinContinuationFrame
|
||||
? deopt_info->top_frame().parent()->as_interpreted()
|
||||
: deopt_info->top_frame().as_interpreted();
|
||||
|
||||
PrintVerticalArrows(os, targets);
|
||||
PrintPadding(os, graph_labeller, max_node_id, 0);
|
||||
|
||||
os << " ↳ throw @" << handler_offset << " : {";
|
||||
bool first = true;
|
||||
top_frame.as_interpreted().frame_state()->ForEachValue(
|
||||
top_frame.as_interpreted().unit(),
|
||||
lazy_frame.as_interpreted().frame_state()->ForEachValue(
|
||||
lazy_frame.as_interpreted().unit(),
|
||||
[&](ValueNode* node, interpreter::Register reg) {
|
||||
if (!reg.is_parameter() && !liveness->RegisterIsLive(reg.index())) {
|
||||
// Skip, since not live at the handler offset.
|
||||
|
||||
@ -28,21 +28,6 @@ std::ostream& operator<<(std::ostream& os, const ValueRepresentation& repr) {
|
||||
return os;
|
||||
}
|
||||
|
||||
namespace {
|
||||
ValueRepresentation ToValueRepresentation(MachineType type) {
|
||||
switch (type.representation()) {
|
||||
case MachineRepresentation::kTagged:
|
||||
case MachineRepresentation::kTaggedSigned:
|
||||
case MachineRepresentation::kTaggedPointer:
|
||||
return ValueRepresentation::kTagged;
|
||||
case MachineRepresentation::kFloat64:
|
||||
return ValueRepresentation::kFloat64;
|
||||
default:
|
||||
return ValueRepresentation::kInt32;
|
||||
}
|
||||
}
|
||||
} // namespace
|
||||
|
||||
class Graph;
|
||||
|
||||
// TODO(victorgomes): Currently it only verifies the inputs for all ValueNodes
|
||||
@ -59,6 +44,19 @@ class MaglevGraphVerifier {
|
||||
void PostProcessGraph(Graph* graph) {}
|
||||
void PreProcessBasicBlock(BasicBlock* block) {}
|
||||
|
||||
static ValueRepresentation ToValueRepresentation(MachineType type) {
|
||||
switch (type.representation()) {
|
||||
case MachineRepresentation::kTagged:
|
||||
case MachineRepresentation::kTaggedSigned:
|
||||
case MachineRepresentation::kTaggedPointer:
|
||||
return ValueRepresentation::kTagged;
|
||||
case MachineRepresentation::kFloat64:
|
||||
return ValueRepresentation::kFloat64;
|
||||
default:
|
||||
return ValueRepresentation::kInt32;
|
||||
}
|
||||
}
|
||||
|
||||
void CheckValueInputIs(NodeBase* node, int i, ValueRepresentation expected) {
|
||||
ValueNode* input = node->input(i).node();
|
||||
ValueRepresentation got = input->properties().value_representation();
|
||||
@ -142,6 +140,7 @@ class MaglevGraphVerifier {
|
||||
case Opcode::kSetPendingMessage:
|
||||
case Opcode::kStoreMap:
|
||||
case Opcode::kStringLength:
|
||||
case Opcode::kToBoolean:
|
||||
case Opcode::kToBooleanLogicalNot:
|
||||
case Opcode::kTestUndetectable:
|
||||
case Opcode::kTestTypeOf:
|
||||
|
||||
@ -26,9 +26,15 @@ void DeepForEachInputImpl(const DeoptFrame& frame,
|
||||
frame.as_interpreted().frame_state()->ForEachValue(
|
||||
frame.as_interpreted().unit(),
|
||||
[&](ValueNode* node, interpreter::Register reg) {
|
||||
f(node, reg, &input_locations[index++]);
|
||||
f(node, &input_locations[index++]);
|
||||
});
|
||||
break;
|
||||
case DeoptFrame::FrameType::kBuiltinContinuationFrame:
|
||||
for (ValueNode* node : frame.as_builtin_continuation().parameters()) {
|
||||
f(node, &input_locations[index++]);
|
||||
}
|
||||
f(frame.as_builtin_continuation().context(), &input_locations[index++]);
|
||||
UNREACHABLE();
|
||||
}
|
||||
}
|
||||
|
||||
@ -42,10 +48,10 @@ void DeepForEachInput(const EagerDeoptInfo* deopt_info, Function&& f) {
|
||||
template <typename Function>
|
||||
void DeepForEachInput(const LazyDeoptInfo* deopt_info, Function&& f) {
|
||||
int index = 0;
|
||||
InputLocation* input_locations = deopt_info->input_locations();
|
||||
const DeoptFrame& top_frame = deopt_info->top_frame();
|
||||
if (top_frame.parent()) {
|
||||
DeepForEachInputImpl(*top_frame.parent(), deopt_info->input_locations(),
|
||||
index, f);
|
||||
DeepForEachInputImpl(*top_frame.parent(), input_locations, index, f);
|
||||
}
|
||||
// Handle the top-of-frame info separately, since we have to skip the result
|
||||
// location.
|
||||
@ -57,9 +63,15 @@ void DeepForEachInput(const LazyDeoptInfo* deopt_info, Function&& f) {
|
||||
// Skip over the result location since it is irrelevant for lazy
|
||||
// deopts (unoptimized code will recreate the result).
|
||||
if (deopt_info->IsResultRegister(reg)) return;
|
||||
f(node, reg, &deopt_info->input_locations()[index++]);
|
||||
f(node, &input_locations[index++]);
|
||||
});
|
||||
break;
|
||||
case DeoptFrame::FrameType::kBuiltinContinuationFrame:
|
||||
for (ValueNode* node : top_frame.as_builtin_continuation().parameters()) {
|
||||
f(node, &input_locations[index++]);
|
||||
};
|
||||
f(top_frame.as_builtin_continuation().context(),
|
||||
&input_locations[index++]);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -145,8 +145,7 @@ class SaveRegisterStateForCall {
|
||||
RegList GetGeneralRegistersUsedAsInputs(const EagerDeoptInfo* deopt_info) {
|
||||
RegList regs;
|
||||
detail::DeepForEachInput(deopt_info,
|
||||
[®s](ValueNode* value, interpreter::Register reg,
|
||||
InputLocation* input) {
|
||||
[®s](ValueNode* value, InputLocation* input) {
|
||||
if (input->IsGeneralRegister()) {
|
||||
regs.set(input->AssignedGeneralRegister());
|
||||
}
|
||||
@ -221,7 +220,7 @@ void AllocateRaw(MaglevAssembler* masm, RegisterSnapshot& register_snapshot,
|
||||
__ bind(*done);
|
||||
}
|
||||
|
||||
void ToBoolean(MaglevAssembler* masm, Register value, ZoneLabelRef is_true,
|
||||
void EmitToBoolean(MaglevAssembler* masm, Register value, ZoneLabelRef is_true,
|
||||
ZoneLabelRef is_false, bool fallthrough_when_true) {
|
||||
Register map = kScratchRegister;
|
||||
|
||||
@ -378,9 +377,16 @@ size_t GetInputLocationsArraySize(const DeoptFrame& top_frame) {
|
||||
size_t size = 0;
|
||||
const DeoptFrame* frame = &top_frame;
|
||||
do {
|
||||
const InterpretedDeoptFrame& interpreted_frame = frame->as_interpreted();
|
||||
size += interpreted_frame.frame_state()->size(interpreted_frame.unit());
|
||||
frame = interpreted_frame.parent();
|
||||
switch (frame->type()) {
|
||||
case DeoptFrame::FrameType::kInterpretedFrame:
|
||||
size += frame->as_interpreted().frame_state()->size(
|
||||
frame->as_interpreted().unit());
|
||||
break;
|
||||
case DeoptFrame::FrameType::kBuiltinContinuationFrame:
|
||||
size += frame->as_builtin_continuation().parameters().size() + 1;
|
||||
break;
|
||||
}
|
||||
frame = frame->parent();
|
||||
} while (frame != nullptr);
|
||||
return size;
|
||||
}
|
||||
@ -3205,6 +3211,28 @@ void SetPendingMessage::GenerateCode(MaglevAssembler* masm,
|
||||
}
|
||||
}
|
||||
|
||||
void ToBoolean::AllocateVreg(MaglevVregAllocationState* vreg_state) {
|
||||
UseRegister(value());
|
||||
DefineAsRegister(vreg_state, this);
|
||||
}
|
||||
void ToBoolean::GenerateCode(MaglevAssembler* masm,
|
||||
const ProcessingState& state) {
|
||||
Register object = ToRegister(value());
|
||||
Register return_value = ToRegister(result());
|
||||
Label done;
|
||||
Zone* zone = masm->compilation_info()->zone();
|
||||
ZoneLabelRef object_is_true(zone), object_is_false(zone);
|
||||
// TODO(leszeks): We're likely to be calling this on an existing boolean --
|
||||
// maybe that's a case we should fast-path here and re-use that boolean value?
|
||||
EmitToBoolean(masm, object, object_is_true, object_is_false, true);
|
||||
__ bind(*object_is_true);
|
||||
__ LoadRoot(return_value, RootIndex::kTrueValue);
|
||||
__ jmp(&done, Label::kNear);
|
||||
__ bind(*object_is_false);
|
||||
__ LoadRoot(return_value, RootIndex::kFalseValue);
|
||||
__ bind(&done);
|
||||
}
|
||||
|
||||
void ToBooleanLogicalNot::AllocateVreg(MaglevVregAllocationState* vreg_state) {
|
||||
UseRegister(value());
|
||||
DefineAsRegister(vreg_state, this);
|
||||
@ -3216,7 +3244,7 @@ void ToBooleanLogicalNot::GenerateCode(MaglevAssembler* masm,
|
||||
Label done;
|
||||
Zone* zone = masm->compilation_info()->zone();
|
||||
ZoneLabelRef object_is_true(zone), object_is_false(zone);
|
||||
ToBoolean(masm, object, object_is_true, object_is_false, true);
|
||||
EmitToBoolean(masm, object, object_is_true, object_is_false, true);
|
||||
__ bind(*object_is_true);
|
||||
__ LoadRoot(return_value, RootIndex::kFalseValue);
|
||||
__ jmp(&done, Label::kNear);
|
||||
@ -4259,9 +4287,7 @@ void AttemptOnStackReplacement(MaglevAssembler* masm,
|
||||
// configurable.
|
||||
RegisterSnapshot snapshot = node->register_snapshot();
|
||||
detail::DeepForEachInput(
|
||||
node->eager_deopt_info(),
|
||||
[&](ValueNode* node, interpreter::Register reg,
|
||||
InputLocation* input) {
|
||||
node->eager_deopt_info(), [&](ValueNode* node, InputLocation* input) {
|
||||
if (!input->IsAnyRegister()) return;
|
||||
if (input->IsDoubleRegister()) {
|
||||
snapshot.live_double_registers.set(
|
||||
@ -4445,7 +4471,7 @@ void BranchIfToBooleanTrue::GenerateCode(MaglevAssembler* masm,
|
||||
ZoneLabelRef false_label =
|
||||
ZoneLabelRef::UnsafeFromLabelPointer(if_false()->label());
|
||||
bool fallthrough_when_true = (if_true() == state.next_block());
|
||||
ToBoolean(masm, ToRegister(condition_input()), true_label, false_label,
|
||||
EmitToBoolean(masm, ToRegister(condition_input()), true_label, false_label,
|
||||
fallthrough_when_true);
|
||||
}
|
||||
|
||||
|
||||
@ -179,6 +179,7 @@ class CompactInterpreterFrameState;
|
||||
V(SetPendingMessage) \
|
||||
V(StringAt) \
|
||||
V(StringLength) \
|
||||
V(ToBoolean) \
|
||||
V(ToBooleanLogicalNot) \
|
||||
V(TaggedEqual) \
|
||||
V(TaggedNotEqual) \
|
||||
@ -665,17 +666,19 @@ class Input : public InputLocation {
|
||||
};
|
||||
|
||||
class InterpretedDeoptFrame;
|
||||
class BuiltinContinuationDeoptFrame;
|
||||
class DeoptFrame {
|
||||
public:
|
||||
enum class FrameType {
|
||||
kInterpretedFrame,
|
||||
// kBuiltinContinuationFrame,
|
||||
kBuiltinContinuationFrame,
|
||||
};
|
||||
|
||||
FrameType type() const { return type_; }
|
||||
const DeoptFrame* parent() const { return parent_; }
|
||||
|
||||
inline const InterpretedDeoptFrame& as_interpreted() const;
|
||||
inline const BuiltinContinuationDeoptFrame& as_builtin_continuation() const;
|
||||
|
||||
protected:
|
||||
struct InterpretedFrameData {
|
||||
@ -684,14 +687,24 @@ class DeoptFrame {
|
||||
BytecodeOffset bytecode_position;
|
||||
SourcePosition source_position;
|
||||
};
|
||||
struct BuiltinContinuationFrameData {
|
||||
Builtin builtin_id;
|
||||
base::Vector<ValueNode*> parameters;
|
||||
ValueNode* context;
|
||||
};
|
||||
|
||||
DeoptFrame(InterpretedFrameData data, const DeoptFrame* parent)
|
||||
: interpreted_frame_data_(data),
|
||||
type_(FrameType::kInterpretedFrame),
|
||||
parent_(parent) {}
|
||||
DeoptFrame(BuiltinContinuationFrameData data, const DeoptFrame* parent)
|
||||
: builtin_continuation_frame_data_(data),
|
||||
type_(FrameType::kBuiltinContinuationFrame),
|
||||
parent_(parent) {}
|
||||
|
||||
union {
|
||||
const InterpretedFrameData interpreted_frame_data_;
|
||||
const BuiltinContinuationFrameData builtin_continuation_frame_data_;
|
||||
};
|
||||
FrameType type_;
|
||||
const DeoptFrame* parent_;
|
||||
@ -730,6 +743,35 @@ inline const InterpretedDeoptFrame& DeoptFrame::as_interpreted() const {
|
||||
return static_cast<const InterpretedDeoptFrame&>(*this);
|
||||
}
|
||||
|
||||
class BuiltinContinuationDeoptFrame : public DeoptFrame {
|
||||
public:
|
||||
BuiltinContinuationDeoptFrame(Builtin builtin_id,
|
||||
base::Vector<ValueNode*> parameters,
|
||||
ValueNode* context, const DeoptFrame* parent)
|
||||
: DeoptFrame(
|
||||
BuiltinContinuationFrameData{builtin_id, parameters, context},
|
||||
parent) {}
|
||||
|
||||
const Builtin& builtin_id() const {
|
||||
return builtin_continuation_frame_data_.builtin_id;
|
||||
}
|
||||
base::Vector<ValueNode*> parameters() const {
|
||||
return builtin_continuation_frame_data_.parameters;
|
||||
}
|
||||
ValueNode* context() const {
|
||||
return builtin_continuation_frame_data_.context;
|
||||
}
|
||||
};
|
||||
|
||||
// Make sure storing/passing deopt frames by value doesn't truncate them.
|
||||
static_assert(sizeof(BuiltinContinuationDeoptFrame) == sizeof(DeoptFrame));
|
||||
|
||||
inline const BuiltinContinuationDeoptFrame&
|
||||
DeoptFrame::as_builtin_continuation() const {
|
||||
DCHECK_EQ(type(), FrameType::kBuiltinContinuationFrame);
|
||||
return static_cast<const BuiltinContinuationDeoptFrame&>(*this);
|
||||
}
|
||||
|
||||
class DeoptInfo {
|
||||
protected:
|
||||
DeoptInfo(Zone* zone, DeoptFrame top_frame);
|
||||
@ -1999,6 +2041,19 @@ class SetPendingMessage : public FixedInputValueNodeT<1, SetPendingMessage> {
|
||||
void PrintParams(std::ostream&, MaglevGraphLabeller*) const {}
|
||||
};
|
||||
|
||||
class ToBoolean : public FixedInputValueNodeT<1, ToBoolean> {
|
||||
using Base = FixedInputValueNodeT<1, ToBoolean>;
|
||||
|
||||
public:
|
||||
explicit ToBoolean(uint64_t bitfield) : Base(bitfield) {}
|
||||
|
||||
Input& value() { return Node::input(0); }
|
||||
|
||||
void AllocateVreg(MaglevVregAllocationState*);
|
||||
void GenerateCode(MaglevAssembler*, const ProcessingState&);
|
||||
void PrintParams(std::ostream&, MaglevGraphLabeller*) const {}
|
||||
};
|
||||
|
||||
class ToBooleanLogicalNot
|
||||
: public FixedInputValueNodeT<1, ToBooleanLogicalNot> {
|
||||
using Base = FixedInputValueNodeT<1, ToBooleanLogicalNot>;
|
||||
|
||||
@ -531,8 +531,7 @@ void StraightForwardRegisterAllocator::UpdateUse(
|
||||
void StraightForwardRegisterAllocator::UpdateUse(
|
||||
const EagerDeoptInfo& deopt_info) {
|
||||
detail::DeepForEachInput(
|
||||
&deopt_info,
|
||||
[&](ValueNode* node, interpreter::Register reg, InputLocation* input) {
|
||||
&deopt_info, [&](ValueNode* node, InputLocation* input) {
|
||||
if (v8_flags.trace_maglev_regalloc) {
|
||||
printing_visitor_->os()
|
||||
<< "- using " << PrintNodeLabel(graph_labeller(), node) << "\n";
|
||||
@ -549,8 +548,7 @@ void StraightForwardRegisterAllocator::UpdateUse(
|
||||
void StraightForwardRegisterAllocator::UpdateUse(
|
||||
const LazyDeoptInfo& deopt_info) {
|
||||
detail::DeepForEachInput(
|
||||
&deopt_info,
|
||||
[&](ValueNode* node, interpreter::Register reg, InputLocation* input) {
|
||||
&deopt_info, [&](ValueNode* node, InputLocation* input) {
|
||||
if (v8_flags.trace_maglev_regalloc) {
|
||||
printing_visitor_->os()
|
||||
<< "- using " << PrintNodeLabel(graph_labeller(), node) << "\n";
|
||||
|
||||
46
test/mjsunit/maglev/regress/regress-6373.js
Normal file
46
test/mjsunit/maglev/regress/regress-6373.js
Normal file
@ -0,0 +1,46 @@
|
||||
// Copyright 2022 the V8 project authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style license that can be
|
||||
// found in the LICENSE file.
|
||||
|
||||
// Flags: --allow-natives-syntax --maglev
|
||||
|
||||
(function() {
|
||||
var A = {};
|
||||
|
||||
A[Symbol.hasInstance] = function(x) {
|
||||
return 1;
|
||||
};
|
||||
|
||||
var a = {};
|
||||
|
||||
function foo(o) {
|
||||
return o instanceof A;
|
||||
};
|
||||
%PrepareFunctionForOptimization(foo);
|
||||
foo(a);
|
||||
foo(a);
|
||||
assertSame(foo(a), true);
|
||||
%OptimizeMaglevOnNextCall(foo);
|
||||
assertSame(foo(a), true);
|
||||
})();
|
||||
|
||||
(function() {
|
||||
var A = {};
|
||||
|
||||
A[Symbol.hasInstance] = function(x) {
|
||||
%DeoptimizeFunction(foo);
|
||||
return 1;
|
||||
};
|
||||
|
||||
var a = {};
|
||||
|
||||
function foo(o) {
|
||||
return o instanceof A;
|
||||
};
|
||||
%PrepareFunctionForOptimization(foo);
|
||||
foo(a);
|
||||
foo(a);
|
||||
assertSame(foo(a), true);
|
||||
%OptimizeMaglevOnNextCall(foo);
|
||||
assertSame(foo(a), true);
|
||||
})();
|
||||
Loading…
Reference in New Issue
Block a user