| // Copyright 2014 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. |
| |
| #include <limits> |
| |
| #include "src/compiler/access-info.h" |
| #include "src/compiler/js-heap-broker.h" |
| #include "src/compiler/node-matchers.h" |
| #include "src/compiler/representation-change.h" |
| #include "src/compiler/type-cache.h" |
| #include "src/objects/objects-inl.h" |
| #include "test/cctest/cctest.h" |
| #include "test/cctest/compiler/codegen-tester.h" |
| #include "test/cctest/compiler/graph-and-builders.h" |
| #include "test/cctest/compiler/value-helper.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace compiler { |
| |
| class RepresentationChangerTester : public HandleAndZoneScope, |
| public GraphAndBuilders { |
| public: |
| explicit RepresentationChangerTester(int num_parameters = 0) |
| : HandleAndZoneScope(kCompressGraphZone), |
| GraphAndBuilders(main_zone()), |
| javascript_(main_zone()), |
| jsgraph_(main_isolate(), main_graph_, &main_common_, &javascript_, |
| &main_simplified_, &main_machine_), |
| broker_(main_isolate(), main_zone()), |
| changer_(&jsgraph_, &broker_) { |
| Node* s = graph()->NewNode(common()->Start(num_parameters)); |
| graph()->SetStart(s); |
| } |
| |
| JSOperatorBuilder javascript_; |
| JSGraph jsgraph_; |
| JSHeapBroker broker_; |
| RepresentationChanger changer_; |
| |
| Isolate* isolate() { return main_isolate(); } |
| Graph* graph() { return main_graph_; } |
| CommonOperatorBuilder* common() { return &main_common_; } |
| JSGraph* jsgraph() { return &jsgraph_; } |
| RepresentationChanger* changer() { return &changer_; } |
| |
| // TODO(titzer): use ValueChecker / ValueUtil |
| void CheckInt32Constant(Node* n, int32_t expected) { |
| Int32Matcher m(n); |
| CHECK(m.HasResolvedValue()); |
| CHECK_EQ(expected, m.ResolvedValue()); |
| } |
| |
| void CheckInt64Constant(Node* n, int64_t expected) { |
| Int64Matcher m(n); |
| CHECK(m.HasResolvedValue()); |
| CHECK_EQ(expected, m.ResolvedValue()); |
| } |
| |
| void CheckUint32Constant(Node* n, uint32_t expected) { |
| Uint32Matcher m(n); |
| CHECK(m.HasResolvedValue()); |
| CHECK_EQ(static_cast<int>(expected), static_cast<int>(m.ResolvedValue())); |
| } |
| |
| void CheckFloat64Constant(Node* n, double expected) { |
| Float64Matcher m(n); |
| CHECK(m.HasResolvedValue()); |
| CHECK_DOUBLE_EQ(expected, m.ResolvedValue()); |
| } |
| |
| void CheckFloat32Constant(Node* n, float expected) { |
| CHECK_EQ(IrOpcode::kFloat32Constant, n->opcode()); |
| float fval = OpParameter<float>(n->op()); |
| CHECK_FLOAT_EQ(expected, fval); |
| } |
| |
| void CheckHeapConstant(Node* n, HeapObject expected) { |
| HeapObjectMatcher m(n); |
| CHECK(m.HasResolvedValue()); |
| CHECK_EQ(expected, *m.ResolvedValue()); |
| } |
| |
| void CheckNumberConstant(Node* n, double expected) { |
| NumberMatcher m(n); |
| CHECK_EQ(IrOpcode::kNumberConstant, n->opcode()); |
| CHECK(m.HasResolvedValue()); |
| CHECK_DOUBLE_EQ(expected, m.ResolvedValue()); |
| } |
| |
| Node* Parameter(int index = 0) { |
| Node* n = graph()->NewNode(common()->Parameter(index), graph()->start()); |
| NodeProperties::SetType(n, Type::Any()); |
| return n; |
| } |
| |
| Node* Return(Node* input) { |
| Node* n = graph()->NewNode(common()->Return(), jsgraph()->Int32Constant(0), |
| input, graph()->start(), graph()->start()); |
| return n; |
| } |
| |
| void CheckTypeError(MachineRepresentation from, Type from_type, |
| MachineRepresentation to) { |
| changer()->testing_type_errors_ = true; |
| changer()->type_error_ = false; |
| Node* n = Parameter(0); |
| Node* use = Return(n); |
| Node* c = changer()->GetRepresentationFor(n, from, from_type, use, |
| UseInfo(to, Truncation::None())); |
| CHECK(changer()->type_error_); |
| CHECK_EQ(n, c); |
| } |
| |
| void CheckNop(MachineRepresentation from, Type from_type, |
| MachineRepresentation to) { |
| Node* n = Parameter(0); |
| Node* use = Return(n); |
| Node* c = changer()->GetRepresentationFor(n, from, from_type, use, |
| UseInfo(to, Truncation::None())); |
| CHECK_EQ(n, c); |
| } |
| }; |
| |
| const MachineType kMachineTypes[] = { |
| MachineType::Float32(), MachineType::Float64(), MachineType::Int8(), |
| MachineType::Uint8(), MachineType::Int16(), MachineType::Uint16(), |
| MachineType::Int32(), MachineType::Uint32(), MachineType::Int64(), |
| MachineType::Uint64(), MachineType::AnyTagged()}; |
| |
| TEST(BoolToBit_constant) { |
| RepresentationChangerTester r; |
| |
| Node* true_node = r.jsgraph()->TrueConstant(); |
| Node* true_use = r.Return(true_node); |
| Node* true_bit = r.changer()->GetRepresentationFor( |
| true_node, MachineRepresentation::kTagged, Type::None(), true_use, |
| UseInfo(MachineRepresentation::kBit, Truncation::None())); |
| r.CheckInt32Constant(true_bit, 1); |
| |
| Node* false_node = r.jsgraph()->FalseConstant(); |
| Node* false_use = r.Return(false_node); |
| Node* false_bit = r.changer()->GetRepresentationFor( |
| false_node, MachineRepresentation::kTagged, Type::None(), false_use, |
| UseInfo(MachineRepresentation::kBit, Truncation::None())); |
| r.CheckInt32Constant(false_bit, 0); |
| } |
| |
| TEST(ToTagged_constant) { |
| RepresentationChangerTester r; |
| |
| for (double i : ValueHelper::float64_vector()) { |
| Node* n = r.jsgraph()->Constant(i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kFloat64, Type::None(), use, |
| UseInfo(MachineRepresentation::kTagged, Truncation::None())); |
| r.CheckNumberConstant(c, i); |
| } |
| |
| for (int i : ValueHelper::int32_vector()) { |
| Node* n = r.jsgraph()->Constant(i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kWord32, Type::Signed32(), use, |
| UseInfo(MachineRepresentation::kTagged, Truncation::None())); |
| r.CheckNumberConstant(c, i); |
| } |
| |
| for (uint32_t i : ValueHelper::uint32_vector()) { |
| Node* n = r.jsgraph()->Constant(i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kWord32, Type::Unsigned32(), use, |
| UseInfo(MachineRepresentation::kTagged, Truncation::None())); |
| r.CheckNumberConstant(c, i); |
| } |
| } |
| |
| TEST(ToFloat64_constant) { |
| RepresentationChangerTester r; |
| |
| for (double i : ValueHelper::float64_vector()) { |
| Node* n = r.jsgraph()->Constant(i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kTagged, Type::None(), use, |
| UseInfo(MachineRepresentation::kFloat64, Truncation::None())); |
| r.CheckFloat64Constant(c, i); |
| } |
| |
| for (int i : ValueHelper::int32_vector()) { |
| Node* n = r.jsgraph()->Constant(i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kWord32, Type::Signed32(), use, |
| UseInfo(MachineRepresentation::kFloat64, Truncation::None())); |
| r.CheckFloat64Constant(c, i); |
| } |
| |
| for (uint32_t i : ValueHelper::uint32_vector()) { |
| Node* n = r.jsgraph()->Constant(i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kWord32, Type::Unsigned32(), use, |
| UseInfo(MachineRepresentation::kFloat64, Truncation::None())); |
| r.CheckFloat64Constant(c, i); |
| } |
| |
| { |
| Node* n = r.jsgraph()->Constant(0); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kWord64, Type::Range(0, 0, r.zone()), use, |
| UseInfo(MachineRepresentation::kFloat64, Truncation::None())); |
| r.CheckFloat64Constant(c, 0); |
| } |
| } |
| |
| |
| static bool IsFloat32Int32(int32_t val) { |
| return val >= -(1 << 23) && val <= (1 << 23); |
| } |
| |
| |
| static bool IsFloat32Uint32(uint32_t val) { return val <= (1 << 23); } |
| |
| |
| TEST(ToFloat32_constant) { |
| RepresentationChangerTester r; |
| |
| for (double i : ValueHelper::float32_vector()) { |
| Node* n = r.jsgraph()->Constant(i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kTagged, Type::None(), use, |
| UseInfo(MachineRepresentation::kFloat32, Truncation::None())); |
| r.CheckFloat32Constant(c, i); |
| } |
| |
| for (int i : ValueHelper::int32_vector()) { |
| if (!IsFloat32Int32(i)) continue; |
| Node* n = r.jsgraph()->Constant(i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kWord32, Type::Signed32(), use, |
| UseInfo(MachineRepresentation::kFloat32, Truncation::None())); |
| r.CheckFloat32Constant(c, static_cast<float>(i)); |
| } |
| |
| for (uint32_t i : ValueHelper::uint32_vector()) { |
| if (!IsFloat32Uint32(i)) continue; |
| Node* n = r.jsgraph()->Constant(i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kWord32, Type::Unsigned32(), use, |
| UseInfo(MachineRepresentation::kFloat32, Truncation::None())); |
| r.CheckFloat32Constant(c, static_cast<float>(i)); |
| } |
| } |
| |
| TEST(ToInt32_constant) { |
| RepresentationChangerTester r; |
| { |
| FOR_INT32_INPUTS(i) { |
| Node* n = r.jsgraph()->Constant(i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kTagged, Type::Signed32(), use, |
| UseInfo(MachineRepresentation::kWord32, Truncation::None())); |
| r.CheckInt32Constant(c, i); |
| } |
| } |
| } |
| |
| TEST(ToUint32_constant) { |
| RepresentationChangerTester r; |
| FOR_UINT32_INPUTS(i) { |
| Node* n = r.jsgraph()->Constant(static_cast<double>(i)); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kTagged, Type::Unsigned32(), use, |
| UseInfo(MachineRepresentation::kWord32, Truncation::None())); |
| r.CheckUint32Constant(c, i); |
| } |
| } |
| |
| TEST(ToInt64_constant) { |
| RepresentationChangerTester r; |
| FOR_INT32_INPUTS(i) { |
| Node* n = r.jsgraph()->Constant(i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kTagged, TypeCache::Get()->kSafeInteger, use, |
| UseInfo(MachineRepresentation::kWord64, Truncation::None())); |
| r.CheckInt64Constant(c, i); |
| } |
| } |
| |
| static void CheckChange(IrOpcode::Value expected, MachineRepresentation from, |
| Type from_type, UseInfo use_info) { |
| RepresentationChangerTester r; |
| |
| Node* n = r.Parameter(); |
| Node* use = r.Return(n); |
| Node* c = |
| r.changer()->GetRepresentationFor(n, from, from_type, use, use_info); |
| |
| CHECK_NE(c, n); |
| CHECK_EQ(expected, c->opcode()); |
| CHECK_EQ(n, c->InputAt(0)); |
| |
| if (expected == IrOpcode::kCheckedFloat64ToInt32 || |
| expected == IrOpcode::kCheckedFloat64ToInt64) { |
| CheckForMinusZeroMode mode = |
| from_type.Maybe(Type::MinusZero()) |
| ? use_info.minus_zero_check() |
| : CheckForMinusZeroMode::kDontCheckForMinusZero; |
| CHECK_EQ(mode, CheckMinusZeroParametersOf(c->op()).mode()); |
| } |
| } |
| |
| static void CheckChange(IrOpcode::Value expected, MachineRepresentation from, |
| Type from_type, MachineRepresentation to) { |
| CheckChange(expected, from, from_type, UseInfo(to, Truncation::Any())); |
| } |
| |
| static void CheckTwoChanges(IrOpcode::Value expected2, |
| IrOpcode::Value expected1, |
| MachineRepresentation from, Type from_type, |
| MachineRepresentation to, UseInfo use_info) { |
| RepresentationChangerTester r; |
| |
| Node* n = r.Parameter(); |
| Node* use = r.Return(n); |
| Node* c1 = |
| r.changer()->GetRepresentationFor(n, from, from_type, use, use_info); |
| |
| CHECK_NE(c1, n); |
| CHECK_EQ(expected1, c1->opcode()); |
| Node* c2 = c1->InputAt(0); |
| CHECK_NE(c2, n); |
| CHECK_EQ(expected2, c2->opcode()); |
| CHECK_EQ(n, c2->InputAt(0)); |
| } |
| |
| static void CheckTwoChanges(IrOpcode::Value expected2, |
| IrOpcode::Value expected1, |
| MachineRepresentation from, Type from_type, |
| MachineRepresentation to) { |
| CheckTwoChanges(expected2, expected1, from, from_type, to, |
| UseInfo(to, Truncation::None())); |
| } |
| |
| static void CheckChange(IrOpcode::Value expected, MachineRepresentation from, |
| Type from_type, MachineRepresentation to, |
| UseInfo use_info) { |
| RepresentationChangerTester r; |
| |
| Node* n = r.Parameter(); |
| Node* use = r.Return(n); |
| Node* c = |
| r.changer()->GetRepresentationFor(n, from, from_type, use, use_info); |
| |
| CHECK_NE(c, n); |
| CHECK_EQ(expected, c->opcode()); |
| CHECK_EQ(n, c->InputAt(0)); |
| } |
| |
| TEST(Word64) { |
| CheckChange(IrOpcode::kChangeInt32ToInt64, MachineRepresentation::kWord8, |
| TypeCache::Get()->kInt8, MachineRepresentation::kWord64); |
| CheckChange(IrOpcode::kChangeUint32ToUint64, MachineRepresentation::kWord8, |
| TypeCache::Get()->kUint8, MachineRepresentation::kWord64); |
| CheckChange(IrOpcode::kChangeInt32ToInt64, MachineRepresentation::kWord16, |
| TypeCache::Get()->kInt16, MachineRepresentation::kWord64); |
| CheckChange(IrOpcode::kChangeUint32ToUint64, MachineRepresentation::kWord16, |
| TypeCache::Get()->kUint16, MachineRepresentation::kWord64); |
| CheckChange(IrOpcode::kChangeInt32ToInt64, MachineRepresentation::kWord32, |
| Type::Signed32(), MachineRepresentation::kWord64); |
| CheckChange( |
| IrOpcode::kChangeInt32ToInt64, MachineRepresentation::kWord32, |
| Type::Signed32OrMinusZero(), MachineRepresentation::kWord64, |
| UseInfo(MachineRepresentation::kWord64, Truncation::Any(kIdentifyZeros))); |
| CheckChange(IrOpcode::kChangeUint32ToUint64, MachineRepresentation::kWord32, |
| Type::Unsigned32(), MachineRepresentation::kWord64); |
| CheckChange( |
| IrOpcode::kChangeUint32ToUint64, MachineRepresentation::kWord32, |
| Type::Unsigned32OrMinusZero(), MachineRepresentation::kWord64, |
| UseInfo(MachineRepresentation::kWord64, Truncation::Any(kIdentifyZeros))); |
| |
| CheckChange(IrOpcode::kTruncateInt64ToInt32, MachineRepresentation::kWord64, |
| Type::Signed32(), MachineRepresentation::kWord32); |
| CheckChange(IrOpcode::kTruncateInt64ToInt32, MachineRepresentation::kWord64, |
| Type::Unsigned32(), MachineRepresentation::kWord32); |
| CheckChange(IrOpcode::kTruncateInt64ToInt32, MachineRepresentation::kWord64, |
| TypeCache::Get()->kSafeInteger, MachineRepresentation::kWord32, |
| UseInfo::TruncatingWord32()); |
| CheckChange( |
| IrOpcode::kCheckedInt64ToInt32, MachineRepresentation::kWord64, |
| TypeCache::Get()->kSafeInteger, MachineRepresentation::kWord32, |
| UseInfo::CheckedSigned32AsWord32(kIdentifyZeros, FeedbackSource())); |
| CheckChange( |
| IrOpcode::kCheckedUint64ToInt32, MachineRepresentation::kWord64, |
| TypeCache::Get()->kPositiveSafeInteger, MachineRepresentation::kWord32, |
| UseInfo::CheckedSigned32AsWord32(kIdentifyZeros, FeedbackSource())); |
| |
| CheckChange(IrOpcode::kChangeFloat64ToInt64, MachineRepresentation::kFloat64, |
| Type::Signed32(), MachineRepresentation::kWord64); |
| CheckChange(IrOpcode::kChangeFloat64ToInt64, MachineRepresentation::kFloat64, |
| Type::Unsigned32(), MachineRepresentation::kWord64); |
| CheckChange(IrOpcode::kChangeFloat64ToInt64, MachineRepresentation::kFloat64, |
| TypeCache::Get()->kSafeInteger, MachineRepresentation::kWord64); |
| CheckChange(IrOpcode::kChangeFloat64ToInt64, MachineRepresentation::kFloat64, |
| TypeCache::Get()->kInt64, MachineRepresentation::kWord64); |
| CheckChange(IrOpcode::kChangeFloat64ToUint64, MachineRepresentation::kFloat64, |
| TypeCache::Get()->kUint64, MachineRepresentation::kWord64); |
| CheckChange( |
| IrOpcode::kCheckedFloat64ToInt64, MachineRepresentation::kFloat64, |
| Type::Number(), MachineRepresentation::kWord64, |
| UseInfo::CheckedSigned64AsWord64(kIdentifyZeros, FeedbackSource())); |
| |
| CheckChange(IrOpcode::kChangeInt64ToFloat64, MachineRepresentation::kWord64, |
| Type::Signed32(), MachineRepresentation::kFloat64); |
| CheckChange(IrOpcode::kChangeInt64ToFloat64, MachineRepresentation::kWord64, |
| Type::Unsigned32(), MachineRepresentation::kFloat64); |
| CheckChange(IrOpcode::kChangeInt64ToFloat64, MachineRepresentation::kWord64, |
| TypeCache::Get()->kSafeInteger, MachineRepresentation::kFloat64); |
| |
| CheckTwoChanges(IrOpcode::kChangeFloat32ToFloat64, |
| IrOpcode::kChangeFloat64ToInt64, |
| MachineRepresentation::kFloat32, Type::Signed32(), |
| MachineRepresentation::kWord64); |
| CheckTwoChanges(IrOpcode::kChangeFloat32ToFloat64, |
| IrOpcode::kChangeFloat64ToInt64, |
| MachineRepresentation::kFloat32, Type::Unsigned32(), |
| MachineRepresentation::kWord64); |
| CheckTwoChanges(IrOpcode::kChangeFloat32ToFloat64, |
| IrOpcode::kChangeFloat64ToInt64, |
| MachineRepresentation::kFloat32, TypeCache::Get()->kInt64, |
| MachineRepresentation::kWord64); |
| CheckTwoChanges(IrOpcode::kChangeFloat32ToFloat64, |
| IrOpcode::kChangeFloat64ToUint64, |
| MachineRepresentation::kFloat32, TypeCache::Get()->kUint64, |
| MachineRepresentation::kWord64); |
| CheckTwoChanges( |
| IrOpcode::kChangeFloat32ToFloat64, IrOpcode::kCheckedFloat64ToInt64, |
| MachineRepresentation::kFloat32, Type::Number(), |
| MachineRepresentation::kWord64, |
| UseInfo::CheckedSigned64AsWord64(kIdentifyZeros, FeedbackSource())); |
| |
| CheckTwoChanges(IrOpcode::kChangeInt64ToFloat64, |
| IrOpcode::kTruncateFloat64ToFloat32, |
| MachineRepresentation::kWord64, Type::Signed32(), |
| MachineRepresentation::kFloat32); |
| |
| CheckChange(IrOpcode::kChangeTaggedToInt64, MachineRepresentation::kTagged, |
| Type::Signed32(), MachineRepresentation::kWord64); |
| CheckChange(IrOpcode::kChangeTaggedToInt64, MachineRepresentation::kTagged, |
| Type::Unsigned32(), MachineRepresentation::kWord64); |
| CheckChange(IrOpcode::kChangeTaggedToInt64, MachineRepresentation::kTagged, |
| TypeCache::Get()->kSafeInteger, MachineRepresentation::kWord64); |
| CheckChange(IrOpcode::kChangeTaggedToInt64, MachineRepresentation::kTagged, |
| TypeCache::Get()->kInt64, MachineRepresentation::kWord64); |
| CheckChange(IrOpcode::kChangeTaggedSignedToInt64, |
| MachineRepresentation::kTaggedSigned, Type::SignedSmall(), |
| MachineRepresentation::kWord64); |
| CheckChange( |
| IrOpcode::kCheckedTaggedToInt64, MachineRepresentation::kTagged, |
| Type::Number(), MachineRepresentation::kWord64, |
| UseInfo::CheckedSigned64AsWord64(kIdentifyZeros, FeedbackSource())); |
| CheckChange( |
| IrOpcode::kCheckedTaggedToInt64, MachineRepresentation::kTaggedPointer, |
| Type::Number(), MachineRepresentation::kWord64, |
| UseInfo::CheckedSigned64AsWord64(kIdentifyZeros, FeedbackSource())); |
| |
| CheckTwoChanges(IrOpcode::kTruncateInt64ToInt32, |
| IrOpcode::kChangeInt31ToTaggedSigned, |
| MachineRepresentation::kWord64, Type::Signed31(), |
| MachineRepresentation::kTagged); |
| CheckTwoChanges(IrOpcode::kTruncateInt64ToInt32, |
| IrOpcode::kChangeInt32ToTagged, |
| MachineRepresentation::kWord64, Type::Signed32(), |
| MachineRepresentation::kTagged); |
| CheckTwoChanges(IrOpcode::kTruncateInt64ToInt32, |
| IrOpcode::kChangeUint32ToTagged, |
| MachineRepresentation::kWord64, Type::Unsigned32(), |
| MachineRepresentation::kTagged); |
| CheckChange(IrOpcode::kChangeInt64ToTagged, MachineRepresentation::kWord64, |
| TypeCache::Get()->kSafeInteger, MachineRepresentation::kTagged); |
| CheckChange(IrOpcode::kChangeUint64ToTagged, MachineRepresentation::kWord64, |
| TypeCache::Get()->kPositiveSafeInteger, |
| MachineRepresentation::kTagged); |
| |
| CheckTwoChanges(IrOpcode::kTruncateInt64ToInt32, |
| IrOpcode::kChangeInt31ToTaggedSigned, |
| MachineRepresentation::kWord64, Type::Signed31(), |
| MachineRepresentation::kTaggedSigned); |
| if (SmiValuesAre32Bits()) { |
| CheckTwoChanges(IrOpcode::kTruncateInt64ToInt32, |
| IrOpcode::kChangeInt32ToTagged, |
| MachineRepresentation::kWord64, Type::Signed32(), |
| MachineRepresentation::kTaggedSigned); |
| } |
| CheckChange(IrOpcode::kCheckedInt64ToTaggedSigned, |
| MachineRepresentation::kWord64, TypeCache::Get()->kSafeInteger, |
| MachineRepresentation::kTaggedSigned, |
| UseInfo::CheckedSignedSmallAsTaggedSigned(FeedbackSource())); |
| CheckChange(IrOpcode::kCheckedUint64ToTaggedSigned, |
| MachineRepresentation::kWord64, |
| TypeCache::Get()->kPositiveSafeInteger, |
| MachineRepresentation::kTaggedSigned, |
| UseInfo::CheckedSignedSmallAsTaggedSigned(FeedbackSource())); |
| |
| CheckTwoChanges( |
| IrOpcode::kChangeInt64ToFloat64, IrOpcode::kChangeFloat64ToTaggedPointer, |
| MachineRepresentation::kWord64, TypeCache::Get()->kSafeInteger, |
| MachineRepresentation::kTaggedPointer); |
| } |
| |
| TEST(SingleChanges) { |
| CheckChange(IrOpcode::kChangeTaggedToBit, MachineRepresentation::kTagged, |
| Type::Boolean(), MachineRepresentation::kBit); |
| CheckChange(IrOpcode::kChangeBitToTagged, MachineRepresentation::kBit, |
| Type::Boolean(), MachineRepresentation::kTagged); |
| |
| CheckChange(IrOpcode::kChangeInt31ToTaggedSigned, |
| MachineRepresentation::kWord32, Type::Signed31(), |
| MachineRepresentation::kTagged); |
| CheckChange(IrOpcode::kChangeInt32ToTagged, MachineRepresentation::kWord32, |
| Type::Signed32(), MachineRepresentation::kTagged); |
| CheckChange(IrOpcode::kChangeUint32ToTagged, MachineRepresentation::kWord32, |
| Type::Unsigned32(), MachineRepresentation::kTagged); |
| CheckChange(IrOpcode::kChangeFloat64ToTagged, MachineRepresentation::kFloat64, |
| Type::Number(), MachineRepresentation::kTagged); |
| CheckTwoChanges(IrOpcode::kChangeFloat64ToInt32, |
| IrOpcode::kChangeInt31ToTaggedSigned, |
| MachineRepresentation::kFloat64, Type::Signed31(), |
| MachineRepresentation::kTagged); |
| CheckTwoChanges(IrOpcode::kChangeFloat64ToInt32, |
| IrOpcode::kChangeInt32ToTagged, |
| MachineRepresentation::kFloat64, Type::Signed32(), |
| MachineRepresentation::kTagged); |
| CheckTwoChanges(IrOpcode::kChangeFloat64ToUint32, |
| IrOpcode::kChangeUint32ToTagged, |
| MachineRepresentation::kFloat64, Type::Unsigned32(), |
| MachineRepresentation::kTagged); |
| |
| CheckChange(IrOpcode::kChangeTaggedToInt32, MachineRepresentation::kTagged, |
| Type::Signed32(), MachineRepresentation::kWord32); |
| CheckChange(IrOpcode::kChangeTaggedToUint32, MachineRepresentation::kTagged, |
| Type::Unsigned32(), MachineRepresentation::kWord32); |
| CheckChange(IrOpcode::kChangeTaggedToFloat64, MachineRepresentation::kTagged, |
| Type::Number(), MachineRepresentation::kFloat64); |
| CheckChange(IrOpcode::kTruncateTaggedToFloat64, |
| MachineRepresentation::kTagged, Type::NumberOrUndefined(), |
| UseInfo(MachineRepresentation::kFloat64, |
| Truncation::OddballAndBigIntToNumber())); |
| CheckChange(IrOpcode::kChangeTaggedToFloat64, MachineRepresentation::kTagged, |
| Type::Signed31(), MachineRepresentation::kFloat64); |
| |
| // Int32,Uint32 <-> Float64 are actually machine conversions. |
| CheckChange(IrOpcode::kChangeInt32ToFloat64, MachineRepresentation::kWord32, |
| Type::Signed32(), MachineRepresentation::kFloat64); |
| CheckChange(IrOpcode::kChangeInt32ToFloat64, MachineRepresentation::kWord32, |
| Type::Signed32OrMinusZero(), MachineRepresentation::kFloat64, |
| UseInfo(MachineRepresentation::kFloat64, |
| Truncation::Any(kIdentifyZeros))); |
| CheckChange(IrOpcode::kChangeUint32ToFloat64, MachineRepresentation::kWord32, |
| Type::Unsigned32(), MachineRepresentation::kFloat64); |
| CheckChange(IrOpcode::kChangeFloat64ToInt32, MachineRepresentation::kFloat64, |
| Type::Signed32(), MachineRepresentation::kWord32); |
| CheckChange(IrOpcode::kChangeFloat64ToUint32, MachineRepresentation::kFloat64, |
| Type::Unsigned32(), MachineRepresentation::kWord32); |
| |
| CheckChange(IrOpcode::kTruncateFloat64ToFloat32, |
| MachineRepresentation::kFloat64, Type::Number(), |
| MachineRepresentation::kFloat32); |
| |
| // Int32,Uint32 <-> Float32 require two changes. |
| CheckTwoChanges(IrOpcode::kChangeInt32ToFloat64, |
| IrOpcode::kTruncateFloat64ToFloat32, |
| MachineRepresentation::kWord32, Type::Signed32(), |
| MachineRepresentation::kFloat32); |
| CheckTwoChanges(IrOpcode::kChangeUint32ToFloat64, |
| IrOpcode::kTruncateFloat64ToFloat32, |
| MachineRepresentation::kWord32, Type::Unsigned32(), |
| MachineRepresentation::kFloat32); |
| CheckTwoChanges(IrOpcode::kChangeFloat32ToFloat64, |
| IrOpcode::kChangeFloat64ToInt32, |
| MachineRepresentation::kFloat32, Type::Signed32(), |
| MachineRepresentation::kWord32); |
| CheckTwoChanges(IrOpcode::kChangeFloat32ToFloat64, |
| IrOpcode::kChangeFloat64ToUint32, |
| MachineRepresentation::kFloat32, Type::Unsigned32(), |
| MachineRepresentation::kWord32); |
| |
| // Float32 <-> Tagged require two changes. |
| CheckTwoChanges(IrOpcode::kChangeFloat32ToFloat64, |
| IrOpcode::kChangeFloat64ToTagged, |
| MachineRepresentation::kFloat32, Type::Number(), |
| MachineRepresentation::kTagged); |
| CheckTwoChanges(IrOpcode::kChangeTaggedToFloat64, |
| IrOpcode::kTruncateFloat64ToFloat32, |
| MachineRepresentation::kTagged, Type::Number(), |
| MachineRepresentation::kFloat32); |
| } |
| |
| |
| TEST(SignednessInWord32) { |
| RepresentationChangerTester r; |
| |
| CheckChange(IrOpcode::kChangeTaggedToInt32, MachineRepresentation::kTagged, |
| Type::Signed32(), MachineRepresentation::kWord32); |
| CheckChange(IrOpcode::kChangeTaggedToUint32, MachineRepresentation::kTagged, |
| Type::Unsigned32(), MachineRepresentation::kWord32); |
| CheckChange(IrOpcode::kChangeInt32ToFloat64, MachineRepresentation::kWord32, |
| Type::Signed32(), MachineRepresentation::kFloat64); |
| CheckChange(IrOpcode::kChangeFloat64ToInt32, MachineRepresentation::kFloat64, |
| Type::Signed32(), MachineRepresentation::kWord32); |
| CheckChange(IrOpcode::kTruncateFloat64ToWord32, |
| MachineRepresentation::kFloat64, Type::Number(), |
| MachineRepresentation::kWord32, |
| UseInfo(MachineRepresentation::kWord32, Truncation::Word32())); |
| CheckChange(IrOpcode::kCheckedTruncateTaggedToWord32, |
| MachineRepresentation::kTagged, Type::NonInternal(), |
| MachineRepresentation::kWord32, |
| UseInfo::CheckedNumberOrOddballAsWord32(FeedbackSource())); |
| |
| CheckTwoChanges(IrOpcode::kChangeInt32ToFloat64, |
| IrOpcode::kTruncateFloat64ToFloat32, |
| MachineRepresentation::kWord32, Type::Signed32(), |
| MachineRepresentation::kFloat32); |
| CheckTwoChanges(IrOpcode::kChangeFloat32ToFloat64, |
| IrOpcode::kTruncateFloat64ToWord32, |
| MachineRepresentation::kFloat32, Type::Number(), |
| MachineRepresentation::kWord32); |
| |
| CheckChange( |
| IrOpcode::kCheckedUint32ToInt32, MachineRepresentation::kWord32, |
| Type::Unsigned32(), |
| UseInfo::CheckedSigned32AsWord32(kIdentifyZeros, FeedbackSource())); |
| } |
| |
| static void TestMinusZeroCheck(IrOpcode::Value expected, Type from_type) { |
| RepresentationChangerTester r; |
| |
| CheckChange( |
| expected, MachineRepresentation::kFloat64, from_type, |
| UseInfo::CheckedSignedSmallAsWord32(kDistinguishZeros, FeedbackSource())); |
| |
| CheckChange( |
| expected, MachineRepresentation::kFloat64, from_type, |
| UseInfo::CheckedSignedSmallAsWord32(kIdentifyZeros, FeedbackSource())); |
| |
| CheckChange( |
| expected, MachineRepresentation::kFloat64, from_type, |
| UseInfo::CheckedSigned32AsWord32(kDistinguishZeros, FeedbackSource())); |
| |
| CheckChange( |
| expected, MachineRepresentation::kFloat64, from_type, |
| UseInfo::CheckedSigned32AsWord32(kDistinguishZeros, FeedbackSource())); |
| } |
| |
| TEST(MinusZeroCheck) { |
| TestMinusZeroCheck(IrOpcode::kCheckedFloat64ToInt32, Type::NumberOrOddball()); |
| // PlainNumber cannot be minus zero so the minus zero check should be |
| // eliminated. |
| TestMinusZeroCheck(IrOpcode::kCheckedFloat64ToInt32, Type::PlainNumber()); |
| } |
| |
| TEST(Nops) { |
| RepresentationChangerTester r; |
| |
| // X -> X is always a nop for any single representation X. |
| for (size_t i = 0; i < arraysize(kMachineTypes); i++) { |
| r.CheckNop(kMachineTypes[i].representation(), Type::Number(), |
| kMachineTypes[i].representation()); |
| } |
| |
| // 32-bit floats. |
| r.CheckNop(MachineRepresentation::kFloat32, Type::Number(), |
| MachineRepresentation::kFloat32); |
| |
| // 32-bit words can be used as smaller word sizes and vice versa, because |
| // loads from memory implicitly sign or zero extend the value to the |
| // full machine word size, and stores implicitly truncate. |
| r.CheckNop(MachineRepresentation::kWord32, Type::Signed32(), |
| MachineRepresentation::kWord8); |
| r.CheckNop(MachineRepresentation::kWord32, Type::Signed32(), |
| MachineRepresentation::kWord16); |
| r.CheckNop(MachineRepresentation::kWord32, Type::Signed32(), |
| MachineRepresentation::kWord32); |
| r.CheckNop(MachineRepresentation::kWord8, Type::Signed32(), |
| MachineRepresentation::kWord32); |
| r.CheckNop(MachineRepresentation::kWord16, Type::Signed32(), |
| MachineRepresentation::kWord32); |
| |
| // kRepBit (result of comparison) is implicitly a wordish thing. |
| r.CheckNop(MachineRepresentation::kBit, Type::Boolean(), |
| MachineRepresentation::kWord8); |
| r.CheckNop(MachineRepresentation::kBit, Type::Boolean(), |
| MachineRepresentation::kWord16); |
| r.CheckNop(MachineRepresentation::kBit, Type::Boolean(), |
| MachineRepresentation::kWord32); |
| } |
| |
| |
| TEST(TypeErrors) { |
| RepresentationChangerTester r; |
| |
| // Floats cannot be implicitly converted to/from comparison conditions. |
| r.CheckTypeError(MachineRepresentation::kBit, Type::Number(), |
| MachineRepresentation::kFloat32); |
| r.CheckTypeError(MachineRepresentation::kBit, Type::Boolean(), |
| MachineRepresentation::kFloat32); |
| |
| // Word64 is internal and shouldn't be implicitly converted. |
| r.CheckTypeError(MachineRepresentation::kWord64, Type::Internal(), |
| MachineRepresentation::kTagged); |
| r.CheckTypeError(MachineRepresentation::kTagged, Type::Number(), |
| MachineRepresentation::kWord64); |
| r.CheckTypeError(MachineRepresentation::kTagged, Type::Boolean(), |
| MachineRepresentation::kWord64); |
| r.CheckTypeError(MachineRepresentation::kWord64, Type::Internal(), |
| MachineRepresentation::kWord32); |
| r.CheckTypeError(MachineRepresentation::kWord32, Type::Number(), |
| MachineRepresentation::kWord64); |
| } |
| |
| } // namespace compiler |
| } // namespace internal |
| } // namespace v8 |
