| // 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 "test/cctest/cctest.h" |
| #include "test/cctest/compiler/codegen-tester.h" |
| #include "test/cctest/compiler/graph-builder-tester.h" |
| #include "test/cctest/compiler/value-helper.h" |
| |
| #include "src/compiler/node-matchers.h" |
| #include "src/compiler/representation-change.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace compiler { |
| |
| class RepresentationChangerTester : public HandleAndZoneScope, |
| public GraphAndBuilders { |
| public: |
| explicit RepresentationChangerTester(int num_parameters = 0) |
| : GraphAndBuilders(main_zone()), |
| javascript_(main_zone()), |
| jsgraph_(main_isolate(), main_graph_, &main_common_, &javascript_, |
| &main_simplified_, &main_machine_), |
| changer_(&jsgraph_, main_isolate()) { |
| Node* s = graph()->NewNode(common()->Start(num_parameters)); |
| graph()->SetStart(s); |
| } |
| |
| JSOperatorBuilder javascript_; |
| JSGraph jsgraph_; |
| 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.HasValue()); |
| CHECK_EQ(expected, m.Value()); |
| } |
| |
| void CheckUint32Constant(Node* n, uint32_t expected) { |
| Uint32Matcher m(n); |
| CHECK(m.HasValue()); |
| CHECK_EQ(static_cast<int>(expected), static_cast<int>(m.Value())); |
| } |
| |
| void CheckFloat64Constant(Node* n, double expected) { |
| Float64Matcher m(n); |
| CHECK(m.HasValue()); |
| CHECK_DOUBLE_EQ(expected, m.Value()); |
| } |
| |
| 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.HasValue()); |
| CHECK_EQ(expected, *m.Value()); |
| } |
| |
| void CheckNumberConstant(Node* n, double expected) { |
| NumberMatcher m(n); |
| CHECK_EQ(IrOpcode::kNumberConstant, n->opcode()); |
| CHECK(m.HasValue()); |
| CHECK_DOUBLE_EQ(expected, m.Value()); |
| } |
| |
| 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(), 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(BitToBool_constant) { |
| RepresentationChangerTester r; |
| |
| for (int i = -5; i < 5; i++) { |
| Node* node = r.jsgraph()->Int32Constant(i); |
| Node* use = r.Return(node); |
| Node* val = r.changer()->GetRepresentationFor( |
| node, MachineRepresentation::kBit, Type::Boolean(), use, |
| UseInfo(MachineRepresentation::kTagged, Truncation::None())); |
| r.CheckHeapConstant(val, i == 0 ? r.isolate()->heap()->false_value() |
| : r.isolate()->heap()->true_value()); |
| } |
| } |
| |
| |
| TEST(ToTagged_constant) { |
| RepresentationChangerTester r; |
| |
| { |
| FOR_FLOAT64_INPUTS(i) { |
| Node* n = r.jsgraph()->Float64Constant(*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_FLOAT64_INPUTS(i) { |
| 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_FLOAT32_INPUTS(i) { |
| Node* n = r.jsgraph()->Float32Constant(*i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kFloat32, Type::None(), use, |
| UseInfo(MachineRepresentation::kTagged, Truncation::None())); |
| r.CheckNumberConstant(c, *i); |
| } |
| } |
| |
| { |
| FOR_INT32_INPUTS(i) { |
| Node* n = r.jsgraph()->Int32Constant(*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_INPUTS(i) { |
| Node* n = r.jsgraph()->Int32Constant(*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_FLOAT64_INPUTS(i) { |
| Node* n = r.jsgraph()->Float64Constant(*i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kFloat64, Type::None(), use, |
| UseInfo(MachineRepresentation::kFloat64, Truncation::None())); |
| CHECK_EQ(n, c); |
| } |
| } |
| |
| { |
| FOR_FLOAT64_INPUTS(i) { |
| 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_FLOAT32_INPUTS(i) { |
| Node* n = r.jsgraph()->Float32Constant(*i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kFloat32, Type::None(), use, |
| UseInfo(MachineRepresentation::kFloat64, Truncation::None())); |
| r.CheckFloat64Constant(c, *i); |
| } |
| } |
| |
| { |
| FOR_INT32_INPUTS(i) { |
| Node* n = r.jsgraph()->Int32Constant(*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_INPUTS(i) { |
| Node* n = r.jsgraph()->Int32Constant(*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); |
| } |
| } |
| } |
| |
| |
| 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_FLOAT32_INPUTS(i) { |
| Node* n = r.jsgraph()->Float32Constant(*i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kFloat32, Type::None(), use, |
| UseInfo(MachineRepresentation::kFloat32, Truncation::None())); |
| CHECK_EQ(n, c); |
| } |
| } |
| |
| { |
| FOR_FLOAT32_INPUTS(i) { |
| 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_FLOAT32_INPUTS(i) { |
| Node* n = r.jsgraph()->Float64Constant(*i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kFloat64, Type::None(), use, |
| UseInfo(MachineRepresentation::kFloat32, Truncation::None())); |
| r.CheckFloat32Constant(c, *i); |
| } |
| } |
| |
| { |
| FOR_INT32_INPUTS(i) { |
| if (!IsFloat32Int32(*i)) continue; |
| Node* n = r.jsgraph()->Int32Constant(*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_INPUTS(i) { |
| if (!IsFloat32Uint32(*i)) continue; |
| Node* n = r.jsgraph()->Int32Constant(*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()->Int32Constant(*i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kWord32, Type::Signed32(), use, |
| UseInfo(MachineRepresentation::kWord32, Truncation::None())); |
| r.CheckInt32Constant(c, *i); |
| } |
| } |
| |
| { |
| FOR_INT32_INPUTS(i) { |
| if (!IsFloat32Int32(*i)) continue; |
| Node* n = r.jsgraph()->Float32Constant(static_cast<float>(*i)); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kFloat32, Type::Signed32(), use, |
| UseInfo(MachineRepresentation::kWord32, Truncation::None())); |
| r.CheckInt32Constant(c, *i); |
| } |
| } |
| |
| { |
| FOR_INT32_INPUTS(i) { |
| Node* n = r.jsgraph()->Float64Constant(*i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kFloat64, Type::Signed32(), use, |
| UseInfo(MachineRepresentation::kWord32, Truncation::None())); |
| r.CheckInt32Constant(c, *i); |
| } |
| } |
| |
| { |
| 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()->Int32Constant(*i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kWord32, Type::Unsigned32(), use, |
| UseInfo(MachineRepresentation::kWord32, Truncation::None())); |
| r.CheckUint32Constant(c, *i); |
| } |
| } |
| |
| { |
| FOR_UINT32_INPUTS(i) { |
| if (!IsFloat32Uint32(*i)) continue; |
| Node* n = r.jsgraph()->Float32Constant(static_cast<float>(*i)); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kFloat32, Type::Unsigned32(), use, |
| UseInfo(MachineRepresentation::kWord32, Truncation::None())); |
| r.CheckUint32Constant(c, *i); |
| } |
| } |
| |
| { |
| FOR_UINT32_INPUTS(i) { |
| Node* n = r.jsgraph()->Float64Constant(*i); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor( |
| n, MachineRepresentation::kFloat64, Type::Unsigned32(), use, |
| UseInfo(MachineRepresentation::kWord32, Truncation::None())); |
| r.CheckUint32Constant(c, *i); |
| } |
| } |
| |
| { |
| 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); |
| } |
| } |
| } |
| |
| |
| static void CheckChange(IrOpcode::Value expected, MachineRepresentation from, |
| Type* from_type, MachineRepresentation to) { |
| RepresentationChangerTester r; |
| |
| Node* n = r.Parameter(); |
| Node* use = r.Return(n); |
| Node* c = r.changer()->GetRepresentationFor(n, from, from_type, use, |
| UseInfo(to, Truncation::None())); |
| |
| CHECK_NE(c, n); |
| CHECK_EQ(expected, c->opcode()); |
| CHECK_EQ(n, c->InputAt(0)); |
| } |
| |
| |
| static void CheckTwoChanges(IrOpcode::Value expected2, |
| IrOpcode::Value expected1, |
| MachineRepresentation from, Type* from_type, |
| MachineRepresentation to) { |
| RepresentationChangerTester r; |
| |
| Node* n = r.Parameter(); |
| Node* use = r.Return(n); |
| Node* c1 = r.changer()->GetRepresentationFor(n, from, from_type, use, |
| UseInfo(to, Truncation::None())); |
| |
| 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)); |
| } |
| |
| |
| TEST(SingleChanges) { |
| CheckChange(IrOpcode::kChangeTaggedToBit, MachineRepresentation::kTagged, |
| Type::None(), MachineRepresentation::kBit); |
| CheckChange(IrOpcode::kChangeBitToTagged, MachineRepresentation::kBit, |
| Type::None(), 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::kChangeTaggedToFloat64, MachineRepresentation::kTagged, |
| Type::Number(), MachineRepresentation::kFloat64); |
| CheckChange(IrOpcode::kTruncateTaggedToFloat64, |
| MachineRepresentation::kTagged, Type::NumberOrUndefined(), |
| MachineRepresentation::kFloat64); |
| CheckTwoChanges(IrOpcode::kChangeTaggedSignedToInt32, |
| IrOpcode::kChangeInt32ToFloat64, |
| MachineRepresentation::kTagged, Type::TaggedSigned(), |
| MachineRepresentation::kFloat64); |
| |
| // Int32,Uint32 <-> Float64 are actually machine conversions. |
| CheckChange(IrOpcode::kChangeInt32ToFloat64, MachineRepresentation::kWord32, |
| Type::Signed32(), MachineRepresentation::kFloat64); |
| 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::None(), |
| 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::None(), |
| MachineRepresentation::kTagged); |
| CheckTwoChanges(IrOpcode::kChangeTaggedToFloat64, |
| IrOpcode::kTruncateFloat64ToFloat32, |
| MachineRepresentation::kTagged, Type::None(), |
| 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::None(), MachineRepresentation::kFloat64); |
| CheckChange(IrOpcode::kChangeFloat64ToInt32, MachineRepresentation::kFloat64, |
| Type::Signed32(), MachineRepresentation::kWord32); |
| CheckChange(IrOpcode::kTruncateFloat64ToWord32, |
| MachineRepresentation::kFloat64, Type::Number(), |
| MachineRepresentation::kWord32); |
| |
| CheckTwoChanges(IrOpcode::kChangeInt32ToFloat64, |
| IrOpcode::kTruncateFloat64ToFloat32, |
| MachineRepresentation::kWord32, Type::None(), |
| MachineRepresentation::kFloat32); |
| CheckTwoChanges(IrOpcode::kChangeFloat32ToFloat64, |
| IrOpcode::kTruncateFloat64ToWord32, |
| MachineRepresentation::kFloat32, Type::Number(), |
| MachineRepresentation::kWord32); |
| } |
| |
| |
| 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::None(), |
| kMachineTypes[i].representation()); |
| } |
| |
| // 32-bit floats. |
| r.CheckNop(MachineRepresentation::kFloat32, Type::None(), |
| MachineRepresentation::kFloat32); |
| 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::None(), |
| MachineRepresentation::kWord8); |
| r.CheckNop(MachineRepresentation::kBit, Type::None(), |
| MachineRepresentation::kWord16); |
| r.CheckNop(MachineRepresentation::kBit, Type::None(), |
| MachineRepresentation::kWord32); |
| r.CheckNop(MachineRepresentation::kBit, Type::None(), |
| MachineRepresentation::kWord64); |
| r.CheckNop(MachineRepresentation::kBit, Type::Boolean(), |
| MachineRepresentation::kWord8); |
| r.CheckNop(MachineRepresentation::kBit, Type::Boolean(), |
| MachineRepresentation::kWord16); |
| r.CheckNop(MachineRepresentation::kBit, Type::Boolean(), |
| MachineRepresentation::kWord32); |
| r.CheckNop(MachineRepresentation::kBit, Type::Boolean(), |
| MachineRepresentation::kWord64); |
| } |
| |
| |
| TEST(TypeErrors) { |
| RepresentationChangerTester r; |
| |
| // Wordish cannot be implicitly converted to/from comparison conditions. |
| r.CheckTypeError(MachineRepresentation::kWord8, Type::None(), |
| MachineRepresentation::kBit); |
| r.CheckTypeError(MachineRepresentation::kWord16, Type::None(), |
| MachineRepresentation::kBit); |
| r.CheckTypeError(MachineRepresentation::kWord32, Type::None(), |
| MachineRepresentation::kBit); |
| r.CheckTypeError(MachineRepresentation::kWord64, Type::None(), |
| MachineRepresentation::kBit); |
| |
| // Floats cannot be implicitly converted to/from comparison conditions. |
| r.CheckTypeError(MachineRepresentation::kFloat64, Type::None(), |
| MachineRepresentation::kBit); |
| r.CheckTypeError(MachineRepresentation::kBit, Type::None(), |
| MachineRepresentation::kFloat64); |
| r.CheckTypeError(MachineRepresentation::kBit, Type::Boolean(), |
| MachineRepresentation::kFloat64); |
| |
| // Floats cannot be implicitly converted to/from comparison conditions. |
| r.CheckTypeError(MachineRepresentation::kFloat32, Type::None(), |
| MachineRepresentation::kBit); |
| r.CheckTypeError(MachineRepresentation::kBit, Type::None(), |
| MachineRepresentation::kFloat32); |
| r.CheckTypeError(MachineRepresentation::kBit, Type::Boolean(), |
| MachineRepresentation::kFloat32); |
| |
| // Word64 is internal and shouldn't be implicitly converted. |
| r.CheckTypeError(MachineRepresentation::kWord64, Type::None(), |
| MachineRepresentation::kTagged); |
| r.CheckTypeError(MachineRepresentation::kTagged, Type::None(), |
| MachineRepresentation::kWord64); |
| r.CheckTypeError(MachineRepresentation::kTagged, Type::Boolean(), |
| MachineRepresentation::kWord64); |
| |
| // Word64 / Word32 shouldn't be implicitly converted. |
| r.CheckTypeError(MachineRepresentation::kWord64, Type::None(), |
| MachineRepresentation::kWord32); |
| r.CheckTypeError(MachineRepresentation::kWord32, Type::None(), |
| MachineRepresentation::kWord64); |
| r.CheckTypeError(MachineRepresentation::kWord32, Type::Signed32(), |
| MachineRepresentation::kWord64); |
| r.CheckTypeError(MachineRepresentation::kWord32, Type::Unsigned32(), |
| MachineRepresentation::kWord64); |
| } |
| |
| } // namespace compiler |
| } // namespace internal |
| } // namespace v8 |