[turbofan] Fix RedundancyElimination and add more test coverage.

Make the RedundancyElimination handle all simplified operators that are
listed in the SIMPLIFIED_CHECKED_OP_LIST, and fix a couple of bugs and
oversights in the code. This also adds a lot of test coverage for all
the cases that we care about in RedundancyElimination (with respect to
Check/Checked simplified operators).

Bug: v8:8015
Change-Id: I57d29113389841b09abcd013313bf5dd1c67735f
Reviewed-on: https://chromium-review.googlesource.com/1233655
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56032}
This commit is contained in:
Benedikt Meurer 2018-09-19 14:24:12 +02:00 committed by Commit Bot
parent 196874aa08
commit 4491072507
6 changed files with 675 additions and 20 deletions

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@ -32,23 +32,9 @@ Reduction RedundancyElimination::Reduce(Node* node) {
case IrOpcode::kCheckSmi:
case IrOpcode::kCheckString:
case IrOpcode::kCheckSymbol:
case IrOpcode::kCheckedFloat64ToInt32:
case IrOpcode::kCheckedInt32Add:
case IrOpcode::kCheckedInt32Div:
case IrOpcode::kCheckedInt32Mod:
case IrOpcode::kCheckedInt32Mul:
case IrOpcode::kCheckedInt32Sub:
case IrOpcode::kCheckedInt32ToTaggedSigned:
case IrOpcode::kCheckedTaggedSignedToInt32:
case IrOpcode::kCheckedTaggedToFloat64:
case IrOpcode::kCheckedTaggedToInt32:
case IrOpcode::kCheckedTaggedToTaggedPointer:
case IrOpcode::kCheckedTaggedToTaggedSigned:
case IrOpcode::kCheckedTruncateTaggedToWord32:
case IrOpcode::kCheckedUint32Div:
case IrOpcode::kCheckedUint32Mod:
case IrOpcode::kCheckedUint32ToInt32:
case IrOpcode::kCheckedUint32ToTaggedSigned:
#define SIMPLIFIED_CHECKED_OP(Opcode) case IrOpcode::k##Opcode:
SIMPLIFIED_CHECKED_OP_LIST(SIMPLIFIED_CHECKED_OP)
#undef SIMPLIFIED_CHECKED_OP
return ReduceCheckNode(node);
case IrOpcode::kSpeculativeNumberAdd:
case IrOpcode::kSpeculativeNumberSubtract:
@ -140,6 +126,12 @@ bool CheckSubsumes(Node const* a, Node const* b) {
if (a->opcode() == IrOpcode::kCheckInternalizedString &&
b->opcode() == IrOpcode::kCheckString) {
// CheckInternalizedString(node) implies CheckString(node)
} else if (a->opcode() == IrOpcode::kCheckSmi &&
b->opcode() == IrOpcode::kCheckNumber) {
// CheckSmi(node) implies CheckNumber(node)
} else if (a->opcode() == IrOpcode::kCheckedTaggedSignedToInt32 &&
b->opcode() == IrOpcode::kCheckedTaggedToInt32) {
// CheckedTaggedSignedToInt32(node) implies CheckedTaggedToInt32(node)
} else if (a->opcode() != b->opcode()) {
return false;
} else {
@ -150,11 +142,15 @@ bool CheckSubsumes(Node const* a, Node const* b) {
case IrOpcode::kCheckNumber:
break;
case IrOpcode::kCheckedInt32ToTaggedSigned:
case IrOpcode::kCheckedInt64ToInt32:
case IrOpcode::kCheckedInt64ToTaggedSigned:
case IrOpcode::kCheckedTaggedSignedToInt32:
case IrOpcode::kCheckedTaggedToTaggedPointer:
case IrOpcode::kCheckedTaggedToTaggedSigned:
case IrOpcode::kCheckedUint32ToInt32:
case IrOpcode::kCheckedUint32ToTaggedSigned:
case IrOpcode::kCheckedUint64ToInt32:
case IrOpcode::kCheckedUint64ToTaggedSigned:
break;
case IrOpcode::kCheckedFloat64ToInt32:
case IrOpcode::kCheckedTaggedToInt32: {
@ -167,6 +163,20 @@ bool CheckSubsumes(Node const* a, Node const* b) {
}
break;
}
case IrOpcode::kCheckedTaggedToFloat64:
case IrOpcode::kCheckedTruncateTaggedToWord32: {
CheckTaggedInputParameters const& ap =
CheckTaggedInputParametersOf(a->op());
CheckTaggedInputParameters const& bp =
CheckTaggedInputParametersOf(b->op());
// {a} subsumes {b} if the modes are either the same, or {a} checks
// for Number, in which case {b} will be subsumed no matter what.
if (ap.mode() != bp.mode() &&
ap.mode() != CheckTaggedInputMode::kNumber) {
return false;
}
break;
}
default:
DCHECK(!IsCheckedWithFeedback(a->op()));
return false;

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@ -11,7 +11,7 @@ namespace v8 {
namespace internal {
namespace compiler {
class RedundancyElimination final : public AdvancedReducer {
class V8_EXPORT_PRIVATE RedundancyElimination final : public AdvancedReducer {
public:
RedundancyElimination(Editor* editor, Zone* zone);
~RedundancyElimination() final;

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@ -228,7 +228,7 @@ enum class CheckTaggedInputMode : uint8_t {
size_t hash_value(CheckTaggedInputMode);
std::ostream& operator<<(std::ostream&, CheckTaggedInputMode);
V8_EXPORT_PRIVATE std::ostream& operator<<(std::ostream&, CheckTaggedInputMode);
class CheckTaggedInputParameters {
public:

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@ -40,7 +40,8 @@ class V8_EXPORT_PRIVATE VectorSlotPair {
bool operator==(VectorSlotPair const&, VectorSlotPair const&);
bool operator!=(VectorSlotPair const&, VectorSlotPair const&);
std::ostream& operator<<(std::ostream& os, VectorSlotPair const&);
V8_EXPORT_PRIVATE std::ostream& operator<<(std::ostream& os,
VectorSlotPair const&);
size_t hash_value(VectorSlotPair const&);

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@ -131,6 +131,7 @@ v8_source_set("unittests_sources") {
"compiler/node-unittest.cc",
"compiler/opcodes-unittest.cc",
"compiler/persistent-unittest.cc",
"compiler/redundancy-elimination-unittest.cc",
"compiler/regalloc/live-range-unittest.cc",
"compiler/regalloc/move-optimizer-unittest.cc",
"compiler/regalloc/register-allocator-unittest.cc",

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@ -0,0 +1,643 @@
// Copyright 2018 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 "src/compiler/redundancy-elimination.h"
#include "src/compiler/common-operator.h"
#include "test/unittests/compiler/graph-reducer-unittest.h"
#include "test/unittests/compiler/graph-unittest.h"
#include "test/unittests/compiler/node-test-utils.h"
#include "testing/gmock-support.h"
using testing::NiceMock;
namespace v8 {
namespace internal {
namespace compiler {
namespace redundancy_elimination_unittest {
class RedundancyEliminationTest : public GraphTest {
public:
explicit RedundancyEliminationTest(int num_parameters = 4)
: GraphTest(num_parameters),
reducer_(&editor_, zone()),
simplified_(zone()) {
// Initialize the {reducer_} state for the Start node.
reducer_.Reduce(graph()->start());
// Create a feedback vector with two CALL_IC slots.
FeedbackVectorSpec spec(zone());
FeedbackSlot slot1 = spec.AddCallICSlot();
FeedbackSlot slot2 = spec.AddCallICSlot();
Handle<FeedbackMetadata> metadata = FeedbackMetadata::New(isolate(), &spec);
Handle<SharedFunctionInfo> shared =
isolate()->factory()->NewSharedFunctionInfoForBuiltin(
isolate()->factory()->empty_string(), Builtins::kIllegal);
shared->set_raw_outer_scope_info_or_feedback_metadata(*metadata);
Handle<FeedbackVector> feedback_vector =
FeedbackVector::New(isolate(), shared);
vector_slot_pairs_.push_back(VectorSlotPair());
vector_slot_pairs_.push_back(
VectorSlotPair(feedback_vector, slot1, UNINITIALIZED));
vector_slot_pairs_.push_back(
VectorSlotPair(feedback_vector, slot2, UNINITIALIZED));
}
~RedundancyEliminationTest() override = default;
protected:
Reduction Reduce(Node* node) { return reducer_.Reduce(node); }
std::vector<VectorSlotPair> const& vector_slot_pairs() const {
return vector_slot_pairs_;
}
SimplifiedOperatorBuilder* simplified() { return &simplified_; }
private:
NiceMock<MockAdvancedReducerEditor> editor_;
std::vector<VectorSlotPair> vector_slot_pairs_;
VectorSlotPair feedback2_;
RedundancyElimination reducer_;
SimplifiedOperatorBuilder simplified_;
};
namespace {
const CheckForMinusZeroMode kCheckForMinusZeroModes[] = {
CheckForMinusZeroMode::kCheckForMinusZero,
CheckForMinusZeroMode::kDontCheckForMinusZero,
};
const CheckTaggedInputMode kCheckTaggedInputModes[] = {
CheckTaggedInputMode::kNumber, CheckTaggedInputMode::kNumberOrOddball};
} // namespace
// -----------------------------------------------------------------------------
// CheckBounds
TEST_F(RedundancyEliminationTest, CheckBounds) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
Node* index = Parameter(0);
Node* length = Parameter(1);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect = graph()->NewNode(
simplified()->CheckBounds(feedback1), index, length, effect, control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect = graph()->NewNode(
simplified()->CheckBounds(feedback2), index, length, effect, control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
// -----------------------------------------------------------------------------
// CheckNumber
TEST_F(RedundancyEliminationTest, CheckNumberSubsumedByCheckSmi) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect = graph()->NewNode(
simplified()->CheckSmi(feedback1), value, effect, control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect = graph()->NewNode(
simplified()->CheckNumber(feedback2), value, effect, control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
// -----------------------------------------------------------------------------
// CheckString
TEST_F(RedundancyEliminationTest,
CheckStringSubsumedByCheckInternalizedString) {
TRACED_FOREACH(VectorSlotPair, feedback, vector_slot_pairs()) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect = graph()->NewNode(
simplified()->CheckInternalizedString(), value, effect, control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect = graph()->NewNode(
simplified()->CheckString(feedback), value, effect, control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
// -----------------------------------------------------------------------------
// CheckSymbol
TEST_F(RedundancyEliminationTest, CheckSymbol) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect =
graph()->NewNode(simplified()->CheckSymbol(), value, effect, control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect =
graph()->NewNode(simplified()->CheckSymbol(), value, effect, control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
// -----------------------------------------------------------------------------
// CheckedFloat64ToInt32
TEST_F(RedundancyEliminationTest, CheckedFloat64ToInt32) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
TRACED_FOREACH(CheckForMinusZeroMode, mode, kCheckForMinusZeroModes) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect = graph()->NewNode(
simplified()->CheckedFloat64ToInt32(mode, feedback1), value, effect,
control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect = graph()->NewNode(
simplified()->CheckedFloat64ToInt32(mode, feedback2), value, effect,
control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
}
// -----------------------------------------------------------------------------
// CheckedInt32ToTaggedSigned
TEST_F(RedundancyEliminationTest, CheckedInt32ToTaggedSigned) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect =
graph()->NewNode(simplified()->CheckedInt32ToTaggedSigned(feedback1),
value, effect, control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect =
graph()->NewNode(simplified()->CheckedInt32ToTaggedSigned(feedback2),
value, effect, control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
// -----------------------------------------------------------------------------
// CheckedInt64ToInt32
TEST_F(RedundancyEliminationTest, CheckedInt64ToInt32) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect = graph()->NewNode(
simplified()->CheckedInt64ToInt32(feedback1), value, effect, control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect = graph()->NewNode(
simplified()->CheckedInt64ToInt32(feedback2), value, effect, control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
// -----------------------------------------------------------------------------
// CheckedInt64ToTaggedSigned
TEST_F(RedundancyEliminationTest, CheckedInt64ToTaggedSigned) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect =
graph()->NewNode(simplified()->CheckedInt64ToTaggedSigned(feedback1),
value, effect, control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect =
graph()->NewNode(simplified()->CheckedInt64ToTaggedSigned(feedback2),
value, effect, control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
// -----------------------------------------------------------------------------
// CheckedTaggedSignedToInt32
TEST_F(RedundancyEliminationTest, CheckedTaggedSignedToInt32) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect =
graph()->NewNode(simplified()->CheckedTaggedSignedToInt32(feedback1),
value, effect, control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect =
graph()->NewNode(simplified()->CheckedTaggedSignedToInt32(feedback2),
value, effect, control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
// -----------------------------------------------------------------------------
// CheckedTaggedToFloat64
TEST_F(RedundancyEliminationTest, CheckedTaggedToFloat64) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
TRACED_FOREACH(CheckTaggedInputMode, mode, kCheckTaggedInputModes) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect = graph()->NewNode(
simplified()->CheckedTaggedToFloat64(mode, feedback1), value,
effect, control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect = graph()->NewNode(
simplified()->CheckedTaggedToFloat64(mode, feedback2), value,
effect, control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
}
TEST_F(RedundancyEliminationTest,
CheckedTaggedToFloat64SubsubmedByCheckedTaggedToFloat64) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
// If the check passed for CheckTaggedInputMode::kNumber, it'll
// also pass later for CheckTaggedInputMode::kNumberOrOddball.
Node* check1 = effect =
graph()->NewNode(simplified()->CheckedTaggedToFloat64(
CheckTaggedInputMode::kNumber, feedback1),
value, effect, control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect = graph()->NewNode(
simplified()->CheckedTaggedToFloat64(
CheckTaggedInputMode::kNumberOrOddball, feedback2),
value, effect, control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
// -----------------------------------------------------------------------------
// CheckedTaggedToInt32
TEST_F(RedundancyEliminationTest, CheckedTaggedToInt32) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
TRACED_FOREACH(CheckForMinusZeroMode, mode, kCheckForMinusZeroModes) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect = graph()->NewNode(
simplified()->CheckedTaggedToInt32(mode, feedback1), value, effect,
control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect = graph()->NewNode(
simplified()->CheckedTaggedToInt32(mode, feedback2), value, effect,
control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
}
TEST_F(RedundancyEliminationTest,
CheckedTaggedToInt32SubsumedByCheckedTaggedSignedToInt32) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
TRACED_FOREACH(CheckForMinusZeroMode, mode, kCheckForMinusZeroModes) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect = graph()->NewNode(
simplified()->CheckedTaggedSignedToInt32(feedback1), value, effect,
control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect = graph()->NewNode(
simplified()->CheckedTaggedToInt32(mode, feedback2), value, effect,
control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
}
// -----------------------------------------------------------------------------
// CheckedTaggedToTaggedPointer
TEST_F(RedundancyEliminationTest, CheckedTaggedToTaggedPointer) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect = graph()->NewNode(
simplified()->CheckedTaggedToTaggedPointer(feedback1), value, effect,
control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect = graph()->NewNode(
simplified()->CheckedTaggedToTaggedPointer(feedback2), value, effect,
control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
// -----------------------------------------------------------------------------
// CheckedTaggedToTaggedSigned
TEST_F(RedundancyEliminationTest, CheckedTaggedToTaggedSigned) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect =
graph()->NewNode(simplified()->CheckedTaggedToTaggedSigned(feedback1),
value, effect, control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect =
graph()->NewNode(simplified()->CheckedTaggedToTaggedSigned(feedback2),
value, effect, control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
// -----------------------------------------------------------------------------
// CheckedTruncateTaggedToWord32
TEST_F(RedundancyEliminationTest, CheckedTruncateTaggedToWord32) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
TRACED_FOREACH(CheckTaggedInputMode, mode, kCheckTaggedInputModes) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect = graph()->NewNode(
simplified()->CheckedTruncateTaggedToWord32(mode, feedback1), value,
effect, control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect = graph()->NewNode(
simplified()->CheckedTruncateTaggedToWord32(mode, feedback2), value,
effect, control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
}
TEST_F(RedundancyEliminationTest,
CheckedTruncateTaggedToWord32SubsumedByCheckedTruncateTaggedToWord32) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
// If the check passed for CheckTaggedInputMode::kNumber, it'll
// also pass later for CheckTaggedInputMode::kNumberOrOddball.
Node* check1 = effect =
graph()->NewNode(simplified()->CheckedTruncateTaggedToWord32(
CheckTaggedInputMode::kNumber, feedback1),
value, effect, control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect = graph()->NewNode(
simplified()->CheckedTruncateTaggedToWord32(
CheckTaggedInputMode::kNumberOrOddball, feedback2),
value, effect, control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
// -----------------------------------------------------------------------------
// CheckedUint32ToInt32
TEST_F(RedundancyEliminationTest, CheckedUint32ToInt32) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect =
graph()->NewNode(simplified()->CheckedUint32ToInt32(feedback1), value,
effect, control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect =
graph()->NewNode(simplified()->CheckedUint32ToInt32(feedback2), value,
effect, control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
// -----------------------------------------------------------------------------
// CheckedUint32ToTaggedSigned
TEST_F(RedundancyEliminationTest, CheckedUint32ToTaggedSigned) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect =
graph()->NewNode(simplified()->CheckedUint32ToTaggedSigned(feedback1),
value, effect, control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect =
graph()->NewNode(simplified()->CheckedUint32ToTaggedSigned(feedback2),
value, effect, control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
// -----------------------------------------------------------------------------
// CheckedUint64ToInt32
TEST_F(RedundancyEliminationTest, CheckedUint64ToInt32) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect =
graph()->NewNode(simplified()->CheckedUint64ToInt32(feedback1), value,
effect, control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect =
graph()->NewNode(simplified()->CheckedUint64ToInt32(feedback2), value,
effect, control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
// -----------------------------------------------------------------------------
// CheckedUint64ToTaggedSigned
TEST_F(RedundancyEliminationTest, CheckedUint64ToTaggedSigned) {
TRACED_FOREACH(VectorSlotPair, feedback1, vector_slot_pairs()) {
TRACED_FOREACH(VectorSlotPair, feedback2, vector_slot_pairs()) {
Node* value = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* check1 = effect =
graph()->NewNode(simplified()->CheckedUint64ToTaggedSigned(feedback1),
value, effect, control);
Reduction r1 = Reduce(check1);
ASSERT_TRUE(r1.Changed());
EXPECT_EQ(r1.replacement(), check1);
Node* check2 = effect =
graph()->NewNode(simplified()->CheckedUint64ToTaggedSigned(feedback2),
value, effect, control);
Reduction r2 = Reduce(check2);
ASSERT_TRUE(r2.Changed());
EXPECT_EQ(r2.replacement(), check1);
}
}
}
} // namespace redundancy_elimination_unittest
} // namespace compiler
} // namespace internal
} // namespace v8