bfd37ab267
As per discussion on the V8 team, this is the place we want them to live, not following the Chrome Style Guide for this. BUG=v8:3489 LOG=y R=svenpanne@chromium.org Review URL: https://codereview.chromium.org/615393002 git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24350 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
519 lines
18 KiB
C++
519 lines
18 KiB
C++
// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "test/unittests/compiler/instruction-selector-unittest.h"
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#include "src/flags.h"
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#include "test/unittests/compiler/compiler-test-utils.h"
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namespace v8 {
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namespace internal {
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namespace compiler {
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namespace {
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typedef RawMachineAssembler::Label MLabel;
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} // namespace
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InstructionSelectorTest::InstructionSelectorTest() : rng_(FLAG_random_seed) {}
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InstructionSelectorTest::~InstructionSelectorTest() {}
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InstructionSelectorTest::Stream InstructionSelectorTest::StreamBuilder::Build(
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InstructionSelector::Features features,
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InstructionSelectorTest::StreamBuilderMode mode) {
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Schedule* schedule = Export();
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if (FLAG_trace_turbo) {
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OFStream out(stdout);
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out << "=== Schedule before instruction selection ===" << std::endl
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<< *schedule;
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}
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EXPECT_NE(0, graph()->NodeCount());
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CompilationInfo info(test_->isolate(), test_->zone());
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Linkage linkage(&info, call_descriptor());
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InstructionSequence sequence(&linkage, graph(), schedule);
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SourcePositionTable source_position_table(graph());
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InstructionSelector selector(&sequence, &source_position_table, features);
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selector.SelectInstructions();
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if (FLAG_trace_turbo) {
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OFStream out(stdout);
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out << "=== Code sequence after instruction selection ===" << std::endl
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<< sequence;
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}
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Stream s;
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std::set<int> virtual_registers;
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for (InstructionSequence::const_iterator i = sequence.begin();
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i != sequence.end(); ++i) {
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Instruction* instr = *i;
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if (instr->opcode() < 0) continue;
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if (mode == kTargetInstructions) {
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switch (instr->arch_opcode()) {
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#define CASE(Name) \
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case k##Name: \
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break;
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TARGET_ARCH_OPCODE_LIST(CASE)
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#undef CASE
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default:
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continue;
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}
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}
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if (mode == kAllExceptNopInstructions && instr->arch_opcode() == kArchNop) {
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continue;
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}
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for (size_t i = 0; i < instr->OutputCount(); ++i) {
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InstructionOperand* output = instr->OutputAt(i);
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EXPECT_NE(InstructionOperand::IMMEDIATE, output->kind());
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if (output->IsConstant()) {
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s.constants_.insert(std::make_pair(
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output->index(), sequence.GetConstant(output->index())));
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virtual_registers.insert(output->index());
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} else if (output->IsUnallocated()) {
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virtual_registers.insert(
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UnallocatedOperand::cast(output)->virtual_register());
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}
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}
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for (size_t i = 0; i < instr->InputCount(); ++i) {
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InstructionOperand* input = instr->InputAt(i);
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EXPECT_NE(InstructionOperand::CONSTANT, input->kind());
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if (input->IsImmediate()) {
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s.immediates_.insert(std::make_pair(
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input->index(), sequence.GetImmediate(input->index())));
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} else if (input->IsUnallocated()) {
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virtual_registers.insert(
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UnallocatedOperand::cast(input)->virtual_register());
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}
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}
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s.instructions_.push_back(instr);
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}
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for (std::set<int>::const_iterator i = virtual_registers.begin();
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i != virtual_registers.end(); ++i) {
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int virtual_register = *i;
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if (sequence.IsDouble(virtual_register)) {
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EXPECT_FALSE(sequence.IsReference(virtual_register));
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s.doubles_.insert(virtual_register);
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}
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if (sequence.IsReference(virtual_register)) {
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EXPECT_FALSE(sequence.IsDouble(virtual_register));
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s.references_.insert(virtual_register);
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}
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}
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for (int i = 0; i < sequence.GetFrameStateDescriptorCount(); i++) {
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s.deoptimization_entries_.push_back(sequence.GetFrameStateDescriptor(
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InstructionSequence::StateId::FromInt(i)));
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}
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return s;
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}
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// -----------------------------------------------------------------------------
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// Return.
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TARGET_TEST_F(InstructionSelectorTest, ReturnFloat32Constant) {
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const float kValue = 4.2f;
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StreamBuilder m(this, kMachFloat32);
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m.Return(m.Float32Constant(kValue));
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Stream s = m.Build(kAllInstructions);
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ASSERT_EQ(2U, s.size());
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EXPECT_EQ(kArchNop, s[0]->arch_opcode());
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ASSERT_EQ(InstructionOperand::CONSTANT, s[0]->OutputAt(0)->kind());
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EXPECT_FLOAT_EQ(kValue, s.ToFloat32(s[0]->OutputAt(0)));
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EXPECT_EQ(kArchRet, s[1]->arch_opcode());
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EXPECT_EQ(1U, s[1]->InputCount());
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}
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TARGET_TEST_F(InstructionSelectorTest, ReturnParameter) {
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StreamBuilder m(this, kMachInt32, kMachInt32);
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m.Return(m.Parameter(0));
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Stream s = m.Build(kAllInstructions);
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ASSERT_EQ(2U, s.size());
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EXPECT_EQ(kArchNop, s[0]->arch_opcode());
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ASSERT_EQ(1U, s[0]->OutputCount());
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EXPECT_EQ(kArchRet, s[1]->arch_opcode());
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EXPECT_EQ(1U, s[1]->InputCount());
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}
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TARGET_TEST_F(InstructionSelectorTest, ReturnZero) {
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StreamBuilder m(this, kMachInt32);
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m.Return(m.Int32Constant(0));
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Stream s = m.Build(kAllInstructions);
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ASSERT_EQ(2U, s.size());
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EXPECT_EQ(kArchNop, s[0]->arch_opcode());
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ASSERT_EQ(1U, s[0]->OutputCount());
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EXPECT_EQ(InstructionOperand::CONSTANT, s[0]->OutputAt(0)->kind());
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EXPECT_EQ(0, s.ToInt32(s[0]->OutputAt(0)));
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EXPECT_EQ(kArchRet, s[1]->arch_opcode());
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EXPECT_EQ(1U, s[1]->InputCount());
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}
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// -----------------------------------------------------------------------------
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// Conversions.
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TARGET_TEST_F(InstructionSelectorTest, TruncateFloat64ToInt32WithParameter) {
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StreamBuilder m(this, kMachInt32, kMachFloat64);
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m.Return(m.TruncateFloat64ToInt32(m.Parameter(0)));
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Stream s = m.Build(kAllInstructions);
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ASSERT_EQ(3U, s.size());
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EXPECT_EQ(kArchNop, s[0]->arch_opcode());
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EXPECT_EQ(kArchTruncateDoubleToI, s[1]->arch_opcode());
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EXPECT_EQ(1U, s[1]->InputCount());
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EXPECT_EQ(1U, s[1]->OutputCount());
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EXPECT_EQ(kArchRet, s[2]->arch_opcode());
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}
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// -----------------------------------------------------------------------------
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// Parameters.
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TARGET_TEST_F(InstructionSelectorTest, DoubleParameter) {
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StreamBuilder m(this, kMachFloat64, kMachFloat64);
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Node* param = m.Parameter(0);
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m.Return(param);
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Stream s = m.Build(kAllInstructions);
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EXPECT_TRUE(s.IsDouble(param->id()));
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}
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TARGET_TEST_F(InstructionSelectorTest, ReferenceParameter) {
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StreamBuilder m(this, kMachAnyTagged, kMachAnyTagged);
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Node* param = m.Parameter(0);
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m.Return(param);
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Stream s = m.Build(kAllInstructions);
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EXPECT_TRUE(s.IsReference(param->id()));
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}
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// -----------------------------------------------------------------------------
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// Finish.
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TARGET_TEST_F(InstructionSelectorTest, Finish) {
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StreamBuilder m(this, kMachAnyTagged, kMachAnyTagged);
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Node* param = m.Parameter(0);
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Node* finish = m.NewNode(m.common()->Finish(1), param, m.graph()->start());
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m.Return(finish);
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Stream s = m.Build(kAllInstructions);
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ASSERT_EQ(3U, s.size());
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EXPECT_EQ(kArchNop, s[0]->arch_opcode());
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ASSERT_EQ(1U, s[0]->OutputCount());
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ASSERT_TRUE(s[0]->Output()->IsUnallocated());
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EXPECT_EQ(param->id(), s.ToVreg(s[0]->Output()));
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EXPECT_EQ(kArchNop, s[1]->arch_opcode());
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ASSERT_EQ(1U, s[1]->InputCount());
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ASSERT_TRUE(s[1]->InputAt(0)->IsUnallocated());
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EXPECT_EQ(param->id(), s.ToVreg(s[1]->InputAt(0)));
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ASSERT_EQ(1U, s[1]->OutputCount());
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ASSERT_TRUE(s[1]->Output()->IsUnallocated());
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EXPECT_TRUE(UnallocatedOperand::cast(s[1]->Output())->HasSameAsInputPolicy());
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EXPECT_EQ(finish->id(), s.ToVreg(s[1]->Output()));
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EXPECT_TRUE(s.IsReference(finish->id()));
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}
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// -----------------------------------------------------------------------------
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// Phi.
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typedef InstructionSelectorTestWithParam<MachineType>
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InstructionSelectorPhiTest;
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TARGET_TEST_P(InstructionSelectorPhiTest, Doubleness) {
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const MachineType type = GetParam();
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StreamBuilder m(this, type, type, type);
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Node* param0 = m.Parameter(0);
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Node* param1 = m.Parameter(1);
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MLabel a, b, c;
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m.Branch(m.Int32Constant(0), &a, &b);
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m.Bind(&a);
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m.Goto(&c);
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m.Bind(&b);
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m.Goto(&c);
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m.Bind(&c);
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Node* phi = m.Phi(type, param0, param1);
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m.Return(phi);
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Stream s = m.Build(kAllInstructions);
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EXPECT_EQ(s.IsDouble(phi->id()), s.IsDouble(param0->id()));
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EXPECT_EQ(s.IsDouble(phi->id()), s.IsDouble(param1->id()));
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}
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TARGET_TEST_P(InstructionSelectorPhiTest, Referenceness) {
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const MachineType type = GetParam();
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StreamBuilder m(this, type, type, type);
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Node* param0 = m.Parameter(0);
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Node* param1 = m.Parameter(1);
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MLabel a, b, c;
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m.Branch(m.Int32Constant(1), &a, &b);
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m.Bind(&a);
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m.Goto(&c);
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m.Bind(&b);
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m.Goto(&c);
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m.Bind(&c);
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Node* phi = m.Phi(type, param0, param1);
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m.Return(phi);
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Stream s = m.Build(kAllInstructions);
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EXPECT_EQ(s.IsReference(phi->id()), s.IsReference(param0->id()));
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EXPECT_EQ(s.IsReference(phi->id()), s.IsReference(param1->id()));
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}
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INSTANTIATE_TEST_CASE_P(InstructionSelectorTest, InstructionSelectorPhiTest,
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::testing::Values(kMachFloat64, kMachInt8, kMachUint8,
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kMachInt16, kMachUint16, kMachInt32,
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kMachUint32, kMachInt64, kMachUint64,
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kMachPtr, kMachAnyTagged));
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// -----------------------------------------------------------------------------
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// ValueEffect.
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TARGET_TEST_F(InstructionSelectorTest, ValueEffect) {
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StreamBuilder m1(this, kMachInt32, kMachPtr);
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Node* p1 = m1.Parameter(0);
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m1.Return(m1.Load(kMachInt32, p1, m1.Int32Constant(0)));
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Stream s1 = m1.Build(kAllInstructions);
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StreamBuilder m2(this, kMachInt32, kMachPtr);
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Node* p2 = m2.Parameter(0);
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m2.Return(m2.NewNode(m2.machine()->Load(kMachInt32), p2, m2.Int32Constant(0),
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m2.NewNode(m2.common()->ValueEffect(1), p2)));
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Stream s2 = m2.Build(kAllInstructions);
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EXPECT_LE(3U, s1.size());
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ASSERT_EQ(s1.size(), s2.size());
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TRACED_FORRANGE(size_t, i, 0, s1.size() - 1) {
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const Instruction* i1 = s1[i];
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const Instruction* i2 = s2[i];
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EXPECT_EQ(i1->arch_opcode(), i2->arch_opcode());
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EXPECT_EQ(i1->InputCount(), i2->InputCount());
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EXPECT_EQ(i1->OutputCount(), i2->OutputCount());
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}
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}
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// -----------------------------------------------------------------------------
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// Calls with deoptimization.
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TARGET_TEST_F(InstructionSelectorTest, CallJSFunctionWithDeopt) {
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StreamBuilder m(this, kMachAnyTagged, kMachAnyTagged, kMachAnyTagged,
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kMachAnyTagged);
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BailoutId bailout_id(42);
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Node* function_node = m.Parameter(0);
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Node* receiver = m.Parameter(1);
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Node* context = m.Parameter(2);
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Node* parameters = m.NewNode(m.common()->StateValues(1), m.Int32Constant(1));
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Node* locals = m.NewNode(m.common()->StateValues(0));
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Node* stack = m.NewNode(m.common()->StateValues(0));
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Node* context_dummy = m.Int32Constant(0);
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Node* state_node = m.NewNode(
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m.common()->FrameState(JS_FRAME, bailout_id,
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OutputFrameStateCombine::Push()),
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parameters, locals, stack, context_dummy, m.UndefinedConstant());
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Node* call = m.CallJS0(function_node, receiver, context, state_node);
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m.Return(call);
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Stream s = m.Build(kAllExceptNopInstructions);
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// Skip until kArchCallJSFunction.
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size_t index = 0;
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for (; index < s.size() && s[index]->arch_opcode() != kArchCallJSFunction;
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index++) {
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}
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// Now we should have two instructions: call and return.
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ASSERT_EQ(index + 2, s.size());
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EXPECT_EQ(kArchCallJSFunction, s[index++]->arch_opcode());
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EXPECT_EQ(kArchRet, s[index++]->arch_opcode());
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// TODO(jarin) Check deoptimization table.
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}
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TARGET_TEST_F(InstructionSelectorTest, CallFunctionStubWithDeopt) {
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StreamBuilder m(this, kMachAnyTagged, kMachAnyTagged, kMachAnyTagged,
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kMachAnyTagged);
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BailoutId bailout_id_before(42);
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// Some arguments for the call node.
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Node* function_node = m.Parameter(0);
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Node* receiver = m.Parameter(1);
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Node* context = m.Int32Constant(1); // Context is ignored.
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// Build frame state for the state before the call.
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Node* parameters = m.NewNode(m.common()->StateValues(1), m.Int32Constant(43));
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Node* locals = m.NewNode(m.common()->StateValues(1), m.Int32Constant(44));
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Node* stack = m.NewNode(m.common()->StateValues(1), m.Int32Constant(45));
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Node* context_sentinel = m.Int32Constant(0);
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Node* frame_state_before = m.NewNode(
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m.common()->FrameState(JS_FRAME, bailout_id_before,
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OutputFrameStateCombine::Push()),
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parameters, locals, stack, context_sentinel, m.UndefinedConstant());
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// Build the call.
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Node* call = m.CallFunctionStub0(function_node, receiver, context,
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frame_state_before, CALL_AS_METHOD);
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m.Return(call);
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Stream s = m.Build(kAllExceptNopInstructions);
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// Skip until kArchCallJSFunction.
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size_t index = 0;
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for (; index < s.size() && s[index]->arch_opcode() != kArchCallCodeObject;
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index++) {
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}
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// Now we should have two instructions: call, return.
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ASSERT_EQ(index + 2, s.size());
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// Check the call instruction
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const Instruction* call_instr = s[index++];
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EXPECT_EQ(kArchCallCodeObject, call_instr->arch_opcode());
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size_t num_operands =
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1 + // Code object.
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1 +
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4 + // Frame state deopt id + one input for each value in frame state.
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1 + // Function.
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1; // Context.
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ASSERT_EQ(num_operands, call_instr->InputCount());
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// Code object.
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EXPECT_TRUE(call_instr->InputAt(0)->IsImmediate());
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// Deoptimization id.
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int32_t deopt_id_before = s.ToInt32(call_instr->InputAt(1));
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FrameStateDescriptor* desc_before =
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s.GetFrameStateDescriptor(deopt_id_before);
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EXPECT_EQ(bailout_id_before, desc_before->bailout_id());
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EXPECT_EQ(OutputFrameStateCombine::kPushOutput,
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desc_before->state_combine().kind());
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EXPECT_EQ(1u, desc_before->parameters_count());
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EXPECT_EQ(1u, desc_before->locals_count());
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EXPECT_EQ(1u, desc_before->stack_count());
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EXPECT_EQ(43, s.ToInt32(call_instr->InputAt(2)));
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EXPECT_EQ(0, s.ToInt32(call_instr->InputAt(3)));
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EXPECT_EQ(44, s.ToInt32(call_instr->InputAt(4)));
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EXPECT_EQ(45, s.ToInt32(call_instr->InputAt(5)));
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// Function.
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EXPECT_EQ(function_node->id(), s.ToVreg(call_instr->InputAt(6)));
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// Context.
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EXPECT_EQ(context->id(), s.ToVreg(call_instr->InputAt(7)));
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EXPECT_EQ(kArchRet, s[index++]->arch_opcode());
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EXPECT_EQ(index, s.size());
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}
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TARGET_TEST_F(InstructionSelectorTest,
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CallFunctionStubDeoptRecursiveFrameState) {
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StreamBuilder m(this, kMachAnyTagged, kMachAnyTagged, kMachAnyTagged,
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kMachAnyTagged);
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BailoutId bailout_id_before(42);
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BailoutId bailout_id_parent(62);
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// Some arguments for the call node.
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Node* function_node = m.Parameter(0);
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Node* receiver = m.Parameter(1);
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Node* context = m.Int32Constant(66);
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// Build frame state for the state before the call.
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Node* parameters = m.NewNode(m.common()->StateValues(1), m.Int32Constant(63));
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Node* locals = m.NewNode(m.common()->StateValues(1), m.Int32Constant(64));
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Node* stack = m.NewNode(m.common()->StateValues(1), m.Int32Constant(65));
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Node* frame_state_parent =
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m.NewNode(m.common()->FrameState(JS_FRAME, bailout_id_parent,
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OutputFrameStateCombine::Ignore()),
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parameters, locals, stack, context, m.UndefinedConstant());
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Node* context2 = m.Int32Constant(46);
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Node* parameters2 =
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m.NewNode(m.common()->StateValues(1), m.Int32Constant(43));
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Node* locals2 = m.NewNode(m.common()->StateValues(1), m.Int32Constant(44));
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Node* stack2 = m.NewNode(m.common()->StateValues(1), m.Int32Constant(45));
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Node* frame_state_before =
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m.NewNode(m.common()->FrameState(JS_FRAME, bailout_id_before,
|
|
OutputFrameStateCombine::Push()),
|
|
parameters2, locals2, stack2, context2, frame_state_parent);
|
|
|
|
// Build the call.
|
|
Node* call = m.CallFunctionStub0(function_node, receiver, context2,
|
|
frame_state_before, CALL_AS_METHOD);
|
|
|
|
m.Return(call);
|
|
|
|
Stream s = m.Build(kAllExceptNopInstructions);
|
|
|
|
// Skip until kArchCallJSFunction.
|
|
size_t index = 0;
|
|
for (; index < s.size() && s[index]->arch_opcode() != kArchCallCodeObject;
|
|
index++) {
|
|
}
|
|
// Now we should have three instructions: call, return.
|
|
EXPECT_EQ(index + 2, s.size());
|
|
|
|
// Check the call instruction
|
|
const Instruction* call_instr = s[index++];
|
|
EXPECT_EQ(kArchCallCodeObject, call_instr->arch_opcode());
|
|
size_t num_operands =
|
|
1 + // Code object.
|
|
1 + // Frame state deopt id
|
|
4 + // One input for each value in frame state + context.
|
|
4 + // One input for each value in the parent frame state + context.
|
|
1 + // Function.
|
|
1; // Context.
|
|
EXPECT_EQ(num_operands, call_instr->InputCount());
|
|
// Code object.
|
|
EXPECT_TRUE(call_instr->InputAt(0)->IsImmediate());
|
|
|
|
// Deoptimization id.
|
|
int32_t deopt_id_before = s.ToInt32(call_instr->InputAt(1));
|
|
FrameStateDescriptor* desc_before =
|
|
s.GetFrameStateDescriptor(deopt_id_before);
|
|
EXPECT_EQ(bailout_id_before, desc_before->bailout_id());
|
|
EXPECT_EQ(1u, desc_before->parameters_count());
|
|
EXPECT_EQ(1u, desc_before->locals_count());
|
|
EXPECT_EQ(1u, desc_before->stack_count());
|
|
EXPECT_EQ(63, s.ToInt32(call_instr->InputAt(2)));
|
|
// Context:
|
|
EXPECT_EQ(66, s.ToInt32(call_instr->InputAt(3)));
|
|
EXPECT_EQ(64, s.ToInt32(call_instr->InputAt(4)));
|
|
EXPECT_EQ(65, s.ToInt32(call_instr->InputAt(5)));
|
|
// Values from parent environment should follow.
|
|
EXPECT_EQ(43, s.ToInt32(call_instr->InputAt(6)));
|
|
EXPECT_EQ(46, s.ToInt32(call_instr->InputAt(7)));
|
|
EXPECT_EQ(44, s.ToInt32(call_instr->InputAt(8)));
|
|
EXPECT_EQ(45, s.ToInt32(call_instr->InputAt(9)));
|
|
|
|
// Function.
|
|
EXPECT_EQ(function_node->id(), s.ToVreg(call_instr->InputAt(10)));
|
|
// Context.
|
|
EXPECT_EQ(context2->id(), s.ToVreg(call_instr->InputAt(11)));
|
|
// Continuation.
|
|
|
|
EXPECT_EQ(kArchRet, s[index++]->arch_opcode());
|
|
EXPECT_EQ(index, s.size());
|
|
}
|
|
|
|
} // namespace compiler
|
|
} // namespace internal
|
|
} // namespace v8
|