v8/test/compiler-unittests/instruction-selector-unittest.cc

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// 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 "test/compiler-unittests/instruction-selector-unittest.h"
#include "src/flags.h"
namespace v8 {
namespace internal {
namespace compiler {
InstructionSelectorTest::InstructionSelectorTest() : rng_(FLAG_random_seed) {}
InstructionSelectorTest::Stream InstructionSelectorTest::StreamBuilder::Build(
InstructionSelector::Features features,
InstructionSelectorTest::StreamBuilderMode mode) {
Schedule* schedule = Export();
if (FLAG_trace_turbo) {
OFStream out(stdout);
out << "=== Schedule before instruction selection ===" << endl << *schedule;
}
EXPECT_NE(0, graph()->NodeCount());
CompilationInfo info(test_->isolate(), test_->zone());
Linkage linkage(&info, call_descriptor());
InstructionSequence sequence(&linkage, graph(), schedule);
SourcePositionTable source_position_table(graph());
InstructionSelector selector(&sequence, &source_position_table, features);
selector.SelectInstructions();
if (FLAG_trace_turbo) {
OFStream out(stdout);
out << "=== Code sequence after instruction selection ===" << endl
<< sequence;
}
Stream s;
for (InstructionSequence::const_iterator i = sequence.begin();
i != sequence.end(); ++i) {
Instruction* instr = *i;
if (instr->opcode() < 0) continue;
if (mode == kTargetInstructions) {
switch (instr->arch_opcode()) {
#define CASE(Name) \
case k##Name: \
break;
TARGET_ARCH_OPCODE_LIST(CASE)
#undef CASE
default:
continue;
}
}
for (size_t i = 0; i < instr->OutputCount(); ++i) {
InstructionOperand* output = instr->OutputAt(i);
EXPECT_NE(InstructionOperand::IMMEDIATE, output->kind());
if (output->IsConstant()) {
s.constants_.insert(std::make_pair(
output->index(), sequence.GetConstant(output->index())));
}
}
for (size_t i = 0; i < instr->InputCount(); ++i) {
InstructionOperand* input = instr->InputAt(i);
EXPECT_NE(InstructionOperand::CONSTANT, input->kind());
if (input->IsImmediate()) {
s.immediates_.insert(std::make_pair(
input->index(), sequence.GetImmediate(input->index())));
}
}
s.instructions_.push_back(instr);
}
return s;
}
TARGET_TEST_F(InstructionSelectorTest, ReturnParameter) {
StreamBuilder m(this, kMachineWord32, kMachineWord32);
m.Return(m.Parameter(0));
Stream s = m.Build(kAllInstructions);
ASSERT_EQ(2U, s.size());
EXPECT_EQ(kArchNop, s[0]->arch_opcode());
ASSERT_EQ(1U, s[0]->OutputCount());
EXPECT_EQ(kArchRet, s[1]->arch_opcode());
EXPECT_EQ(1U, s[1]->InputCount());
}
TARGET_TEST_F(InstructionSelectorTest, ReturnZero) {
StreamBuilder m(this, kMachineWord32);
m.Return(m.Int32Constant(0));
Stream s = m.Build(kAllInstructions);
ASSERT_EQ(2U, s.size());
EXPECT_EQ(kArchNop, s[0]->arch_opcode());
ASSERT_EQ(1U, s[0]->OutputCount());
EXPECT_EQ(InstructionOperand::CONSTANT, s[0]->OutputAt(0)->kind());
EXPECT_EQ(0, s.ToInt32(s[0]->OutputAt(0)));
EXPECT_EQ(kArchRet, s[1]->arch_opcode());
EXPECT_EQ(1U, s[1]->InputCount());
}
} // namespace compiler
} // namespace internal
} // namespace v8