v8/test/cctest/compiler/test-basic-block-profiler.cc
mstarzinger 16f133001f Move compiler cctests into v8::internal::compiler namespace.
This moves all cctest files for the compiler to live in the same
namespace as the components they are testing. Hence we can avoid the
forbidden using directives pulling in entire namespaces.

From the Google C++ style guide: "You may not use a using-directive to
make all names from a namespace available". This would be covered by
presubmit linter checks if build/namespaces were not blacklisted.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1424943004

Cr-Commit-Position: refs/heads/master@{#31671}
2015-10-30 09:16:39 +00:00

117 lines
2.8 KiB
C++

// 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.
// TODO(jochen): Remove this after the setting is turned on globally.
#define V8_IMMINENT_DEPRECATION_WARNINGS
#include "src/basic-block-profiler.h"
#include "test/cctest/cctest.h"
#include "test/cctest/compiler/codegen-tester.h"
namespace v8 {
namespace internal {
namespace compiler {
typedef RawMachineAssembler::Label MLabel;
class BasicBlockProfilerTest : public RawMachineAssemblerTester<int32_t> {
public:
BasicBlockProfilerTest() : RawMachineAssemblerTester<int32_t>(kMachInt32) {
FLAG_turbo_profiling = true;
}
void ResetCounts() { isolate()->basic_block_profiler()->ResetCounts(); }
void Expect(size_t size, uint32_t* expected) {
CHECK(isolate()->basic_block_profiler());
const BasicBlockProfiler::DataList* l =
isolate()->basic_block_profiler()->data_list();
CHECK_NE(0, static_cast<int>(l->size()));
const BasicBlockProfiler::Data* data = l->back();
CHECK_EQ(static_cast<int>(size), static_cast<int>(data->n_blocks()));
const uint32_t* counts = data->counts();
for (size_t i = 0; i < size; ++i) {
CHECK_EQ(static_cast<int>(expected[i]), static_cast<int>(counts[i]));
}
}
};
TEST(ProfileDiamond) {
BasicBlockProfilerTest m;
MLabel blocka, blockb, end;
m.Branch(m.Parameter(0), &blocka, &blockb);
m.Bind(&blocka);
m.Goto(&end);
m.Bind(&blockb);
m.Goto(&end);
m.Bind(&end);
m.Return(m.Int32Constant(0));
m.GenerateCode();
{
uint32_t expected[] = {0, 0, 0, 0};
m.Expect(arraysize(expected), expected);
}
m.Call(0);
{
uint32_t expected[] = {1, 1, 0, 1};
m.Expect(arraysize(expected), expected);
}
m.ResetCounts();
m.Call(1);
{
uint32_t expected[] = {1, 0, 1, 1};
m.Expect(arraysize(expected), expected);
}
m.Call(0);
{
uint32_t expected[] = {2, 1, 1, 2};
m.Expect(arraysize(expected), expected);
}
}
TEST(ProfileLoop) {
BasicBlockProfilerTest m;
MLabel header, body, end;
Node* one = m.Int32Constant(1);
m.Goto(&header);
m.Bind(&header);
Node* count = m.Phi(kMachInt32, m.Parameter(0), one);
m.Branch(count, &body, &end);
m.Bind(&body);
count->ReplaceInput(1, m.Int32Sub(count, one));
m.Goto(&header);
m.Bind(&end);
m.Return(one);
m.GenerateCode();
{
uint32_t expected[] = {0, 0, 0, 0};
m.Expect(arraysize(expected), expected);
}
uint32_t runs[] = {0, 1, 500, 10000};
for (size_t i = 0; i < arraysize(runs); i++) {
m.ResetCounts();
CHECK_EQ(1, m.Call(static_cast<int>(runs[i])));
uint32_t expected[] = {1, runs[i] + 1, runs[i], 1};
m.Expect(arraysize(expected), expected);
}
}
} // namespace compiler
} // namespace internal
} // namespace v8