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Some const declarations changed to constexpr 

PiperOrigin-RevId: 307629520
Change-Id: I22dcc35701417a184b77791ec3efe4a2957251bc
This commit is contained in:
A. Unique TensorFlower 2020-04-21 10:17:31 -07:00 committed by TensorFlower Gardener
parent 298b24151e
commit c5fd4efc4c
20 changed files with 49 additions and 49 deletions
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2
tensorflow/compiler/aot/benchmark.h
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@ -38,7 +38,7 @@ namespace benchmark {
struct Options {
// kDefaultMicros specifies the default time to run the benchmark, and is used
// if neither max_iters nor max_micros is set.
static const int64 kDefaultMicros = 3000000;
static constexpr int64 kDefaultMicros = 3000000;
int64 max_iters = 0; // Maximum iterations to run, ignored if <= 0.
int64 max_micros = 0; // Maximum microseconds to run, ignored if <= 0.

2
tensorflow/core/common_runtime/gpu/gpu_event_mgr_test.cc
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@ -191,7 +191,7 @@ class EMBenchmarkHelper {
public:
// Length of tensors. TODO(tucker): make this a variable parameter.
static const int kTDim = 1024;
static constexpr int kTDim = 1024;
int num_ops() const { return add_kernels_.size(); }
size_t tensor_size() const {

4
tensorflow/core/framework/op_kernel.h
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@ -694,8 +694,8 @@ class OpKernelContext {
checkpoint::TensorSliceReaderCacheWrapper* slice_reader_cache = nullptr;
// Support for forwarding reservations (used by ScopedAllocator).
static const int kNeverForward = -2;
static const int kNoReservation = -1;
static constexpr int kNeverForward = -2;
static constexpr int kNoReservation = -1;
// Values in [0,...) represent reservations for the indexed output.
const int* forward_from_array = nullptr;

2
tensorflow/core/framework/shape_inference_test.cc
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@ -74,7 +74,7 @@ class ShapeInferenceTest : public ::testing::Test {
void TestMergeHandles(bool input_not_output);
void TestRelaxHandles(bool input_not_output);
static const int kVersion = 0; // used for graph-def version.
static constexpr int kVersion = 0; // used for graph-def version.
};
TEST_F(ShapeInferenceTest, InputOutputByName) {

10
tensorflow/core/framework/tensor_shape.h
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@ -103,10 +103,10 @@ class TensorShapeRep {
// We use the max value of uint16 or uint32 to represent unknown shapes, so
// the maximum representable valid shape in these representations is one less.
static const int64 kMaxRep16 = std::numeric_limits<uint16>::max() - 1;
static const int64 kMaxRep32 = std::numeric_limits<uint32>::max() - 1;
static const uint16 kUnknownRep16 = std::numeric_limits<uint16>::max();
static const uint32 kUnknownRep32 = std::numeric_limits<uint32>::max();
static constexpr int64 kMaxRep16 = std::numeric_limits<uint16>::max() - 1;
static constexpr int64 kMaxRep32 = std::numeric_limits<uint32>::max() - 1;
static constexpr uint16 kUnknownRep16 = std::numeric_limits<uint16>::max();
static constexpr uint32 kUnknownRep32 = std::numeric_limits<uint32>::max();
Rep16* as16() { return reinterpret_cast<Rep16*>(buf()); }
Rep32* as32() { return reinterpret_cast<Rep32*>(buf()); }
@ -134,7 +134,7 @@ class TensorShapeRep {
// We store the number of dimensions in byte 14, and the RepTag in byte 15.
// Bytes [0..13] vary depending on the representation.
// A value of 255 indicates unknown rank in the PartialTensorShape case.
static const uint8 kUnknownRank = 255;
static constexpr uint8 kUnknownRank = 255;
uint8 ndims_byte() const { return buf()[14]; }
void set_ndims_byte(uint8 nd) { buf()[14] = nd; }

10
tensorflow/core/framework/tensor_testutil.h
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@ -116,11 +116,11 @@ namespace internal {
template <typename T>
struct is_floating_point_type {
static const bool value = std::is_same<T, Eigen::half>::value ||
std::is_same<T, float>::value ||
std::is_same<T, double>::value ||
std::is_same<T, std::complex<float>>::value ||
std::is_same<T, std::complex<double>>::value;
static constexpr bool value = std::is_same<T, Eigen::half>::value ||
std::is_same<T, float>::value ||
std::is_same<T, double>::value ||
std::is_same<T, std::complex<float>>::value ||
std::is_same<T, std::complex<double>>::value;
};
template <typename T>

4
tensorflow/core/framework/type_traits.h
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@ -26,10 +26,10 @@ namespace tensorflow {
// Functions to define quantization attribute of types.
struct true_type {
static const bool value = true;
static constexpr bool value = true;
};
struct false_type {
static const bool value = false;
static constexpr bool value = false;
};
// Default is_quantized is false.

2
tensorflow/core/graph/graph_partition.h
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@ -42,7 +42,7 @@ struct PartitionOptions {
// A function that returns the incarnation of a device given the
// device's fullname. If not found, GetIncarnationFunc should return
// kIllegalIncarnation.
static const uint64 kIllegalIncarnation = 0;
static constexpr uint64 kIllegalIncarnation = 0;
typedef std::function<uint64(const string&)> GetIncarnationFunc;
GetIncarnationFunc get_incarnation = nullptr;

2
tensorflow/core/platform/default/subprocess.h
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@ -101,7 +101,7 @@ class SubProcess {
string* stderr_output);
private:
static const int kNFds = 3;
static constexpr int kNFds = 3;
static bool chan_valid(int chan) { return ((chan >= 0) && (chan < kNFds)); }
static bool retry(int e) {
return ((e == EINTR) || (e == EAGAIN) || (e == EWOULDBLOCK));

2
tensorflow/core/platform/env.cc
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@ -522,7 +522,7 @@ class FileStream : public ::tensorflow::protobuf::io::ZeroCopyInputStream {
}
private:
static const int kBufSize = 512 << 10;
static constexpr int kBufSize = 512 << 10;
RandomAccessFile* file_;
int64 pos_;

2
tensorflow/core/platform/protobuf.h
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@ -114,7 +114,7 @@ class TStringOutputStream : public protobuf::io::ZeroCopyOutputStream {
int64_t ByteCount() const override;
private:
static const int kMinimumSize = 16;
static constexpr int kMinimumSize = 16;
tstring* target_;
};

2
tensorflow/core/util/tensor_slice_reader.h
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@ -61,7 +61,7 @@ class TensorSliceReader {
};
typedef std::function<Status(const string&, Table**)> OpenTableFunction;
static const int kLoadAllShards = -1;
static constexpr int kLoadAllShards = -1;
TensorSliceReader(const string& filepattern);
TensorSliceReader(const string& filepattern, OpenTableFunction open_function);
TensorSliceReader(const string& filepattern, OpenTableFunction open_function,

4
tensorflow/core/util/tensor_slice_writer.h
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@ -68,7 +68,7 @@ class TensorSliceWriter {
static size_t MaxBytesPerElement(DataType dt);
private:
static const size_t kMaxMessageBytes = 1LL << 31;
static constexpr size_t kMaxMessageBytes = 1LL << 31;
// Filling in the TensorProto in a SavedSlice will add the following
// header bytes, in addition to the data:
// - 1 byte: TensorProto tag and wire format
@ -77,7 +77,7 @@ class TensorSliceWriter {
// - <= 5 bytes: *_val length
// However, we add 1KB of slack, to be conservative and guard
// against other additions to the TensorProto.
static const size_t kTensorProtoHeaderBytes = 1 << 10;
static constexpr size_t kTensorProtoHeaderBytes = 1 << 10;
const string filename_;
const CreateBuilderFunction create_builder_;

6
tensorflow/lite/delegates/gpu/cl/model_hints.h
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@ -26,11 +26,11 @@ struct ModelHints {
using ModelHint = uint64_t;
// By default we want the fastest inference
static const ModelHint kFastestInference = 0x00000000;
static constexpr ModelHint kFastestInference = 0x00000000;
// Can improve compilation time, but inference can be slower
static const ModelHint kReduceKernelsCount = 0x00000001;
static constexpr ModelHint kReduceKernelsCount = 0x00000001;
// Can improve tuning time, but inference can be slower
static const ModelHint kFastTuning = 0x00000002;
static constexpr ModelHint kFastTuning = 0x00000002;
void Add(ModelHint hint) {
if (hint == kFastestInference) {

2
tensorflow/lite/interpreter_test.cc
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@ -1094,7 +1094,7 @@ TEST(InterpreterTensorsCapacityTest, TestExceedHeadroom) {
}
struct TestExternalContext : public TfLiteExternalContext {
static const TfLiteExternalContextType kType = kTfLiteGemmLowpContext;
static constexpr TfLiteExternalContextType kType = kTfLiteGemmLowpContext;
static TestExternalContext* Get(TfLiteContext* context) {
return reinterpret_cast<TestExternalContext*>(

20
tensorflow/lite/kernels/test_util.h
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@ -816,40 +816,40 @@ struct TypeUnion;
template <>
struct TypeUnion<float> {
public:
static const TensorType tensor_type = TensorType::TensorType_FLOAT32;
static const TfLiteType tflite_type = TfLiteType::kTfLiteFloat32;
static constexpr TensorType tensor_type = TensorType::TensorType_FLOAT32;
static constexpr TfLiteType tflite_type = TfLiteType::kTfLiteFloat32;
typedef float ScalarType;
};
template <>
struct TypeUnion<int32_t> {
public:
static const TensorType tensor_type = TensorType::TensorType_INT32;
static const TfLiteType tflite_type = TfLiteType::kTfLiteInt32;
static constexpr TensorType tensor_type = TensorType::TensorType_INT32;
static constexpr TfLiteType tflite_type = TfLiteType::kTfLiteInt32;
typedef int32_t ScalarType;
};
template <>
struct TypeUnion<int16_t> {
public:
static const TensorType tensor_type = TensorType::TensorType_INT16;
static const TfLiteType tflite_type = TfLiteType::kTfLiteInt16;
static constexpr TensorType tensor_type = TensorType::TensorType_INT16;
static constexpr TfLiteType tflite_type = TfLiteType::kTfLiteInt16;
typedef int16_t ScalarType;
};
template <>
struct TypeUnion<int8_t> {
public:
static const TensorType tensor_type = TensorType::TensorType_INT8;
static const TfLiteType tflite_type = TfLiteType::kTfLiteInt8;
static constexpr TensorType tensor_type = TensorType::TensorType_INT8;
static constexpr TfLiteType tflite_type = TfLiteType::kTfLiteInt8;
typedef int8_t ScalarType;
};
template <>
struct TypeUnion<uint8_t> {
public:
static const TensorType tensor_type = TensorType::TensorType_UINT8;
static const TfLiteType tflite_type = TfLiteType::kTfLiteUInt8;
static constexpr TensorType tensor_type = TensorType::TensorType_UINT8;
static constexpr TfLiteType tflite_type = TfLiteType::kTfLiteUInt8;
typedef uint8_t ScalarType;
};

10
tensorflow/stream_executor/device_options.h
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@ -39,19 +39,19 @@ struct DeviceOptions {
// this flag prevents it from ever being deallocated. Potentially saves
// thrashing the thread stack memory allocation, but at the potential cost of
// some memory space.
static const unsigned kDoNotReclaimStackAllocation = 0x1;
static constexpr unsigned kDoNotReclaimStackAllocation = 0x1;
// The following options refer to synchronization options when
// using SynchronizeStream or SynchronizeContext.
// Synchronize with spinlocks.
static const unsigned kScheduleSpin = 0x02;
static constexpr unsigned kScheduleSpin = 0x02;
// Synchronize with spinlocks that also call CPU yield instructions.
static const unsigned kScheduleYield = 0x04;
static constexpr unsigned kScheduleYield = 0x04;
// Synchronize with a "synchronization primitive" (e.g. mutex).
static const unsigned kScheduleBlockingSync = 0x08;
static constexpr unsigned kScheduleBlockingSync = 0x08;
static const unsigned kMask = 0xf; // Mask of all available flags.
static constexpr unsigned kMask = 0xf; // Mask of all available flags.
// Constructs an or-d together set of device options.
explicit DeviceOptions(unsigned flags) : flags_(flags) {

6
tensorflow/stream_executor/gpu/redzone_allocator.h
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@ -39,10 +39,10 @@ namespace stream_executor {
// memory for cudnn convolutions.
class RedzoneAllocator : public ScratchAllocator {
public:
static const int64 kDefaultMemoryLimit = 1LL << 32; // 4GB
static const int64 kDefaultRedzoneSize =
static constexpr int64 kDefaultMemoryLimit = 1LL << 32; // 4GB
static constexpr int64 kDefaultRedzoneSize =
1LL << 23; // 8MiB per side, 16MiB total.
static const uint8 kDefaultRedzonePattern = -1;
static constexpr uint8 kDefaultRedzonePattern = -1;
RedzoneAllocator(Stream* stream, DeviceMemoryAllocator* memory_allocator,
GpuAsmOpts gpu_compilation_opts_,
int64 memory_limit = kDefaultMemoryLimit,

4
tensorflow/stream_executor/rng.h
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@ -40,8 +40,8 @@ namespace rng {
// thread-hostility.
class RngSupport {
public:
static const int kMinSeedBytes = 16;
static const int kMaxSeedBytes = INT_MAX;
static constexpr int kMinSeedBytes = 16;
static constexpr int kMaxSeedBytes = INT_MAX;
// Releases any random-number-generation resources associated with this
// support object in the underlying platform implementation.

2
tensorflow/stream_executor/stream_executor_pimpl.h
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@ -723,7 +723,7 @@ class StreamExecutor {
// Only one worker thread is needed; little work will be done by the
// executor.
static const int kNumBackgroundThreads = 1;
static constexpr int kNumBackgroundThreads = 1;
// Indicates if StreamExecutor operation tracing should be performed.
bool tracing_enabled_;