/// Factory method to create an appropriately typed reader for the given
/// instrprof file.
static ErrorOr<std::unique_ptr<InstrProfReader>> create(std::string Path);
+
+ static ErrorOr<std::unique_ptr<InstrProfReader>>
+ create(std::unique_ptr<MemoryBuffer> Buffer);
};
/// Reader for the simple text based instrprof format.
/// Factory method to create an indexed reader.
static ErrorOr<std::unique_ptr<IndexedInstrProfReader>>
create(std::string Path);
+
+ static ErrorOr<std::unique_ptr<IndexedInstrProfReader>>
+ create(std::unique_ptr<MemoryBuffer> Buffer);
};
} // end namespace llvm
std::error_code addFunctionCounts(StringRef FunctionName,
uint64_t FunctionHash,
ArrayRef<uint64_t> Counters);
- /// Ensure that all data is written to disk.
+ /// Write the profile to \c OS
void write(raw_fd_ostream &OS);
+ /// Write the profile, returning the raw data. For testing.
+ std::string writeString();
+private:
+ std::pair<uint64_t, uint64_t> writeImpl(raw_ostream &OS);
};
} // end namespace llvm
MemoryBuffer::getFileOrSTDIN(Path);
if (std::error_code EC = BufferOrErr.getError())
return EC;
- auto Buffer = std::move(BufferOrErr.get());
-
- // Sanity check the file.
- if (Buffer->getBufferSize() > std::numeric_limits<unsigned>::max())
- return instrprof_error::too_large;
- return std::move(Buffer);
+ return std::move(BufferOrErr.get());
}
static std::error_code initializeReader(InstrProfReader &Reader) {
auto BufferOrError = setupMemoryBuffer(Path);
if (std::error_code EC = BufferOrError.getError())
return EC;
+ return InstrProfReader::create(std::move(BufferOrError.get()));
+}
- auto Buffer = std::move(BufferOrError.get());
- std::unique_ptr<InstrProfReader> Result;
+ErrorOr<std::unique_ptr<InstrProfReader>>
+InstrProfReader::create(std::unique_ptr<MemoryBuffer> Buffer) {
+ // Sanity check the buffer.
+ if (Buffer->getBufferSize() > std::numeric_limits<unsigned>::max())
+ return instrprof_error::too_large;
+ std::unique_ptr<InstrProfReader> Result;
// Create the reader.
if (IndexedInstrProfReader::hasFormat(*Buffer))
Result.reset(new IndexedInstrProfReader(std::move(Buffer)));
auto BufferOrError = setupMemoryBuffer(Path);
if (std::error_code EC = BufferOrError.getError())
return EC;
+ return IndexedInstrProfReader::create(std::move(BufferOrError.get()));
+}
+
- auto Buffer = std::move(BufferOrError.get());
- std::unique_ptr<IndexedInstrProfReader> Result;
+ErrorOr<std::unique_ptr<IndexedInstrProfReader>>
+IndexedInstrProfReader::create(std::unique_ptr<MemoryBuffer> Buffer) {
+ // Sanity check the buffer.
+ if (Buffer->getBufferSize() > std::numeric_limits<unsigned>::max())
+ return instrprof_error::too_large;
// Create the reader.
if (!IndexedInstrProfReader::hasFormat(*Buffer))
return instrprof_error::bad_magic;
- Result.reset(new IndexedInstrProfReader(std::move(Buffer)));
+ auto Result = llvm::make_unique<IndexedInstrProfReader>(std::move(Buffer));
// Initialize the reader and return the result.
if (std::error_code EC = initializeReader(*Result))
return instrprof_error::success;
}
-void InstrProfWriter::write(raw_fd_ostream &OS) {
+std::pair<uint64_t, uint64_t> InstrProfWriter::writeImpl(raw_ostream &OS) {
OnDiskChainedHashTableGenerator<InstrProfRecordTrait> Generator;
// Populate the hash table generator.
// Write the hash table.
uint64_t HashTableStart = Generator.Emit(OS);
+ return std::make_pair(HashTableStartLoc, HashTableStart);
+}
+
+void InstrProfWriter::write(raw_fd_ostream &OS) {
+ // Write the hash table.
+ auto TableStart = writeImpl(OS);
+
// Go back and fill in the hash table start.
- OS.seek(HashTableStartLoc);
- LE.write<uint64_t>(HashTableStart);
+ using namespace support;
+ OS.seek(TableStart.first);
+ endian::Writer<little>(OS).write<uint64_t>(TableStart.second);
+}
+
+std::string InstrProfWriter::writeString() {
+ std::string Result;
+ llvm::raw_string_ostream OS(Result);
+ // Write the hash table.
+ auto TableStart = writeImpl(OS);
+ OS.flush();
+
+ // Go back and fill in the hash table start.
+ using namespace support;
+ uint64_t Bytes = endian::byte_swap<uint64_t, little>(TableStart.second);
+ Result.replace(TableStart.first, sizeof(uint64_t), (const char *)&Bytes,
+ sizeof(uint64_t));
+
+ return Result;
}
add_llvm_unittest(ProfileDataTests
CoverageMappingTest.cpp
+ InstrProfTest.cpp
)
--- /dev/null
+//===- unittest/ProfileData/InstrProfTest.cpp -------------------------------=//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ProfileData/InstrProfReader.h"
+#include "llvm/ProfileData/InstrProfWriter.h"
+#include "gtest/gtest.h"
+
+using namespace llvm;
+
+namespace {
+
+TEST(InstrProfTest, write_and_read_empty_profile) {
+ InstrProfWriter Writer;
+ std::string Profile = Writer.writeString();
+ auto ReaderOrErr =
+ IndexedInstrProfReader::create(MemoryBuffer::getMemBuffer(Profile));
+ ASSERT_EQ(std::error_code(), ReaderOrErr.getError());
+ auto Reader = std::move(ReaderOrErr.get());
+ ASSERT_TRUE(Reader->begin() == Reader->end());
+}
+
+TEST(InstrProfTest, write_and_read_one_function) {
+ InstrProfWriter Writer;
+ Writer.addFunctionCounts("foo", 0x1234, {1, 2, 3, 4});
+ std::string Profile = Writer.writeString();
+ auto ReaderOrErr =
+ IndexedInstrProfReader::create(MemoryBuffer::getMemBuffer(Profile));
+ ASSERT_EQ(std::error_code(), ReaderOrErr.getError());
+ auto Reader = std::move(ReaderOrErr.get());
+
+ auto I = Reader->begin(), E = Reader->end();
+ ASSERT_TRUE(I != E);
+ ASSERT_EQ(StringRef("foo"), I->Name);
+ ASSERT_EQ(0x1234U, I->Hash);
+ ASSERT_EQ(4U, I->Counts.size());
+ ASSERT_EQ(1U, I->Counts[0]);
+ ASSERT_EQ(2U, I->Counts[1]);
+ ASSERT_EQ(3U, I->Counts[2]);
+ ASSERT_EQ(4U, I->Counts[3]);
+ ASSERT_TRUE(++I == E);
+}
+
+TEST(InstrProfTest, get_function_counts) {
+ InstrProfWriter Writer;
+ Writer.addFunctionCounts("foo", 0x1234, {1, 2});
+ std::string Profile = Writer.writeString();
+ auto ReaderOrErr =
+ IndexedInstrProfReader::create(MemoryBuffer::getMemBuffer(Profile));
+ ASSERT_EQ(std::error_code(), ReaderOrErr.getError());
+ auto Reader = std::move(ReaderOrErr.get());
+
+ std::vector<uint64_t> Counts;
+ std::error_code EC;
+
+ EC = Reader->getFunctionCounts("foo", 0x1234, Counts);
+ ASSERT_EQ(instrprof_error::success, EC);
+ ASSERT_EQ(2U, Counts.size());
+ ASSERT_EQ(1U, Counts[0]);
+ ASSERT_EQ(2U, Counts[1]);
+
+ EC = Reader->getFunctionCounts("foo", 0x5678, Counts);
+ ASSERT_EQ(instrprof_error::hash_mismatch, EC);
+
+ EC = Reader->getFunctionCounts("bar", 0x1234, Counts);
+ ASSERT_EQ(instrprof_error::unknown_function, EC);
+}
+
+TEST(InstrProfTest, get_max_function_count) {
+ InstrProfWriter Writer;
+ Writer.addFunctionCounts("foo", 0x1234, {1ULL << 31, 2});
+ Writer.addFunctionCounts("bar", 0, {1ULL << 63});
+ Writer.addFunctionCounts("baz", 0x5678, {0, 0, 0, 0});
+ std::string Profile = Writer.writeString();
+ auto ReaderOrErr =
+ IndexedInstrProfReader::create(MemoryBuffer::getMemBuffer(Profile));
+ ASSERT_EQ(std::error_code(), ReaderOrErr.getError());
+ auto Reader = std::move(ReaderOrErr.get());
+
+ ASSERT_EQ(1ULL << 63, Reader->getMaximumFunctionCount());
+}
+
+} // end anonymous namespace
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