Remove LLVM 8.0.1 files.

1 files changed, 0 insertions, 471 deletions

diff --git a/gnu/llvm/lib/XRay/Trace.cpp b/gnu/llvm/lib/XRay/Trace.cpp
deleted file mode 100644
index 4f28f3f754c..00000000000
--- a/gnu/llvm/lib/XRay/Trace.cpp
+++ /dev/null
@@ -1,471 +0,0 @@
-//===- Trace.cpp - XRay Trace Loading implementation. ---------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// XRay log reader implementation.
-//
-//===----------------------------------------------------------------------===//
-#include "llvm/XRay/Trace.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/Support/DataExtractor.h"
-#include "llvm/Support/Error.h"
-#include "llvm/Support/FileSystem.h"
-#include "llvm/XRay/BlockIndexer.h"
-#include "llvm/XRay/BlockVerifier.h"
-#include "llvm/XRay/FDRRecordConsumer.h"
-#include "llvm/XRay/FDRRecordProducer.h"
-#include "llvm/XRay/FDRRecords.h"
-#include "llvm/XRay/FDRTraceExpander.h"
-#include "llvm/XRay/FileHeaderReader.h"
-#include "llvm/XRay/YAMLXRayRecord.h"
-#include <memory>
-#include <vector>
-
-using namespace llvm;
-using namespace llvm::xray;
-using llvm::yaml::Input;
-
-namespace {
-using XRayRecordStorage =
-    std::aligned_storage<sizeof(XRayRecord), alignof(XRayRecord)>::type;
-
-Error loadNaiveFormatLog(StringRef Data, bool IsLittleEndian,
-                         XRayFileHeader &FileHeader,
-                         std::vector<XRayRecord> &Records) {
-  if (Data.size() < 32)
-    return make_error<StringError>(
-        "Not enough bytes for an XRay log.",
-        std::make_error_code(std::errc::invalid_argument));
-
-  if (Data.size() - 32 == 0 || Data.size() % 32 != 0)
-    return make_error<StringError>(
-        "Invalid-sized XRay data.",
-        std::make_error_code(std::errc::invalid_argument));
-
-  DataExtractor Reader(Data, IsLittleEndian, 8);
-  uint32_t OffsetPtr = 0;
-  auto FileHeaderOrError = readBinaryFormatHeader(Reader, OffsetPtr);
-  if (!FileHeaderOrError)
-    return FileHeaderOrError.takeError();
-  FileHeader = std::move(FileHeaderOrError.get());
-
-  // Each record after the header will be 32 bytes, in the following format:
-  //
-  //   (2)   uint16 : record type
-  //   (1)   uint8  : cpu id
-  //   (1)   uint8  : type
-  //   (4)   sint32 : function id
-  //   (8)   uint64 : tsc
-  //   (4)   uint32 : thread id
-  //   (4)   uint32 : process id
-  //   (8)   -      : padding
-  while (Reader.isValidOffset(OffsetPtr)) {
-    if (!Reader.isValidOffsetForDataOfSize(OffsetPtr, 32))
-      return createStringError(
-          std::make_error_code(std::errc::executable_format_error),
-          "Not enough bytes to read a full record at offset %d.", OffsetPtr);
-    auto PreReadOffset = OffsetPtr;
-    auto RecordType = Reader.getU16(&OffsetPtr);
-    if (OffsetPtr == PreReadOffset)
-      return createStringError(
-          std::make_error_code(std::errc::executable_format_error),
-          "Failed reading record type at offset %d.", OffsetPtr);
-
-    switch (RecordType) {
-    case 0: { // Normal records.
-      Records.emplace_back();
-      auto &Record = Records.back();
-      Record.RecordType = RecordType;
-
-      PreReadOffset = OffsetPtr;
-      Record.CPU = Reader.getU8(&OffsetPtr);
-      if (OffsetPtr == PreReadOffset)
-        return createStringError(
-            std::make_error_code(std::errc::executable_format_error),
-            "Failed reading CPU field at offset %d.", OffsetPtr);
-
-      PreReadOffset = OffsetPtr;
-      auto Type = Reader.getU8(&OffsetPtr);
-      if (OffsetPtr == PreReadOffset)
-        return createStringError(
-            std::make_error_code(std::errc::executable_format_error),
-            "Failed reading record type field at offset %d.", OffsetPtr);
-
-      switch (Type) {
-      case 0:
-        Record.Type = RecordTypes::ENTER;
-        break;
-      case 1:
-        Record.Type = RecordTypes::EXIT;
-        break;
-      case 2:
-        Record.Type = RecordTypes::TAIL_EXIT;
-        break;
-      case 3:
-        Record.Type = RecordTypes::ENTER_ARG;
-        break;
-      default:
-        return createStringError(
-            std::make_error_code(std::errc::executable_format_error),
-            "Unknown record type '%d' at offset %d.", Type, OffsetPtr);
-      }
-
-      PreReadOffset = OffsetPtr;
-      Record.FuncId = Reader.getSigned(&OffsetPtr, sizeof(int32_t));
-      if (OffsetPtr == PreReadOffset)
-        return createStringError(
-            std::make_error_code(std::errc::executable_format_error),
-            "Failed reading function id field at offset %d.", OffsetPtr);
-
-      PreReadOffset = OffsetPtr;
-      Record.TSC = Reader.getU64(&OffsetPtr);
-      if (OffsetPtr == PreReadOffset)
-        return createStringError(
-            std::make_error_code(std::errc::executable_format_error),
-            "Failed reading TSC field at offset %d.", OffsetPtr);
-
-      PreReadOffset = OffsetPtr;
-      Record.TId = Reader.getU32(&OffsetPtr);
-      if (OffsetPtr == PreReadOffset)
-        return createStringError(
-            std::make_error_code(std::errc::executable_format_error),
-            "Failed reading thread id field at offset %d.", OffsetPtr);
-
-      PreReadOffset = OffsetPtr;
-      Record.PId = Reader.getU32(&OffsetPtr);
-      if (OffsetPtr == PreReadOffset)
-        return createStringError(
-            std::make_error_code(std::errc::executable_format_error),
-            "Failed reading process id at offset %d.", OffsetPtr);
-
-      break;
-    }
-    case 1: { // Arg payload record.
-      auto &Record = Records.back();
-
-      // We skip the next two bytes of the record, because we don't need the
-      // type and the CPU record for arg payloads.
-      OffsetPtr += 2;
-      PreReadOffset = OffsetPtr;
-      int32_t FuncId = Reader.getSigned(&OffsetPtr, sizeof(int32_t));
-      if (OffsetPtr == PreReadOffset)
-        return createStringError(
-            std::make_error_code(std::errc::executable_format_error),
-            "Failed reading function id field at offset %d.", OffsetPtr);
-
-      PreReadOffset = OffsetPtr;
-      auto TId = Reader.getU32(&OffsetPtr);
-      if (OffsetPtr == PreReadOffset)
-        return createStringError(
-            std::make_error_code(std::errc::executable_format_error),
-            "Failed reading thread id field at offset %d.", OffsetPtr);
-
-      PreReadOffset = OffsetPtr;
-      auto PId = Reader.getU32(&OffsetPtr);
-      if (OffsetPtr == PreReadOffset)
-        return createStringError(
-            std::make_error_code(std::errc::executable_format_error),
-            "Failed reading process id field at offset %d.", OffsetPtr);
-
-      // Make a check for versions above 3 for the Pid field
-      if (Record.FuncId != FuncId || Record.TId != TId ||
-          (FileHeader.Version >= 3 ? Record.PId != PId : false))
-        return createStringError(
-            std::make_error_code(std::errc::executable_format_error),
-            "Corrupted log, found arg payload following non-matching "
-            "function+thread record. Record for function %d != %d at offset "
-            "%d",
-            Record.FuncId, FuncId, OffsetPtr);
-
-      PreReadOffset = OffsetPtr;
-      auto Arg = Reader.getU64(&OffsetPtr);
-      if (OffsetPtr == PreReadOffset)
-        return createStringError(
-            std::make_error_code(std::errc::executable_format_error),
-            "Failed reading argument payload at offset %d.", OffsetPtr);
-
-      Record.CallArgs.push_back(Arg);
-      break;
-    }
-    default:
-      return createStringError(
-          std::make_error_code(std::errc::executable_format_error),
-          "Unknown record type '%d' at offset %d.", RecordType, OffsetPtr);
-    }
-    // Advance the offset pointer enough bytes to align to 32-byte records for
-    // basic mode logs.
-    OffsetPtr += 8;
-  }
-  return Error::success();
-}
-
-/// Reads a log in FDR mode for version 1 of this binary format. FDR mode is
-/// defined as part of the compiler-rt project in xray_fdr_logging.h, and such
-/// a log consists of the familiar 32 bit XRayHeader, followed by sequences of
-/// of interspersed 16 byte Metadata Records and 8 byte Function Records.
-///
-/// The following is an attempt to document the grammar of the format, which is
-/// parsed by this function for little-endian machines. Since the format makes
-/// use of BitFields, when we support big-endian architectures, we will need to
-/// adjust not only the endianness parameter to llvm's RecordExtractor, but also
-/// the bit twiddling logic, which is consistent with the little-endian
-/// convention that BitFields within a struct will first be packed into the
-/// least significant bits the address they belong to.
-///
-/// We expect a format complying with the grammar in the following pseudo-EBNF
-/// in Version 1 of the FDR log.
-///
-/// FDRLog: XRayFileHeader ThreadBuffer*
-/// XRayFileHeader: 32 bytes to identify the log as FDR with machine metadata.
-///     Includes BufferSize
-/// ThreadBuffer: NewBuffer WallClockTime NewCPUId FunctionSequence EOB
-/// BufSize: 8 byte unsigned integer indicating how large the buffer is.
-/// NewBuffer: 16 byte metadata record with Thread Id.
-/// WallClockTime: 16 byte metadata record with human readable time.
-/// Pid: 16 byte metadata record with Pid
-/// NewCPUId: 16 byte metadata record with CPUId and a 64 bit TSC reading.
-/// EOB: 16 byte record in a thread buffer plus mem garbage to fill BufSize.
-/// FunctionSequence: NewCPUId | TSCWrap | FunctionRecord
-/// TSCWrap: 16 byte metadata record with a full 64 bit TSC reading.
-/// FunctionRecord: 8 byte record with FunctionId, entry/exit, and TSC delta.
-///
-/// In Version 2, we make the following changes:
-///
-/// ThreadBuffer: BufferExtents NewBuffer WallClockTime NewCPUId
-///               FunctionSequence
-/// BufferExtents: 16 byte metdata record describing how many usable bytes are
-///                in the buffer. This is measured from the start of the buffer
-///                and must always be at least 48 (bytes).
-///
-/// In Version 3, we make the following changes:
-///
-/// ThreadBuffer: BufferExtents NewBuffer WallClockTime Pid NewCPUId
-///               FunctionSequence
-/// EOB: *deprecated*
-///
-/// In Version 4, we make the following changes:
-///
-/// CustomEventRecord now includes the CPU data.
-///
-/// In Version 5, we make the following changes:
-///
-/// CustomEventRecord and TypedEventRecord now use TSC delta encoding similar to
-/// what FunctionRecord instances use, and we no longer need to include the CPU
-/// id in the CustomEventRecord.
-///
-Error loadFDRLog(StringRef Data, bool IsLittleEndian,
-                 XRayFileHeader &FileHeader, std::vector<XRayRecord> &Records) {
-
-  if (Data.size() < 32)
-    return createStringError(std::make_error_code(std::errc::invalid_argument),
-                             "Not enough bytes for an XRay FDR log.");
-  DataExtractor DE(Data, IsLittleEndian, 8);
-
-  uint32_t OffsetPtr = 0;
-  auto FileHeaderOrError = readBinaryFormatHeader(DE, OffsetPtr);
-  if (!FileHeaderOrError)
-    return FileHeaderOrError.takeError();
-  FileHeader = std::move(FileHeaderOrError.get());
-
-  // First we load the records into memory.
-  std::vector<std::unique_ptr<Record>> FDRRecords;
-
-  {
-    FileBasedRecordProducer P(FileHeader, DE, OffsetPtr);
-    LogBuilderConsumer C(FDRRecords);
-    while (DE.isValidOffsetForDataOfSize(OffsetPtr, 1)) {
-      auto R = P.produce();
-      if (!R)
-        return R.takeError();
-      if (auto E = C.consume(std::move(R.get())))
-        return E;
-    }
-  }
-
-  // Next we index the records into blocks.
-  BlockIndexer::Index Index;
-  {
-    BlockIndexer Indexer(Index);
-    for (auto &R : FDRRecords)
-      if (auto E = R->apply(Indexer))
-        return E;
-    if (auto E = Indexer.flush())
-      return E;
-  }
-
-  // Then we verify the consistency of the blocks.
-  {
-    for (auto &PTB : Index) {
-      auto &Blocks = PTB.second;
-      for (auto &B : Blocks) {
-        BlockVerifier Verifier;
-        for (auto *R : B.Records)
-          if (auto E = R->apply(Verifier))
-            return E;
-        if (auto E = Verifier.verify())
-          return E;
-      }
-    }
-  }
-
-  // This is now the meat of the algorithm. Here we sort the blocks according to
-  // the Walltime record in each of the blocks for the same thread. This allows
-  // us to more consistently recreate the execution trace in temporal order.
-  // After the sort, we then reconstitute `Trace` records using a stateful
-  // visitor associated with a single process+thread pair.
-  {
-    for (auto &PTB : Index) {
-      auto &Blocks = PTB.second;
-      llvm::sort(Blocks, [](const BlockIndexer::Block &L,
-                            const BlockIndexer::Block &R) {
-        return (L.WallclockTime->seconds() < R.WallclockTime->seconds() &&
-                L.WallclockTime->nanos() < R.WallclockTime->nanos());
-      });
-      auto Adder = [&](const XRayRecord &R) { Records.push_back(R); };
-      TraceExpander Expander(Adder, FileHeader.Version);
-      for (auto &B : Blocks) {
-        for (auto *R : B.Records)
-          if (auto E = R->apply(Expander))
-            return E;
-      }
-      if (auto E = Expander.flush())
-        return E;
-    }
-  }
-
-  return Error::success();
-}
-
-Error loadYAMLLog(StringRef Data, XRayFileHeader &FileHeader,
-                  std::vector<XRayRecord> &Records) {
-  YAMLXRayTrace Trace;
-  Input In(Data);
-  In >> Trace;
-  if (In.error())
-    return make_error<StringError>("Failed loading YAML Data.", In.error());
-
-  FileHeader.Version = Trace.Header.Version;
-  FileHeader.Type = Trace.Header.Type;
-  FileHeader.ConstantTSC = Trace.Header.ConstantTSC;
-  FileHeader.NonstopTSC = Trace.Header.NonstopTSC;
-  FileHeader.CycleFrequency = Trace.Header.CycleFrequency;
-
-  if (FileHeader.Version != 1)
-    return make_error<StringError>(
-        Twine("Unsupported XRay file version: ") + Twine(FileHeader.Version),
-        std::make_error_code(std::errc::invalid_argument));
-
-  Records.clear();
-  std::transform(Trace.Records.begin(), Trace.Records.end(),
-                 std::back_inserter(Records), [&](const YAMLXRayRecord &R) {
-                   return XRayRecord{R.RecordType, R.CPU,      R.Type,
-                                     R.FuncId,     R.TSC,      R.TId,
-                                     R.PId,        R.CallArgs, R.Data};
-                 });
-  return Error::success();
-}
-} // namespace
-
-Expected<Trace> llvm::xray::loadTraceFile(StringRef Filename, bool Sort) {
-  int Fd;
-  if (auto EC = sys::fs::openFileForRead(Filename, Fd)) {
-    return make_error<StringError>(
-        Twine("Cannot read log from '") + Filename + "'", EC);
-  }
-
-  uint64_t FileSize;
-  if (auto EC = sys::fs::file_size(Filename, FileSize)) {
-    return make_error<StringError>(
-        Twine("Cannot read log from '") + Filename + "'", EC);
-  }
-  if (FileSize < 4) {
-    return make_error<StringError>(
-        Twine("File '") + Filename + "' too small for XRay.",
-        std::make_error_code(std::errc::executable_format_error));
-  }
-
-  // Map the opened file into memory and use a StringRef to access it later.
-  std::error_code EC;
-  sys::fs::mapped_file_region MappedFile(
-      Fd, sys::fs::mapped_file_region::mapmode::readonly, FileSize, 0, EC);
-  if (EC) {
-    return make_error<StringError>(
-        Twine("Cannot read log from '") + Filename + "'", EC);
-  }
-  auto Data = StringRef(MappedFile.data(), MappedFile.size());
-
-  // TODO: Lift the endianness and implementation selection here.
-  DataExtractor LittleEndianDE(Data, true, 8);
-  auto TraceOrError = loadTrace(LittleEndianDE, Sort);
-  if (!TraceOrError) {
-    DataExtractor BigEndianDE(Data, false, 8);
-    TraceOrError = loadTrace(BigEndianDE, Sort);
-  }
-  return TraceOrError;
-}
-
-Expected<Trace> llvm::xray::loadTrace(const DataExtractor &DE, bool Sort) {
-  // Attempt to detect the file type using file magic. We have a slight bias
-  // towards the binary format, and we do this by making sure that the first 4
-  // bytes of the binary file is some combination of the following byte
-  // patterns: (observe the code loading them assumes they're little endian)
-  //
-  //   0x01 0x00 0x00 0x00 - version 1, "naive" format
-  //   0x01 0x00 0x01 0x00 - version 1, "flight data recorder" format
-  //   0x02 0x00 0x01 0x00 - version 2, "flight data recorder" format
-  //
-  // YAML files don't typically have those first four bytes as valid text so we
-  // try loading assuming YAML if we don't find these bytes.
-  //
-  // Only if we can't load either the binary or the YAML format will we yield an
-  // error.
-  DataExtractor HeaderExtractor(DE.getData(), DE.isLittleEndian(), 8);
-  uint32_t OffsetPtr = 0;
-  uint16_t Version = HeaderExtractor.getU16(&OffsetPtr);
-  uint16_t Type = HeaderExtractor.getU16(&OffsetPtr);
-
-  enum BinaryFormatType { NAIVE_FORMAT = 0, FLIGHT_DATA_RECORDER_FORMAT = 1 };
-
-  Trace T;
-  switch (Type) {
-  case NAIVE_FORMAT:
-    if (Version == 1 || Version == 2 || Version == 3) {
-      if (auto E = loadNaiveFormatLog(DE.getData(), DE.isLittleEndian(),
-                                      T.FileHeader, T.Records))
-        return std::move(E);
-    } else {
-      return make_error<StringError>(
-          Twine("Unsupported version for Basic/Naive Mode logging: ") +
-              Twine(Version),
-          std::make_error_code(std::errc::executable_format_error));
-    }
-    break;
-  case FLIGHT_DATA_RECORDER_FORMAT:
-    if (Version >= 1 && Version <= 5) {
-      if (auto E = loadFDRLog(DE.getData(), DE.isLittleEndian(), T.FileHeader,
-                              T.Records))
-        return std::move(E);
-    } else {
-      return make_error<StringError>(
-          Twine("Unsupported version for FDR Mode logging: ") + Twine(Version),
-          std::make_error_code(std::errc::executable_format_error));
-    }
-    break;
-  default:
-    if (auto E = loadYAMLLog(DE.getData(), T.FileHeader, T.Records))
-      return std::move(E);
-  }
-
-  if (Sort)
-    std::stable_sort(T.Records.begin(), T.Records.end(),
-                     [&](const XRayRecord &L, const XRayRecord &R) {
-                       return L.TSC < R.TSC;
-                     });
-
-  return std::move(T);
-}