1 files changed, 0 insertions, 266 deletions

diff --git a/contrib/llvm/lib/Support/FileUtilities.cpp b/contrib/llvm/lib/Support/FileUtilities.cpp
deleted file mode 100644
index 62eb7bfda195..000000000000
--- a/contrib/llvm/lib/Support/FileUtilities.cpp
+++ /dev/null
@@ -1,266 +0,0 @@
-//===- Support/FileUtilities.cpp - File System Utilities ------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements a family of utility functions which are useful for doing
-// various things with files.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Support/FileUtilities.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/Support/ErrorOr.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/raw_ostream.h"
-#include <cctype>
-#include <cmath>
-#include <cstdint>
-#include <cstdlib>
-#include <cstring>
-#include <memory>
-#include <system_error>
-
-using namespace llvm;
-
-static bool isSignedChar(char C) {
-  return (C == '+' || C == '-');
-}
-
-static bool isExponentChar(char C) {
-  switch (C) {
-  case 'D':  // Strange exponential notation.
-  case 'd':  // Strange exponential notation.
-  case 'e':
-  case 'E': return true;
-  default: return false;
-  }
-}
-
-static bool isNumberChar(char C) {
-  switch (C) {
-  case '0': case '1': case '2': case '3': case '4':
-  case '5': case '6': case '7': case '8': case '9':
-  case '.': return true;
-  default: return isSignedChar(C) || isExponentChar(C);
-  }
-}
-
-static const char *BackupNumber(const char *Pos, const char *FirstChar) {
-  // If we didn't stop in the middle of a number, don't backup.
-  if (!isNumberChar(*Pos)) return Pos;
-
-  // Otherwise, return to the start of the number.
-  bool HasPeriod = false;
-  while (Pos > FirstChar && isNumberChar(Pos[-1])) {
-    // Backup over at most one period.
-    if (Pos[-1] == '.') {
-      if (HasPeriod)
-        break;
-      HasPeriod = true;
-    }
-
-    --Pos;
-    if (Pos > FirstChar && isSignedChar(Pos[0]) && !isExponentChar(Pos[-1]))
-      break;
-  }
-  return Pos;
-}
-
-/// EndOfNumber - Return the first character that is not part of the specified
-/// number.  This assumes that the buffer is null terminated, so it won't fall
-/// off the end.
-static const char *EndOfNumber(const char *Pos) {
-  while (isNumberChar(*Pos))
-    ++Pos;
-  return Pos;
-}
-
-/// CompareNumbers - compare two numbers, returning true if they are different.
-static bool CompareNumbers(const char *&F1P, const char *&F2P,
-                           const char *F1End, const char *F2End,
-                           double AbsTolerance, double RelTolerance,
-                           std::string *ErrorMsg) {
-  const char *F1NumEnd, *F2NumEnd;
-  double V1 = 0.0, V2 = 0.0;
-
-  // If one of the positions is at a space and the other isn't, chomp up 'til
-  // the end of the space.
-  while (isspace(static_cast<unsigned char>(*F1P)) && F1P != F1End)
-    ++F1P;
-  while (isspace(static_cast<unsigned char>(*F2P)) && F2P != F2End)
-    ++F2P;
-
-  // If we stop on numbers, compare their difference.
-  if (!isNumberChar(*F1P) || !isNumberChar(*F2P)) {
-    // The diff failed.
-    F1NumEnd = F1P;
-    F2NumEnd = F2P;
-  } else {
-    // Note that some ugliness is built into this to permit support for numbers
-    // that use "D" or "d" as their exponential marker, e.g. "1.234D45".  This
-    // occurs in 200.sixtrack in spec2k.
-    V1 = strtod(F1P, const_cast<char**>(&F1NumEnd));
-    V2 = strtod(F2P, const_cast<char**>(&F2NumEnd));
-
-    if (*F1NumEnd == 'D' || *F1NumEnd == 'd') {
-      // Copy string into tmp buffer to replace the 'D' with an 'e'.
-      SmallString<200> StrTmp(F1P, EndOfNumber(F1NumEnd)+1);
-      // Strange exponential notation!
-      StrTmp[static_cast<unsigned>(F1NumEnd-F1P)] = 'e';
-
-      V1 = strtod(&StrTmp[0], const_cast<char**>(&F1NumEnd));
-      F1NumEnd = F1P + (F1NumEnd-&StrTmp[0]);
-    }
-
-    if (*F2NumEnd == 'D' || *F2NumEnd == 'd') {
-      // Copy string into tmp buffer to replace the 'D' with an 'e'.
-      SmallString<200> StrTmp(F2P, EndOfNumber(F2NumEnd)+1);
-      // Strange exponential notation!
-      StrTmp[static_cast<unsigned>(F2NumEnd-F2P)] = 'e';
-
-      V2 = strtod(&StrTmp[0], const_cast<char**>(&F2NumEnd));
-      F2NumEnd = F2P + (F2NumEnd-&StrTmp[0]);
-    }
-  }
-
-  if (F1NumEnd == F1P || F2NumEnd == F2P) {
-    if (ErrorMsg) {
-      *ErrorMsg = "FP Comparison failed, not a numeric difference between '";
-      *ErrorMsg += F1P[0];
-      *ErrorMsg += "' and '";
-      *ErrorMsg += F2P[0];
-      *ErrorMsg += "'";
-    }
-    return true;
-  }
-
-  // Check to see if these are inside the absolute tolerance
-  if (AbsTolerance < std::abs(V1-V2)) {
-    // Nope, check the relative tolerance...
-    double Diff;
-    if (V2)
-      Diff = std::abs(V1/V2 - 1.0);
-    else if (V1)
-      Diff = std::abs(V2/V1 - 1.0);
-    else
-      Diff = 0;  // Both zero.
-    if (Diff > RelTolerance) {
-      if (ErrorMsg) {
-        raw_string_ostream(*ErrorMsg)
-          << "Compared: " << V1 << " and " << V2 << '\n'
-          << "abs. diff = " << std::abs(V1-V2) << " rel.diff = " << Diff << '\n'
-          << "Out of tolerance: rel/abs: " << RelTolerance << '/'
-          << AbsTolerance;
-      }
-      return true;
-    }
-  }
-
-  // Otherwise, advance our read pointers to the end of the numbers.
-  F1P = F1NumEnd;  F2P = F2NumEnd;
-  return false;
-}
-
-/// DiffFilesWithTolerance - Compare the two files specified, returning 0 if the
-/// files match, 1 if they are different, and 2 if there is a file error.  This
-/// function differs from DiffFiles in that you can specify an absolete and
-/// relative FP error that is allowed to exist.  If you specify a string to fill
-/// in for the error option, it will set the string to an error message if an
-/// error occurs, allowing the caller to distinguish between a failed diff and a
-/// file system error.
-///
-int llvm::DiffFilesWithTolerance(StringRef NameA,
-                                 StringRef NameB,
-                                 double AbsTol, double RelTol,
-                                 std::string *Error) {
-  // Now its safe to mmap the files into memory because both files
-  // have a non-zero size.
-  ErrorOr<std::unique_ptr<MemoryBuffer>> F1OrErr = MemoryBuffer::getFile(NameA);
-  if (std::error_code EC = F1OrErr.getError()) {
-    if (Error)
-      *Error = EC.message();
-    return 2;
-  }
-  MemoryBuffer &F1 = *F1OrErr.get();
-
-  ErrorOr<std::unique_ptr<MemoryBuffer>> F2OrErr = MemoryBuffer::getFile(NameB);
-  if (std::error_code EC = F2OrErr.getError()) {
-    if (Error)
-      *Error = EC.message();
-    return 2;
-  }
-  MemoryBuffer &F2 = *F2OrErr.get();
-
-  // Okay, now that we opened the files, scan them for the first difference.
-  const char *File1Start = F1.getBufferStart();
-  const char *File2Start = F2.getBufferStart();
-  const char *File1End = F1.getBufferEnd();
-  const char *File2End = F2.getBufferEnd();
-  const char *F1P = File1Start;
-  const char *F2P = File2Start;
-  uint64_t A_size = F1.getBufferSize();
-  uint64_t B_size = F2.getBufferSize();
-
-  // Are the buffers identical?  Common case: Handle this efficiently.
-  if (A_size == B_size &&
-      std::memcmp(File1Start, File2Start, A_size) == 0)
-    return 0;
-
-  // Otherwise, we are done a tolerances are set.
-  if (AbsTol == 0 && RelTol == 0) {
-    if (Error)
-      *Error = "Files differ without tolerance allowance";
-    return 1;   // Files different!
-  }
-
-  bool CompareFailed = false;
-  while (true) {
-    // Scan for the end of file or next difference.
-    while (F1P < File1End && F2P < File2End && *F1P == *F2P) {
-      ++F1P;
-      ++F2P;
-    }
-
-    if (F1P >= File1End || F2P >= File2End) break;
-
-    // Okay, we must have found a difference.  Backup to the start of the
-    // current number each stream is at so that we can compare from the
-    // beginning.
-    F1P = BackupNumber(F1P, File1Start);
-    F2P = BackupNumber(F2P, File2Start);
-
-    // Now that we are at the start of the numbers, compare them, exiting if
-    // they don't match.
-    if (CompareNumbers(F1P, F2P, File1End, File2End, AbsTol, RelTol, Error)) {
-      CompareFailed = true;
-      break;
-    }
-  }
-
-  // Okay, we reached the end of file.  If both files are at the end, we
-  // succeeded.
-  bool F1AtEnd = F1P >= File1End;
-  bool F2AtEnd = F2P >= File2End;
-  if (!CompareFailed && (!F1AtEnd || !F2AtEnd)) {
-    // Else, we might have run off the end due to a number: backup and retry.
-    if (F1AtEnd && isNumberChar(F1P[-1])) --F1P;
-    if (F2AtEnd && isNumberChar(F2P[-1])) --F2P;
-    F1P = BackupNumber(F1P, File1Start);
-    F2P = BackupNumber(F2P, File2Start);
-
-    // Now that we are at the start of the numbers, compare them, exiting if
-    // they don't match.
-    if (CompareNumbers(F1P, F2P, File1End, File2End, AbsTol, RelTol, Error))
-      CompareFailed = true;
-
-    // If we found the end, we succeeded.
-    if (F1P < File1End || F2P < File2End)
-      CompareFailed = true;
-  }
-
-  return CompareFailed;
-}