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📄 AArch64TargetParser.cpp(8 KB)
📄 ABIBreak.cpp(811 B)
📄 AMDGPUMetadata.cpp(9.37 KB)
📄 APFloat.cpp(155.26 KB)
📄 APInt.cpp(98.08 KB)
📄 APSInt.cpp(1.44 KB)
📄 ARMAttributeParser.cpp(13.94 KB)
📄 ARMBuildAttrs.cpp(3.45 KB)
📄 ARMTargetParser.cpp(18.09 KB)
📄 ARMWinEH.cpp(1.08 KB)
📄 Allocator.cpp(1.35 KB)
📄 Atomic.cpp(1.6 KB)
📄 BinaryStreamError.cpp(1.76 KB)
📄 BinaryStreamReader.cpp(5.24 KB)
📄 BinaryStreamRef.cpp(4.76 KB)
📄 BinaryStreamWriter.cpp(3.36 KB)
📄 BlockFrequency.cpp(2.12 KB)
📄 BranchProbability.cpp(3.44 KB)
📄 BuryPointer.cpp(1.11 KB)
📄 COM.cpp(737 B)
📄 COPYRIGHT.regex(2.65 KB)
📄 CRC.cpp(5.23 KB)
📄 CachePruning.cpp(10.33 KB)
📄 Chrono.cpp(3.17 KB)
📄 CodeGenCoverage.cpp(3.61 KB)
📄 CommandLine.cpp(89.06 KB)
📄 Compression.cpp(3.84 KB)
📄 ConvertUTF.cpp(27.27 KB)
📄 ConvertUTFWrapper.cpp(8.66 KB)
📄 CrashRecoveryContext.cpp(15.45 KB)
📄 DAGDeltaAlgorithm.cpp(12.47 KB)
📄 DJB.cpp(2.71 KB)
📄 DataExtractor.cpp(7.25 KB)
📄 Debug.cpp(5.64 KB)
📄 DebugCounter.cpp(4.95 KB)
📄 DeltaAlgorithm.cpp(3.41 KB)
📄 DynamicLibrary.cpp(6.25 KB)
📄 ELFAttributeParser.cpp(7.27 KB)
📄 ELFAttributes.cpp(1.27 KB)
📄 Errno.cpp(2.18 KB)
📄 Error.cpp(4.72 KB)
📄 ErrorHandling.cpp(11.08 KB)
📄 ExtensibleRTTI.cpp(446 B)
📄 FileCheck.cpp(95.77 KB)
📄 FileCheckImpl.h(34.14 KB)
📄 FileCollector.cpp(9.01 KB)
📄 FileOutputBuffer.cpp(6.62 KB)
📄 FileUtilities.cpp(10.81 KB)
📄 FoldingSet.cpp(15.89 KB)
📄 FormatVariadic.cpp(5.17 KB)
📄 FormattedStream.cpp(5.29 KB)
📄 GlobPattern.cpp(5 KB)
📄 GraphWriter.cpp(9.21 KB)
📄 Hashing.cpp(1.16 KB)
📄 Host.cpp(51.63 KB)
📄 InitLLVM.cpp(1.92 KB)
📄 IntEqClasses.cpp(2.18 KB)
📄 IntervalMap.cpp(4.4 KB)
📄 ItaniumManglingCanonicalizer.cpp(10.77 KB)
📄 JSON.cpp(19.1 KB)
📄 KnownBits.cpp(3.78 KB)
📄 LEB128.cpp(1.19 KB)
📄 LineIterator.cpp(2.61 KB)
📄 Locale.cpp(377 B)
📄 LockFileManager.cpp(10.64 KB)
📄 LowLevelType.cpp(2.09 KB)
📄 MD5.cpp(8.99 KB)
📄 ManagedStatic.cpp(2.37 KB)
📄 MathExtras.cpp(913 B)
📄 MemAlloc.cpp(1.01 KB)
📄 Memory.cpp(1.57 KB)
📄 MemoryBuffer.cpp(18.99 KB)
📄 NativeFormatting.cpp(7.54 KB)
📄 OptimizedStructLayout.cpp(16.7 KB)
📄 Optional.cpp(530 B)
📄 Parallel.cpp(5.08 KB)
📄 Path.cpp(36.52 KB)
📄 PluginLoader.cpp(1.63 KB)
📄 PrettyStackTrace.cpp(10.33 KB)
📄 Process.cpp(3.27 KB)
📄 Program.cpp(3.54 KB)
📄 RISCVAttributeParser.cpp(2.06 KB)
📄 RISCVAttributes.cpp(970 B)
📄 RWMutex.cpp(3.23 KB)
📄 RandomNumberGenerator.cpp(2.86 KB)
📄 Regex.cpp(6.38 KB)
📄 SHA1.cpp(10.43 KB)
📄 ScaledNumber.cpp(9.09 KB)
📄 ScopedPrinter.cpp(1.19 KB)
📄 Signals.cpp(8.35 KB)
📄 Signposts.cpp(3.24 KB)
📄 SmallPtrSet.cpp(9.21 KB)
📄 SmallVector.cpp(3.99 KB)
📄 SourceMgr.cpp(20.08 KB)
📄 SpecialCaseList.cpp(7.48 KB)
📄 Statistic.cpp(8.85 KB)
📄 StringExtras.cpp(4.34 KB)
📄 StringMap.cpp(9.31 KB)
📄 StringRef.cpp(17.41 KB)
📄 StringSaver.cpp(882 B)
📄 SuffixTree.cpp(7.23 KB)
📄 SymbolRemappingReader.cpp(2.94 KB)
📄 SystemUtils.cpp(1.06 KB)
📄 TarWriter.cpp(7.23 KB)
📄 TargetParser.cpp(9.86 KB)
📄 TargetRegistry.cpp(4.6 KB)
📄 ThreadLocal.cpp(1.68 KB)
📄 ThreadPool.cpp(4.4 KB)
📄 Threading.cpp(4.55 KB)
📄 TimeProfiler.cpp(11.63 KB)
📄 Timer.cpp(14.14 KB)
📄 ToolOutputFile.cpp(1.83 KB)
📄 TrigramIndex.cpp(3.24 KB)
📄 Triple.cpp(53.17 KB)
📄 Twine.cpp(4.6 KB)
📄 Unicode.cpp(20.14 KB)
📄 UnicodeCaseFold.cpp(15.32 KB)
📁 Unix
📄 Valgrind.cpp(1.6 KB)
📄 VersionTuple.cpp(2.74 KB)
📄 VirtualFileSystem.cpp(74.17 KB)
📄 Watchdog.cpp(738 B)
📁 Windows
📄 WithColor.cpp(4.35 KB)
📄 X86TargetParser.cpp(27.21 KB)
📄 YAMLParser.cpp(68.53 KB)
📄 YAMLTraits.cpp(28.37 KB)
📄 Z3Solver.cpp(31.44 KB)
📄 circular_raw_ostream.cpp(1.3 KB)
📄 raw_os_ostream.cpp(995 B)
📄 raw_ostream.cpp(28.97 KB)
📄 regcomp.c(39.42 KB)
📄 regengine.inc(26.49 KB)
📄 regerror.c(4.42 KB)
📄 regex2.h(6.82 KB)
📄 regex_impl.h(3.63 KB)
📄 regexec.c(5.71 KB)
📄 regfree.c(2.49 KB)
📄 regstrlcpy.c(1.56 KB)
📄 regutils.h(2.25 KB)
📄 xxhash.cpp(4.07 KB)

Editing: NativeFormatting.cpp

//===- NativeFormatting.cpp - Low level formatting helpers -------*- C++-*-===//
//
// 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
//
//===----------------------------------------------------------------------===//

#include "llvm/Support/NativeFormatting.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/raw_ostream.h"
#include <float.h>

using namespace llvm;

template<typename T, std::size_t N>
static int format_to_buffer(T Value, char (&Buffer)[N]) {
  char *EndPtr = std::end(Buffer);
  char *CurPtr = EndPtr;

do {
    *--CurPtr = '0' + char(Value % 10);
    Value /= 10;
  } while (Value);
  return EndPtr - CurPtr;
}

static void writeWithCommas(raw_ostream &S, ArrayRef<char> Buffer) {
  assert(!Buffer.empty());

ArrayRef<char> ThisGroup;
  int InitialDigits = ((Buffer.size() - 1) % 3) + 1;
  ThisGroup = Buffer.take_front(InitialDigits);
  S.write(ThisGroup.data(), ThisGroup.size());

Buffer = Buffer.drop_front(InitialDigits);
  assert(Buffer.size() % 3 == 0);
  while (!Buffer.empty()) {
    S << ',';
    ThisGroup = Buffer.take_front(3);
    S.write(ThisGroup.data(), 3);
    Buffer = Buffer.drop_front(3);
  }
}

template <typename T>
static void write_unsigned_impl(raw_ostream &S, T N, size_t MinDigits,
                                IntegerStyle Style, bool IsNegative) {
  static_assert(std::is_unsigned<T>::value, "Value is not unsigned!");

char NumberBuffer[128];
  std::memset(NumberBuffer, '0', sizeof(NumberBuffer));

size_t Len = 0;
  Len = format_to_buffer(N, NumberBuffer);

if (IsNegative)
    S << '-';

if (Len < MinDigits && Style != IntegerStyle::Number) {
    for (size_t I = Len; I < MinDigits; ++I)
      S << '0';
  }

if (Style == IntegerStyle::Number) {
    writeWithCommas(S, ArrayRef<char>(std::end(NumberBuffer) - Len, Len));
  } else {
    S.write(std::end(NumberBuffer) - Len, Len);
  }
}

template <typename T>
static void write_unsigned(raw_ostream &S, T N, size_t MinDigits,
                           IntegerStyle Style, bool IsNegative = false) {
  // Output using 32-bit div/mod if possible.
  if (N == static_cast<uint32_t>(N))
    write_unsigned_impl(S, static_cast<uint32_t>(N), MinDigits, Style,
                        IsNegative);
  else
    write_unsigned_impl(S, N, MinDigits, Style, IsNegative);
}

template <typename T>
static void write_signed(raw_ostream &S, T N, size_t MinDigits,
                         IntegerStyle Style) {
  static_assert(std::is_signed<T>::value, "Value is not signed!");

using UnsignedT = std::make_unsigned_t<T>;

if (N >= 0) {
    write_unsigned(S, static_cast<UnsignedT>(N), MinDigits, Style);
    return;
  }

UnsignedT UN = -(UnsignedT)N;
  write_unsigned(S, UN, MinDigits, Style, true);
}

void llvm::write_integer(raw_ostream &S, unsigned int N, size_t MinDigits,
                         IntegerStyle Style) {
  write_unsigned(S, N, MinDigits, Style);
}

void llvm::write_integer(raw_ostream &S, int N, size_t MinDigits,
                         IntegerStyle Style) {
  write_signed(S, N, MinDigits, Style);
}

void llvm::write_integer(raw_ostream &S, unsigned long N, size_t MinDigits,
                         IntegerStyle Style) {
  write_unsigned(S, N, MinDigits, Style);
}

void llvm::write_integer(raw_ostream &S, long N, size_t MinDigits,
                         IntegerStyle Style) {
  write_signed(S, N, MinDigits, Style);
}

void llvm::write_integer(raw_ostream &S, unsigned long long N, size_t MinDigits,
                         IntegerStyle Style) {
  write_unsigned(S, N, MinDigits, Style);
}

void llvm::write_integer(raw_ostream &S, long long N, size_t MinDigits,
                         IntegerStyle Style) {
  write_signed(S, N, MinDigits, Style);
}

void llvm::write_hex(raw_ostream &S, uint64_t N, HexPrintStyle Style,
                     Optional<size_t> Width) {
  const size_t kMaxWidth = 128u;

size_t W = std::min(kMaxWidth, Width.getValueOr(0u));

unsigned Nibbles = (64 - countLeadingZeros(N) + 3) / 4;
  bool Prefix = (Style == HexPrintStyle::PrefixLower ||
                 Style == HexPrintStyle::PrefixUpper);
  bool Upper =
      (Style == HexPrintStyle::Upper || Style == HexPrintStyle::PrefixUpper);
  unsigned PrefixChars = Prefix ? 2 : 0;
  unsigned NumChars =
      std::max(static_cast<unsigned>(W), std::max(1u, Nibbles) + PrefixChars);

char NumberBuffer[kMaxWidth];
  ::memset(NumberBuffer, '0', llvm::array_lengthof(NumberBuffer));
  if (Prefix)
    NumberBuffer[1] = 'x';
  char *EndPtr = NumberBuffer + NumChars;
  char *CurPtr = EndPtr;
  while (N) {
    unsigned char x = static_cast<unsigned char>(N) % 16;
    *--CurPtr = hexdigit(x, !Upper);
    N /= 16;
  }

S.write(NumberBuffer, NumChars);
}

void llvm::write_double(raw_ostream &S, double N, FloatStyle Style,
                        Optional<size_t> Precision) {
  size_t Prec = Precision.getValueOr(getDefaultPrecision(Style));

if (std::isnan(N)) {
    S << "nan";
    return;
  } else if (std::isinf(N)) {
    S << "INF";
    return;
  }

char Letter;
  if (Style == FloatStyle::Exponent)
    Letter = 'e';
  else if (Style == FloatStyle::ExponentUpper)
    Letter = 'E';
  else
    Letter = 'f';

SmallString<8> Spec;
  llvm::raw_svector_ostream Out(Spec);
  Out << "%." << Prec << Letter;

if (Style == FloatStyle::Exponent || Style == FloatStyle::ExponentUpper) {
#ifdef _WIN32
// On MSVCRT and compatible, output of %e is incompatible to Posix
// by default. Number of exponent digits should be at least 2. "%+03d"
// FIXME: Implement our formatter to here or Support/Format.h!
#if defined(__MINGW32__)
    // FIXME: It should be generic to C++11.
    if (N == 0.0 && std::signbit(N)) {
      char NegativeZero[] = "-0.000000e+00";
      if (Style == FloatStyle::ExponentUpper)
        NegativeZero[strlen(NegativeZero) - 4] = 'E';
      S << NegativeZero;
      return;
    }
#else
    int fpcl = _fpclass(N);

// negative zero
    if (fpcl == _FPCLASS_NZ) {
      char NegativeZero[] = "-0.000000e+00";
      if (Style == FloatStyle::ExponentUpper)
        NegativeZero[strlen(NegativeZero) - 4] = 'E';
      S << NegativeZero;
      return;
    }
#endif

char buf[32];
    unsigned len;
    len = format(Spec.c_str(), N).snprint(buf, sizeof(buf));
    if (len <= sizeof(buf) - 2) {
      if (len >= 5 && (buf[len - 5] == 'e' || buf[len - 5] == 'E') &&
          buf[len - 3] == '0') {
        int cs = buf[len - 4];
        if (cs == '+' || cs == '-') {
          int c1 = buf[len - 2];
          int c0 = buf[len - 1];
          if (isdigit(static_cast<unsigned char>(c1)) &&
              isdigit(static_cast<unsigned char>(c0))) {
            // Trim leading '0': "...e+012" -> "...e+12\0"
            buf[len - 3] = c1;
            buf[len - 2] = c0;
            buf[--len] = 0;
          }
        }
      }
      S << buf;
      return;
    }
#endif
  }

if (Style == FloatStyle::Percent)
    N *= 100.0;

char Buf[32];
  format(Spec.c_str(), N).snprint(Buf, sizeof(Buf));
  S << Buf;
  if (Style == FloatStyle::Percent)
    S << '%';
}

bool llvm::isPrefixedHexStyle(HexPrintStyle S) {
  return (S == HexPrintStyle::PrefixLower || S == HexPrintStyle::PrefixUpper);
}

size_t llvm::getDefaultPrecision(FloatStyle Style) {
  switch (Style) {
  case FloatStyle::Exponent:
  case FloatStyle::ExponentUpper:
    return 6; // Number of decimal places.
  case FloatStyle::Fixed:
  case FloatStyle::Percent:
    return 2; // Number of decimal places.
  }
  LLVM_BUILTIN_UNREACHABLE;
}

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Editing: NativeFormatting.cpp

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