1 files changed, 0 insertions, 149 deletions
diff --git a/lib/ReaderWriter/ELF/Mips/MipsELFFlagsMerger.cpp b/lib/ReaderWriter/ELF/Mips/MipsELFFlagsMerger.cpp
deleted file mode 100644
index 0ef2c70b8156..000000000000
--- a/lib/ReaderWriter/ELF/Mips/MipsELFFlagsMerger.cpp
+++ /dev/null
@@ -1,149 +0,0 @@
-//===- lib/ReaderWriter/ELF/MipsELFFlagsMerger.cpp ------------------------===//
-//
-//                             The LLVM Linker
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "MipsELFFlagsMerger.h"
-#include "lld/Core/Error.h"
-#include "llvm/ADT/Twine.h"
-#include "llvm/Support/ELF.h"
-#include "llvm/Support/raw_ostream.h"
-
-using namespace lld;
-using namespace lld::elf;
-using namespace llvm::ELF;
-
-struct MipsISATreeEdge {
-  unsigned child;
-  unsigned parent;
-};
-
-static MipsISATreeEdge isaTree[] = {
-    // MIPS32R6 and MIPS64R6 are not compatible with other extensions
-
-    // MIPS64 extensions.
-    {EF_MIPS_ARCH_64R2, EF_MIPS_ARCH_64},
-    // MIPS V extensions.
-    {EF_MIPS_ARCH_64, EF_MIPS_ARCH_5},
-    // MIPS IV extensions.
-    {EF_MIPS_ARCH_5, EF_MIPS_ARCH_4},
-    // MIPS III extensions.
-    {EF_MIPS_ARCH_4, EF_MIPS_ARCH_3},
-    // MIPS32 extensions.
-    {EF_MIPS_ARCH_32R2, EF_MIPS_ARCH_32},
-    // MIPS II extensions.
-    {EF_MIPS_ARCH_3, EF_MIPS_ARCH_2},
-    {EF_MIPS_ARCH_32, EF_MIPS_ARCH_2},
-    // MIPS I extensions.
-    {EF_MIPS_ARCH_2, EF_MIPS_ARCH_1},
-};
-
-static bool matchMipsISA(unsigned base, unsigned ext) {
-  if (base == ext)
-    return true;
-  if (base == EF_MIPS_ARCH_32 && matchMipsISA(EF_MIPS_ARCH_64, ext))
-    return true;
-  if (base == EF_MIPS_ARCH_32R2 && matchMipsISA(EF_MIPS_ARCH_64R2, ext))
-    return true;
-  for (const auto &edge : isaTree) {
-    if (ext == edge.child) {
-      ext = edge.parent;
-      if (ext == base)
-        return true;
-    }
-  }
-  return false;
-}
-
-MipsELFFlagsMerger::MipsELFFlagsMerger(bool is64Bits)
-    : _is64Bit(is64Bits), _flags(0) {}
-
-uint32_t MipsELFFlagsMerger::getMergedELFFlags() const { return _flags; }
-
-std::error_code MipsELFFlagsMerger::merge(uint8_t newClass, uint32_t newFlags) {
-  // Check bitness.
-  if (_is64Bit != (newClass == ELFCLASS64))
-    return make_dynamic_error_code(
-        Twine("Bitness is incompatible with that of the selected target"));
-
-  // We support two ABI: O32 and N64. The last one does not have
-  // the corresponding ELF flag.
-  uint32_t inAbi = newFlags & EF_MIPS_ABI;
-  uint32_t supportedAbi = _is64Bit ? 0 : uint32_t(EF_MIPS_ABI_O32);
-  if (inAbi != supportedAbi)
-    return make_dynamic_error_code(Twine("Unsupported ABI"));
-
-  // ... and reduced set of architectures ...
-  uint32_t newArch = newFlags & EF_MIPS_ARCH;
-  switch (newArch) {
-  case EF_MIPS_ARCH_1:
-  case EF_MIPS_ARCH_2:
-  case EF_MIPS_ARCH_3:
-  case EF_MIPS_ARCH_4:
-  case EF_MIPS_ARCH_5:
-  case EF_MIPS_ARCH_32:
-  case EF_MIPS_ARCH_64:
-  case EF_MIPS_ARCH_32R2:
-  case EF_MIPS_ARCH_64R2:
-  case EF_MIPS_ARCH_32R6:
-  case EF_MIPS_ARCH_64R6:
-    break;
-  default:
-    return make_dynamic_error_code(Twine("Unsupported instruction set"));
-  }
-
-  // ... and still do not support MIPS-16 extension.
-  if (newFlags & EF_MIPS_ARCH_ASE_M16)
-    return make_dynamic_error_code(Twine("Unsupported extension: MIPS16"));
-
-  // PIC code is inherently CPIC and may not set CPIC flag explicitly.
-  // Ensure that this flag will exist in the linked file.
-  if (newFlags & EF_MIPS_PIC)
-    newFlags |= EF_MIPS_CPIC;
-
-  std::lock_guard<std::mutex> lock(_mutex);
-
-  // If the old set of flags is empty, use the new one as a result.
-  if (!_flags) {
-    _flags = newFlags;
-    return std::error_code();
-  }
-
-  // Check PIC / CPIC flags compatibility.
-  uint32_t newPic = newFlags & (EF_MIPS_PIC | EF_MIPS_CPIC);
-  uint32_t oldPic = _flags & (EF_MIPS_PIC | EF_MIPS_CPIC);
-
-  if ((newPic != 0) != (oldPic != 0))
-    llvm::errs() << "lld warning: linking abicalls and non-abicalls files\n";
-
-  if (!(newPic & EF_MIPS_PIC))
-    _flags &= ~EF_MIPS_PIC;
-  if (newPic)
-    _flags |= EF_MIPS_CPIC;
-
-  // Check mixing -mnan=2008 / -mnan=legacy modules.
-  if ((newFlags & EF_MIPS_NAN2008) != (_flags & EF_MIPS_NAN2008))
-    return make_dynamic_error_code(
-        Twine("Linking -mnan=2008 and -mnan=legacy modules"));
-
-  // Check ISA compatibility and update the extension flag.
-  uint32_t oldArch = _flags & EF_MIPS_ARCH;
-  if (!matchMipsISA(newArch, oldArch)) {
-    if (!matchMipsISA(oldArch, newArch))
-      return make_dynamic_error_code(
-          Twine("Linking modules with incompatible ISA"));
-    _flags &= ~EF_MIPS_ARCH;
-    _flags |= newArch;
-  }
-
-  _flags |= newFlags & EF_MIPS_NOREORDER;
-  _flags |= newFlags & EF_MIPS_MICROMIPS;
-  _flags |= newFlags & EF_MIPS_NAN2008;
-  _flags |= newFlags & EF_MIPS_32BITMODE;
-
-  return std::error_code();
-}