llvm/lib/MC/MCTargetOptionsCommandFlags.cpp

   1 //===-- MCTargetOptionsCommandFlags.cpp --------------------------*- C++
   2 //-*-===//
   3 //
   4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   5 // See https://llvm.org/LICENSE.txt for license information.
   6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file contains machine code-specific flags that are shared between
  11 // different command line tools.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "llvm/MC/MCTargetOptionsCommandFlags.h"
  16 #include "llvm/MC/MCTargetOptions.h"
  17 #include "llvm/Support/CommandLine.h"
  18
  19 using namespace llvm;
  20
  21 #define MCOPT(TY, NAME)                                                        \
  22   static cl::opt<TY> *NAME##View;                                              \
  23   TY llvm::mc::get##NAME() {                                                   \
  24     assert(NAME##View && "RegisterMCTargetOptionsFlags not created.");         \
  25     return *NAME##View;                                                        \
  26   }
  27
  28 #define MCOPT_EXP(TY, NAME)                                                    \
  29   MCOPT(TY, NAME)                                                              \
  30   Optional<TY> llvm::mc::getExplicit##NAME() {                                 \
  31     if (NAME##View->getNumOccurrences()) {                                     \
  32       TY res = *NAME##View;                                                    \
  33       return res;                                                              \
  34     }                                                                          \
  35     return None;                                                               \
  36   }
  37
  38 MCOPT_EXP(bool, RelaxAll)
  39 MCOPT(bool, IncrementalLinkerCompatible)
  40 MCOPT(int, DwarfVersion)
  41 MCOPT(bool, Dwarf64)
  42 MCOPT(bool, ShowMCInst)
  43 MCOPT(bool, FatalWarnings)
  44 MCOPT(bool, NoWarn)
  45 MCOPT(bool, NoDeprecatedWarn)
  46 MCOPT(bool, NoTypeCheck)
  47 MCOPT(std::string, ABIName)
  48
  49 llvm::mc::RegisterMCTargetOptionsFlags::RegisterMCTargetOptionsFlags() {
  50 #define MCBINDOPT(NAME)                                                        \
  51   do {                                                                         \
  52     NAME##View = std::addressof(NAME);                                         \
  53   } while (0)
  54
  55   static cl::opt<bool> RelaxAll(
  56       "mc-relax-all", cl::desc("When used with filetype=obj, relax all fixups "
  57                                "in the emitted object file"));
  58   MCBINDOPT(RelaxAll);
  59
  60   static cl::opt<bool> IncrementalLinkerCompatible(
  61       "incremental-linker-compatible",
  62       cl::desc(
  63           "When used with filetype=obj, "
  64           "emit an object file which can be used with an incremental linker"));
  65   MCBINDOPT(IncrementalLinkerCompatible);
  66
  67   static cl::opt<int> DwarfVersion("dwarf-version", cl::desc("Dwarf version"),
  68                                    cl::init(0));
  69   MCBINDOPT(DwarfVersion);
  70
  71   static cl::opt<bool> Dwarf64(
  72       "dwarf64",
  73       cl::desc("Generate debugging info in the 64-bit DWARF format"));
  74   MCBINDOPT(Dwarf64);
  75
  76   static cl::opt<bool> ShowMCInst(
  77       "asm-show-inst",
  78       cl::desc("Emit internal instruction representation to assembly file"));
  79   MCBINDOPT(ShowMCInst);
  80
  81   static cl::opt<bool> FatalWarnings("fatal-warnings",
  82                                      cl::desc("Treat warnings as errors"));
  83   MCBINDOPT(FatalWarnings);
  84
  85   static cl::opt<bool> NoWarn("no-warn", cl::desc("Suppress all warnings"));
  86   static cl::alias NoWarnW("W", cl::desc("Alias for --no-warn"),
  87                            cl::aliasopt(NoWarn));
  88   MCBINDOPT(NoWarn);
  89
  90   static cl::opt<bool> NoDeprecatedWarn(
  91       "no-deprecated-warn", cl::desc("Suppress all deprecated warnings"));
  92   MCBINDOPT(NoDeprecatedWarn);
  93
  94   static cl::opt<bool> NoTypeCheck(
  95       "no-type-check", cl::desc("Suppress type errors (Wasm)"));
  96   MCBINDOPT(NoTypeCheck);
  97
  98   static cl::opt<std::string> ABIName(
  99       "target-abi", cl::Hidden,
 100       cl::desc("The name of the ABI to be targeted from the backend."),
 101       cl::init(""));
 102   MCBINDOPT(ABIName);
 103
 104 #undef MCBINDOPT
 105 }
 106
 107 MCTargetOptions llvm::mc::InitMCTargetOptionsFromFlags() {
 108   MCTargetOptions Options;
 109   Options.MCRelaxAll = getRelaxAll();
 110   Options.MCIncrementalLinkerCompatible = getIncrementalLinkerCompatible();
 111   Options.Dwarf64 = getDwarf64();
 112   Options.DwarfVersion = getDwarfVersion();
 113   Options.ShowMCInst = getShowMCInst();
 114   Options.ABIName = getABIName();
 115   Options.MCFatalWarnings = getFatalWarnings();
 116   Options.MCNoWarn = getNoWarn();
 117   Options.MCNoDeprecatedWarn = getNoDeprecatedWarn();
 118   Options.MCNoTypeCheck = getNoTypeCheck();
 119   return Options;
 120 }