1 //===-- MCTargetOptionsCommandFlags.cpp -----------------------*- C++ //-*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file contains machine code-specific flags that are shared between 10 // different command line tools. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/MC/MCTargetOptionsCommandFlags.h" 15 #include "llvm/MC/MCTargetOptions.h" 16 #include "llvm/Support/CommandLine.h" 17 18 using namespace llvm; 19 20 #define MCOPT(TY, NAME) \ 21 static cl::opt<TY> *NAME##View; \ 22 TY llvm::mc::get##NAME() { \ 23 assert(NAME##View && "RegisterMCTargetOptionsFlags not created."); \ 24 return *NAME##View; \ 25 } 26 27 #define MCOPT_EXP(TY, NAME) \ 28 MCOPT(TY, NAME) \ 29 Optional<TY> llvm::mc::getExplicit##NAME() { \ 30 if (NAME##View->getNumOccurrences()) { \ 31 TY res = *NAME##View; \ 32 return res; \ 33 } \ 34 return None; \ 35 } 36 37 MCOPT_EXP(bool, RelaxAll) 38 MCOPT(bool, IncrementalLinkerCompatible) 39 MCOPT(int, DwarfVersion) 40 MCOPT(bool, Dwarf64) 41 MCOPT(EmitDwarfUnwindType, EmitDwarfUnwind) 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<EmitDwarfUnwindType> EmitDwarfUnwind( 77 "emit-dwarf-unwind", cl::desc("Whether to emit DWARF EH frame entries."), 78 cl::init(EmitDwarfUnwindType::Default), 79 cl::values(clEnumValN(EmitDwarfUnwindType::Always, "always", 80 "Always emit EH frame entries"), 81 clEnumValN(EmitDwarfUnwindType::NoCompactUnwind, 82 "no-compact-unwind", 83 "Only emit EH frame entries when compact unwind is " 84 "not available"), 85 clEnumValN(EmitDwarfUnwindType::Default, "default", 86 "Use target platform default"))); 87 MCBINDOPT(EmitDwarfUnwind); 88 89 static cl::opt<bool> ShowMCInst( 90 "asm-show-inst", 91 cl::desc("Emit internal instruction representation to assembly file")); 92 MCBINDOPT(ShowMCInst); 93 94 static cl::opt<bool> FatalWarnings("fatal-warnings", 95 cl::desc("Treat warnings as errors")); 96 MCBINDOPT(FatalWarnings); 97 98 static cl::opt<bool> NoWarn("no-warn", cl::desc("Suppress all warnings")); 99 static cl::alias NoWarnW("W", cl::desc("Alias for --no-warn"), 100 cl::aliasopt(NoWarn)); 101 MCBINDOPT(NoWarn); 102 103 static cl::opt<bool> NoDeprecatedWarn( 104 "no-deprecated-warn", cl::desc("Suppress all deprecated warnings")); 105 MCBINDOPT(NoDeprecatedWarn); 106 107 static cl::opt<bool> NoTypeCheck( 108 "no-type-check", cl::desc("Suppress type errors (Wasm)")); 109 MCBINDOPT(NoTypeCheck); 110 111 static cl::opt<std::string> ABIName( 112 "target-abi", cl::Hidden, 113 cl::desc("The name of the ABI to be targeted from the backend."), 114 cl::init("")); 115 MCBINDOPT(ABIName); 116 117 #undef MCBINDOPT 118 } 119 120 MCTargetOptions llvm::mc::InitMCTargetOptionsFromFlags() { 121 MCTargetOptions Options; 122 Options.MCRelaxAll = getRelaxAll(); 123 Options.MCIncrementalLinkerCompatible = getIncrementalLinkerCompatible(); 124 Options.Dwarf64 = getDwarf64(); 125 Options.DwarfVersion = getDwarfVersion(); 126 Options.ShowMCInst = getShowMCInst(); 127 Options.ABIName = getABIName(); 128 Options.MCFatalWarnings = getFatalWarnings(); 129 Options.MCNoWarn = getNoWarn(); 130 Options.MCNoDeprecatedWarn = getNoDeprecatedWarn(); 131 Options.MCNoTypeCheck = getNoTypeCheck(); 132 Options.EmitDwarfUnwind = getEmitDwarfUnwind(); 133 134 return Options; 135 } 136