contrib/llvm/include/llvm/CodeGen/CommandFlags.h

   1 //===-- CommandFlags.h - Command Line Flags Interface -----------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file contains codegen-specific flags that are shared between different
  11 // command line tools. The tools "llc" and "opt" both use this file to prevent
  12 // flag duplication.
  13 //
  14 //===----------------------------------------------------------------------===//
  15
  16 #ifndef LLVM_CODEGEN_COMMANDFLAGS_H
  17 #define LLVM_CODEGEN_COMMANDFLAGS_H
  18
  19 #include "llvm/Support/CodeGen.h"
  20 #include "llvm/Support/CommandLine.h"
  21 #include "llvm/Target/TargetMachine.h"
  22 #include <string>
  23 using namespace llvm;
  24
  25 cl::opt<std::string>
  26 MArch("march", cl::desc("Architecture to generate code for (see --version)"));
  27
  28 cl::opt<std::string>
  29 MCPU("mcpu",
  30      cl::desc("Target a specific cpu type (-mcpu=help for details)"),
  31      cl::value_desc("cpu-name"),
  32      cl::init(""));
  33
  34 cl::list<std::string>
  35 MAttrs("mattr",
  36        cl::CommaSeparated,
  37        cl::desc("Target specific attributes (-mattr=help for details)"),
  38        cl::value_desc("a1,+a2,-a3,..."));
  39
  40 cl::opt<Reloc::Model>
  41 RelocModel("relocation-model",
  42            cl::desc("Choose relocation model"),
  43            cl::init(Reloc::Default),
  44            cl::values(
  45               clEnumValN(Reloc::Default, "default",
  46                       "Target default relocation model"),
  47               clEnumValN(Reloc::Static, "static",
  48                       "Non-relocatable code"),
  49               clEnumValN(Reloc::PIC_, "pic",
  50                       "Fully relocatable, position independent code"),
  51               clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic",
  52                       "Relocatable external references, non-relocatable code"),
  53               clEnumValEnd));
  54
  55 cl::opt<llvm::CodeModel::Model>
  56 CMModel("code-model",
  57         cl::desc("Choose code model"),
  58         cl::init(CodeModel::Default),
  59         cl::values(clEnumValN(CodeModel::Default, "default",
  60                               "Target default code model"),
  61                    clEnumValN(CodeModel::Small, "small",
  62                               "Small code model"),
  63                    clEnumValN(CodeModel::Kernel, "kernel",
  64                               "Kernel code model"),
  65                    clEnumValN(CodeModel::Medium, "medium",
  66                               "Medium code model"),
  67                    clEnumValN(CodeModel::Large, "large",
  68                               "Large code model"),
  69                    clEnumValEnd));
  70
  71 cl::opt<bool>
  72 RelaxAll("mc-relax-all",
  73          cl::desc("When used with filetype=obj, "
  74                   "relax all fixups in the emitted object file"));
  75
  76 cl::opt<TargetMachine::CodeGenFileType>
  77 FileType("filetype", cl::init(TargetMachine::CGFT_AssemblyFile),
  78   cl::desc("Choose a file type (not all types are supported by all targets):"),
  79   cl::values(
  80              clEnumValN(TargetMachine::CGFT_AssemblyFile, "asm",
  81                         "Emit an assembly ('.s') file"),
  82              clEnumValN(TargetMachine::CGFT_ObjectFile, "obj",
  83                         "Emit a native object ('.o') file"),
  84              clEnumValN(TargetMachine::CGFT_Null, "null",
  85                         "Emit nothing, for performance testing"),
  86              clEnumValEnd));
  87
  88 cl::opt<bool> DisableDotLoc("disable-dot-loc", cl::Hidden,
  89                             cl::desc("Do not use .loc entries"));
  90
  91 cl::opt<bool> DisableCFI("disable-cfi", cl::Hidden,
  92                          cl::desc("Do not use .cfi_* directives"));
  93
  94 cl::opt<bool> EnableDwarfDirectory("enable-dwarf-directory", cl::Hidden,
  95                   cl::desc("Use .file directives with an explicit directory."));
  96
  97 cl::opt<bool>
  98 DisableRedZone("disable-red-zone",
  99                cl::desc("Do not emit code that uses the red zone."),
 100                cl::init(false));
 101
 102 cl::opt<bool>
 103 EnableFPMAD("enable-fp-mad",
 104             cl::desc("Enable less precise MAD instructions to be generated"),
 105             cl::init(false));
 106
 107 cl::opt<bool>
 108 DisableFPElim("disable-fp-elim",
 109               cl::desc("Disable frame pointer elimination optimization"),
 110               cl::init(false));
 111
 112 cl::opt<bool>
 113 DisableFPElimNonLeaf("disable-non-leaf-fp-elim",
 114   cl::desc("Disable frame pointer elimination optimization for non-leaf funcs"),
 115   cl::init(false));
 116
 117 cl::opt<bool>
 118 EnableUnsafeFPMath("enable-unsafe-fp-math",
 119                 cl::desc("Enable optimizations that may decrease FP precision"),
 120                 cl::init(false));
 121
 122 cl::opt<bool>
 123 EnableNoInfsFPMath("enable-no-infs-fp-math",
 124                 cl::desc("Enable FP math optimizations that assume no +-Infs"),
 125                 cl::init(false));
 126
 127 cl::opt<bool>
 128 EnableNoNaNsFPMath("enable-no-nans-fp-math",
 129                    cl::desc("Enable FP math optimizations that assume no NaNs"),
 130                    cl::init(false));
 131
 132 cl::opt<bool>
 133 EnableHonorSignDependentRoundingFPMath("enable-sign-dependent-rounding-fp-math",
 134       cl::Hidden,
 135       cl::desc("Force codegen to assume rounding mode can change dynamically"),
 136       cl::init(false));
 137
 138 cl::opt<bool>
 139 GenerateSoftFloatCalls("soft-float",
 140                     cl::desc("Generate software floating point library calls"),
 141                     cl::init(false));
 142
 143 cl::opt<llvm::FloatABI::ABIType>
 144 FloatABIForCalls("float-abi",
 145                  cl::desc("Choose float ABI type"),
 146                  cl::init(FloatABI::Default),
 147                  cl::values(
 148                      clEnumValN(FloatABI::Default, "default",
 149                                 "Target default float ABI type"),
 150                      clEnumValN(FloatABI::Soft, "soft",
 151                                 "Soft float ABI (implied by -soft-float)"),
 152                      clEnumValN(FloatABI::Hard, "hard",
 153                                 "Hard float ABI (uses FP registers)"),
 154                      clEnumValEnd));
 155
 156 cl::opt<llvm::FPOpFusion::FPOpFusionMode>
 157 FuseFPOps("fp-contract",
 158           cl::desc("Enable aggresive formation of fused FP ops"),
 159           cl::init(FPOpFusion::Standard),
 160           cl::values(
 161               clEnumValN(FPOpFusion::Fast, "fast",
 162                          "Fuse FP ops whenever profitable"),
 163               clEnumValN(FPOpFusion::Standard, "on",
 164                          "Only fuse 'blessed' FP ops."),
 165               clEnumValN(FPOpFusion::Strict, "off",
 166                          "Only fuse FP ops when the result won't be effected."),
 167               clEnumValEnd));
 168
 169 cl::opt<bool>
 170 DontPlaceZerosInBSS("nozero-initialized-in-bss",
 171               cl::desc("Don't place zero-initialized symbols into bss section"),
 172               cl::init(false));
 173
 174 cl::opt<bool>
 175 EnableGuaranteedTailCallOpt("tailcallopt",
 176   cl::desc("Turn fastcc calls into tail calls by (potentially) changing ABI."),
 177   cl::init(false));
 178
 179 cl::opt<bool>
 180 DisableTailCalls("disable-tail-calls",
 181                  cl::desc("Never emit tail calls"),
 182                  cl::init(false));
 183
 184 cl::opt<unsigned>
 185 OverrideStackAlignment("stack-alignment",
 186                        cl::desc("Override default stack alignment"),
 187                        cl::init(0));
 188
 189 cl::opt<bool>
 190 EnableRealignStack("realign-stack",
 191                    cl::desc("Realign stack if needed"),
 192                    cl::init(true));
 193
 194 cl::opt<std::string>
 195 TrapFuncName("trap-func", cl::Hidden,
 196         cl::desc("Emit a call to trap function rather than a trap instruction"),
 197         cl::init(""));
 198
 199 cl::opt<bool>
 200 EnablePIE("enable-pie",
 201           cl::desc("Assume the creation of a position independent executable."),
 202           cl::init(false));
 203
 204 cl::opt<bool>
 205 SegmentedStacks("segmented-stacks",
 206                 cl::desc("Use segmented stacks if possible."),
 207                 cl::init(false));
 208
 209 cl::opt<bool>
 210 UseInitArray("use-init-array",
 211              cl::desc("Use .init_array instead of .ctors."),
 212              cl::init(false));
 213
 214 cl::opt<std::string> StopAfter("stop-after",
 215                             cl::desc("Stop compilation after a specific pass"),
 216                             cl::value_desc("pass-name"),
 217                                       cl::init(""));
 218 cl::opt<std::string> StartAfter("start-after",
 219                           cl::desc("Resume compilation after a specific pass"),
 220                           cl::value_desc("pass-name"),
 221                           cl::init(""));
 222
 223 cl::opt<unsigned>
 224 SSPBufferSize("stack-protector-buffer-size", cl::init(8),
 225               cl::desc("Lower bound for a buffer to be considered for "
 226                        "stack protection"));
 227 #endif