1 //===-- CommandFlags.h - Command Line Flags Interface -----------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
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
14 //===----------------------------------------------------------------------===//
16 #ifndef LLVM_CODEGEN_COMMANDFLAGS_H
17 #define LLVM_CODEGEN_COMMANDFLAGS_H
19 #include "llvm/Support/CodeGen.h"
20 #include "llvm/Support/CommandLine.h"
21 #include "llvm/Target/TargetMachine.h"
26 MArch("march", cl::desc("Architecture to generate code for (see --version)"));
30 cl::desc("Target a specific cpu type (-mcpu=help for details)"),
31 cl::value_desc("cpu-name"),
37 cl::desc("Target specific attributes (-mattr=help for details)"),
38 cl::value_desc("a1,+a2,-a3,..."));
41 RelocModel("relocation-model",
42 cl::desc("Choose relocation model"),
43 cl::init(Reloc::Default),
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"),
55 cl::opt<llvm::CodeModel::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",
63 clEnumValN(CodeModel::Kernel, "kernel",
65 clEnumValN(CodeModel::Medium, "medium",
67 clEnumValN(CodeModel::Large, "large",
72 RelaxAll("mc-relax-all",
73 cl::desc("When used with filetype=obj, "
74 "relax all fixups in the emitted object file"));
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):"),
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"),
88 cl::opt<bool> DisableDotLoc("disable-dot-loc", cl::Hidden,
89 cl::desc("Do not use .loc entries"));
91 cl::opt<bool> DisableCFI("disable-cfi", cl::Hidden,
92 cl::desc("Do not use .cfi_* directives"));
94 cl::opt<bool> EnableDwarfDirectory("enable-dwarf-directory", cl::Hidden,
95 cl::desc("Use .file directives with an explicit directory."));
98 DisableRedZone("disable-red-zone",
99 cl::desc("Do not emit code that uses the red zone."),
103 EnableFPMAD("enable-fp-mad",
104 cl::desc("Enable less precise MAD instructions to be generated"),
108 DisableFPElim("disable-fp-elim",
109 cl::desc("Disable frame pointer elimination optimization"),
113 DisableFPElimNonLeaf("disable-non-leaf-fp-elim",
114 cl::desc("Disable frame pointer elimination optimization for non-leaf funcs"),
118 EnableUnsafeFPMath("enable-unsafe-fp-math",
119 cl::desc("Enable optimizations that may decrease FP precision"),
123 EnableNoInfsFPMath("enable-no-infs-fp-math",
124 cl::desc("Enable FP math optimizations that assume no +-Infs"),
128 EnableNoNaNsFPMath("enable-no-nans-fp-math",
129 cl::desc("Enable FP math optimizations that assume no NaNs"),
133 EnableHonorSignDependentRoundingFPMath("enable-sign-dependent-rounding-fp-math",
135 cl::desc("Force codegen to assume rounding mode can change dynamically"),
139 GenerateSoftFloatCalls("soft-float",
140 cl::desc("Generate software floating point library calls"),
143 cl::opt<llvm::FloatABI::ABIType>
144 FloatABIForCalls("float-abi",
145 cl::desc("Choose float ABI type"),
146 cl::init(FloatABI::Default),
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)"),
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),
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."),
170 DontPlaceZerosInBSS("nozero-initialized-in-bss",
171 cl::desc("Don't place zero-initialized symbols into bss section"),
175 EnableGuaranteedTailCallOpt("tailcallopt",
176 cl::desc("Turn fastcc calls into tail calls by (potentially) changing ABI."),
180 DisableTailCalls("disable-tail-calls",
181 cl::desc("Never emit tail calls"),
185 OverrideStackAlignment("stack-alignment",
186 cl::desc("Override default stack alignment"),
190 EnableRealignStack("realign-stack",
191 cl::desc("Realign stack if needed"),
195 TrapFuncName("trap-func", cl::Hidden,
196 cl::desc("Emit a call to trap function rather than a trap instruction"),
200 EnablePIE("enable-pie",
201 cl::desc("Assume the creation of a position independent executable."),
205 SegmentedStacks("segmented-stacks",
206 cl::desc("Use segmented stacks if possible."),
210 UseInitArray("use-init-array",
211 cl::desc("Use .init_array instead of .ctors."),
214 cl::opt<std::string> StopAfter("stop-after",
215 cl::desc("Stop compilation after a specific pass"),
216 cl::value_desc("pass-name"),
218 cl::opt<std::string> StartAfter("start-after",
219 cl::desc("Resume compilation after a specific pass"),
220 cl::value_desc("pass-name"),
224 SSPBufferSize("stack-protector-buffer-size", cl::init(8),
225 cl::desc("Lower bound for a buffer to be considered for "
226 "stack protection"));