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llc.cpp (221337) llc.cpp (223013)
1//===-- llc.cpp - Implement the LLVM Native Code Generator ----------------===//
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 is the llc code generator driver. It provides a convenient
11// command-line interface for generating native assembly-language code
12// or C code, given LLVM bitcode.
13//
14//===----------------------------------------------------------------------===//
15
16#include "llvm/LLVMContext.h"
17#include "llvm/Module.h"
18#include "llvm/PassManager.h"
19#include "llvm/Pass.h"
20#include "llvm/ADT/Triple.h"
21#include "llvm/Support/IRReader.h"
22#include "llvm/CodeGen/LinkAllAsmWriterComponents.h"
23#include "llvm/CodeGen/LinkAllCodegenComponents.h"
24#include "llvm/Config/config.h"
25#include "llvm/Support/CommandLine.h"
26#include "llvm/Support/Debug.h"
27#include "llvm/Support/FormattedStream.h"
28#include "llvm/Support/ManagedStatic.h"
29#include "llvm/Support/PluginLoader.h"
30#include "llvm/Support/PrettyStackTrace.h"
31#include "llvm/Support/ToolOutputFile.h"
32#include "llvm/Support/Host.h"
33#include "llvm/Support/Signals.h"
34#include "llvm/Target/SubtargetFeature.h"
35#include "llvm/Target/TargetData.h"
36#include "llvm/Target/TargetMachine.h"
37#include "llvm/Target/TargetRegistry.h"
38#include "llvm/Target/TargetSelect.h"
39#include <memory>
40using namespace llvm;
41
42// General options for llc. Other pass-specific options are specified
43// within the corresponding llc passes, and target-specific options
44// and back-end code generation options are specified with the target machine.
45//
46static cl::opt<std::string>
47InputFilename(cl::Positional, cl::desc("<input bitcode>"), cl::init("-"));
48
49static cl::opt<std::string>
50OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"));
51
52// Determine optimization level.
53static cl::opt<char>
54OptLevel("O",
55 cl::desc("Optimization level. [-O0, -O1, -O2, or -O3] "
56 "(default = '-O2')"),
57 cl::Prefix,
58 cl::ZeroOrMore,
59 cl::init(' '));
60
61static cl::opt<std::string>
62TargetTriple("mtriple", cl::desc("Override target triple for module"));
63
64static cl::opt<std::string>
65MArch("march", cl::desc("Architecture to generate code for (see --version)"));
66
67static cl::opt<std::string>
68MCPU("mcpu",
69 cl::desc("Target a specific cpu type (-mcpu=help for details)"),
70 cl::value_desc("cpu-name"),
71 cl::init(""));
72
73static cl::list<std::string>
74MAttrs("mattr",
75 cl::CommaSeparated,
76 cl::desc("Target specific attributes (-mattr=help for details)"),
77 cl::value_desc("a1,+a2,-a3,..."));
78
79static cl::opt<bool>
80RelaxAll("mc-relax-all",
81 cl::desc("When used with filetype=obj, "
82 "relax all fixups in the emitted object file"));
83
84cl::opt<TargetMachine::CodeGenFileType>
85FileType("filetype", cl::init(TargetMachine::CGFT_AssemblyFile),
86 cl::desc("Choose a file type (not all types are supported by all targets):"),
87 cl::values(
88 clEnumValN(TargetMachine::CGFT_AssemblyFile, "asm",
89 "Emit an assembly ('.s') file"),
90 clEnumValN(TargetMachine::CGFT_ObjectFile, "obj",
91 "Emit a native object ('.o') file [experimental]"),
92 clEnumValN(TargetMachine::CGFT_Null, "null",
93 "Emit nothing, for performance testing"),
94 clEnumValEnd));
95
96cl::opt<bool> NoVerify("disable-verify", cl::Hidden,
97 cl::desc("Do not verify input module"));
98
99cl::opt<bool> DisableDotLoc("disable-dot-loc", cl::Hidden,
100 cl::desc("Do not use .loc entries"));
101
102cl::opt<bool> DisableCFI("disable-cfi", cl::Hidden,
103 cl::desc("Do not use .cfi_* directives"));
104
105static cl::opt<bool>
106DisableRedZone("disable-red-zone",
107 cl::desc("Do not emit code that uses the red zone."),
108 cl::init(false));
109
1//===-- llc.cpp - Implement the LLVM Native Code Generator ----------------===//
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 is the llc code generator driver. It provides a convenient
11// command-line interface for generating native assembly-language code
12// or C code, given LLVM bitcode.
13//
14//===----------------------------------------------------------------------===//
15
16#include "llvm/LLVMContext.h"
17#include "llvm/Module.h"
18#include "llvm/PassManager.h"
19#include "llvm/Pass.h"
20#include "llvm/ADT/Triple.h"
21#include "llvm/Support/IRReader.h"
22#include "llvm/CodeGen/LinkAllAsmWriterComponents.h"
23#include "llvm/CodeGen/LinkAllCodegenComponents.h"
24#include "llvm/Config/config.h"
25#include "llvm/Support/CommandLine.h"
26#include "llvm/Support/Debug.h"
27#include "llvm/Support/FormattedStream.h"
28#include "llvm/Support/ManagedStatic.h"
29#include "llvm/Support/PluginLoader.h"
30#include "llvm/Support/PrettyStackTrace.h"
31#include "llvm/Support/ToolOutputFile.h"
32#include "llvm/Support/Host.h"
33#include "llvm/Support/Signals.h"
34#include "llvm/Target/SubtargetFeature.h"
35#include "llvm/Target/TargetData.h"
36#include "llvm/Target/TargetMachine.h"
37#include "llvm/Target/TargetRegistry.h"
38#include "llvm/Target/TargetSelect.h"
39#include <memory>
40using namespace llvm;
41
42// General options for llc. Other pass-specific options are specified
43// within the corresponding llc passes, and target-specific options
44// and back-end code generation options are specified with the target machine.
45//
46static cl::opt<std::string>
47InputFilename(cl::Positional, cl::desc("<input bitcode>"), cl::init("-"));
48
49static cl::opt<std::string>
50OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"));
51
52// Determine optimization level.
53static cl::opt<char>
54OptLevel("O",
55 cl::desc("Optimization level. [-O0, -O1, -O2, or -O3] "
56 "(default = '-O2')"),
57 cl::Prefix,
58 cl::ZeroOrMore,
59 cl::init(' '));
60
61static cl::opt<std::string>
62TargetTriple("mtriple", cl::desc("Override target triple for module"));
63
64static cl::opt<std::string>
65MArch("march", cl::desc("Architecture to generate code for (see --version)"));
66
67static cl::opt<std::string>
68MCPU("mcpu",
69 cl::desc("Target a specific cpu type (-mcpu=help for details)"),
70 cl::value_desc("cpu-name"),
71 cl::init(""));
72
73static cl::list<std::string>
74MAttrs("mattr",
75 cl::CommaSeparated,
76 cl::desc("Target specific attributes (-mattr=help for details)"),
77 cl::value_desc("a1,+a2,-a3,..."));
78
79static cl::opt<bool>
80RelaxAll("mc-relax-all",
81 cl::desc("When used with filetype=obj, "
82 "relax all fixups in the emitted object file"));
83
84cl::opt<TargetMachine::CodeGenFileType>
85FileType("filetype", cl::init(TargetMachine::CGFT_AssemblyFile),
86 cl::desc("Choose a file type (not all types are supported by all targets):"),
87 cl::values(
88 clEnumValN(TargetMachine::CGFT_AssemblyFile, "asm",
89 "Emit an assembly ('.s') file"),
90 clEnumValN(TargetMachine::CGFT_ObjectFile, "obj",
91 "Emit a native object ('.o') file [experimental]"),
92 clEnumValN(TargetMachine::CGFT_Null, "null",
93 "Emit nothing, for performance testing"),
94 clEnumValEnd));
95
96cl::opt<bool> NoVerify("disable-verify", cl::Hidden,
97 cl::desc("Do not verify input module"));
98
99cl::opt<bool> DisableDotLoc("disable-dot-loc", cl::Hidden,
100 cl::desc("Do not use .loc entries"));
101
102cl::opt<bool> DisableCFI("disable-cfi", cl::Hidden,
103 cl::desc("Do not use .cfi_* directives"));
104
105static cl::opt<bool>
106DisableRedZone("disable-red-zone",
107 cl::desc("Do not emit code that uses the red zone."),
108 cl::init(false));
109
110static cl::opt<bool>
111NoImplicitFloats("no-implicit-float",
112 cl::desc("Don't generate implicit floating point instructions (x86-only)"),
113 cl::init(false));
114
115// GetFileNameRoot - Helper function to get the basename of a filename.
116static inline std::string
117GetFileNameRoot(const std::string &InputFilename) {
118 std::string IFN = InputFilename;
119 std::string outputFilename;
120 int Len = IFN.length();
121 if ((Len > 2) &&
122 IFN[Len-3] == '.' &&
123 ((IFN[Len-2] == 'b' && IFN[Len-1] == 'c') ||
124 (IFN[Len-2] == 'l' && IFN[Len-1] == 'l'))) {
125 outputFilename = std::string(IFN.begin(), IFN.end()-3); // s/.bc/.s/
126 } else {
127 outputFilename = IFN;
128 }
129 return outputFilename;
130}
131
132static tool_output_file *GetOutputStream(const char *TargetName,
133 Triple::OSType OS,
134 const char *ProgName) {
135 // If we don't yet have an output filename, make one.
136 if (OutputFilename.empty()) {
137 if (InputFilename == "-")
138 OutputFilename = "-";
139 else {
140 OutputFilename = GetFileNameRoot(InputFilename);
141
142 switch (FileType) {
143 default: assert(0 && "Unknown file type");
144 case TargetMachine::CGFT_AssemblyFile:
145 if (TargetName[0] == 'c') {
146 if (TargetName[1] == 0)
147 OutputFilename += ".cbe.c";
148 else if (TargetName[1] == 'p' && TargetName[2] == 'p')
149 OutputFilename += ".cpp";
150 else
151 OutputFilename += ".s";
152 } else
153 OutputFilename += ".s";
154 break;
155 case TargetMachine::CGFT_ObjectFile:
156 if (OS == Triple::Win32)
157 OutputFilename += ".obj";
158 else
159 OutputFilename += ".o";
160 break;
161 case TargetMachine::CGFT_Null:
162 OutputFilename += ".null";
163 break;
164 }
165 }
166 }
167
168 // Decide if we need "binary" output.
169 bool Binary = false;
170 switch (FileType) {
171 default: assert(0 && "Unknown file type");
172 case TargetMachine::CGFT_AssemblyFile:
173 break;
174 case TargetMachine::CGFT_ObjectFile:
175 case TargetMachine::CGFT_Null:
176 Binary = true;
177 break;
178 }
179
180 // Open the file.
181 std::string error;
182 unsigned OpenFlags = 0;
183 if (Binary) OpenFlags |= raw_fd_ostream::F_Binary;
184 tool_output_file *FDOut = new tool_output_file(OutputFilename.c_str(), error,
185 OpenFlags);
186 if (!error.empty()) {
187 errs() << error << '\n';
188 delete FDOut;
189 return 0;
190 }
191
192 return FDOut;
193}
194
195// main - Entry point for the llc compiler.
196//
197int main(int argc, char **argv) {
198 sys::PrintStackTraceOnErrorSignal();
199 PrettyStackTraceProgram X(argc, argv);
200
201 // Enable debug stream buffering.
202 EnableDebugBuffering = true;
203
204 LLVMContext &Context = getGlobalContext();
205 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
206
207 // Initialize targets first, so that --version shows registered targets.
208 InitializeAllTargets();
209 InitializeAllAsmPrinters();
210 InitializeAllAsmParsers();
211
212 cl::ParseCommandLineOptions(argc, argv, "llvm system compiler\n");
213
214 // Load the module to be compiled...
215 SMDiagnostic Err;
216 std::auto_ptr<Module> M;
217
218 M.reset(ParseIRFile(InputFilename, Err, Context));
219 if (M.get() == 0) {
220 Err.Print(argv[0], errs());
221 return 1;
222 }
223 Module &mod = *M.get();
224
225 // If we are supposed to override the target triple, do so now.
226 if (!TargetTriple.empty())
227 mod.setTargetTriple(Triple::normalize(TargetTriple));
228
229 Triple TheTriple(mod.getTargetTriple());
230 if (TheTriple.getTriple().empty())
231 TheTriple.setTriple(sys::getHostTriple());
232
233 // Allocate target machine. First, check whether the user has explicitly
234 // specified an architecture to compile for. If so we have to look it up by
235 // name, because it might be a backend that has no mapping to a target triple.
236 const Target *TheTarget = 0;
237 if (!MArch.empty()) {
238 for (TargetRegistry::iterator it = TargetRegistry::begin(),
239 ie = TargetRegistry::end(); it != ie; ++it) {
240 if (MArch == it->getName()) {
241 TheTarget = &*it;
242 break;
243 }
244 }
245
246 if (!TheTarget) {
247 errs() << argv[0] << ": error: invalid target '" << MArch << "'.\n";
248 return 1;
249 }
250
251 // Adjust the triple to match (if known), otherwise stick with the
252 // module/host triple.
253 Triple::ArchType Type = Triple::getArchTypeForLLVMName(MArch);
254 if (Type != Triple::UnknownArch)
255 TheTriple.setArch(Type);
256 } else {
257 std::string Err;
258 TheTarget = TargetRegistry::lookupTarget(TheTriple.getTriple(), Err);
259 if (TheTarget == 0) {
260 errs() << argv[0] << ": error auto-selecting target for module '"
261 << Err << "'. Please use the -march option to explicitly "
262 << "pick a target.\n";
263 return 1;
264 }
265 }
266
267 // Package up features to be passed to target/subtarget
268 std::string FeaturesStr;
269 if (MCPU.size() || MAttrs.size()) {
270 SubtargetFeatures Features;
271 Features.setCPU(MCPU);
272 for (unsigned i = 0; i != MAttrs.size(); ++i)
273 Features.AddFeature(MAttrs[i]);
274 FeaturesStr = Features.getString();
275 }
276
277 std::auto_ptr<TargetMachine>
278 target(TheTarget->createTargetMachine(TheTriple.getTriple(), FeaturesStr));
279 assert(target.get() && "Could not allocate target machine!");
280 TargetMachine &Target = *target.get();
281
282 if (DisableDotLoc)
283 Target.setMCUseLoc(false);
284
285 if (DisableCFI)
286 Target.setMCUseCFI(false);
287
288 // Disable .loc support for older OS X versions.
289 if (TheTriple.isMacOSX() &&
290 TheTriple.isMacOSXVersionLT(10, 6))
291 Target.setMCUseLoc(false);
292
293 // Figure out where we are going to send the output...
294 OwningPtr<tool_output_file> Out
295 (GetOutputStream(TheTarget->getName(), TheTriple.getOS(), argv[0]));
296 if (!Out) return 1;
297
298 CodeGenOpt::Level OLvl = CodeGenOpt::Default;
299 switch (OptLevel) {
300 default:
301 errs() << argv[0] << ": invalid optimization level.\n";
302 return 1;
303 case ' ': break;
304 case '0': OLvl = CodeGenOpt::None; break;
305 case '1': OLvl = CodeGenOpt::Less; break;
306 case '2': OLvl = CodeGenOpt::Default; break;
307 case '3': OLvl = CodeGenOpt::Aggressive; break;
308 }
309
310 // Build up all of the passes that we want to do to the module.
311 PassManager PM;
312
313 // Add the target data from the target machine, if it exists, or the module.
314 if (const TargetData *TD = Target.getTargetData())
315 PM.add(new TargetData(*TD));
316 else
317 PM.add(new TargetData(&mod));
318
319 // Override default to generate verbose assembly.
320 Target.setAsmVerbosityDefault(true);
321
322 if (RelaxAll) {
323 if (FileType != TargetMachine::CGFT_ObjectFile)
324 errs() << argv[0]
325 << ": warning: ignoring -mc-relax-all because filetype != obj";
326 else
327 Target.setMCRelaxAll(true);
328 }
329
330 {
331 formatted_raw_ostream FOS(Out->os());
332
333 // Ask the target to add backend passes as necessary.
334 if (Target.addPassesToEmitFile(PM, FOS, FileType, OLvl, NoVerify)) {
335 errs() << argv[0] << ": target does not support generation of this"
336 << " file type!\n";
337 return 1;
338 }
339
340 // Before executing passes, print the final values of the LLVM options.
341 cl::PrintOptionValues();
342
343 PM.run(mod);
344 }
345
346 // Declare success.
347 Out->keep();
348
349 return 0;
350}
110// GetFileNameRoot - Helper function to get the basename of a filename.
111static inline std::string
112GetFileNameRoot(const std::string &InputFilename) {
113 std::string IFN = InputFilename;
114 std::string outputFilename;
115 int Len = IFN.length();
116 if ((Len > 2) &&
117 IFN[Len-3] == '.' &&
118 ((IFN[Len-2] == 'b' && IFN[Len-1] == 'c') ||
119 (IFN[Len-2] == 'l' && IFN[Len-1] == 'l'))) {
120 outputFilename = std::string(IFN.begin(), IFN.end()-3); // s/.bc/.s/
121 } else {
122 outputFilename = IFN;
123 }
124 return outputFilename;
125}
126
127static tool_output_file *GetOutputStream(const char *TargetName,
128 Triple::OSType OS,
129 const char *ProgName) {
130 // If we don't yet have an output filename, make one.
131 if (OutputFilename.empty()) {
132 if (InputFilename == "-")
133 OutputFilename = "-";
134 else {
135 OutputFilename = GetFileNameRoot(InputFilename);
136
137 switch (FileType) {
138 default: assert(0 && "Unknown file type");
139 case TargetMachine::CGFT_AssemblyFile:
140 if (TargetName[0] == 'c') {
141 if (TargetName[1] == 0)
142 OutputFilename += ".cbe.c";
143 else if (TargetName[1] == 'p' && TargetName[2] == 'p')
144 OutputFilename += ".cpp";
145 else
146 OutputFilename += ".s";
147 } else
148 OutputFilename += ".s";
149 break;
150 case TargetMachine::CGFT_ObjectFile:
151 if (OS == Triple::Win32)
152 OutputFilename += ".obj";
153 else
154 OutputFilename += ".o";
155 break;
156 case TargetMachine::CGFT_Null:
157 OutputFilename += ".null";
158 break;
159 }
160 }
161 }
162
163 // Decide if we need "binary" output.
164 bool Binary = false;
165 switch (FileType) {
166 default: assert(0 && "Unknown file type");
167 case TargetMachine::CGFT_AssemblyFile:
168 break;
169 case TargetMachine::CGFT_ObjectFile:
170 case TargetMachine::CGFT_Null:
171 Binary = true;
172 break;
173 }
174
175 // Open the file.
176 std::string error;
177 unsigned OpenFlags = 0;
178 if (Binary) OpenFlags |= raw_fd_ostream::F_Binary;
179 tool_output_file *FDOut = new tool_output_file(OutputFilename.c_str(), error,
180 OpenFlags);
181 if (!error.empty()) {
182 errs() << error << '\n';
183 delete FDOut;
184 return 0;
185 }
186
187 return FDOut;
188}
189
190// main - Entry point for the llc compiler.
191//
192int main(int argc, char **argv) {
193 sys::PrintStackTraceOnErrorSignal();
194 PrettyStackTraceProgram X(argc, argv);
195
196 // Enable debug stream buffering.
197 EnableDebugBuffering = true;
198
199 LLVMContext &Context = getGlobalContext();
200 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
201
202 // Initialize targets first, so that --version shows registered targets.
203 InitializeAllTargets();
204 InitializeAllAsmPrinters();
205 InitializeAllAsmParsers();
206
207 cl::ParseCommandLineOptions(argc, argv, "llvm system compiler\n");
208
209 // Load the module to be compiled...
210 SMDiagnostic Err;
211 std::auto_ptr<Module> M;
212
213 M.reset(ParseIRFile(InputFilename, Err, Context));
214 if (M.get() == 0) {
215 Err.Print(argv[0], errs());
216 return 1;
217 }
218 Module &mod = *M.get();
219
220 // If we are supposed to override the target triple, do so now.
221 if (!TargetTriple.empty())
222 mod.setTargetTriple(Triple::normalize(TargetTriple));
223
224 Triple TheTriple(mod.getTargetTriple());
225 if (TheTriple.getTriple().empty())
226 TheTriple.setTriple(sys::getHostTriple());
227
228 // Allocate target machine. First, check whether the user has explicitly
229 // specified an architecture to compile for. If so we have to look it up by
230 // name, because it might be a backend that has no mapping to a target triple.
231 const Target *TheTarget = 0;
232 if (!MArch.empty()) {
233 for (TargetRegistry::iterator it = TargetRegistry::begin(),
234 ie = TargetRegistry::end(); it != ie; ++it) {
235 if (MArch == it->getName()) {
236 TheTarget = &*it;
237 break;
238 }
239 }
240
241 if (!TheTarget) {
242 errs() << argv[0] << ": error: invalid target '" << MArch << "'.\n";
243 return 1;
244 }
245
246 // Adjust the triple to match (if known), otherwise stick with the
247 // module/host triple.
248 Triple::ArchType Type = Triple::getArchTypeForLLVMName(MArch);
249 if (Type != Triple::UnknownArch)
250 TheTriple.setArch(Type);
251 } else {
252 std::string Err;
253 TheTarget = TargetRegistry::lookupTarget(TheTriple.getTriple(), Err);
254 if (TheTarget == 0) {
255 errs() << argv[0] << ": error auto-selecting target for module '"
256 << Err << "'. Please use the -march option to explicitly "
257 << "pick a target.\n";
258 return 1;
259 }
260 }
261
262 // Package up features to be passed to target/subtarget
263 std::string FeaturesStr;
264 if (MCPU.size() || MAttrs.size()) {
265 SubtargetFeatures Features;
266 Features.setCPU(MCPU);
267 for (unsigned i = 0; i != MAttrs.size(); ++i)
268 Features.AddFeature(MAttrs[i]);
269 FeaturesStr = Features.getString();
270 }
271
272 std::auto_ptr<TargetMachine>
273 target(TheTarget->createTargetMachine(TheTriple.getTriple(), FeaturesStr));
274 assert(target.get() && "Could not allocate target machine!");
275 TargetMachine &Target = *target.get();
276
277 if (DisableDotLoc)
278 Target.setMCUseLoc(false);
279
280 if (DisableCFI)
281 Target.setMCUseCFI(false);
282
283 // Disable .loc support for older OS X versions.
284 if (TheTriple.isMacOSX() &&
285 TheTriple.isMacOSXVersionLT(10, 6))
286 Target.setMCUseLoc(false);
287
288 // Figure out where we are going to send the output...
289 OwningPtr<tool_output_file> Out
290 (GetOutputStream(TheTarget->getName(), TheTriple.getOS(), argv[0]));
291 if (!Out) return 1;
292
293 CodeGenOpt::Level OLvl = CodeGenOpt::Default;
294 switch (OptLevel) {
295 default:
296 errs() << argv[0] << ": invalid optimization level.\n";
297 return 1;
298 case ' ': break;
299 case '0': OLvl = CodeGenOpt::None; break;
300 case '1': OLvl = CodeGenOpt::Less; break;
301 case '2': OLvl = CodeGenOpt::Default; break;
302 case '3': OLvl = CodeGenOpt::Aggressive; break;
303 }
304
305 // Build up all of the passes that we want to do to the module.
306 PassManager PM;
307
308 // Add the target data from the target machine, if it exists, or the module.
309 if (const TargetData *TD = Target.getTargetData())
310 PM.add(new TargetData(*TD));
311 else
312 PM.add(new TargetData(&mod));
313
314 // Override default to generate verbose assembly.
315 Target.setAsmVerbosityDefault(true);
316
317 if (RelaxAll) {
318 if (FileType != TargetMachine::CGFT_ObjectFile)
319 errs() << argv[0]
320 << ": warning: ignoring -mc-relax-all because filetype != obj";
321 else
322 Target.setMCRelaxAll(true);
323 }
324
325 {
326 formatted_raw_ostream FOS(Out->os());
327
328 // Ask the target to add backend passes as necessary.
329 if (Target.addPassesToEmitFile(PM, FOS, FileType, OLvl, NoVerify)) {
330 errs() << argv[0] << ": target does not support generation of this"
331 << " file type!\n";
332 return 1;
333 }
334
335 // Before executing passes, print the final values of the LLVM options.
336 cl::PrintOptionValues();
337
338 PM.run(mod);
339 }
340
341 // Declare success.
342 Out->keep();
343
344 return 0;
345}