Sorry in advance for the stupid question, i still don’t understand some concepts
like passes.
I took a piece of code from llc, and I used it to write a function that creates
an object (or assembly) file from an IR module.
It compiles without any problems. But program crashes when it reaches add()
method of the pass manager.
Can you help me figuring out what’s the problem please? here is my function
int moduleToObjectFile(llvm::Module *module, std::string &srcname,
llvm::LLVMContext &Context) {
SMDiagnostic error;
Triple moduletriple = Triple(module->getTargetTriple());
if (moduletriple.getTriple().empty())
moduletriple.setTriple(sys::getDefaultTargetTriple());
std::string lookuperror;
const Target *moduletarget = TargetRegistry::lookupTarget(MArch,
moduletriple, lookuperror);
if (!moduletarget) {
errs() << lookuperror;
return 1;
}
std::string cpuname = getCPUStr(),
ftrlist = getFeaturesStr();
CodeGenOpt::Level OLvl = CodeGenOpt::Default;
switch ('2') {
default:
errs() << "invalid optimization level.\n";
return 1;
case ' ': break;
case '0': OLvl = CodeGenOpt::None; break;
case '1': OLvl = CodeGenOpt::Less; break;
case '2': OLvl = CodeGenOpt::Default; break;
case '3': OLvl = CodeGenOpt::Aggressive; break;
}
TargetOptions targetopts = InitTargetOptionsFromCodeGenFlags();
std::unique_ptr<TargetMachine>
tmachine(moduletarget->createTargetMachine(moduletriple.getTriple(), cpuname,
ftrlist, targetopts, Reloc::Default, CodeModel::Default, OLvl));
assert(tmachine && "Could not allocate target machine!");
assert(module && "Should have exited if we didn't have a
module!");
if (FloatABIForCalls != FloatABI::Default)
targetopts.FloatABIType = FloatABIForCalls;
std::unique_ptr<tool_output_file> objoutstream =
getOutputFileStream(module, srcname);
if (!objoutstream) return 1;
legacy::PassManager passmanager;
TargetLibraryInfoImpl TLII(moduletriple);
TargetLibraryInfoWrapperPass *tliwp = new
TargetLibraryInfoWrapperPass(TLII);
passmanager.add(tliwp);
module->setDataLayout(tmachine->createDataLayout());
setFunctionAttributes(cpuname, ftrlist, *module);
if (RelaxAll.getNumOccurrences() > 0 &&
FileType != TargetMachine::CGFT_ObjectFile)
errs() << "warning: ignoring -mc-relax-all because filetype
!= obj";
{
raw_pwrite_stream *outstream = &objoutstream->os();
SmallVector<char, 0> filebuf;
std::unique_ptr<raw_svector_ostream> BOS;
if ((FileType != TargetMachine::CGFT_AssemblyFile &&
!objoutstream->os().supportsSeeking())) {
BOS = make_unique<raw_svector_ostream>(filebuf);
outstream = BOS.get();
}
AnalysisID StartBeforeID = nullptr;
AnalysisID StartAfterID = nullptr;
AnalysisID StopAfterID = nullptr;
const PassRegistry *PR = PassRegistry::getPassRegistry();
if (!RunPass.empty()) {
if (!StartAfter.empty() || !StopAfter.empty()) {
errs() << "start-after and/or stop-after passes are
redundant when run-pass is specified.\n";
return 1;
}
const PassInfo *PI = PR->getPassInfo(RunPass);
if (!PI) {
errs() << "run-pass pass is not registered.\n";
return 1;
}
StopAfterID = StartBeforeID = PI->getTypeInfo();
} else {
if (!StartAfter.empty()) {
const PassInfo *PI = PR->getPassInfo(StartAfter);
if (!PI) {
errs() << "start-after pass is not
registered.\n";
return 1;
}
StartAfterID = PI->getTypeInfo();
}
if (!StopAfter.empty()) {
const PassInfo *PI = PR->getPassInfo(StopAfter);
if (!PI) {
errs() << "stop-after pass is not
registered.\n";
return 1;
}
StopAfterID = PI->getTypeInfo();
}
}
if (tmachine->addPassesToEmitFile(passmanager, *outstream, FileType,
false, StartBeforeID, StartAfterID, StopAfterID)) {
errs() << "target does not support generation of this
file type!\n";
return 1;
}
passmanager.run(*module);
if (BOS) {
objoutstream->os() << filebuf;
}
}
objoutstream->keep();
return 0;
}
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Assuming you are talking about this line: passmanager.add(tliwp); I don't see anything obviously wrong. Are you hitting an assertion or a pure crash? (if LLVM not built with assertions, please rebuild). What does your debugger gives you as a stracktrace? -- Mehdi> On Mar 23, 2016, at 3:44 PM, Lorenzo Laneve via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > Sorry in advance for the stupid question, i still don’t understand some concepts like passes. > I took a piece of code from llc, and I used it to write a function that creates an object (or assembly) file from an IR module. > It compiles without any problems. But program crashes when it reaches add() method of the pass manager. > Can you help me figuring out what’s the problem please? here is my function > > > int moduleToObjectFile(llvm::Module *module, std::string &srcname, llvm::LLVMContext &Context) { > SMDiagnostic error; > Triple moduletriple = Triple(module->getTargetTriple()); > > if (moduletriple.getTriple().empty()) > moduletriple.setTriple(sys::getDefaultTargetTriple()); > > std::string lookuperror; > const Target *moduletarget = TargetRegistry::lookupTarget(MArch, moduletriple, lookuperror); > > if (!moduletarget) { > errs() << lookuperror; > return 1; > } > > std::string cpuname = getCPUStr(), > ftrlist = getFeaturesStr(); > > CodeGenOpt::Level OLvl = CodeGenOpt::Default; > switch ('2') { > default: > errs() << "invalid optimization level.\n"; > return 1; > case ' ': break; > case '0': OLvl = CodeGenOpt::None; break; > case '1': OLvl = CodeGenOpt::Less; break; > case '2': OLvl = CodeGenOpt::Default; break; > case '3': OLvl = CodeGenOpt::Aggressive; break; > } > > TargetOptions targetopts = InitTargetOptionsFromCodeGenFlags(); > > std::unique_ptr<TargetMachine> tmachine(moduletarget->createTargetMachine(moduletriple.getTriple(), cpuname, ftrlist, targetopts, Reloc::Default, CodeModel::Default, OLvl)); > > assert(tmachine && "Could not allocate target machine!"); > > assert(module && "Should have exited if we didn't have a module!"); > if (FloatABIForCalls != FloatABI::Default) > targetopts.FloatABIType = FloatABIForCalls; > > > std::unique_ptr<tool_output_file> objoutstream = getOutputFileStream(module, srcname); > if (!objoutstream) return 1; > > legacy::PassManager passmanager; > > TargetLibraryInfoImpl TLII(moduletriple); > > TargetLibraryInfoWrapperPass *tliwp = new TargetLibraryInfoWrapperPass(TLII); > > passmanager.add(tliwp); > > module->setDataLayout(tmachine->createDataLayout()); > > setFunctionAttributes(cpuname, ftrlist, *module); > > if (RelaxAll.getNumOccurrences() > 0 && > FileType != TargetMachine::CGFT_ObjectFile) > errs() << "warning: ignoring -mc-relax-all because filetype != obj"; > > { > raw_pwrite_stream *outstream = &objoutstream->os(); > > SmallVector<char, 0> filebuf; > std::unique_ptr<raw_svector_ostream> BOS; > if ((FileType != TargetMachine::CGFT_AssemblyFile && !objoutstream->os().supportsSeeking())) { > BOS = make_unique<raw_svector_ostream>(filebuf); > outstream = BOS.get(); > } > > AnalysisID StartBeforeID = nullptr; > AnalysisID StartAfterID = nullptr; > AnalysisID StopAfterID = nullptr; > const PassRegistry *PR = PassRegistry::getPassRegistry(); > if (!RunPass.empty()) { > if (!StartAfter.empty() || !StopAfter.empty()) { > errs() << "start-after and/or stop-after passes are redundant when run-pass is specified.\n"; > return 1; > } > const PassInfo *PI = PR->getPassInfo(RunPass); > if (!PI) { > errs() << "run-pass pass is not registered.\n"; > return 1; > } > StopAfterID = StartBeforeID = PI->getTypeInfo(); > } else { > if (!StartAfter.empty()) { > const PassInfo *PI = PR->getPassInfo(StartAfter); > if (!PI) { > errs() << "start-after pass is not registered.\n"; > return 1; > } > StartAfterID = PI->getTypeInfo(); > } > if (!StopAfter.empty()) { > const PassInfo *PI = PR->getPassInfo(StopAfter); > if (!PI) { > errs() << "stop-after pass is not registered.\n"; > return 1; > } > StopAfterID = PI->getTypeInfo(); > } > } > > if (tmachine->addPassesToEmitFile(passmanager, *outstream, FileType, false, StartBeforeID, StartAfterID, StopAfterID)) { > errs() << "target does not support generation of this file type!\n"; > return 1; > } > > passmanager.run(*module); > > if (BOS) { > objoutstream->os() << filebuf; > } > } > > objoutstream->keep(); > > return 0; > } > _______________________________________________ > LLVM Developers mailing list > llvm-dev at lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160323/2ad717dd/attachment-0001.html>
The stack trace: llvm::PMTopLevelManager::addImmutablePass(llvm::ImmutablePass*) llvm::PMTopLevelManager::schedulePass(llvm::Pass*) moduleToObjectFile(llvm::Module*,std::string&,llvm::LLVMContext&) Sometimes it doesn't crash because TargetRegistry::lookupTarget() returns an error which says it doesn't support the current target> On Mar 24, 2016, at 1:14 AM, Mehdi Amini <mehdi.amini at apple.com> wrote: > > Assuming you are talking about this line: > > passmanager.add(tliwp); > > I don't see anything obviously wrong. > Are you hitting an assertion or a pure crash? (if LLVM not built with assertions, please rebuild). > What does your debugger gives you as a stracktrace? > > -- > Mehdi > > > >> On Mar 23, 2016, at 3:44 PM, Lorenzo Laneve via llvm-dev <llvm-dev at lists.llvm.org> wrote: >> >> Sorry in advance for the stupid question, i still don’t understand some concepts like passes. >> I took a piece of code from llc, and I used it to write a function that creates an object (or assembly) file from an IR module. >> It compiles without any problems. But program crashes when it reaches add() method of the pass manager. >> Can you help me figuring out what’s the problem please? here is my function >> >> >> int moduleToObjectFile(llvm::Module *module, std::string &srcname, llvm::LLVMContext &Context) { >> SMDiagnostic error; >> Triple moduletriple = Triple(module->getTargetTriple()); >> >> if (moduletriple.getTriple().empty()) >> moduletriple.setTriple(sys::getDefaultTargetTriple()); >> >> std::string lookuperror; >> const Target *moduletarget = TargetRegistry::lookupTarget(MArch, moduletriple, lookuperror); >> >> if (!moduletarget) { >> errs() << lookuperror; >> return 1; >> } >> >> std::string cpuname = getCPUStr(), >> ftrlist = getFeaturesStr(); >> >> CodeGenOpt::Level OLvl = CodeGenOpt::Default; >> switch ('2') { >> default: >> errs() << "invalid optimization level.\n"; >> return 1; >> case ' ': break; >> case '0': OLvl = CodeGenOpt::None; break; >> case '1': OLvl = CodeGenOpt::Less; break; >> case '2': OLvl = CodeGenOpt::Default; break; >> case '3': OLvl = CodeGenOpt::Aggressive; break; >> } >> >> TargetOptions targetopts = InitTargetOptionsFromCodeGenFlags(); >> >> std::unique_ptr<TargetMachine> tmachine(moduletarget->createTargetMachine(moduletriple.getTriple(), cpuname, ftrlist, targetopts, Reloc::Default, CodeModel::Default, OLvl)); >> >> assert(tmachine && "Could not allocate target machine!"); >> >> assert(module && "Should have exited if we didn't have a module!"); >> if (FloatABIForCalls != FloatABI::Default) >> targetopts.FloatABIType = FloatABIForCalls; >> >> >> std::unique_ptr<tool_output_file> objoutstream = getOutputFileStream(module, srcname); >> if (!objoutstream) return 1; >> >> legacy::PassManager passmanager; >> >> TargetLibraryInfoImpl TLII(moduletriple); >> >> TargetLibraryInfoWrapperPass *tliwp = new TargetLibraryInfoWrapperPass(TLII); >> >> passmanager.add(tliwp); >> >> module->setDataLayout(tmachine->createDataLayout()); >> >> setFunctionAttributes(cpuname, ftrlist, *module); >> >> if (RelaxAll.getNumOccurrences() > 0 && >> FileType != TargetMachine::CGFT_ObjectFile) >> errs() << "warning: ignoring -mc-relax-all because filetype != obj"; >> >> { >> raw_pwrite_stream *outstream = &objoutstream->os(); >> >> SmallVector<char, 0> filebuf; >> std::unique_ptr<raw_svector_ostream> BOS; >> if ((FileType != TargetMachine::CGFT_AssemblyFile && !objoutstream->os().supportsSeeking())) { >> BOS = make_unique<raw_svector_ostream>(filebuf); >> outstream = BOS.get(); >> } >> >> AnalysisID StartBeforeID = nullptr; >> AnalysisID StartAfterID = nullptr; >> AnalysisID StopAfterID = nullptr; >> const PassRegistry *PR = PassRegistry::getPassRegistry(); >> if (!RunPass.empty()) { >> if (!StartAfter.empty() || !StopAfter.empty()) { >> errs() << "start-after and/or stop-after passes are redundant when run-pass is specified.\n"; >> return 1; >> } >> const PassInfo *PI = PR->getPassInfo(RunPass); >> if (!PI) { >> errs() << "run-pass pass is not registered.\n"; >> return 1; >> } >> StopAfterID = StartBeforeID = PI->getTypeInfo(); >> } else { >> if (!StartAfter.empty()) { >> const PassInfo *PI = PR->getPassInfo(StartAfter); >> if (!PI) { >> errs() << "start-after pass is not registered.\n"; >> return 1; >> } >> StartAfterID = PI->getTypeInfo(); >> } >> if (!StopAfter.empty()) { >> const PassInfo *PI = PR->getPassInfo(StopAfter); >> if (!PI) { >> errs() << "stop-after pass is not registered.\n"; >> return 1; >> } >> StopAfterID = PI->getTypeInfo(); >> } >> } >> >> if (tmachine->addPassesToEmitFile(passmanager, *outstream, FileType, false, StartBeforeID, StartAfterID, StopAfterID)) { >> errs() << "target does not support generation of this file type!\n"; >> return 1; >> } >> >> passmanager.run(*module); >> >> if (BOS) { >> objoutstream->os() << filebuf; >> } >> } >> >> objoutstream->keep(); >> >> return 0; >> } >> _______________________________________________ >> LLVM Developers mailing list >> llvm-dev at lists.llvm.org >> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev >-------------- next part -------------- An HTML attachment was scrubbed... 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