Please add .o writer example to next release

Project Infrastructure LLVM Dev List Archives
#1

Hi!

Is it possible that you add an example how to write a .o with llvm?
Just like examples/ModuleMaker but instead of printing to stdout
writing a .o file as starting point for the new MC functionality.

-Jochen

#2

Jochen Wilhelmy <j.wilhelmy@arcor.de> writes:

Is it possible that you add an example how to write a .o with llvm?

+1

#3

this is function I use to emit an object file:

void output_object (llvm::Module * Module, llvm::TargetMachine * Target, llvm::raw_ostream & Output)
{
llvm::formatted_raw_ostream fOutput (Output);

FunctionPassManager Passes(Module);

Passes.add(new TargetData (*Target->getTargetData()));

if (Target->addPassesToEmitFile(Passes, fOutput, llvm::TargetMachine::CGFT_ObjectFile, llvm::CodeGenOpt::None))
throw std::runtime_error (“bad voodoo (Target->addPassesToEmitFile)”);

Passes.doInitialization();

for (llvm::Module::iterator I = Module->begin(), E = Module->end(); I != E; ++I)
if (!I->isDeclaration())
Passes.run(*I);

Passes.doFinalization();
}