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[svn r95] added support for mains like:

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T main(string[] args)
fixed a bug with slicing a pointer that is an argument with no storage
This commit is contained in:
Tomas Lindquist Olsen
2007-11-07 04:52:56 +01:00
parent 4a5659c04e
commit ea18cd8e75
5 changed files with 77 additions and 3 deletions
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33
gen/tollvm.cpp
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@@ -660,10 +660,39 @@ void DtoMain()
// call static ctors
llvm::Function* fn = LLVM_D_GetRuntimeFunction(ir.module,"_d_run_module_ctors");
new llvm::CallInst(fn,"",bb);
llvm::Instruction* apt = new llvm::CallInst(fn,"",bb);
// call user main function
llvm::CallInst* call = new llvm::CallInst(ir.mainFunc,"ret",bb);
const llvm::FunctionType* mainty = ir.mainFunc->getFunctionType();
llvm::CallInst* call;
if (mainty->getNumParams() > 0)
{
// main with arguments
assert(mainty->getNumParams() == 1);
std::vector<llvm::Value*> args;
llvm::Function* mfn = LLVM_D_GetRuntimeFunction(ir.module,"_d_main_args");
llvm::Function::arg_iterator argi = func->arg_begin();
args.push_back(argi++);
args.push_back(argi++);
const llvm::Type* at = mainty->getParamType(0)->getContainedType(0);
llvm::Value* arr = new llvm::AllocaInst(at->getContainedType(1)->getContainedType(0), func->arg_begin(), "argstorage", apt);
llvm::Value* a = new llvm::AllocaInst(at, "argarray", apt);
llvm::Value* ptr = DtoGEPi(a,0,0,"tmp",bb);
llvm::Value* v = new llvm::ZExtInst(args[0], DtoSize_t(), "tmp", bb);
new llvm::StoreInst(v,ptr,bb);
ptr = DtoGEPi(a,0,1,"tmp",bb);
new llvm::StoreInst(arr,ptr,bb);
args.push_back(a);
new llvm::CallInst(mfn, args.begin(), args.end(), "", bb);
call = new llvm::CallInst(ir.mainFunc,a,"ret",bb);
}
else
{
// main with no arguments
call = new llvm::CallInst(ir.mainFunc,"ret",bb);
}
call->setCallingConv(ir.mainFunc->getCallingConv());
// call static dtors