Added IrTypeFunction and IrTypeDelegate and eliminated IrDType. This means the Type::ir field can be removed. It's the final part needed for the move to a slightly more sane type system. Now the whole thing just needs to be cleaned up :P Added -v-cg switch, which right now just prints "codegen: module.name (module/name.d)" to stdout, this can really help figuring out where, in some complex build command, things go wrong.

#include "gen/llvm.h"
#include "gen/tollvm.h"
#include "gen/irstate.h"
#include "ir/irmodule.h"

IrModule::IrModule(Module* module, const char* srcfilename)
{
    M = module;

    LLConstant* slice = DtoConstString(srcfilename);
    fileName = new llvm::GlobalVariable(
        slice->getType(), true, LLGlobalValue::InternalLinkage, slice, ".modulefilename", gIR->module);
}

IrModule::~IrModule()
{
}