newbie question regarding llvm-mingw

Hello,

I'm playing around with the llvm-tools.

On linux everything worked as expected: I downloaded and compiled the
llvm-source. Assembled (llvm-as) and linked (llvm-ld) a hello_world
program and executed it successfully.

For windows I have downloaded the compiled mingw32-binaries:
http://llvm.org/releases/2.2/llvm-2.2-x86-mingw32.tar.bz2

I used the following hello_world program from the documentation:

hello_world.ll: