Comment # 3 on bug 79575 from Henri Verbeet

For what it's worth, test_fpu_setup() tests creating a D3D device with a custom
FPU control word. (The background on that is that creating a D3D device should
setup the FPU in a specific way, depending on if D3DCREATE_FPU_PRESERVE is
specified or not.) My guess would be that something in llvm doesn't expect to
be called with a non-default FPU control word.