Enabling DAZ mode on my development P4 (1.8 GHz) doesn't seem to stick for very long. When I step through my code with VC++ 6, I see in the MXCSR register that bit 6 gets reset a single step after loading it, seemingly on its own accord.
Also, VTune continues to report loads of SIMD input assists, which shouldn't happen since I have DAZ enabled.
Has anyone seen this before? How can I make DAZ mode stick?