They are SOE only on Win64. On 32 bit Win they are SOC as on other OSs. Vladimir On 7/24/12 8:02 AM, Deneau, Tom wrote: > I noticed in stubGenerator_x86_32.cpp, in the routine xmm_copy_forward, > that registers xmm6 and xmm7 are used, which are SaveOnEntry on Windows OS, > but I didn't see them being saved anywhere. > > -- Tom > >