Maciej W. Rozycki writes: > > On Thu, 5 Sep 2002, Daniel Jacobowitz wrote: > > > No - the point is that all data types have the same size in N32. It > > was created explicitly as a transitional sop for people who didn't want > > to fix their code, but wanted a performance increase from their 64-bit > > hardware. > > Well, what's the performance increase of n32 over o32? The increased > number of argument registers? I doubt it's noticeable in most cases. The technical benefits of n32 over o32 are: * More argument registers => less memory traffic, less D-cache use, => faster code * 64-bit datapath of CPU can be utilized with big impact on certain applications * 32 floating point registers instead of 16 (and more efficient parameter passing as well) /Hartvig
