On Dec 31, 2008, at 6:15 AM, Alex wrote: > Chris Lattner wrote: >> The direction we're going is to expose more and more vector >> operations in >> LLVM IR. For example, compares and select are currently being >> worked on, >> so you can do a comparison of two vectors which returns a vector of >> bools, >> and use that as the compare value of a select instruction >> (selecting between >> two vectors). This would allow implementing min and a variety of >> other >> operations and is easier for the codegen to reassemble into a first- >> class >> min operation etc. > > With the motivation of making the codegen easier to reassemble the > first-class > operations, do you also mean that there will be vector version of > add, sub, > mul, which are usually supported by many vector GPU?
Yep, LLVM already fully supports those, just use the normal add/sub/ mul etc operations. If unsupported by a target, they are converted to scalar operations, or vectors of a different type where possible. I'll let others respond to the Gallium-specific portions of your email, -Chris ------------------------------------------------------------------------------ _______________________________________________ Mesa3d-dev mailing list Mesa3d-dev@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mesa3d-dev
