Hi, Renato I'm also working on simd cost model for arm neon on Gcc. I would like to discuss this topic with you thoroughly.
If you think it's a good idea, please send me an email. Best regards Tao Wang ICT, CAS > -----Original Messages----- > From:"Renato Golin" <renato.go...@linaro.org> > Sent Time:Wednesday, January 9, 2013 > To:"Linaro Toolchain" <linaro-toolchain@lists.linaro.org> > Cc: > Subject:Re: Instruction costs for ARM/NEON > > > > Nevermind, I found exactly what I was looking for in Infocenter: > > > http://infocenter.arm.com/help/topic/com.arm.doc.ddi0409i/DDI0409I_cortex_a9_neon_mpe_r4p1_trm.pdf > > > > cheers, > --renato > > > > On 9 January 2013 13:35, Renato Golin <renato.go...@linaro.org>wrote: > > > > > Hi all, > > > > > > I'm helping the loop vectorization in LLVM and for that we need first to > > build the instruction cost model so we can decide whether the vectorization > > is worth or not. > > > > > > I was looking at some papers, but most of them concern with energy > > consumption, which is not the issue (at least not for now). The "cost" > > model should take the point of view of latency, stalls and pipeline cost. > > > > > > I know there are sporadic comments on this on the ARM ARM, but would be > > good to have a definite resource where to get the data from (and hope it's > > a public document). Does anyone know of a good place to start looking for > > that? > > > > > > Even if the document is private, we can certainly hide the information > > enough to make it to the LLVM code base. > > > > > > cheers, > > --renato > _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-toolchain
