Yes, LLVM codegen improvements are the best way to accomplish this since then everyone everywhere benefits.
On Sat, Nov 22, 2014 at 3:38 PM, Erik Schnetter <schnet...@cct.lsu.edu> wrote: > You may also be able to use <https://github.com/Keno/Cxx.jl> to write > your C code, which should ensure that it is inlined. > > Also -- are you sure that LLVM's vectorizer can't be convinced to > generate these instructions automatically? I know this is not possible > in all cases (I wish!), but there's been a lot of recent work on > improving the vectorizer, and the current code quality is an order of > magnitude better than last year. > > -erik > > On Sat, Nov 22, 2014 at 3:26 PM, Stefan Karpinski <ste...@karpinski.org> > wrote: > > You can already inline assembly into llvm so it's not super clean but it > can > > be done. > > > > On Sat, Nov 22, 2014 at 3:15 PM, Isaiah Norton <isaiah.nor...@gmail.com> > > wrote: > >> > >> If it is exposed in some form by LLVM, you might be able to use > llvmcall. > >> See https://github.com/JuliaLang/julia/pull/5046 > >> (and possibly also https://github.com/JuliaLang/julia/pull/8740) > >> > >> Eventually I believe we will have a similar `asmcall` feature. > >> > >> > >> On Sat, Nov 22, 2014 at 2:58 PM, eric l <cdg2...@gmail.com> wrote: > >>> > >>> Is there a plan for some sort of intrinsics in Julia? The most recent > >>> iterations of the x86 ISA have things like pext that > >>> extract specific bits in a dw, or qw and pack them together. > >>> Currently to use an instruction like that I define a C function create > a > >>> shared lib and make a ccall. > >>> This is rather sub optimal and the function while very simple is not > >>> inlined obviously... > >>> > >>> Thanks, > >>> > >>> -ETL > >> > >> > > > > > > -- > Erik Schnetter <schnet...@cct.lsu.edu> > http://www.perimeterinstitute.ca/personal/eschnetter/ >
