On Wednesday, 21 September 2016 06:56:45 UTC+1, Chris Rackauckas wrote: > > Hi, > First of all, does LLVM essentially fma or muladd expressions like > `a1*x1 + a2*x2 + a3*x3 + a4*x4`? Or is it required that one explicitly use > `muladd` and `fma` on these types of instructions (is there a macro for > making this easier)? >
You will generally need to use muladd, unless you use @fastmath. > Secondly, I am wondering if my setup is no applying these operations > correctly. Here's my test code: > If you're using the prebuilt downloads (as opposed to building from source), you will need to rebuild the sysimg (look in contrib/build_sysimg.jl) as we build for the lowest-common architecture. -Simon
