On Fri, Jun 15, 2012 at 1:57 PM, Richard Henderson <r...@redhat.com> wrote: > ... but not actually fixing it. > > I was hoping that the first patch might give the vectorizer enough > info to solve the costing problem, but no such luck. Nevertheless > it would seem that not having the info present at all would be a > bit of a hindrence when actually tweeking the vectorizer later... > > FYI the "equivalence" of fabs/fmul in the integer simd costing is > based upon the AMD K8 document I had handy. I don't know that I've > ever seen proper latencies and such for the Intel cpus? >
Latency/throughput info is in Intel optimization reference manual. Which instructions aren't covered? -- H.J.
