search for: 7m39s

Hi Keno, Thanks for the fast ISel suggestion. Here are the results (for a small but representational run): LLVM 3.5.2 (old JIT): 4m44s LLVM 3.7.1 (MCJit) no fast ISel: 7m31s LLVM 3.7.1 (MCJit) fast ISel: 7m39s So not much of a difference unfortunately. On 05/02/16 11:05, Keno Fischer wrote: > Yes, unfortunately, this is very much known. Over in the julia > project, we've recently gone through this and taken the hit (after > doing some work to fix the very extreme corner cases that we wer...

...> wrote: > > Hi Keno, > > Thanks for the fast ISel suggestion. > > Here are the results (for a small but representational run): > > LLVM 3.5.2 (old JIT): 4m44s > > LLVM 3.7.1 (MCJit) no fast ISel: 7m31s > > LLVM 3.7.1 (MCJit) fast ISel: 7m39s > > So not much of a difference unfortunately. > > > On 05/02/16 11:05, Keno Fischer wrote: >> Yes, unfortunately, this is very much known. Over in the julia >> project, we've recently gone through this and taken the hit >> (after doing some...

Hi All, We recently upgraded a number of applications from LLVM 3.5.2 (old JIT) to LLVM 3.7.1 (MCJit). We made the minimum changes needed for the switch (no changes to the IR generated or the IR optimizations applied). The resulting code pass all tests (8000+). However the runtime performance dropped significantly: 30% to 40% for all applications. The applications I am talking about