Microbenchmark System.Numerics.Tests.Perf_BitOperations.PopCount_ulongis 464 % slower on Wasm vs. desktop interpreter. [Repro Instructions for running benchmarks locally](https://gist.github.com/naricc/efdc186951a912507550509b21fb992b) [Results page when reported.](https://pvscmdupload.blob.core.windows.net/reports/08_26_2020/report_Daily_ca=x64_cb=refs-heads-master_co=Ubuntu1804_cr=dotnetruntime_cc=CompliationMode=wasm-RunKind=micro_Baseline_bc=CompliationMode=tiered-LLVM=false-MonoAOT=false-MonoInterpreter=true-RunKind=micro_mono_2020-08-26.html#Regressions ) [Automated runs](https://pvscmdupload.blob.core.windows.net/index/index/index.html)