prevent unneeded calculation of Slow()
prevent unneeded calculation of Slow()

subailong/benchmark,gezidan/benchmark,quantumsteve/benchmark,bowlofstew/benchmark,subailong/benchmark,ntx-/benchmark,everbase/benchmark,gezidan/benchmark,chandlerc/benchmark,Photonomie/benchmark,codygray/benchmark,efcs/benchmark,Photonomie/benchmark,fuchsia-mirror/third_party-benchmark,LepelTsmok/benchmark,quantumsteve/benchmark,eliben/benchmark,disconnect3d/benchmark,mockingbirdnest/benchmark,chandlerc/benchmark,mockingbirdnest/benchmark,eliben/benchmark,everbase/benchmark,codygray/benchmark,chandlerc/benchmark,nickhutchinson/benchmark,eliben/benchmark,everbase/benchmark,quantumsteve/benchmark,disconnect3d/benchmark,bowlofstew/benchmark,subailong/benchmark,ntx-/benchmark,efcs/benchmark,LepelTsmok/benchmark,fuchsia-mirror/third_party-benchmark,everbase/benchmark,LepelTsmok/benchmark,chemhack/benchmark,subailong/benchmark,xlqian/benchmark,chemhack/benchmark,mockingbirdnest/benchmark,google/benchmark,disconnect3d/benchmark,nickhutchinson/benchmark,bowlofstew/benchmark,ntx-/benchmark,google/benchmark,ntx-/benchmark,xlqian/benchmark,chandlerc/benchmark,gezidan/benchmark,mockingbirdnest/benchmark,disconnect3d/benchmark,efcs/benchmark,codygray/benchmark,eliben/benchmark,nickhutchinson/benchmark-cxx03,efcs/benchmark,xlqian/benchmark,codygray/benchmark,gezidan/benchmark,fuchsia-mirror/third_party-benchmark,Photonomie/benchmark,nickhutchinson/benchmark-cxx03,fuchsia-mirror/third_party-benchmark,chemhack/benchmark,LepelTsmok/benchmark,google/benchmark,quantumsteve/benchmark,xlqian/benchmark,chemhack/benchmark,Photonomie/benchmark,nickhutchinson/benchmark,nickhutchinson/benchmark-cxx03,bowlofstew/benchmark,nickhutchinson/benchmark-cxx03,nickhutchinson/benchmark