Richard Biener <richard.guent...@gmail.com> writes: > Richard Sandiford <rdsandif...@googlemail.com> wrote: >>Richard Biener <richard.guent...@gmail.com> writes: >>> On Fri, Nov 29, 2013 at 12:14 PM, Richard Sandiford >>> <rdsandif...@googlemail.com> wrote: >>>> In the fold-const.ii testcase, well over half of the mul_internal >>calls >>>> were for multiplication by 0 (106038 out of 169355). This patch >>adds >>>> an early-out for that. >>>> >>>> Tested on x86_64-linux-gnu. OK to install? >>> >>> Ok. Did you check how many of the remaining are multiplies by 1? >> >>Turns out to be 9685, which is probably enough to justify a special >>case. >> >>Tested on x86_64-linux-gnu. OK to install? > > Ok. I assume we already have a special.case for division by 1?
I don't think it's really worth having one there. If the inputs fit into single HWIs then the output does too, so we can just use a host division. Thanks, Richard
