Ping
2015-11-23 16:05 GMT+03:00 Ilya Enkovich <enkovich....@gmail.com>: > Ping > > 2015-11-13 16:17 GMT+03:00 Ilya Enkovich <enkovich....@gmail.com>: >> 2015-11-13 13:03 GMT+03:00 Richard Biener <richard.guent...@gmail.com>: >>> On Thu, Nov 12, 2015 at 5:08 PM, Ilya Enkovich <enkovich....@gmail.com> >>> wrote: >>>> Hi, >>>> >>>> When we use LTO for fortran we may have a mix 32bit and 1bit scalar >>>> booleans. It means we may have conversion of one scalar type to another >>>> which confuses vectorizer because values with different scalar boolean >>>> type may get the same vectype. >>> >>> Confuses aka fails to vectorize? >> >> Right. >> >>> >>>> This patch transforms such conversions into comparison. >>>> >>>> I managed to make a small fortran test which gets vectorized with this >>>> patch but I didn't find how I can run fortran test with LTO and then scan >>>> tree dump to check it is vectorized. BTW here is a loop from the test: >>>> >>>> real*8 a(18) >>>> logical b(18) >>>> integer i >>>> >>>> do i=1,18 >>>> if(a(i).gt.0.d0) then >>>> b(i)=.true. >>>> else >>>> b(i)=.false. >>>> endif >>>> enddo >>> >>> This looks the the "error" comes from if-conversion - can't we do >>> better there then? >> >> No, this loop is transformed into a single BB before if-conversion by >> cselim + phiopt. >> >> Ilya >> >>> >>> Richard. >>> >>>> Bootstrapped and tested on x86_64-unknown-linux-gnu. OK for trunk? >>>> >>>> Thanks, >>>> Ilya
