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...1. Since -reassociate isn't a fixed point pass, > This is fixable, fwiw, without fixpointing it. > we might need to repeat "-instcombine -reassociate" multiple times to > ​fold > down to what we want (relating to my comment here > <https://reviews.llvm.org/D46336#1087082>). I assumed this isn't not what > we want to do > ​? My impression is we don't do a fixed-point with passes? > Well, i mean there is no practical difference between passes that we fixpoint externally and fixpoint internally. > > 2. > ​Since -reassociate needs to com...

...itional ones ​,​ out of instcombine, ​open questions for me would be ​​: 1. Since -reassociate isn't a fixed point pass, we might need to repeat "-instcombine -reassociate" multiple times to ​fold down to what we want (relating to my comment here <https://reviews.llvm.org/D46336#1087082>). I assumed this isn't not what we want to do ​? My impression is we don't do a fixed-point with passes? 2. ​Since -reassociate needs to come up with one operand order (at least currently as the only reassociate pass), would there exist a single, unique operand order that would enable...

...ecifically which part you would like to know about ;) > > >> >>> we might need to repeat "-instcombine -reassociate" multiple times to >>> ​fold >>> down to what we want (relating to my comment here >>> <https://reviews.llvm.org/D46336#1087082>). I assumed this isn't not >>> what we want to do >>> ​? My impression is we don't do a fixed-point with passes? >>> >> >> Well, i mean there is no practical difference between passes that we >> fixpoint externally and fixpoint internally. &g...

...pass, >> > > This is fixable, fwiw, without fixpointing it. > How? > >> we might need to repeat "-instcombine -reassociate" multiple times to >> ​fold >> down to what we want (relating to my comment here >> <https://reviews.llvm.org/D46336#1087082>). I assumed this isn't not >> what we want to do >> ​? My impression is we don't do a fixed-point with passes? >> > > Well, i mean there is no practical difference between passes that we > fixpoint externally and fixpoint internally. > ​​ I had the followin...

...s management change. > >> >> >>> >>>> we might need to repeat "-instcombine -reassociate" multiple times to >>>> ​fold >>>> down to what we want (relating to my comment here >>>> <https://reviews.llvm.org/D46336#1087082>). I assumed this isn't not >>>> what we want to do >>>> ​? My impression is we don't do a fixed-point with passes? >>>> >>> >>> Well, i mean there is no practical difference between passes that we >>> fixpoint externally and...

There are at least 3 active proposals to add reassociative optimizations in IR: [1] D41574 <https://reviews.llvm.org/D41574>- a new pass for reassociation/factoring [2] D46336 <https://reviews.llvm.org/D46336> - enhance -instcombine to do more reassociation/factoring [3] D45842 <https://reviews.llvm.org/D45842> - add to the existing -reassociate pass to enable factoring

...>>> >>> >>>> >>>>> we might need to repeat "-instcombine -reassociate" multiple times to >>>>> ​fold >>>>> down to what we want (relating to my comment here >>>>> <https://reviews.llvm.org/D46336#1087082>). I assumed this isn't not >>>>> what we want to do >>>>> ​? My impression is we don't do a fixed-point with passes? >>>>> >>>> >>>> Well, i mean there is no practical difference between passes that we >>>>...

...;> >>>>> >>>>>> we might need to repeat "-instcombine -reassociate" multiple times to >>>>>> ​fold >>>>>> down to what we want (relating to my comment here >>>>>> <https://reviews.llvm.org/D46336#1087082>). I assumed this isn't not >>>>>> what we want to do >>>>>> ​? My impression is we don't do a fixed-point with passes? >>>>>> >>>>> >>>>> Well, i mean there is no practical difference between passes that...

...t;>> we might need to repeat "-instcombine -reassociate" multiple times >>>>>>> to >>>>>>> ​fold >>>>>>> down to what we want (relating to my comment here >>>>>>> <https://reviews.llvm.org/D46336#1087082>). I assumed this isn't >>>>>>> not what we want to do >>>>>>> ​? My impression is we don't do a fixed-point with passes? >>>>>>> >>>>>> >>>>>> Well, i mean there is no practical difference...

...bine > -reassociate" multiple times to > ​fold >  down to what we want (relating to my > comment here > <https://reviews.llvm.org/D46336#1087082>). > I assumed this isn't not what we want to do > ​? My impression is we don't do a > fixed-point with passes? > > > Well, i mean there is no practical differenc...

...ght need to repeat "-instcombine -reassociate" multiple times >>>>>>>> to >>>>>>>> ​fold >>>>>>>> down to what we want (relating to my comment here >>>>>>>> <https://reviews.llvm.org/D46336#1087082>). I assumed this isn't >>>>>>>> not what we want to do >>>>>>>> ​? My impression is we don't do a fixed-point with passes? >>>>>>>> >>>>>>> >>>>>>> Well, i mean there is no...

...at "-instcombine -reassociate" multiple times >>>>>>>>> to >>>>>>>>> ​fold >>>>>>>>> down to what we want (relating to my comment here >>>>>>>>> <https://reviews.llvm.org/D46336#1087082>). I assumed this isn't >>>>>>>>> not what we want to do >>>>>>>>> ​? My impression is we don't do a fixed-point with passes? >>>>>>>>> >>>>>>>> >>>>>>>> Well,...