Hi! On Wed, Mar 04, 2020 at 03:13:51PM +0800, Kewen.Lin wrote: > As PR94019 shows, without misaligned vector access support but with > realign load, the vectorized loop will end up with realign scheme. > It generates mask (control vector) with return type vector signed > char which breaks the not check. > > The fix is to differentiate powerpc vect_hw_misalign and powerpc > !vect_hw_misalign, permit one vector char occurance for powerpc > !vect_hw_misalign and keep other targets same as before. > > Verified it on ppc64-redhat-linux (Power7 BE). > > Is it ok for trunk, and backport to GCC 9 after some burn-in time?
Why is any of this Power-specific? Does it work on other targets if !vect_hw_misalign? The patch is fine everywhere as far as the rs6000 port is concerned, but I'd like someone else who actually understands this stuff to have a look at it as well ;-) Segher
