[Bug target/101611] AVX2 vector arithmetic shift lowered to scalar unnecessarily

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101611 Andrew Pinski changed: What|Removed |Added Target Milestone|--- |12.0

[Bug target/101611] AVX2 vector arithmetic shift lowered to scalar unnecessarily

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101611 Jakub Jelinek changed: What|Removed |Added Resolution|--- |FIXED Status|ASSIGNED

[Bug target/101611] AVX2 vector arithmetic shift lowered to scalar unnecessarily

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101611 --- Comment #9 from CVS Commits --- The master branch has been updated by Jakub Jelinek : https://gcc.gnu.org/g:88d0f70a326eeb42b479aa537f8a81bf5a199346 commit r12-2557-g88d0f70a326eeb42b479aa537f8a81bf5a199346 Author: Jakub Jelinek Date:

[Bug target/101611] AVX2 vector arithmetic shift lowered to scalar unnecessarily

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101611 --- Comment #8 from Jakub Jelinek --- That is true, but I think even for vector >> scalar and scalar >> scalar shifts it will be quite rare to support logical and not support arithmetic shifts. And on x86, as can be seen in the PR98856 changes,

[Bug target/101611] AVX2 vector arithmetic shift lowered to scalar unnecessarily

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101611 --- Comment #7 from Marc Glisse --- The same strategy to implement arithmetic shift in terms of logical shift works not just for vector>>vector but also vector>>scalar and scalar>>scalar. But it is probably not worth the trouble indeed,

[Bug target/101611] AVX2 vector arithmetic shift lowered to scalar unnecessarily

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101611 --- Comment #6 from Jakub Jelinek --- I think except for x86 it is very unusual to support logical but not arithmetic vector right shifts, are you aware of any other target that suffers from these? Even vector by vector shifts are rare, if my

[Bug target/101611] AVX2 vector arithmetic shift lowered to scalar unnecessarily

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101611 --- Comment #5 from Marc Glisse --- (In reply to Jakub Jelinek from comment #2) > for arithmetic V[24]DImode >> V[24]DImode > logical ((x >> y) ^ (0x8000ULL >> y)) - (0x8000ULL > >> y) > can be used. I guess it would be

[Bug target/101611] AVX2 vector arithmetic shift lowered to scalar unnecessarily

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101611 --- Comment #4 from Jakub Jelinek --- Created attachment 51205 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51205=edit gcc12-pr101611.patch Full untested fix.

[Bug target/101611] AVX2 vector arithmetic shift lowered to scalar unnecessarily

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101611 Jakub Jelinek changed: What|Removed |Added Status|NEW |ASSIGNED --- Comment #3 from Jakub

[Bug target/101611] AVX2 vector arithmetic shift lowered to scalar unnecessarily

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101611 Jakub Jelinek changed: What|Removed |Added CC||jakub at gcc dot gnu.org --- Comment

[Bug target/101611] AVX2 vector arithmetic shift lowered to scalar unnecessarily

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101611 H.J. Lu changed: What|Removed |Added Last reconfirmed||2021-07-24 Status|UNCONFIRMED