[Bug tree-optimization/68050] SLP vectorization should negate constants to match up + vs -

2021-08-30 Thread rguenth at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68050 --- Comment #3 from Richard Biener --- We don't really do it as you show - instead of vect__5.7_12 = vect__1.5_14 + { -3.0e+0, -3.0e+0 }; vect__2.6_13 = vect__1.5_14 + { 3.0e+0, 3.0e+0 }; _7 = VEC_PERM_EXPR ; we'd like to see _7 = vect

[Bug tree-optimization/68050] SLP vectorization should negate constants to match up + vs -

2021-08-28 Thread pinskia at gcc dot gnu.org via Gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68050 Andrew Pinski changed: What|Removed |Added Last reconfirmed|2015-10-22 00:00:00 |2021-8-28 --- Comment #2 from Andrew Pin

[Bug tree-optimization/68050] SLP vectorization should negate constants to match up + vs -

2016-08-03 Thread pinskia at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68050 Andrew Pinski changed: What|Removed |Added Keywords||missed-optimization CC|

[Bug tree-optimization/68050] SLP vectorization should negate constants to match up + vs -

2015-10-22 Thread rguenth at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68050 Richard Biener changed: What|Removed |Added Status|UNCONFIRMED |ASSIGNED Last reconfirmed|