https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98774
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Last reconfirmed| |2021-01-21
Status|UNCONFIRMED |NEW
Blocks| |53947
Ever confirmed|0 |1
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
There's
t.ii:21:9: note: ==> examining statement: a$x_1 = *dpos_10(D).x;
t.ii:21:9: missed: BB vectorization with gaps at the end of a load is not
supported
t.ii:27:6: missed: not vectorized: relevant stmt not supported: a$x_1 =
*dpos_10(D).x;
t.ii:21:9: note: Building vector operands of 0x4047278 from scalars instead
which we eventually can improve. With AVX2 we split into one AVX and one SSE
part and then run into a duplicate PR where we end up with conflicting
vector types for a load which we do not yet support. We then end up with
only vectorizing the AVX part.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947
[Bug 53947] [meta-bug] vectorizer missed-optimizations
