https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93771
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2020-02-17
CC| |rguenth at gcc dot gnu.org
Blocks| |53947
Ever confirmed|0 |1
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. I'm not sure if we should try to "fix" SLP here or rather
appropriately optimize
v2df tem1 = *(v2df *)&t[0];
v2df tem2 = *(v2df *)&t[2];
__builtin_shuffle (tem1, tem2 (v2di) { 0, 3 });
which the user could write itself. forwprop does some related transforms
splitting loads in "Rewrite loads used only in BIT_FIELD_REF extractions to
component-wise loads."
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947
[Bug 53947] [meta-bug] vectorizer missed-optimizations
