[Bug tree-optimization/99746] [11 Regression] ICE in vect_get_vec_defs_for_operand, at tree-vect-stmts.c:1450

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99746

--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Tamar Christina from comment #7)
> the problem starts because it marks _50 as hybrid, but don't see why it
> thinks that...

Because

t.f:36:16: note:   Processing hybrid candidate : IMAGPART_EXPR
<(*a_117(D))[_73]> = _189;
t.f:36:16: note:   Found loop_vect sink: IMAGPART_EXPR <(*a_117(D))[_73]> =
_189;
t.f:36:16: note:   Processing hybrid candidate : REALPART_EXPR
<(*a_117(D))[_73]> = _188;
t.f:36:16: note:   Found loop_vect sink: REALPART_EXPR <(*a_117(D))[_73]> =
_188;

so there are not SLPed stores which makes the whole use-def chain of
_189 and _188 loop vectorized (and hybrid if it has common pieces using SLP
vectorization).