https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67683
Hongtao Liu <liuhongt at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |liuhongt at gcc dot gnu.org
--- Comment #6 from Hongtao Liu <liuhongt at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #5)
> /app/example.cpp:5:20: note: vect_is_simple_use: operand # RANGE [irange]
> short unsigned int [0, 2047][3294, 3294][6589, 6589][13179, 13179][26359,
> 26359][52719, 52719]
> val_16 = PHI <val_11(6), 52719(5)>, type of def: induction
>
> We detect it now.
> But then it is still not vectorized ...
We don't know how to peel for variable niter, there could be UD if we peel it
like val(epilogue) = val >> (max / vf) * vf.
