[Bug middle-end/109840] [14 Regression] internal compiler error: in expand_fn_using_insn, at internal-fn.cc:153 when building graphite2

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109840

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Now the aarch64 backend could add hi and qi patterns for popcount.

For the TARGET_CSSC case, it would need to zero extend to SImode.
For the !TARGET_CSSC case, it would also zero extend but instead to DImode
(just like SImode case).


But I am not 100% sure there might be other backends that would need this.

Now the expansion of the popcount Internal function could do the zero extend
but that is not what the internal function is for ...