[Bug rtl-optimization/105023] new test case g++.dg/other/pr104989.C ICEs

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105023

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
But reg:BLK is exactly what the backend emits.
Both on the 2 testcases mentioned above (on which there is an ICE afterwards)
and say on:
struct a {
  short b : 2048;
};
void c(...) { c(a()); }
which doesn't ICE.  rs6000_function_arg still returns (reg:BLK 3 3).