https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111366
Kewen Lin <linkw at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |INVALID Status|UNCONFIRMED |RESOLVED CC| |linkw at gcc dot gnu.org --- Comment #9 from Kewen Lin <linkw at gcc dot gnu.org> --- It looks to me that the error message is expected, because the source code forces the function as always_inline, users would like it to be inlined always, it's compiled with -mcpu=power10 as pragma function target specifies, but the caller is compiled with -mcpu=power9 as command line specifies, the caller doesn't have the full ISA capability over the callee, it's unable to make inlining happen.