https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108019
Richard Earnshaw <rearnsha at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |INVALID Status|UNCONFIRMED |RESOLVED --- Comment #6 from Richard Earnshaw <rearnsha at gcc dot gnu.org> --- d16 is a call-clobbered register in the ABI. There is no need for the compiler to save it before use.