[Bug target/12081] Gcc can't be compiled with -mregparm=3

[mikpe at it dot uu.se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12081

--- Comment #22 from Mikael Pettersson <mikpe at it dot uu.se> ---
FWIW, the updated patch for gcc 4.9 bootstraps and regtests cleanly on several
hosts (x86_64, sparc64, powerpc64, armv5tel, m68k).