* config/rl78/mulsi3.S: Remove a few unneeded moves and branches. * config/rl78/vregs.h: New. * config/rl78/signbit.S: New file. Implements signbit function. * config/rl78/divmodsi.S: New. * config/rl78/divmodhi.S: New. * config/rl78/divmodqi.S: New. * config/rl78/t-rl78: Build them here... * config/rl78/lib2div.c: ...but not here. Co-Authored-By: Nick Clifton <nickc@redhat.com> From-SVN: r202588