rl78.c (rl78_asm_file_start): Specify alternate vregs location for RL78/G10.

rl78.c (rl78_asm_file_start): Specify alternate vregs location for RL78/G10.

* config/rl78/rl78.c (rl78_asm_file_start): Specify alternate
vregs location for RL78/G10.
(rl78_expand_prologue): Avoid SEL on G10.
(rl78_expand_epilogue): Likewise.
(rl78_peep_movhi_p): Can't move a constant to memory in HImode.
* config/rl78/rl78.h (TARGET_CPU_CPP_BUILTINS): Define
__RL78_G10__ when appropriate.
(ASM_SPEC): Pass -mg10 along to the assembler.
* config/rl78/rl78.md (sel_rb): Disable for G10.
* config/rl78/rl78.opt: Add -mg10 option.
* config/rl78/t-rl78: Add -mg10 multilib.

* config/rl78/lib2mul.c: Enable for RL78/G10.
* config/rl78/lib2div.c: Likewise.
* config/rl78/lshrsi3.S: Use vregs.h.
* config/rl78/cmpsi2.S: Likewise.
* config/rl78/trampoline.S: Likewise.
* config/rl78/mulsi2.S: Likewise.  Disable for RL78/G10.

From-SVN: r202637