* lib1funcs.asm (sdivsi3): Add optimized SH64 implementations.
	(udivsi3): Likewise.  Rewrite SH1 implementation.
	(udivdi3, divdi3, umoddi3, moddi3): New SHmedia functions.
	* sh.md (R20_REG, R21_REG, R22_REG, R23_REG, FR23_REG): New constants.
	(udivsi3_i1_media, divsi3_i1_media): Fix clobber list.
	* config/sh/t-sh64 (LIB1ASMFUNCS): (_udivdi3, _divdi3, _umoddi3): Add.
	(_moddi3): Likewise.

	* lib1funcs.asm (ic_invalidate): Add data cache line writeback.

From-SVN: r54965