m68hc11.md ("bitcmpqi" split): No need to test the mode of operand 0.
* config/m68hc11/m68hc11.md ("bitcmpqi" split): No need to test the
mode of operand 0.
(peephole2 optimize const load): Likewise for operand 2.
("*rotlhi3_with_carry"): Change pattern to a const 1 rotate which
clobbers CC_REGNUM.
("*rotrhi3_with_carry"): Likewise.
(ashift:DI 1 split): Update pattern to create the above rotate.
(lshiftrt:DI 1 split): Likewise.