[AArch64][v2] Improve comparison with complex immediates followed by branch/cset

[AArch64][v2] Improve comparison with complex immediates followed by branch/cset

	* config/aarch64/aarch64.md (*condjump): Rename to...
	(condjump): ... This.
	(*compare_condjump<mode>): New define_insn_and_split.
	(*compare_cstore<mode>_insn): Likewise.
	(*cstore<mode>_insn): Rename to...
	(cstore<mode>_insn): ... This.
	* config/aarch64/iterators.md (CMP): Handle ne code.
	* config/aarch64/predicates.md (aarch64_imm24): New predicate.

	* gcc.target/aarch64/cmpimm_branch_1.c: New test.
	* gcc.target/aarch64/cmpimm_cset_1.c: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@230805 138bc75d-0d04-0410-961f-82ee72b054a4