[AARCH64] Add support for floating-point vcond.

[AARCH64] Add support for floating-point vcond.

gcc/
	* config/aarch64/aarch64-simd.md
	(aarch64_simd_bsl<mode>_internal): Add floating-point modes.
	(aarch64_simd_bsl): Likewise.
	(aarch64_vcond_internal<mode>): Likewise.
	(vcond<mode><mode>): Likewise.
	(aarch64_cm<cmp><mode>): Fix constraints, add new modes.
	* config/aarch64/iterators.md (V_cmp_result): Add V2DF.

gcc/testsuite/
	* gcc/testsuite/gcc.target/aarch64/vect-fcm-eq-d.c: New.
	* gcc/testsuite/gcc.target/aarch64/vect-fcm-eq-f.c: Likewise.
	* gcc/testsuite/gcc.target/aarch64/vect-fcm-ge-d.c: Likewise.
	* gcc/testsuite/gcc.target/aarch64/vect-fcm-ge-f.c: Likewise.
	* gcc/testsuite/gcc.target/aarch64/vect-fcm-gt-d.c: Likewise.
	* gcc/testsuite/gcc.target/aarch64/vect-fcm-gt-f.c: Likewise.
	* gcc/testsuite/gcc.target/aarch64/vect-fcm.x: Likewise.
	* gcc/testsuite/lib/target-supports.exp
	(check_effective_target_vect_cond): Enable for AArch64.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@195018 138bc75d-0d04-0410-961f-82ee72b054a4