aarch64: AND/BIC combines for unpacked SVE FP comparisons

aarch64: AND/BIC combines for unpacked SVE FP comparisons

This patch extends the splitting patterns for combining FP comparisons
with predicated logical operations such that they cover all of SVE_F.

gcc/ChangeLog:

	* config/aarch64/aarch64-sve.md (*fcm<cmp_op><mode>_and_combine):
	Extend from SVE_FULL_F to SVE_F.
	(*fcmuo<mode>_and_combine): Likewise.
	(*fcm<cmp_op><mode>_bic_combine): Likewise.
	(*fcm<cmp_op><mode>_nor_combine): Likewise.
	(*fcmuo<mode>_bic_combine): Likewise.
	(*fcmuo<mode>_nor_combine): Likewise.  Move the comment here to
	above fcmuo<mode>_bic_combine, since it applies to both patterns.

gcc/testsuite/ChangeLog:

	* gcc.target/aarch64/sve/unpacked_fcm_combines_1.c: New test.
	* gcc.target/aarch64/sve/unpacked_fcm_combines_2.c: Likewise.