AArch64: update testsuite to account for new zero moves

AArch64: update testsuite to account for new zero moves

The patch series will adjust how zeros are created.  In principal it doesn't
matter the exact lane size a zero gets created on but this makes the tests a
bit fragile.

This preparation patch will update the testsuite to accept multiple variants
of ways to create vector zeros to accept both the current syntax and the one
being transitioned to in the series.

gcc/testsuite/ChangeLog:

	* gcc.target/aarch64/ldp_stp_18.c: Update zero regexpr.
	* gcc.target/aarch64/memset-corner-cases.c: Likewise.
	* gcc.target/aarch64/sme/acle-asm/revd_bf16.c: Likewise.
	* gcc.target/aarch64/sme/acle-asm/revd_f16.c: Likewise.
	* gcc.target/aarch64/sme/acle-asm/revd_f32.c: Likewise.
	* gcc.target/aarch64/sme/acle-asm/revd_f64.c: Likewise.
	* gcc.target/aarch64/sme/acle-asm/revd_s16.c: Likewise.
	* gcc.target/aarch64/sme/acle-asm/revd_s32.c: Likewise.
	* gcc.target/aarch64/sme/acle-asm/revd_s64.c: Likewise.
	* gcc.target/aarch64/sme/acle-asm/revd_s8.c: Likewise.
	* gcc.target/aarch64/sme/acle-asm/revd_u16.c: Likewise.
	* gcc.target/aarch64/sme/acle-asm/revd_u32.c: Likewise.
	* gcc.target/aarch64/sme/acle-asm/revd_u64.c: Likewise.
	* gcc.target/aarch64/sme/acle-asm/revd_u8.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/acge_f16.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/acge_f32.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/acge_f64.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/acgt_f16.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/acgt_f32.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/acgt_f64.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/acle_f16.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/acle_f32.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/acle_f64.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/aclt_f16.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/aclt_f32.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/aclt_f64.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/bic_s8.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/bic_u8.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/cmpuo_f16.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/cmpuo_f32.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/cmpuo_f64.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/dup_f16.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/dup_f32.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/dup_f64.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/dup_s16.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/dup_s32.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/dup_s64.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/dup_s8.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/dup_u16.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/dup_u32.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/dup_u64.c: Likewise.
	* gcc.target/aarch64/sve/acle/asm/dup_u8.c: Likewise.
	* gcc.target/aarch64/sve/const_fold_div_1.c: Likewise.
	* gcc.target/aarch64/sve/const_fold_mul_1.c: Likewise.
	* gcc.target/aarch64/sve/dup_imm_1.c: Likewise.
	* gcc.target/aarch64/sve/fdup_1.c: Likewise.
	* gcc.target/aarch64/sve/fold_div_zero.c: Likewise.
	* gcc.target/aarch64/sve/fold_mul_zero.c: Likewise.
	* gcc.target/aarch64/sve/pcs/args_2.c: Likewise.
	* gcc.target/aarch64/sve/pcs/args_3.c: Likewise.
	* gcc.target/aarch64/sve/pcs/args_4.c: Likewise.
	* gcc.target/aarch64/vect-fmovd-zero.c: Likewise.