This is a prerequisite for Mariam's CRC support.
gcc/
* config/aarch64/aarch64-simd.md (aarch64_get_lane<mode>): Add
"@" to the name.
;; RTL uses GCC vector extension indices throughout so flip only for assembly.
;; Extracting lane zero is split into a simple move when it is between SIMD
;; registers or a store.
-(define_insn_and_split "aarch64_get_lane<mode>"
+(define_insn_and_split "@aarch64_get_lane<mode>"
[(set (match_operand:<VEL> 0 "aarch64_simd_nonimmediate_operand" "=?r, w, Utv")
(vec_select:<VEL>
(match_operand:VALL_F16 1 "register_operand" "w, w, w")