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Rewrite [su]mlal_high_n Neon intrinsics to use RTL builtins rather than inline assembly code, allowing for better scheduling and optimization. gcc/ChangeLog: 2021-01-27 Jonathan Wright <jonathan.wright@arm.com> * config/aarch64/aarch64-simd-builtins.def: Add [su]mlal_hi_n builtin generator macros. * config/aarch64/aarch64-simd.md (aarch64_<su>mlal_hi_n<mode>_insn): Define. (aarch64_<su>mlal_hi_n<mode>): Define. * config/aarch64/arm_neon.h (vmlal_high_n_s16): Use RTL builtin instead of inline asm. (vmlal_high_n_s32): Likewise. (vmlal_high_n_u16): Likewise. (vmlal_high_n_u32): Likewise.
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