[Bug target/51980] ARM - Neon code polluted by useless stores to the stack with vuzpq / vzipq / vtrnq

[christophe.lyon at st dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51980

christophe.lyon at st dot com changed:

           What    |Removed                     |Added
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                 CC|                            |christophe.lyon at st dot com

--- Comment #14 from christophe.lyon at st dot com ---
As of current trunk the softfp case looks like this:
sqrlen4D_16u8:
        vmov    d16, r0, r1  @ v16qi
        vmov    d17, r2, r3
        vld1.64 {d18-d19}, [sp:64]
        vabd.u8 q9, q8, q9
        vmull.u8        q8, d18, d18
        vmull.u8        q9, d19, d19
        vuzp.32 q8, q9
        vpaddl.u16      q8, q8
        vpadal.u16      q8, q9
        vmov    r0, r1, d16  @ v4si
        vmov    r2, r3, d17
        bx      lr

which looks quite good.