[Bug target/98877] [AArch64] Inefficient code generated for tbl NEON intrinsics

[rsandifo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98877

Richard Sandiford <rsandifo at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |rsandifo at gcc dot gnu.org

--- Comment #8 from Richard Sandiford <rsandifo at gcc dot gnu.org> ---
The reason early_ra doesn't help with the original testcase is that early_ra
punts on any non-move instruction that has a hard register destination.  And it
does that because it can't cope well with cases where hard-coded destinations
force the wrong choice (unlike the proper allocators, which can change the
destination where necessary).  The restriction is needed to avoid regressing
SVE ACLE tests.