Mark Wielaard <m...@klomp.org> writes:
> commit 56946c801a7c ("gimple: Add limit after which slower switchlower
> algs are used [PR117091] [PR117352]") introduced a limit on the number
> of cases of a switch. It also bails out on finding jump tables if the
> switch is too large. This introduces a compile time regression during
> bootstrap. A riscv bootstrap takes hours longer. Particularly
> insn-attrtab.cc will take hours instead of minutes. Fix this by not
> applying the switch size limit on jump tables.
>
> An alternative would be to implement greedy switch clustering for jump
> tables as is done for switch bitmap clustering.
Or just increase the limit for now. But looks ok to me.
-Andi
