[PATCH] add section caches to coff_data_type

[Tom Tromey]

>>>>> Oleg Tolmatcev via Binutils <binutils@sourceware.org> writes:

> Hello all,
> final patch to ld. All the patches together improve linking
> performance from 9 minutes to 1 minute when linking rpcs3 in debug
> mode with BUILD_LLVM=ON.

> +  pe->coff.section_by_index
> +      = htab_create (10, htab_hash_section_index, htab_eq_section_index, NULL);
> +  pe->coff.section_by_target_index = htab_create (
> +      10, htab_hash_section_target_index, htab_eq_section_target_index, NULL);

I think something has to call htab_delete on these to avoid a memory leak.

Tom