[PATCH] D24728: [ARM][LLD] Add support for .ARM.exidx sections

[Rafael Espíndola via llvm-commits]

BTW, it looks like both bfd and gold will merge sections with -r. The
only difference seems two be that they don't process the section name
in -r mode. That is, .text.f and .text.g remain independent sections,
but given

        .section        .text,"ax",%progbits,unique,1
        .fnstart
        b       external
        .cantunwind
        .fnend

        .section        .text,"ax",%progbits,unique,2
        .fnstart
        b       external
        .cantunwind
        .fnend



both gold and bfd produce a single .text and a single .ARM.exidx.

Cheers,
Rafael