addGlobalAssumeCapacity

pub fn addGlobalAssumeCapacity(self: *Builder, name: StrtabString, global: Global) Global.Index {
    _ = self.ptrTypeAssumeCapacity(global.addr_space);
    var id = name;
    if (name == .empty) {
        id = self.next_unnamed_global;
        assert(id != self.next_replaced_global);
        self.next_unnamed_global = @fromBackingInt(@backingInt(id) + 1);
    }
    while (true) {
        const global_gop = self.globals.getOrPutAssumeCapacity(id);
        if (!global_gop.found_existing) {
            global_gop.value_ptr.* = global;
            const global_index: Global.Index = @fromBackingInt(@intCast(global_gop.index));
            global_index.updateDsoLocal(self);
            return global_index;
        }

        const unique_gop = self.next_unique_global_id.getOrPutAssumeCapacity(name);
        if (!unique_gop.found_existing) unique_gop.value_ptr.* = 2;
        id = self.strtabStringFmtAssumeCapacity("{s}.{d}", .{ name.slice(self).?, unique_gop.value_ptr.* });
        unique_gop.value_ptr.* += 1;
    }
}