Any ideas what this is?

This is in a friends garden neither of us can remember if it has flowers at any point. It's low growing sort of spreading. Not sure if it's a "keeper" or not!
I've taken a couple of photos to try and show the stems and leaves.Google says it could be Coreopsis, lavender (definitely not) or Tarragon!!

 

Does it have any smell if you crush the leaves?

 

Digging around a bit more, Google came up with -
Lepidium ruderale (stinking pepperweed)

 

Looks like Iberis Sempervirens to me. It has white flowers in spring.

 

I agree with @Busy-Lizzie . I have it in several places. There are a few varieties, but they're all pretty much the same. They're very useful ground cover, and the flowers are sturdy. Easy from cuttings too.
I don't have a pic of it in flower this year or last, and to go further back I'd have to load the extra thing I have for storing pix, but you'll get plenty of photos online if you look @Millie16

 

Iberis Sempervirens..pics

 

Another vote for Iberis sempervirens (common name around here is perennial candytuft, not to be confused with the pink/lilac annual one).

 

Thanks for the replies, there's no smell from the leaves when crushed. We will just have to look out for flowers in the spring. Next time I go to a garden centre I'll look out for Iberis sempervirens to compare!

 

Iberis foliage has no discernible smell @Millie16 , and that's what you have in those pix

Just be aware that it's a different plant from the annual one, as @JennyJB has said. Both are commonly called candytuft, but they're not the same plants. If you look just now, you wouldn't find the annual one anyway, but it could be trickier in spring!