Location: western Massachusetts
We cut it severely (to remove it) because it was kind of unwieldy when we first moved here, but the plant was very resilient and now it has grown back slim stems and leaves.
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Possibly Cotinus coggygria 'Royal Purple' (Smokebush) or similar purple cultivar, though some of the leaves don't look quite right - a bit too pointed, maybe? On the other hand, the stems look right. Check out the photos here. If it is a cotinus, you'll know for sure when it flowers.
I found a couple of possibilities. If you can add a close-up of the top surface of one leaf, that might be helpful in confirming or ruling these out.
Japanese andromeda (Pieris japonica) - young leaves are red in some cultivars
Both are evergreen shrubs with some red leaves and some green leaves, so if you remember what it looked like before you cut it back that might be helpful.