Comment 18 for bug 926855

(In reply to comment #3)
> Richard, I suppose you mean the problem is in this define_insn:
>
> (define_insn "*thumb1_ashlsi3"
> [(set (match_operand:SI 0 "register_operand" "=l,l")
> (ashift:SI (match_operand:SI 1 "register_operand" "l,0")
> (match_operand:SI 2 "nonmemory_operand" "N,l")))]
> "TARGET_THUMB1"
> "lsl\\t%0, %1, %2"
> [(set_attr "length" "2")
> (set_attr "conds" "set")])

No, that pattern is only for Thumb1, it never applies to Thumb2.

I'm currently testing a fix