The thumb2 instructions sxtab/sxtah/sxtab16/sxtb16 and their unsigned counterparts are only available when the DSP extension is available, currently not all of these instructions and their aliases respect this. This patch fixes this up to be consistent.
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- rL LLVM
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Looks OK, but where are the positive tests? Assuming LLVM already has those somewhere?
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The positive tests already exist in test/MC/ARM/basic-{arm,thumb2}-instructions.s.
Committed as r226468.