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由 Bastian Koppelmann 提交于
Add instructions of RR opcode format, that have 0xf as the first opcode. Add helper functions: * clo/z/s: Counts leading ones/zeros/signs. * clo/z/s_h: Count leading ones/zeros/signs in two haflwords. * sh/_h: Shifts one/two word/hwords. * sha/_h: Shifts one/two word/hwords arithmeticly. Signed-off-by: NBastian Koppelmann <kbastian@mail.uni-paderborn.de> Reviewed-by: NRichard Henderson <rth@twiddle.net>
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