Coverity reports a BAD_SHIFT with ctz32(imm5), with imm5 == 0.
This is an invalid encoding, but we diagnose that just below
by rejecting size > 3. Avoid the warning by sinking the
computation of index below the check.
Reported-by: Coverity (CID 1421965)
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200320160622.8040-4-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
550a04893c