target/sh4: Recognize common gUSA sequences

For many of the sequences produced by gcc or glibc,
we can translate these as host atomic operations.
Which saves the need to acquire the exclusive lock.

Signed-off-by: Richard Henderson <rth@twiddle.net>

Message-Id: <20170718200255.31647-8-rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
1 file changed