Embedded blocks should also have their holders set for better debugging information

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Give a little bit of information on the merge point

Signed-off-by: Stefan Marr <git@stefan-marr.de>
This loop should be unroll_safe

Signed-off-by: Stefan Marr <git@stefan-marr.de>