Delaying the logging until after module creating ensures that the
module has been fully parsed and hence that all names are available.

Also refactors the code to bring all code logging/disassembling into
one place.

Change-Id: I8219d70876d2ccd3a5ffb8250b46fdf60a46fe6c
Reviewed-on: https://chromium-review.googlesource.com/973443Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Stephan Herhut <herhut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52146}