fix all leaks and incorrect parameter counts in amd64.e

this required adding a new magic-comment command, drop-subitem, because there's a couple cases, in indexed addressing mode helpers, where a hardcoded register value is used as part of preparing an sib word, and that value shouldn't become a subitem for the assembly word that calls the helper.

notably, a lot of the disp8 and indexed assembly words had incorrect parameter counts that needed adjusting

parameter ORDERS still need a close read to make sure they're correct.  also, as future work, substring entries should be renamed to subitem entries.

Force-Push: yes
Change-Id: I419243855751416377d0ea0c5062fa1ba9e62a8d

0 files changed, 0 insertions, 0 deletions