[PATCH 0/3] x86: drop VexSources attribute

[Jan Beulich]

This attribute's existence has been bothering me for years; I merely never
dared to touch it because the hackery looked pretty fragile. In the course
of trying to get .insn to work sensibly (and without overly intrusive
changes to the assembler), I finally had to properly understand what the
special case code does. And voila - XOP2SOURCES is fully redundant with
other (in part special case) handling we have, while VEX3SOURCES uses can
easily be expressed differently.

1: limit use of XOP2SOURCES
2: drop use of XOP2SOURCES
3: drop use of VEX3SOURCES

While I don't think there are any conflicts (except in generated files),
if in doubt this is assumed to go on top of "x86: assorted opcode
processing adjustments".

Jan