Automatically assign values to the instruction flags; we ended up with
a case where pushing flags into the next dword caused comparison
failures due to other places in the code explicitly comparing
field[3].
This creates necessary defines for this not to happen; it also cleans
up a fair bit of the iflag code.
This resolves BR 3392454.
Reported-by: Thomasz Kantecki <tomasz.kantecki@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
