Two slightly different syntaxes are support for ARM and THUMB
instructions. The default,
divided, uses the old style where
ARM and THUMB instructions had their own, separate syntaxes. The new,
unified syntax, which can be selected via the
directive, and has the following main features:
IT instruction may appear, and if it does it is validated
against subsequent conditional affixes. In ARM mode it does not
generate machine code, in THUMB mode it does.
.W suffixes are recognized and honored.