9.37.3 TIC6X Directives
Directives controlling the set of instructions accepted by the
assembler have effect for instructions between the directive and any
subsequent directive overriding it.
.arch
arch- This has the same effect as -march=arch.
.atomic
.noatomic
- These have the same effects as -matomic and
-mno-atomic.
.nocmp
- Disallow use of C64x+ compact instructions in the current text
section.