This ensures that each intrinsic ends up in a separate module, which in
turn (because rustc treats compiler_builtins specially) will result in
each intrinsic ending up in its own object file. This allows the linker
to only pick up object files for intrinsics that are missing and avoids
duplicate symbol definition errors.
* Use a no-asm feature instead of an asm feature
This works better as core/alloc/std have trouble supporting default
featues in this crate.
Signed-off-by: Joe Richey <joerichey@google.com>
* Have no-asm disable arm assembly intrinsics
Signed-off-by: Joe Richey <joerichey@google.com>
Use the "volatile" option and the "memory" clobber on inline asm that does
things like return directly, to reduce the chances of compilers rearranging
the code.
