This intrinsic inserts a
NOP instruction or an
equivalent code sequence into the instruction stream generated by
the compiler. One
NOP instruction is generated for
__nop intrinsic in the source.
The compiler does not optimize away the
except for normal unreachable code elimination. The
also acts as a barrier for instruction scheduling in the compiler. That
is, instructions are not moved from one side of the
the other as a result of optimization.
You can use the
to insert a scheduling barrier without generating a