3.8 Compiler intrinsics for Digital Signal Processing (DSP)
The compiler provides intrinsics that assist in the implementation of DSP algorithms.
These intrinsics introduce the appropriate target
ARM, on architectures
from ARMv5TE onwards.
Thumb, on architectures with Thumb-2 technology.
Not every instruction has its own intrinsic. The compiler
can combine several intrinsics, or combinations of intrinsics and
C operators to generate more powerful instructions. For example, the
QDADD instruction is generated
by a combination of