Altera Nios II C2H Compiler - Manual (Page 39)

Altera Corporation 9.1 2–17
November 2009 Nios II C2H Compiler User Guide
Getting Started Tutorial
more iterations of optimization to produce better results. In either case,
you can continue developing your system software and hardware, and
the accelerator remains in place.
1 It is common to be able to improve first-pass performance
results significantly by optimizing the C code and system
architecture.
If you modify the accelerated C code, the Nios II IDE automatically
regenerates the accelerator hardware with the C2H Compiler the next
time you build the C/C++ application project. Alternatively, you can
disable an accelerator after it is built and relink the original software
implementation, while leaving the hardware accelerator inactive in the
hardware.
f
To get a better understanding of how the C2H Compiler translates C to
hardware, read
Chapter 3, C-to-Hardware Mapping Reference . After
that, for further information on optimizing C2H Compiler results, refer
to the
Accelerating Nios II Systems with the C2H Compiler Tutorial .