Altera Nios II C2H Compiler - Manual (Page 102)

4–8 9.1 Altera Corporation
Nios II C2H Compiler User Guide November 2009
Resources
or a write. However, when an Avalon-MM master port is shared among
two or more dereference statements, it might need to support both
directions.
In Example 4–1 on page 4–5 , the connection pragmas forced the C2H
Compiler to create a single, shared Avalon-MM master port called
Master Resource 0 . If the connection pragmas were omitted from the
example software, all dereference operations would have resulted in a
single Avalon-MM master port resource connecting to all Avalon-MM
memory slave ports.
f
For more information about connection pragmas, refer to “Optimizing
Memory Connections” in the
Optimizing Nios II C2H Compiler Results
chapter of the Embedded Design Handbook.
Mathematical Operator Resources
As mentioned in Chapter 3, C-to-Hardware Mapping Reference , the data
types used in the C code determine the width of the logic which the C2H
Compiler generates. The resources section of the C2H build report shows
the width of all the resources listed. The resources section also shows the
degree of pipelining on each operator resource. This information helps
you understand the accelerator scheduling information shown in the
Performance section.
Figure 4–3 illustrates the information presented in the C2H build report
for mathematical operator resources in Example 4–1 on page 4–5 .