The volatile
qualifier
impacts how many reads or writes are performed in the RTL when
pointers are accessed multiple times on function interfaces.
Although the volatile
qualifier
impacts this behavior in all functions in the hierarchy, the
impact of the volatile
qualifier
is primarily discussed in the section on top-level
interfaces.
- no burst access
- no port widening
- no dead code elimination
Tip: Arbitrary precision types do not support the volatile qualifier for arithmetic operations. Any arbitrary precision data types using the volatile qualifier must be assigned to a non-volatile data type before being used in arithmetic expression.