OffsetSpan - Used internally by ObjectSizeOffsetVisitor. Represents a point in memory as a pair of allocated bytes before and after it.
Declared in <llvm/Analysis/MemoryBuiltins.h>
struct OffsetSpan;Before and After fields are signed values. It makes it possible to represent out-of-bound access, e.g. as a result of a GEP, at the expense of not being able to represent very large allocation.
| Name | Description |
|---|---|
OffsetSpan [constructor] | Constructors |
anyKnown | Return true if either Before or After is known. |
bothKnown | Return true if both Before and After are known. |
knownAfter | Return true if After is known. |
knownBefore | Return true if Before is known. |
operator== | Return true if this offset span equals RHS. |
operator!= | Return true if this offset span differs from RHS. |
| Name | Description |
|---|---|
known | Return true if V represents a known APInt value. |
| Name | Description |
|---|---|
After | Number of allocated bytes after this point. |
Before | Number of allocated bytes before this point. |