Return the constant for the specified aggregate element, or null.
For aggregates (struct/array/vector) return the constant that corresponds to the specified element if possible, or null if not. This can return null if the element index is a ConstantExpr, if 'this' is a constant expr or if the constant does not fit into an uint64_t.
The constant for the element, or null if unavailable.
| Name | Description |
|---|---|
| Elt | Zero-based element index. |