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#### 10.2.4 Statements

Most statements will be assignment statements, represented by `MODIFY_EXPR`. A `CALL_EXPR` whose value is ignored can also be a statement. No other C expressions can appear at statement level; a reference to a volatile object is converted into a `MODIFY_EXPR`. In GIMPLE form, type of `MODIFY_EXPR` is not meaningful. Instead, use type of LHS or RHS.

There are also several varieties of complex statements.