- // MIR for `main` before ConstProp + // MIR for `main` after ConstProp fn main() -> () { let mut _0: (); // return place in scope 0 at $DIR/mutable_variable_aggregate.rs:4:11: 4:11 let mut _1: (i32, i32); // in scope 0 at $DIR/mutable_variable_aggregate.rs:5:9: 5:14 scope 1 { debug x => _1; // in scope 1 at $DIR/mutable_variable_aggregate.rs:5:9: 5:14 let _2: (i32, i32); // in scope 1 at $DIR/mutable_variable_aggregate.rs:7:9: 7:10 scope 2 { debug y => _2; // in scope 2 at $DIR/mutable_variable_aggregate.rs:7:9: 7:10 } } bb0: { StorageLive(_1); // scope 0 at $DIR/mutable_variable_aggregate.rs:5:9: 5:14 (_1.0: i32) = const 42_i32; // scope 0 at $DIR/mutable_variable_aggregate.rs:5:17: 5:25 (_1.1: i32) = const 43_i32; // scope 0 at $DIR/mutable_variable_aggregate.rs:5:17: 5:25 (_1.1: i32) = const 99_i32; // scope 1 at $DIR/mutable_variable_aggregate.rs:6:5: 6:13 StorageLive(_2); // scope 1 at $DIR/mutable_variable_aggregate.rs:7:9: 7:10 - _2 = _1; // scope 1 at $DIR/mutable_variable_aggregate.rs:7:13: 7:14 + _2 = const (42_i32, 99_i32); // scope 1 at $DIR/mutable_variable_aggregate.rs:7:13: 7:14 + // mir::Constant + // + span: $DIR/mutable_variable_aggregate.rs:7:13: 7:14 + // + literal: Const { ty: (i32, i32), val: Value(ByRef { alloc: Allocation { bytes: [42, 0, 0, 0, 99, 0, 0, 0], relocations: Relocations(SortedMap { data: [] }), init_mask: InitMask { blocks: [255], len: Size { raw: 8 } }, size: Size { raw: 8 }, align: Align { pow2: 2 }, mutability: Not, extra: () }, offset: Size { raw: 0 } }) } nop; // scope 0 at $DIR/mutable_variable_aggregate.rs:4:11: 8:2 StorageDead(_2); // scope 1 at $DIR/mutable_variable_aggregate.rs:8:1: 8:2 StorageDead(_1); // scope 0 at $DIR/mutable_variable_aggregate.rs:8:1: 8:2 return; // scope 0 at $DIR/mutable_variable_aggregate.rs:8:2: 8:2 } }