- // MIR for `main` before ConstProp + // MIR for `main` after ConstProp fn main() -> () { let mut _0: (); // return place in scope 0 at $DIR/mutable_variable_no_prop.rs:+0:11: +0:11 let mut _1: u32; // in scope 0 at $DIR/mutable_variable_no_prop.rs:+1:9: +1:14 let _2: (); // in scope 0 at $DIR/mutable_variable_no_prop.rs:+2:5: +4:6 let mut _3: u32; // in scope 0 at $DIR/mutable_variable_no_prop.rs:+3:13: +3:19 let mut _4: *mut u32; // in scope 0 at $DIR/mutable_variable_no_prop.rs:+3:13: +3:19 scope 1 { debug x => _1; // in scope 1 at $DIR/mutable_variable_no_prop.rs:+1:9: +1:14 let _5: u32; // in scope 1 at $DIR/mutable_variable_no_prop.rs:+5:9: +5:10 scope 2 { } scope 3 { debug y => _5; // in scope 3 at $DIR/mutable_variable_no_prop.rs:+5:9: +5:10 } } bb0: { StorageLive(_1); // scope 0 at $DIR/mutable_variable_no_prop.rs:+1:9: +1:14 _1 = const 42_u32; // scope 0 at $DIR/mutable_variable_no_prop.rs:+1:17: +1:19 StorageLive(_2); // scope 1 at $DIR/mutable_variable_no_prop.rs:+2:5: +4:6 StorageLive(_3); // scope 2 at $DIR/mutable_variable_no_prop.rs:+3:13: +3:19 StorageLive(_4); // scope 2 at $DIR/mutable_variable_no_prop.rs:+3:13: +3:19 _4 = const {alloc1: *mut u32}; // scope 2 at $DIR/mutable_variable_no_prop.rs:+3:13: +3:19 // mir::Constant // + span: $DIR/mutable_variable_no_prop.rs:9:13: 9:19 // + literal: Const { ty: *mut u32, val: Value(Scalar(alloc1)) } _3 = (*_4); // scope 2 at $DIR/mutable_variable_no_prop.rs:+3:13: +3:19 _1 = move _3; // scope 2 at $DIR/mutable_variable_no_prop.rs:+3:9: +3:19 StorageDead(_3); // scope 2 at $DIR/mutable_variable_no_prop.rs:+3:18: +3:19 StorageDead(_4); // scope 2 at $DIR/mutable_variable_no_prop.rs:+3:19: +3:20 _2 = const (); // scope 2 at $DIR/mutable_variable_no_prop.rs:+2:5: +4:6 StorageDead(_2); // scope 1 at $DIR/mutable_variable_no_prop.rs:+4:5: +4:6 StorageLive(_5); // scope 1 at $DIR/mutable_variable_no_prop.rs:+5:9: +5:10 _5 = _1; // scope 1 at $DIR/mutable_variable_no_prop.rs:+5:13: +5:14 _0 = const (); // scope 0 at $DIR/mutable_variable_no_prop.rs:+0:11: +6:2 StorageDead(_5); // scope 1 at $DIR/mutable_variable_no_prop.rs:+6:1: +6:2 StorageDead(_1); // scope 0 at $DIR/mutable_variable_no_prop.rs:+6:1: +6:2 return; // scope 0 at $DIR/mutable_variable_no_prop.rs:+6:2: +6:2 } } alloc1 (static: STATIC, size: 4, align: 4) { 42 42 42 42 │ BBBB }