src/test/mir-opt/no_spurious_drop_after_call.main.ElaborateDrops.before.mir

   1 // MIR for `main` before ElaborateDrops
   2
   3 fn main() -> () {
   4     let mut _0: ();                      // return place in scope 0 at $DIR/no-spurious-drop-after-call.rs:8:11: 8:11
   5     let _1: ();                          // in scope 0 at $DIR/no-spurious-drop-after-call.rs:9:5: 9:35
   6     let mut _2: std::string::String;     // in scope 0 at $DIR/no-spurious-drop-after-call.rs:9:20: 9:34
   7     let mut _3: &str;                    // in scope 0 at $DIR/no-spurious-drop-after-call.rs:9:20: 9:22
   8     let _4: &str;                        // in scope 0 at $DIR/no-spurious-drop-after-call.rs:9:20: 9:22
   9
  10     bb0: {
  11         StorageLive(_1);                 // scope 0 at $DIR/no-spurious-drop-after-call.rs:9:5: 9:35
  12         StorageLive(_2);                 // scope 0 at $DIR/no-spurious-drop-after-call.rs:9:20: 9:34
  13         StorageLive(_3);                 // scope 0 at $DIR/no-spurious-drop-after-call.rs:9:20: 9:22
  14         StorageLive(_4);                 // scope 0 at $DIR/no-spurious-drop-after-call.rs:9:20: 9:22
  15         _4 = const "";                   // scope 0 at $DIR/no-spurious-drop-after-call.rs:9:20: 9:22
  16                                          // ty::Const
  17                                          // + ty: &str
  18                                          // + val: Value(Slice { data: Allocation { bytes: [], relocations: Relocations(SortedMap { data: [] }), init_mask: InitMask { blocks: [], len: Size { raw: 0 } }, size: Size { raw: 0 }, align: Align { pow2: 0 }, mutability: Not, extra: () }, start: 0, end: 0 })
  19                                          // mir::Constant
  20                                          // + span: $DIR/no-spurious-drop-after-call.rs:9:20: 9:22
  21                                          // + literal: Const { ty: &str, val: Value(Slice { data: Allocation { bytes: [], relocations: Relocations(SortedMap { data: [] }), init_mask: InitMask { blocks: [], len: Size { raw: 0 } }, size: Size { raw: 0 }, align: Align { pow2: 0 }, mutability: Not, extra: () }, start: 0, end: 0 }) }
  22         _3 = &(*_4);                     // scope 0 at $DIR/no-spurious-drop-after-call.rs:9:20: 9:22
  23         _2 = const <str as std::string::ToString>::to_string(move _3) -> bb2; // scope 0 at $DIR/no-spurious-drop-after-call.rs:9:20: 9:34
  24                                          // ty::Const
  25                                          // + ty: for<'r> fn(&'r str) -> std::string::String {<str as std::string::ToString>::to_string}
  26                                          // + val: Value(Scalar(<ZST>))
  27                                          // mir::Constant
  28                                          // + span: $DIR/no-spurious-drop-after-call.rs:9:23: 9:32
  29                                          // + literal: Const { ty: for<'r> fn(&'r str) -> std::string::String {<str as std::string::ToString>::to_string}, val: Value(Scalar(<ZST>)) }
  30     }
  31
  32     bb1 (cleanup): {
  33         resume;                          // scope 0 at $DIR/no-spurious-drop-after-call.rs:8:1: 10:2
  34     }
  35
  36     bb2: {
  37         StorageDead(_3);                 // scope 0 at $DIR/no-spurious-drop-after-call.rs:9:33: 9:34
  38         _1 = const std::mem::drop::<std::string::String>(move _2) -> [return: bb3, unwind: bb4]; // scope 0 at $DIR/no-spurious-drop-after-call.rs:9:5: 9:35
  39                                          // ty::Const
  40                                          // + ty: fn(std::string::String) {std::mem::drop::<std::string::String>}
  41                                          // + val: Value(Scalar(<ZST>))
  42                                          // mir::Constant
  43                                          // + span: $DIR/no-spurious-drop-after-call.rs:9:5: 9:19
  44                                          // + literal: Const { ty: fn(std::string::String) {std::mem::drop::<std::string::String>}, val: Value(Scalar(<ZST>)) }
  45     }
  46
  47     bb3: {
  48         StorageDead(_2);                 // scope 0 at $DIR/no-spurious-drop-after-call.rs:9:34: 9:35
  49         StorageDead(_4);                 // scope 0 at $DIR/no-spurious-drop-after-call.rs:9:35: 9:36
  50         StorageDead(_1);                 // scope 0 at $DIR/no-spurious-drop-after-call.rs:9:35: 9:36
  51         _0 = const ();                   // scope 0 at $DIR/no-spurious-drop-after-call.rs:8:11: 10:2
  52                                          // ty::Const
  53                                          // + ty: ()
  54                                          // + val: Value(Scalar(<ZST>))
  55                                          // mir::Constant
  56                                          // + span: $DIR/no-spurious-drop-after-call.rs:8:11: 10:2
  57                                          // + literal: Const { ty: (), val: Value(Scalar(<ZST>)) }
  58         return;                          // scope 0 at $DIR/no-spurious-drop-after-call.rs:10:2: 10:2
  59     }
  60
  61     bb4 (cleanup): {
  62         drop(_2) -> bb1;                 // scope 0 at $DIR/no-spurious-drop-after-call.rs:9:34: 9:35
  63     }
  64 }