src/test/mir-opt/const_prop/cast/rustc.main.ConstProp.diff

   1 - // MIR for `main` before ConstProp
   2 + // MIR for `main` after ConstProp
   3
   4   fn main() -> () {
   5       let mut _0: ();                      // return place in scope 0 at $DIR/cast.rs:3:11: 3:11
   6       let _1: u32;                         // in scope 0 at $DIR/cast.rs:4:9: 4:10
   7       scope 1 {
   8           debug x => _1;                   // in scope 1 at $DIR/cast.rs:4:9: 4:10
   9           let _2: u8;                      // in scope 1 at $DIR/cast.rs:6:9: 6:10
  10           scope 2 {
  11               debug y => _2;               // in scope 2 at $DIR/cast.rs:6:9: 6:10
  12           }
  13       }
  14
  15       bb0: {
  16           StorageLive(_1);                 // bb0[0]: scope 0 at $DIR/cast.rs:4:9: 4:10
  17 -         _1 = const 42u8 as u32 (Misc);   // bb0[1]: scope 0 at $DIR/cast.rs:4:13: 4:24
  18 +         _1 = const 42u32;                // bb0[1]: scope 0 at $DIR/cast.rs:4:13: 4:24
  19                                            // ty::Const
  20 -                                          // + ty: u8
  21 -                                          // + val: Value(Scalar(0x2a))
  22 -                                          // mir::Constant
  23 -                                          // + span: $DIR/cast.rs:4:13: 4:17
  24 -                                          // + literal: Const { ty: u8, val: Value(Scalar(0x2a)) }
  25 -         StorageLive(_2);                 // bb0[2]: scope 1 at $DIR/cast.rs:6:9: 6:10
  26 -         _2 = const 42u32 as u8 (Misc);   // bb0[3]: scope 1 at $DIR/cast.rs:6:13: 6:24
  27 -                                          // ty::Const
  28                                            // + ty: u32
  29                                            // + val: Value(Scalar(0x0000002a))
  30                                            // mir::Constant
  31 -                                          // + span: $DIR/cast.rs:6:13: 6:18
  32 +                                          // + span: $DIR/cast.rs:4:13: 4:24
  33                                            // + literal: Const { ty: u32, val: Value(Scalar(0x0000002a)) }
  34 +         StorageLive(_2);                 // bb0[2]: scope 1 at $DIR/cast.rs:6:9: 6:10
  35 +         _2 = const 42u8;                 // bb0[3]: scope 1 at $DIR/cast.rs:6:13: 6:24
  36 +                                          // ty::Const
  37 +                                          // + ty: u8
  38 +                                          // + val: Value(Scalar(0x2a))
  39 +                                          // mir::Constant
  40 +                                          // + span: $DIR/cast.rs:6:13: 6:24
  41 +                                          // + literal: Const { ty: u8, val: Value(Scalar(0x2a)) }
  42           _0 = const ();                   // bb0[4]: scope 0 at $DIR/cast.rs:3:11: 7:2
  43                                            // ty::Const
  44                                            // + ty: ()
  45                                            // + val: Value(Scalar(<ZST>))
  46                                            // mir::Constant
  47                                            // + span: $DIR/cast.rs:3:11: 7:2
  48                                            // + literal: Const { ty: (), val: Value(Scalar(<ZST>)) }
  49           StorageDead(_2);                 // bb0[5]: scope 1 at $DIR/cast.rs:7:1: 7:2
  50           StorageDead(_1);                 // bb0[6]: scope 0 at $DIR/cast.rs:7:1: 7:2
  51           return;                          // bb0[7]: scope 0 at $DIR/cast.rs:7:2: 7:2
  52       }
  53   }
  54