src/test/mir-opt/const_prop/read_immutable_static.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/read_immutable_static.rs:6:11: 6:11
   6       let _1: u8;                          // in scope 0 at $DIR/read_immutable_static.rs:7:9: 7:10
   7       let mut _2: u8;                      // in scope 0 at $DIR/read_immutable_static.rs:7:13: 7:16
   8       let mut _3: &u8;                     // in scope 0 at $DIR/read_immutable_static.rs:7:13: 7:16
   9       let mut _4: u8;                      // in scope 0 at $DIR/read_immutable_static.rs:7:19: 7:22
  10       let mut _5: &u8;                     // in scope 0 at $DIR/read_immutable_static.rs:7:19: 7:22
  11       scope 1 {
  12           debug x => _1;                   // in scope 1 at $DIR/read_immutable_static.rs:7:9: 7:10
  13       }
  14
  15       bb0: {
  16           StorageLive(_1);                 // scope 0 at $DIR/read_immutable_static.rs:7:9: 7:10
  17           StorageLive(_2);                 // scope 0 at $DIR/read_immutable_static.rs:7:13: 7:16
  18           StorageLive(_3);                 // scope 0 at $DIR/read_immutable_static.rs:7:13: 7:16
  19           _3 = const {alloc1: &u8};        // scope 0 at $DIR/read_immutable_static.rs:7:13: 7:16
  20                                            // mir::Constant
  21                                            // + span: $DIR/read_immutable_static.rs:7:13: 7:16
  22                                            // + literal: Const { ty: &u8, val: Value(Scalar(alloc1)) }
  23 -         _2 = (*_3);                      // scope 0 at $DIR/read_immutable_static.rs:7:13: 7:16
  24 +         _2 = const 2_u8;                 // scope 0 at $DIR/read_immutable_static.rs:7:13: 7:16
  25           StorageLive(_4);                 // scope 0 at $DIR/read_immutable_static.rs:7:19: 7:22
  26           StorageLive(_5);                 // scope 0 at $DIR/read_immutable_static.rs:7:19: 7:22
  27           _5 = const {alloc1: &u8};        // scope 0 at $DIR/read_immutable_static.rs:7:19: 7:22
  28                                            // mir::Constant
  29                                            // + span: $DIR/read_immutable_static.rs:7:19: 7:22
  30                                            // + literal: Const { ty: &u8, val: Value(Scalar(alloc1)) }
  31 -         _4 = (*_5);                      // scope 0 at $DIR/read_immutable_static.rs:7:19: 7:22
  32 -         _1 = Add(move _2, move _4);      // scope 0 at $DIR/read_immutable_static.rs:7:13: 7:22
  33 +         _4 = const 2_u8;                 // scope 0 at $DIR/read_immutable_static.rs:7:19: 7:22
  34 +         _1 = const 4_u8;                 // scope 0 at $DIR/read_immutable_static.rs:7:13: 7:22
  35           StorageDead(_4);                 // scope 0 at $DIR/read_immutable_static.rs:7:21: 7:22
  36           StorageDead(_2);                 // scope 0 at $DIR/read_immutable_static.rs:7:21: 7:22
  37           StorageDead(_5);                 // scope 0 at $DIR/read_immutable_static.rs:7:22: 7:23
  38           StorageDead(_3);                 // scope 0 at $DIR/read_immutable_static.rs:7:22: 7:23
  39           nop;                             // scope 0 at $DIR/read_immutable_static.rs:6:11: 8:2
  40           StorageDead(_1);                 // scope 0 at $DIR/read_immutable_static.rs:8:1: 8:2
  41           return;                          // scope 0 at $DIR/read_immutable_static.rs:8:2: 8:2
  42       }
  43   }
  44
  45   alloc1 (static: FOO, size: 1, align: 1) {
  46       02                                              │ .
  47   }
  48