src/test/mir-opt/const_promotion_extern_static.BAR.PromoteTemps.diff

   1 - // MIR for `BAR` before PromoteTemps
   2 + // MIR for `BAR` after PromoteTemps
   3
   4   static mut BAR: *const &i32 = {
   5       let mut _0: *const &i32;             // return place in scope 0 at $DIR/const-promotion-extern-static.rs:9:17: 9:28
   6       let mut _1: &[&i32];                 // in scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:44
   7       let mut _2: &[&i32; 1];              // in scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:44
   8       let _3: [&i32; 1];                   // in scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:35
   9       let mut _4: &i32;                    // in scope 0 at $DIR/const-promotion-extern-static.rs:9:32: 9:34
  10       let _5: &i32;                        // in scope 0 at $DIR/const-promotion-extern-static.rs:9:33: 9:34
  11 +     let mut _6: &[&i32; 1];              // in scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:44
  12
  13       bb0: {
  14           StorageLive(_1);                 // scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:44
  15           StorageLive(_2);                 // scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:44
  16 -         StorageLive(_3);                 // scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:35
  17 -         StorageLive(_4);                 // scope 0 at $DIR/const-promotion-extern-static.rs:9:32: 9:34
  18 -         StorageLive(_5);                 // scope 0 at $DIR/const-promotion-extern-static.rs:9:33: 9:34
  19 -         _5 = const {alloc1: &i32};       // scope 0 at $DIR/const-promotion-extern-static.rs:9:33: 9:34
  20 +         _6 = const BAR::promoted[0];     // scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:44
  21                                            // ty::Const
  22 -                                          // + ty: &i32
  23 -                                          // + val: Value(Scalar(alloc1))
  24 +                                          // + ty: &[&i32; 1]
  25 +                                          // + val: Unevaluated(BAR, [], Some(promoted[0]))
  26                                            // mir::Constant
  27 -                                          // + span: $DIR/const-promotion-extern-static.rs:9:33: 9:34
  28 -                                          // + literal: Const { ty: &i32, val: Value(Scalar(alloc1)) }
  29 -         _4 = &(*_5);                     // scope 0 at $DIR/const-promotion-extern-static.rs:9:32: 9:34
  30 -         _3 = [move _4];                  // scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:35
  31 -         _2 = &_3;                        // scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:44
  32 +                                          // + span: $DIR/const-promotion-extern-static.rs:9:31: 9:44
  33 +                                          // + literal: Const { ty: &[&i32; 1], val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:6 ~ const_promotion_extern_static[HASH]::BAR), const_param_did: None }, substs: [], promoted: Some(promoted[0]) }) }
  34 +         _2 = &(*_6);                     // scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:44
  35           _1 = move _2 as &[&i32] (Pointer(Unsize)); // scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:44
  36 -         StorageDead(_4);                 // scope 0 at $DIR/const-promotion-extern-static.rs:9:34: 9:35
  37           StorageDead(_2);                 // scope 0 at $DIR/const-promotion-extern-static.rs:9:34: 9:35
  38           _0 = core::slice::<impl [&i32]>::as_ptr(move _1) -> [return: bb1, unwind: bb2]; // scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:44
  39                                            // mir::Constant
  40                                            // + span: $DIR/const-promotion-extern-static.rs:9:36: 9:42
  41                                            // + literal: Const { ty: for<'r> fn(&'r [&i32]) -> *const &i32 {core::slice::<impl [&i32]>::as_ptr}, val: Value(Scalar(<ZST>)) }
  42       }
  43
  44       bb1: {
  45 -         StorageDead(_5);                 // scope 0 at $DIR/const-promotion-extern-static.rs:9:43: 9:44
  46 -         StorageDead(_3);                 // scope 0 at $DIR/const-promotion-extern-static.rs:9:43: 9:44
  47           StorageDead(_1);                 // scope 0 at $DIR/const-promotion-extern-static.rs:9:43: 9:44
  48           return;                          // scope 0 at $DIR/const-promotion-extern-static.rs:9:1: 9:45
  49       }
  50
  51       bb2 (cleanup): {
  52           resume;                          // scope 0 at $DIR/const-promotion-extern-static.rs:9:1: 9:45
  53       }
  54 - }
  55 -
  56 - alloc1 (static: Y, size: 4, align: 4) {
  57 -     2a 00 00 00                                     │ *...
  58   }
  59