src/test/mir-opt/const-promotion-extern-static/rustc.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: 9:35
   7       let mut _2: &[&i32; 1];              // in scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:35
   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: 9:35
  12
  13       bb0: {
  14           StorageLive(_1);                 // bb0[0]: scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:35
  15           StorageLive(_2);                 // bb0[1]: scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:35
  16 -         StorageLive(_3);                 // bb0[2]: scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:35
  17 -         StorageLive(_4);                 // bb0[3]: scope 0 at $DIR/const-promotion-extern-static.rs:9:32: 9:34
  18 -         StorageLive(_5);                 // bb0[4]: scope 0 at $DIR/const-promotion-extern-static.rs:9:33: 9:34
  19 -         _5 = const {alloc0+0: &i32};     // bb0[5]: scope 0 at $DIR/const-promotion-extern-static.rs:9:33: 9:34
  20 +         _6 = const BAR::promoted[0];     // bb0[2]: scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:35
  21                                            // ty::Const
  22 -                                          // + ty: &i32
  23 -                                          // + val: Value(Scalar(alloc0+0))
  24 +                                          // + ty: &[&i32; 1]
  25 +                                          // + val: Unevaluated(DefId(0:6 ~ const_promotion_extern_static[317d]::BAR[0]), [], 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(alloc0+0)) }
  29 -         _4 = &(*_5);                     // bb0[6]: scope 0 at $DIR/const-promotion-extern-static.rs:9:32: 9:34
  30 -         _3 = [move _4];                  // bb0[7]: scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:35
  31 -         _2 = &_3;                        // bb0[8]: scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:35
  32 -         _1 = move _2 as &[&i32] (Pointer(Unsize)); // bb0[9]: scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:35
  33 -         _0 = const core::slice::<impl [&i32]>::as_ptr(move _1) -> [return: bb2, unwind: bb1]; // bb0[10]: scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:44
  34 +                                          // + span: $DIR/const-promotion-extern-static.rs:9:31: 9:35
  35 +                                          // + literal: Const { ty: &[&i32; 1], val: Unevaluated(DefId(0:6 ~ const_promotion_extern_static[317d]::BAR[0]), [], Some(promoted[0])) }
  36 +         _2 = &(*_6);                     // bb0[3]: scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:35
  37 +         _1 = move _2 as &[&i32] (Pointer(Unsize)); // bb0[4]: scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:35
  38 +         _0 = const core::slice::<impl [&i32]>::as_ptr(move _1) -> [return: bb2, unwind: bb1]; // bb0[5]: scope 0 at $DIR/const-promotion-extern-static.rs:9:31: 9:44
  39                                            // ty::Const
  40                                            // + ty: for<'r> fn(&'r [&i32]) -> *const &i32 {core::slice::<impl [&i32]>::as_ptr}
  41                                            // + val: Value(Scalar(<ZST>))
  42                                            // mir::Constant
  43                                            // + span: $DIR/const-promotion-extern-static.rs:9:36: 9:42
  44                                            // + literal: Const { ty: for<'r> fn(&'r [&i32]) -> *const &i32 {core::slice::<impl [&i32]>::as_ptr}, val: Value(Scalar(<ZST>)) }
  45       }
  46
  47       bb1 (cleanup): {
  48           resume;                          // bb1[0]: scope 0 at $DIR/const-promotion-extern-static.rs:9:1: 9:45
  49       }
  50
  51       bb2: {
  52 -         StorageDead(_5);                 // bb2[0]: scope 0 at $DIR/const-promotion-extern-static.rs:9:43: 9:44
  53 -         StorageDead(_3);                 // bb2[1]: scope 0 at $DIR/const-promotion-extern-static.rs:9:43: 9:44
  54 -         return;                          // bb2[2]: scope 0 at $DIR/const-promotion-extern-static.rs:9:1: 9:45
  55 +         return;                          // bb2[0]: scope 0 at $DIR/const-promotion-extern-static.rs:9:1: 9:45
  56       }
  57 - }
  58 -
  59 - alloc0 (static: Y, size: 4, align: 4) {
  60 -     2a 00 00 00                                     │ *...
  61   }
  62