src/test/mir-opt/const-promotion-extern-static/rustc.FOO.PromoteTemps.diff

   1 - // MIR for `FOO` before PromoteTemps
   2 + // MIR for `FOO` after PromoteTemps
   3
   4   static mut FOO: *const &i32 = {
   5       let mut _0: *const &i32;             // return place in scope 0 at $DIR/const-promotion-extern-static.rs:13:17: 13:28
   6       let mut _1: &[&i32];                 // in scope 0 at $DIR/const-promotion-extern-static.rs:13:31: 13:46
   7       let mut _2: &[&i32; 1];              // in scope 0 at $DIR/const-promotion-extern-static.rs:13:31: 13:46
   8       let _3: [&i32; 1];                   // in scope 0 at $DIR/const-promotion-extern-static.rs:13:31: 13:46
   9       let mut _4: &i32;                    // in scope 0 at $DIR/const-promotion-extern-static.rs:13:32: 13:45
  10       let _5: &i32;                        // in scope 0 at $DIR/const-promotion-extern-static.rs:13:42: 13:43
  11 +     let mut _6: &[&i32; 1];              // in scope 0 at $DIR/const-promotion-extern-static.rs:13:31: 13:46
  12       scope 1 {
  13       }
  14
  15       bb0: {
  16           StorageLive(_1);                 // bb0[0]: scope 0 at $DIR/const-promotion-extern-static.rs:13:31: 13:46
  17           StorageLive(_2);                 // bb0[1]: scope 0 at $DIR/const-promotion-extern-static.rs:13:31: 13:46
  18 -         StorageLive(_3);                 // bb0[2]: scope 0 at $DIR/const-promotion-extern-static.rs:13:31: 13:46
  19 -         StorageLive(_4);                 // bb0[3]: scope 0 at $DIR/const-promotion-extern-static.rs:13:32: 13:45
  20 -         StorageLive(_5);                 // bb0[4]: scope 1 at $DIR/const-promotion-extern-static.rs:13:42: 13:43
  21 -         _5 = const {alloc2+0: &i32};     // bb0[5]: scope 1 at $DIR/const-promotion-extern-static.rs:13:42: 13:43
  22 +         _6 = const FOO::promoted[0];     // bb0[2]: scope 0 at $DIR/const-promotion-extern-static.rs:13:31: 13:46
  23                                            // ty::Const
  24 -                                          // + ty: &i32
  25 -                                          // + val: Value(Scalar(alloc2+0))
  26 +                                          // + ty: &[&i32; 1]
  27 +                                          // + val: Unevaluated(DefId(0:7 ~ const_promotion_extern_static[317d]::FOO[0]), [], Some(promoted[0]))
  28                                            // mir::Constant
  29 -                                          // + span: $DIR/const-promotion-extern-static.rs:13:42: 13:43
  30 -                                          // + literal: Const { ty: &i32, val: Value(Scalar(alloc2+0)) }
  31 -         _4 = &(*_5);                     // bb0[6]: scope 1 at $DIR/const-promotion-extern-static.rs:13:41: 13:43
  32 -         _3 = [move _4];                  // bb0[7]: scope 0 at $DIR/const-promotion-extern-static.rs:13:31: 13:46
  33 -         _2 = &_3;                        // bb0[8]: scope 0 at $DIR/const-promotion-extern-static.rs:13:31: 13:46
  34 -         _1 = move _2 as &[&i32] (Pointer(Unsize)); // bb0[9]: scope 0 at $DIR/const-promotion-extern-static.rs:13:31: 13:46
  35 -         _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:13:31: 13:55
  36 +                                          // + span: $DIR/const-promotion-extern-static.rs:13:31: 13:46
  37 +                                          // + literal: Const { ty: &[&i32; 1], val: Unevaluated(DefId(0:7 ~ const_promotion_extern_static[317d]::FOO[0]), [], Some(promoted[0])) }
  38 +         _2 = &(*_6);                     // bb0[3]: scope 0 at $DIR/const-promotion-extern-static.rs:13:31: 13:46
  39 +         _1 = move _2 as &[&i32] (Pointer(Unsize)); // bb0[4]: scope 0 at $DIR/const-promotion-extern-static.rs:13:31: 13:46
  40 +         _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:13:31: 13:55
  41                                            // ty::Const
  42                                            // + ty: for<'r> fn(&'r [&i32]) -> *const &i32 {core::slice::<impl [&i32]>::as_ptr}
  43                                            // + val: Value(Scalar(<ZST>))
  44                                            // mir::Constant
  45                                            // + span: $DIR/const-promotion-extern-static.rs:13:47: 13:53
  46                                            // + literal: Const { ty: for<'r> fn(&'r [&i32]) -> *const &i32 {core::slice::<impl [&i32]>::as_ptr}, val: Value(Scalar(<ZST>)) }
  47       }
  48
  49       bb1 (cleanup): {
  50           resume;                          // bb1[0]: scope 0 at $DIR/const-promotion-extern-static.rs:13:1: 13:56
  51       }
  52
  53       bb2: {
  54 -         StorageDead(_5);                 // bb2[0]: scope 0 at $DIR/const-promotion-extern-static.rs:13:54: 13:55
  55 -         StorageDead(_3);                 // bb2[1]: scope 0 at $DIR/const-promotion-extern-static.rs:13:54: 13:55
  56 -         return;                          // bb2[2]: scope 0 at $DIR/const-promotion-extern-static.rs:13:1: 13:56
  57 +         return;                          // bb2[0]: scope 0 at $DIR/const-promotion-extern-static.rs:13:1: 13:56
  58       }
  59   }
  60 -
  61 - alloc2 (extern static: X)
  62