diff --git a/src/test/mir-opt/const_prop/checked_add.main.ConstProp.diff b/src/test/mir-opt/const_prop/checked_add.main.ConstProp.diff
index bccfa9da6153..77ff8ef4e495 100644
--- a/src/test/mir-opt/const_prop/checked_add.main.ConstProp.diff
+++ b/src/test/mir-opt/const_prop/checked_add.main.ConstProp.diff
@@ -14,9 +14,6 @@
 -         _2 = CheckedAdd(const 1_u32, const 1_u32); // scope 0 at $DIR/checked_add.rs:5:18: 5:23
 -         assert(!move (_2.1: bool), "attempt to compute `{} + {}`, which would overflow", const 1_u32, const 1_u32) -> bb1; // scope 0 at $DIR/checked_add.rs:5:18: 5:23
 +         _2 = const (2_u32, false);       // scope 0 at $DIR/checked_add.rs:5:18: 5:23
-+                                          // mir::Constant
-+                                          // + span: $DIR/checked_add.rs:5:18: 5:23
-+                                          // + literal: Const { ty: (u32, bool), val: Value(ByRef { alloc: Allocation { bytes: [2, 0, 0, 0, 0, 0, 0, 0], relocations: Relocations(SortedMap { data: [] }), init_mask: InitMask { blocks: [31], len: Size { raw: 8 } }, align: Align { pow2: 2 }, mutability: Not, extra: () }, offset: Size { raw: 0 } }) }
 +         assert(!const false, "attempt to compute `{} + {}`, which would overflow", const 1_u32, const 1_u32) -> bb1; // scope 0 at $DIR/checked_add.rs:5:18: 5:23
       }
   
diff --git a/src/test/mir-opt/const_prop/indirect.main.ConstProp.diff b/src/test/mir-opt/const_prop/indirect.main.ConstProp.diff
index 57a00ba12b0e..8dd55235ef37 100644
--- a/src/test/mir-opt/const_prop/indirect.main.ConstProp.diff
+++ b/src/test/mir-opt/const_prop/indirect.main.ConstProp.diff
@@ -18,9 +18,6 @@
 -         assert(!move (_3.1: bool), "attempt to compute `{} + {}`, which would overflow", move _2, const 1_u8) -> bb1; // scope 0 at $DIR/indirect.rs:5:13: 5:29
 +         _2 = const 2_u8;                 // scope 0 at $DIR/indirect.rs:5:13: 5:25
 +         _3 = const (3_u8, false);        // scope 0 at $DIR/indirect.rs:5:13: 5:29
-+                                          // mir::Constant
-+                                          // + span: $DIR/indirect.rs:5:13: 5:29
-+                                          // + literal: Const { ty: (u8, bool), val: Value(ByRef { alloc: Allocation { bytes: [3, 0], relocations: Relocations(SortedMap { data: [] }), init_mask: InitMask { blocks: [3], len: Size { raw: 2 } }, align: Align { pow2: 0 }, mutability: Not, extra: () }, offset: Size { raw: 0 } }) }
 +         assert(!const false, "attempt to compute `{} + {}`, which would overflow", const 2_u8, const 1_u8) -> bb1; // scope 0 at $DIR/indirect.rs:5:13: 5:29
       }
   
diff --git a/src/test/mir-opt/const_prop/issue_67019.main.ConstProp.diff b/src/test/mir-opt/const_prop/issue_67019.main.ConstProp.diff
index 518974e24b38..2d3289f7ce51 100644
--- a/src/test/mir-opt/const_prop/issue_67019.main.ConstProp.diff
+++ b/src/test/mir-opt/const_prop/issue_67019.main.ConstProp.diff
@@ -15,9 +15,6 @@
           (_3.1: u8) = const 2_u8;         // scope 0 at $DIR/issue-67019.rs:11:11: 11:17
 -         (_2.0: (u8, u8)) = move _3;      // scope 0 at $DIR/issue-67019.rs:11:10: 11:19
 +         (_2.0: (u8, u8)) = const (1_u8, 2_u8); // scope 0 at $DIR/issue-67019.rs:11:10: 11:19
-+                                          // mir::Constant
-+                                          // + span: $DIR/issue-67019.rs:11:10: 11:19
-+                                          // + literal: Const { ty: (u8, u8), val: Value(ByRef { alloc: Allocation { bytes: [1, 2], relocations: Relocations(SortedMap { data: [] }), init_mask: InitMask { blocks: [3], len: Size { raw: 2 } }, align: Align { pow2: 0 }, mutability: Not, extra: () }, offset: Size { raw: 0 } }) }
           StorageDead(_3);                 // scope 0 at $DIR/issue-67019.rs:11:18: 11:19
           _1 = test(move _2) -> bb1;       // scope 0 at $DIR/issue-67019.rs:11:5: 11:20
                                            // mir::Constant
diff --git a/src/test/mir-opt/const_prop/mutable_variable_aggregate.main.ConstProp.diff b/src/test/mir-opt/const_prop/mutable_variable_aggregate.main.ConstProp.diff
index d94c4f6fb26b..a044d1dcfe1d 100644
--- a/src/test/mir-opt/const_prop/mutable_variable_aggregate.main.ConstProp.diff
+++ b/src/test/mir-opt/const_prop/mutable_variable_aggregate.main.ConstProp.diff
@@ -20,9 +20,6 @@
           StorageLive(_2);                 // scope 1 at $DIR/mutable_variable_aggregate.rs:7:9: 7:10
 -         _2 = _1;                         // scope 1 at $DIR/mutable_variable_aggregate.rs:7:13: 7:14
 +         _2 = const (42_i32, 99_i32);     // scope 1 at $DIR/mutable_variable_aggregate.rs:7:13: 7:14
-+                                          // mir::Constant
-+                                          // + span: $DIR/mutable_variable_aggregate.rs:7:13: 7:14
-+                                          // + literal: Const { ty: (i32, i32), val: Value(ByRef { alloc: Allocation { bytes: [42, 0, 0, 0, 99, 0, 0, 0], relocations: Relocations(SortedMap { data: [] }), init_mask: InitMask { blocks: [255], len: Size { raw: 8 } }, align: Align { pow2: 2 }, mutability: Not, extra: () }, offset: Size { raw: 0 } }) }
           nop;                             // scope 0 at $DIR/mutable_variable_aggregate.rs:4:11: 8:2
           StorageDead(_2);                 // scope 1 at $DIR/mutable_variable_aggregate.rs:8:1: 8:2
           StorageDead(_1);                 // scope 0 at $DIR/mutable_variable_aggregate.rs:8:1: 8:2
diff --git a/src/test/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.32bit.diff b/src/test/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.32bit.diff
index 537f1b6253ca..4c3f66cd0907 100644
--- a/src/test/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.32bit.diff
+++ b/src/test/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.32bit.diff
@@ -27,9 +27,6 @@
 -         _2 = CheckedAdd(const 2_i32, const 2_i32); // scope 0 at $DIR/optimizes_into_variable.rs:12:13: 12:18
 -         assert(!move (_2.1: bool), "attempt to compute `{} + {}`, which would overflow", const 2_i32, const 2_i32) -> bb1; // scope 0 at $DIR/optimizes_into_variable.rs:12:13: 12:18
 +         _2 = const (4_i32, false);       // scope 0 at $DIR/optimizes_into_variable.rs:12:13: 12:18
-+                                          // mir::Constant
-+                                          // + span: $DIR/optimizes_into_variable.rs:12:13: 12:18
-+                                          // + literal: Const { ty: (i32, bool), val: Value(ByRef { alloc: Allocation { bytes: [4, 0, 0, 0, 0, 0, 0, 0], relocations: Relocations(SortedMap { data: [] }), init_mask: InitMask { blocks: [31], len: Size { raw: 8 } }, align: Align { pow2: 2 }, mutability: Not, extra: () }, offset: Size { raw: 0 } }) }
 +         assert(!const false, "attempt to compute `{} + {}`, which would overflow", const 2_i32, const 2_i32) -> bb1; // scope 0 at $DIR/optimizes_into_variable.rs:12:13: 12:18
       }
   
diff --git a/src/test/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.64bit.diff b/src/test/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.64bit.diff
index 537f1b6253ca..4c3f66cd0907 100644
--- a/src/test/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.64bit.diff
+++ b/src/test/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.64bit.diff
@@ -27,9 +27,6 @@
 -         _2 = CheckedAdd(const 2_i32, const 2_i32); // scope 0 at $DIR/optimizes_into_variable.rs:12:13: 12:18
 -         assert(!move (_2.1: bool), "attempt to compute `{} + {}`, which would overflow", const 2_i32, const 2_i32) -> bb1; // scope 0 at $DIR/optimizes_into_variable.rs:12:13: 12:18
 +         _2 = const (4_i32, false);       // scope 0 at $DIR/optimizes_into_variable.rs:12:13: 12:18
-+                                          // mir::Constant
-+                                          // + span: $DIR/optimizes_into_variable.rs:12:13: 12:18
-+                                          // + literal: Const { ty: (i32, bool), val: Value(ByRef { alloc: Allocation { bytes: [4, 0, 0, 0, 0, 0, 0, 0], relocations: Relocations(SortedMap { data: [] }), init_mask: InitMask { blocks: [31], len: Size { raw: 8 } }, align: Align { pow2: 2 }, mutability: Not, extra: () }, offset: Size { raw: 0 } }) }
 +         assert(!const false, "attempt to compute `{} + {}`, which would overflow", const 2_i32, const 2_i32) -> bb1; // scope 0 at $DIR/optimizes_into_variable.rs:12:13: 12:18
       }
   
diff --git a/src/test/mir-opt/const_prop/return_place.add.ConstProp.diff b/src/test/mir-opt/const_prop/return_place.add.ConstProp.diff
index 97808246dd4b..c6ac8d6fb139 100644
--- a/src/test/mir-opt/const_prop/return_place.add.ConstProp.diff
+++ b/src/test/mir-opt/const_prop/return_place.add.ConstProp.diff
@@ -9,9 +9,6 @@
 -         _1 = CheckedAdd(const 2_u32, const 2_u32); // scope 0 at $DIR/return_place.rs:6:5: 6:10
 -         assert(!move (_1.1: bool), "attempt to compute `{} + {}`, which would overflow", const 2_u32, const 2_u32) -> bb1; // scope 0 at $DIR/return_place.rs:6:5: 6:10
 +         _1 = const (4_u32, false);       // scope 0 at $DIR/return_place.rs:6:5: 6:10
-+                                          // mir::Constant
-+                                          // + span: $DIR/return_place.rs:6:5: 6:10
-+                                          // + literal: Const { ty: (u32, bool), val: Value(ByRef { alloc: Allocation { bytes: [4, 0, 0, 0, 0, 0, 0, 0], relocations: Relocations(SortedMap { data: [] }), init_mask: InitMask { blocks: [31], len: Size { raw: 8 } }, align: Align { pow2: 2 }, mutability: Not, extra: () }, offset: Size { raw: 0 } }) }
 +         assert(!const false, "attempt to compute `{} + {}`, which would overflow", const 2_u32, const 2_u32) -> bb1; // scope 0 at $DIR/return_place.rs:6:5: 6:10
       }
   
diff --git a/src/test/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.diff b/src/test/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.diff
index b8f9cd34c99c..15253a364e99 100644
--- a/src/test/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.diff
+++ b/src/test/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.diff
@@ -18,9 +18,6 @@
           StorageLive(_3);                 // scope 1 at $DIR/tuple_literal_propagation.rs:5:13: 5:14
 -         _3 = _1;                         // scope 1 at $DIR/tuple_literal_propagation.rs:5:13: 5:14
 +         _3 = const (1_u32, 2_u32);       // scope 1 at $DIR/tuple_literal_propagation.rs:5:13: 5:14
-+                                          // mir::Constant
-+                                          // + span: $DIR/tuple_literal_propagation.rs:5:13: 5:14
-+                                          // + literal: Const { ty: (u32, u32), val: Value(ByRef { alloc: Allocation { bytes: [1, 0, 0, 0, 2, 0, 0, 0], relocations: Relocations(SortedMap { data: [] }), init_mask: InitMask { blocks: [255], len: Size { raw: 8 } }, align: Align { pow2: 2 }, mutability: Not, extra: () }, offset: Size { raw: 0 } }) }
           _2 = consume(move _3) -> bb1;    // scope 1 at $DIR/tuple_literal_propagation.rs:5:5: 5:15
                                            // mir::Constant
                                            // + span: $DIR/tuple_literal_propagation.rs:5:5: 5:12
diff --git a/src/test/mir-opt/deaggregator_test.bar.Deaggregator.diff b/src/test/mir-opt/deaggregator_test.bar.Deaggregator.diff
index e60a1f3e75f9..d3c7136c6478 100644
--- a/src/test/mir-opt/deaggregator_test.bar.Deaggregator.diff
+++ b/src/test/mir-opt/deaggregator_test.bar.Deaggregator.diff
@@ -12,9 +12,6 @@
 -         _0 = Baz { x: move _2, y: const 0f32, z: const false }; // scope 0 at $DIR/deaggregator_test.rs:9:5: 9:35
 +         (_0.0: usize) = move _2;         // scope 0 at $DIR/deaggregator_test.rs:9:5: 9:35
 +         (_0.1: f32) = const 0f32;        // scope 0 at $DIR/deaggregator_test.rs:9:5: 9:35
-                                           // mir::Constant
-                                           // + span: $DIR/deaggregator_test.rs:9:20: 9:23
-                                           // + literal: Const { ty: f32, val: Value(Scalar(0x00000000)) }
 +         (_0.2: bool) = const false;      // scope 0 at $DIR/deaggregator_test.rs:9:5: 9:35
           StorageDead(_2);                 // scope 0 at $DIR/deaggregator_test.rs:9:34: 9:35
           return;                          // scope 0 at $DIR/deaggregator_test.rs:10:2: 10:2
diff --git a/src/test/mir-opt/if_condition_int.dont_opt_floats.SimplifyComparisonIntegral.diff b/src/test/mir-opt/if_condition_int.dont_opt_floats.SimplifyComparisonIntegral.diff
index 2c4952402a49..64a3f52f3a06 100644
--- a/src/test/mir-opt/if_condition_int.dont_opt_floats.SimplifyComparisonIntegral.diff
+++ b/src/test/mir-opt/if_condition_int.dont_opt_floats.SimplifyComparisonIntegral.diff
@@ -12,9 +12,6 @@
           StorageLive(_3);                 // scope 0 at $DIR/if-condition-int.rs:53:8: 53:9
           _3 = _1;                         // scope 0 at $DIR/if-condition-int.rs:53:8: 53:9
           _2 = Eq(move _3, const -42f32);  // scope 0 at $DIR/if-condition-int.rs:53:8: 53:18
-                                           // mir::Constant
-                                           // + span: $DIR/if-condition-int.rs:53:13: 53:18
-                                           // + literal: Const { ty: f32, val: Value(Scalar(0xc2280000)) }
           StorageDead(_3);                 // scope 0 at $DIR/if-condition-int.rs:53:17: 53:18
           switchInt(move _2) -> [false: bb2, otherwise: bb1]; // scope 0 at $DIR/if-condition-int.rs:53:5: 53:35
       }
diff --git a/src/test/mir-opt/simplify_locals_removes_unused_consts.main.SimplifyLocals.diff b/src/test/mir-opt/simplify_locals_removes_unused_consts.main.SimplifyLocals.diff
index a698d8abcdb5..598e8247efc5 100644
--- a/src/test/mir-opt/simplify_locals_removes_unused_consts.main.SimplifyLocals.diff
+++ b/src/test/mir-opt/simplify_locals_removes_unused_consts.main.SimplifyLocals.diff
@@ -38,9 +38,6 @@
                                            // mir::Constant
                                            // + span: $DIR/simplify-locals-removes-unused-consts.rs:14:5: 14:12
                                            // + literal: Const { ty: fn(((), ())) {use_zst}, val: Value(Scalar(<ZST>)) }
-                                           // mir::Constant
-                                           // + span: $DIR/simplify-locals-removes-unused-consts.rs:14:5: 14:22
-                                           // + literal: Const { ty: ((), ()), val: Value(Scalar(<ZST>)) }
       }
   
       bb1: {