Make unevaluated DefId rendering deterministic

compiler/rustc_mir/src/util/pretty.rs

@@ -465,7 +465,21 @@ impl Visitor<'tcx> for ExtraComments<'tcx> {
         if use_verbose(ty) {
             self.push("ty::Const");
             self.push(&format!("+ ty: {:?}", ty));
-            self.push(&format!("+ val: {:?}", val));
+            let val = match val {
+                ty::ConstKind::Param(p) => format!("Param({})", p),
+                ty::ConstKind::Infer(infer) => format!("Infer({:?})", infer),
+                ty::ConstKind::Bound(idx, var) => format!("Bound({:?}, {:?})", idx, var),
+                ty::ConstKind::Placeholder(ph) => format!("PlaceHolder({:?})", ph),
+                ty::ConstKind::Unevaluated(uv) => format!(
+                    "Unevaluated({}, {:?}, {:?})",
+                    self.tcx.def_path_str(uv.def.did),
+                    uv.substs,
+                    uv.promoted
+                ),
+                ty::ConstKind::Value(val) => format!("Value({:?})", val),
+                ty::ConstKind::Error(_) => format!("Error"),
+            };
+            self.push(&format!("+ val: {}", val));
         }
     }
 

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

@@ -22,7 +22,7 @@
 -                                          // + ty: &i32
 -                                          // + val: Value(Scalar(alloc0))
 +                                          // + ty: &[&i32; 1]
-+                                          // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:6 ~ const_promotion_extern_static[317d]::BAR), const_param_did: None }, substs: [], promoted: Some(promoted[0]) })
++                                          // + val: Unevaluated(BAR, [], Some(promoted[0]))
                                            // mir::Constant
 -                                          // + span: $DIR/const-promotion-extern-static.rs:9:33: 9:34
 -                                          // + literal: Const { ty: &i32, val: Value(Scalar(alloc0)) }

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

@@ -24,7 +24,7 @@
 -                                          // + ty: *const i32
 -                                          // + val: Value(Scalar(alloc2))
 +                                          // + ty: &[&i32; 1]
-+                                          // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:7 ~ const_promotion_extern_static[317d]::FOO), const_param_did: None }, substs: [], promoted: Some(promoted[0]) })
++                                          // + val: Unevaluated(FOO, [], Some(promoted[0]))
                                            // mir::Constant
 -                                          // + span: $DIR/const-promotion-extern-static.rs:13:42: 13:43
 -                                          // + literal: Const { ty: *const i32, val: Value(Scalar(alloc2)) }

src/test/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.32bit.diff

@@ -28,7 +28,7 @@
           _9 = const main::promoted[0];    // scope 0 at $DIR/bad_op_unsafe_oob_for_slices.rs:5:25: 5:35
                                            // ty::Const
                                            // + ty: &[i32; 3]
-                                           // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ bad_op_unsafe_oob_for_slices[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) })
+                                           // + val: Unevaluated(main, [], Some(promoted[0]))
                                            // mir::Constant
                                            // + span: $DIR/bad_op_unsafe_oob_for_slices.rs:5:25: 5:35
                                            // + literal: Const { ty: &[i32; 3], val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ bad_op_unsafe_oob_for_slices[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) }) }

src/test/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.64bit.diff

@@ -28,7 +28,7 @@
           _9 = const main::promoted[0];    // scope 0 at $DIR/bad_op_unsafe_oob_for_slices.rs:5:25: 5:35
                                            // ty::Const
                                            // + ty: &[i32; 3]
-                                           // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ bad_op_unsafe_oob_for_slices[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) })
+                                           // + val: Unevaluated(main, [], Some(promoted[0]))
                                            // mir::Constant
                                            // + span: $DIR/bad_op_unsafe_oob_for_slices.rs:5:25: 5:35
                                            // + literal: Const { ty: &[i32; 3], val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ bad_op_unsafe_oob_for_slices[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) }) }

src/test/mir-opt/const_prop/const_prop_fails_gracefully.main.ConstProp.diff

@@ -19,7 +19,7 @@
           _3 = const FOO;                  // scope 0 at $DIR/const_prop_fails_gracefully.rs:7:13: 7:16
                                            // ty::Const
                                            // + ty: &i32
-                                           // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:5 ~ const_prop_fails_gracefully[317d]::main::FOO), const_param_did: None }, substs: [], promoted: None })
+                                           // + val: Unevaluated(FOO, [], None)
                                            // mir::Constant
                                            // + span: $DIR/const_prop_fails_gracefully.rs:7:13: 7:16
                                            // + literal: Const { ty: &i32, val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:5 ~ const_prop_fails_gracefully[317d]::main::FOO), const_param_did: None }, substs: [], promoted: None }) }

src/test/mir-opt/const_prop/ref_deref.main.ConstProp.diff

@@ -14,7 +14,7 @@
           _4 = const main::promoted[0];    // scope 0 at $DIR/ref_deref.rs:5:6: 5:10
                                            // ty::Const
                                            // + ty: &i32
-                                           // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ ref_deref[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) })
+                                           // + val: Unevaluated(main, [], Some(promoted[0]))
                                            // mir::Constant
                                            // + span: $DIR/ref_deref.rs:5:6: 5:10
                                            // + literal: Const { ty: &i32, val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ ref_deref[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) }) }

src/test/mir-opt/const_prop/ref_deref.main.PromoteTemps.diff

@@ -17,7 +17,7 @@
 +         _4 = const main::promoted[0];    // scope 0 at $DIR/ref_deref.rs:5:6: 5:10
 +                                          // ty::Const
 +                                          // + ty: &i32
-+                                          // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ ref_deref[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) })
++                                          // + val: Unevaluated(main, [], Some(promoted[0]))
 +                                          // mir::Constant
 +                                          // + span: $DIR/ref_deref.rs:5:6: 5:10
 +                                          // + literal: Const { ty: &i32, val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ ref_deref[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) }) }

src/test/mir-opt/const_prop/ref_deref_project.main.ConstProp.diff

@@ -14,7 +14,7 @@
           _4 = const main::promoted[0];    // scope 0 at $DIR/ref_deref_project.rs:5:6: 5:17
                                            // ty::Const
                                            // + ty: &(i32, i32)
-                                           // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ ref_deref_project[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) })
+                                           // + val: Unevaluated(main, [], Some(promoted[0]))
                                            // mir::Constant
                                            // + span: $DIR/ref_deref_project.rs:5:6: 5:17
                                            // + literal: Const { ty: &(i32, i32), val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ ref_deref_project[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) }) }

src/test/mir-opt/const_prop/ref_deref_project.main.PromoteTemps.diff

@@ -17,7 +17,7 @@
 +         _4 = const main::promoted[0];    // scope 0 at $DIR/ref_deref_project.rs:5:6: 5:17
 +                                          // ty::Const
 +                                          // + ty: &(i32, i32)
-+                                          // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ ref_deref_project[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) })
++                                          // + val: Unevaluated(main, [], Some(promoted[0]))
 +                                          // mir::Constant
 +                                          // + span: $DIR/ref_deref_project.rs:5:6: 5:17
 +                                          // + literal: Const { ty: &(i32, i32), val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ ref_deref_project[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) }) }

src/test/mir-opt/const_prop/slice_len.main.ConstProp.32bit.diff

@@ -21,7 +21,7 @@
           _9 = const main::promoted[0];    // scope 0 at $DIR/slice_len.rs:5:6: 5:19
                                            // ty::Const
                                            // + ty: &[u32; 3]
-                                           // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ slice_len[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) })
+                                           // + val: Unevaluated(main, [], Some(promoted[0]))
                                            // mir::Constant
                                            // + span: $DIR/slice_len.rs:5:6: 5:19
                                            // + literal: Const { ty: &[u32; 3], val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ slice_len[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) }) }

src/test/mir-opt/const_prop/slice_len.main.ConstProp.64bit.diff

@@ -21,7 +21,7 @@
           _9 = const main::promoted[0];    // scope 0 at $DIR/slice_len.rs:5:6: 5:19
                                            // ty::Const
                                            // + ty: &[u32; 3]
-                                           // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ slice_len[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) })
+                                           // + val: Unevaluated(main, [], Some(promoted[0]))
                                            // mir::Constant
                                            // + span: $DIR/slice_len.rs:5:6: 5:19
                                            // + literal: Const { ty: &[u32; 3], val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ slice_len[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) }) }

src/test/mir-opt/inline/inline_retag.bar.Inline.after.mir

@@ -35,7 +35,7 @@ fn bar() -> bool {
         _10 = const bar::promoted[1];    // scope 1 at $DIR/inline-retag.rs:12:7: 12:9
                                          // ty::Const
                                          // + ty: &i32
-                                         // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:4 ~ inline_retag[317d]::bar), const_param_did: None }, substs: [], promoted: Some(promoted[1]) })
+                                         // + val: Unevaluated(bar, [], Some(promoted[1]))
                                          // mir::Constant
                                          // + span: $DIR/inline-retag.rs:12:7: 12:9
                                          // + literal: Const { ty: &i32, val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:4 ~ inline_retag[317d]::bar), const_param_did: None }, substs: [], promoted: Some(promoted[1]) }) }
@@ -49,7 +49,7 @@ fn bar() -> bool {
         _9 = const bar::promoted[0];     // scope 1 at $DIR/inline-retag.rs:12:11: 12:14
                                          // ty::Const
                                          // + ty: &i32
-                                         // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:4 ~ inline_retag[317d]::bar), const_param_did: None }, substs: [], promoted: Some(promoted[0]) })
+                                         // + val: Unevaluated(bar, [], Some(promoted[0]))
                                          // mir::Constant
                                          // + span: $DIR/inline-retag.rs:12:11: 12:14
                                          // + literal: Const { ty: &i32, val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:4 ~ inline_retag[317d]::bar), const_param_did: None }, substs: [], promoted: Some(promoted[0]) }) }

src/test/mir-opt/issue_73223.main.PreCodegen.32bit.diff

@@ -63,7 +63,7 @@
           _20 = const main::promoted[0];   // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
                                            // ty::Const
                                            // + ty: &i32
-                                           // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ issue_73223[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) })
+                                           // + val: Unevaluated(main, [], Some(promoted[0]))
                                            // mir::Constant
                                            // + span: $SRC_DIR/core/src/macros/mod.rs:LL:COL
                                            // + literal: Const { ty: &i32, val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ issue_73223[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) }) }

src/test/mir-opt/issue_73223.main.PreCodegen.64bit.diff

@@ -63,7 +63,7 @@
           _20 = const main::promoted[0];   // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
                                            // ty::Const
                                            // + ty: &i32
-                                           // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ issue_73223[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) })
+                                           // + val: Unevaluated(main, [], Some(promoted[0]))
                                            // mir::Constant
                                            // + span: $SRC_DIR/core/src/macros/mod.rs:LL:COL
                                            // + literal: Const { ty: &i32, val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ issue_73223[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) }) }

src/test/mir-opt/issue_73223.main.SimplifyArmIdentity.32bit.diff

@@ -84,7 +84,7 @@
           _28 = const main::promoted[0];   // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
                                            // ty::Const
                                            // + ty: &i32
-                                           // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ issue_73223[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) })
+                                           // + val: Unevaluated(main, [], Some(promoted[0]))
                                            // mir::Constant
                                            // + span: $SRC_DIR/core/src/macros/mod.rs:LL:COL
                                            // + literal: Const { ty: &i32, val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ issue_73223[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) }) }

src/test/mir-opt/issue_73223.main.SimplifyArmIdentity.64bit.diff

@@ -84,7 +84,7 @@
           _28 = const main::promoted[0];   // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
                                            // ty::Const
                                            // + ty: &i32
-                                           // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ issue_73223[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) })
+                                           // + val: Unevaluated(main, [], Some(promoted[0]))
                                            // mir::Constant
                                            // + span: $SRC_DIR/core/src/macros/mod.rs:LL:COL
                                            // + literal: Const { ty: &i32, val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:3 ~ issue_73223[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) }) }

src/test/mir-opt/lower_intrinsics.discriminant.LowerIntrinsics.diff

@@ -47,7 +47,7 @@
           _19 = const discriminant::<T>::promoted[2]; // scope 0 at $DIR/lower_intrinsics.rs:70:42: 70:44
                                            // ty::Const
                                            // + ty: &i32
-                                           // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:27 ~ lower_intrinsics[8787]::discriminant), const_param_did: None }, substs: [T], promoted: Some(promoted[2]) })
+                                           // + val: Unevaluated(discriminant, [T], Some(promoted[2]))
                                            // mir::Constant
                                            // + span: $DIR/lower_intrinsics.rs:70:42: 70:44
                                            // + literal: Const { ty: &i32, val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:27 ~ lower_intrinsics[8787]::discriminant), const_param_did: None }, substs: [T], promoted: Some(promoted[2]) }) }
@@ -71,7 +71,7 @@
           _18 = const discriminant::<T>::promoted[1]; // scope 0 at $DIR/lower_intrinsics.rs:71:42: 71:45
                                            // ty::Const
                                            // + ty: &()
-                                           // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:27 ~ lower_intrinsics[8787]::discriminant), const_param_did: None }, substs: [T], promoted: Some(promoted[1]) })
+                                           // + val: Unevaluated(discriminant, [T], Some(promoted[1]))
                                            // mir::Constant
                                            // + span: $DIR/lower_intrinsics.rs:71:42: 71:45
                                            // + literal: Const { ty: &(), val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:27 ~ lower_intrinsics[8787]::discriminant), const_param_did: None }, substs: [T], promoted: Some(promoted[1]) }) }
@@ -95,7 +95,7 @@
           _17 = const discriminant::<T>::promoted[0]; // scope 0 at $DIR/lower_intrinsics.rs:72:42: 72:47
                                            // ty::Const
                                            // + ty: &E
-                                           // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:27 ~ lower_intrinsics[8787]::discriminant), const_param_did: None }, substs: [T], promoted: Some(promoted[0]) })
+                                           // + val: Unevaluated(discriminant, [T], Some(promoted[0]))
                                            // mir::Constant
                                            // + span: $DIR/lower_intrinsics.rs:72:42: 72:47
                                            // + literal: Const { ty: &E, val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:27 ~ lower_intrinsics[8787]::discriminant), const_param_did: None }, substs: [T], promoted: Some(promoted[0]) }) }

src/test/mir-opt/match_false_edges.full_tested_match.PromoteTemps.after.mir

@@ -54,7 +54,7 @@ fn full_tested_match() -> () {
         _11 = const full_tested_match::promoted[0]; // scope 0 at $DIR/match_false_edges.rs:16:14: 16:15
                                          // ty::Const
                                          // + ty: &std::option::Option<i32>
-                                         // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:5 ~ match_false_edges[317d]::full_tested_match), const_param_did: None }, substs: [], promoted: Some(promoted[0]) })
+                                         // + val: Unevaluated(full_tested_match, [], Some(promoted[0]))
                                          // mir::Constant
                                          // + span: $DIR/match_false_edges.rs:16:14: 16:15
                                          // + literal: Const { ty: &std::option::Option<i32>, val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:5 ~ match_false_edges[317d]::full_tested_match), const_param_did: None }, substs: [], promoted: Some(promoted[0]) }) }

src/test/mir-opt/retag.main.SimplifyCfg-elaborate-drops.after.mir

@@ -149,7 +149,7 @@ fn main() -> () {
         _27 = const main::promoted[0];   // scope 7 at $DIR/retag.rs:47:21: 47:23
                                          // ty::Const
                                          // + ty: &i32
-                                         // + val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:13 ~ retag[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) })
+                                         // + val: Unevaluated(main, [], Some(promoted[0]))
                                          // mir::Constant
                                          // + span: $DIR/retag.rs:47:21: 47:23
                                          // + literal: Const { ty: &i32, val: Unevaluated(Unevaluated { def: WithOptConstParam { did: DefId(0:13 ~ retag[317d]::main), const_param_did: None }, substs: [], promoted: Some(promoted[0]) }) }