Identify subpatterns by the path to them instead of spans

src/test/ui/or-patterns/exhaustiveness-unreachable-pattern.rs

@@ -103,8 +103,8 @@ fn main() {
     }
     macro_rules! t_or_f {
         () => {
-            (true // FIXME: should be unreachable
-                        | false)
+            (true //~ ERROR unreachable
+            | false)
         };
     }
     match (true, None) {

src/test/ui/or-patterns/exhaustiveness-unreachable-pattern.stderr

@@ -131,6 +131,17 @@ error: unreachable pattern
 LL |         (true | false, None | Some(true
    |                                    ^^^^
 
+error: unreachable pattern
+  --> $DIR/exhaustiveness-unreachable-pattern.rs:106:14
+   |
+LL |             (true
+   |              ^^^^
+...
+LL |         (true | false, None | Some(t_or_f!())) => {}
+   |                                    --------- in this macro invocation
+   |
+   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
+
 error: unreachable pattern
   --> $DIR/exhaustiveness-unreachable-pattern.rs:117:14
    |
@@ -155,5 +166,5 @@ error: unreachable pattern
 LL |             | true,
    |               ^^^^
 
-error: aborting due to 25 previous errors
+error: aborting due to 26 previous errors
 

src/test/ui/pattern/usefulness/issue-80501-or-pat-and-macro.rs

@@ -1,5 +1,5 @@
+// check-pass
 #![deny(unreachable_patterns)]
-//~^ NOTE: lint level is defined here
 pub enum TypeCtor {
     Slice,
     Array,
@@ -9,13 +9,13 @@ pub struct ApplicationTy(TypeCtor);
 
 macro_rules! ty_app {
     ($ctor:pat) => {
-        ApplicationTy($ctor) //~ ERROR unreachable pattern
+        ApplicationTy($ctor)
     };
 }
 
 fn _foo(ty: ApplicationTy) {
     match ty {
-        ty_app!(TypeCtor::Array) | ty_app!(TypeCtor::Slice) => {} //~ NOTE: in this expansion
+        ty_app!(TypeCtor::Array) | ty_app!(TypeCtor::Slice) => {}
     }
 
     // same as above, with the macro expanded

src/test/ui/pattern/usefulness/issue-80501-or-pat-and-macro.stderr

@@ -1,18 +0,0 @@
-error: unreachable pattern
-  --> $DIR/issue-80501-or-pat-and-macro.rs:12:9
-   |
-LL |         ApplicationTy($ctor)
-   |         ^^^^^^^^^^^^^^^^^^^^
-...
-LL |         ty_app!(TypeCtor::Array) | ty_app!(TypeCtor::Slice) => {}
-   |                                    ------------------------ in this macro invocation
-   |
-note: the lint level is defined here
-  --> $DIR/issue-80501-or-pat-and-macro.rs:1:9
-   |
-LL | #![deny(unreachable_patterns)]
-   |         ^^^^^^^^^^^^^^^^^^^^
-   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
-
-error: aborting due to previous error
-