diff --git a/tests/mir-opt/deref-patterns/string.foo.PreCodegen.after.mir b/tests/mir-opt/building/match/deref-patterns/string.foo.PreCodegen.after.mir
similarity index 100%
rename from tests/mir-opt/deref-patterns/string.foo.PreCodegen.after.mir
rename to tests/mir-opt/building/match/deref-patterns/string.foo.PreCodegen.after.mir
diff --git a/tests/mir-opt/deref-patterns/string.rs b/tests/mir-opt/building/match/deref-patterns/string.rs
similarity index 100%
rename from tests/mir-opt/deref-patterns/string.rs
rename to tests/mir-opt/building/match/deref-patterns/string.rs
diff --git a/tests/mir-opt/exponential_or.match_tuple.SimplifyCfg-initial.after.mir b/tests/mir-opt/building/match/exponential_or.match_tuple.SimplifyCfg-initial.after.mir
similarity index 100%
rename from tests/mir-opt/exponential_or.match_tuple.SimplifyCfg-initial.after.mir
rename to tests/mir-opt/building/match/exponential_or.match_tuple.SimplifyCfg-initial.after.mir
diff --git a/tests/mir-opt/exponential_or.rs b/tests/mir-opt/building/match/exponential_or.rs
similarity index 100%
rename from tests/mir-opt/exponential_or.rs
rename to tests/mir-opt/building/match/exponential_or.rs
diff --git a/tests/mir-opt/building/match_false_edges.full_tested_match.built.after.mir b/tests/mir-opt/building/match/match_false_edges.full_tested_match.built.after.mir
similarity index 100%
rename from tests/mir-opt/building/match_false_edges.full_tested_match.built.after.mir
rename to tests/mir-opt/building/match/match_false_edges.full_tested_match.built.after.mir
diff --git a/tests/mir-opt/building/match_false_edges.full_tested_match2.built.after.mir b/tests/mir-opt/building/match/match_false_edges.full_tested_match2.built.after.mir
similarity index 100%
rename from tests/mir-opt/building/match_false_edges.full_tested_match2.built.after.mir
rename to tests/mir-opt/building/match/match_false_edges.full_tested_match2.built.after.mir
diff --git a/tests/mir-opt/building/match_false_edges.main.built.after.mir b/tests/mir-opt/building/match/match_false_edges.main.built.after.mir
similarity index 100%
rename from tests/mir-opt/building/match_false_edges.main.built.after.mir
rename to tests/mir-opt/building/match/match_false_edges.main.built.after.mir
diff --git a/tests/mir-opt/building/match_false_edges.rs b/tests/mir-opt/building/match/match_false_edges.rs
similarity index 100%
rename from tests/mir-opt/building/match_false_edges.rs
rename to tests/mir-opt/building/match/match_false_edges.rs
diff --git a/tests/mir-opt/building/simple_match.match_bool.built.after.mir b/tests/mir-opt/building/match/simple_match.match_bool.built.after.mir
similarity index 100%
rename from tests/mir-opt/building/simple_match.match_bool.built.after.mir
rename to tests/mir-opt/building/match/simple_match.match_bool.built.after.mir
diff --git a/tests/mir-opt/building/simple_match.rs b/tests/mir-opt/building/match/simple_match.rs
similarity index 100%
rename from tests/mir-opt/building/simple_match.rs
rename to tests/mir-opt/building/match/simple_match.rs
diff --git a/tests/mir-opt/match_test.main.SimplifyCfg-initial.after.mir b/tests/mir-opt/building/match/sort_candidates.disjoint_ranges.SimplifyCfg-initial.after.mir
similarity index 95%
rename from tests/mir-opt/match_test.main.SimplifyCfg-initial.after.mir
rename to tests/mir-opt/building/match/sort_candidates.disjoint_ranges.SimplifyCfg-initial.after.mir
index 107f56f7f69..149c13a8c2f 100644
--- a/tests/mir-opt/match_test.main.SimplifyCfg-initial.after.mir
+++ b/tests/mir-opt/building/match/sort_candidates.disjoint_ranges.SimplifyCfg-initial.after.mir
@@ -1,6 +1,6 @@
-// MIR for `main` after SimplifyCfg-initial
+// MIR for `disjoint_ranges` after SimplifyCfg-initial
 
-fn main() -> () {
+fn disjoint_ranges() -> () {
     let mut _0: ();
     let _1: i32;
     let _3: i32;
diff --git a/tests/mir-opt/match_test.rs b/tests/mir-opt/building/match/sort_candidates.rs
similarity index 64%
rename from tests/mir-opt/match_test.rs
rename to tests/mir-opt/building/match/sort_candidates.rs
index e465289e427..755e445ed18 100644
--- a/tests/mir-opt/match_test.rs
+++ b/tests/mir-opt/building/match/sort_candidates.rs
@@ -1,10 +1,9 @@
 // skip-filecheck
-// Make sure redundant testing paths in `match` expressions are sorted out.
-
+// Check specific cases of sorting candidates in match lowering.
 #![feature(exclusive_range_pattern)]
 
-// EMIT_MIR match_test.main.SimplifyCfg-initial.after.mir
-fn main() {
+// EMIT_MIR sort_candidates.disjoint_ranges.SimplifyCfg-initial.after.mir
+fn disjoint_ranges() {
     let x = 3;
     let b = true;
 
@@ -17,3 +16,5 @@ fn main() {
         _ => 3,
     };
 }
+
+fn main() {}