--- /dev/null
+# RUN: not llc -start-after branch-folder -stop-after branch-folder -o /dev/null %s 2>&1 | FileCheck %s
+# This test ensures that an error is reported when the mir file has LLVM IR and
+# one of the machine functions has a name that doesn't match any function in
+# the LLVM IR.
+
+--- |
+
+ define i32 @foo() {
+ ret i32 0
+ }
+
+...
+---
+name: foo
+body:
+ - id: 0
+...
+---
+# CHECK: function 'faa' isn't defined in the provided LLVM IR
+name: faa
+body:
+ - id: 0
+...