--- /dev/null
+# RUN: not llc -march=x86-64 -start-after machine-sink -stop-after machine-sink -o /dev/null %s 2>&1 | FileCheck %s
+
+--- |
+
+ define i32 @test(i32 %a) {
+ body:
+ ret i32 %a
+ }
+
+...
+---
+name: test
+isSSA: true
+tracksRegLiveness: true
+registers:
+ - { id: 0, class: gr32 }
+liveins:
+ # CHECK: [[@LINE+1]]:34: expected a virtual register
+ - { reg: '%edi', virtual-reg: '%edi' }
+body:
+ - id: 0
+ name: body
+ liveins: [ '%edi' ]
+ instructions:
+ - '%0 = COPY %edi'
+ - '%eax = COPY %0'
+ - 'RETQ %eax'
+...