Merge pull request #12269 from linux-on-ibm-z/swift-4.0-branch-s390x-test

[4.0] Update test case for s390x
diff --git a/test/IRGen/c_functions.swift b/test/IRGen/c_functions.swift
index 4f1516c..613a1b2 100644
--- a/test/IRGen/c_functions.swift
+++ b/test/IRGen/c_functions.swift
@@ -32,3 +32,4 @@
 // armv7s: define hidden swiftcc void  @_T011c_functions30test_indirect_by_val_alignmentyyF()
 // armv7: define hidden swiftcc void  @_T011c_functions30test_indirect_by_val_alignmentyyF()
 // i386: define hidden swiftcc void  @_T011c_functions30test_indirect_by_val_alignmentyyF()
+// s390x: define hidden swiftcc void  @_T011c_functions30test_indirect_by_val_alignmentyyF()