diff --git a/llvm/test/Transforms/InstCombine/memcpy-from-global.ll b/llvm/test/Transforms/InstCombine/memcpy-from-global.ll
index 4790139eea0def..67fb0596e1a9e7 100644
--- a/llvm/test/Transforms/InstCombine/memcpy-from-global.ll
+++ b/llvm/test/Transforms/InstCombine/memcpy-from-global.ll
@@ -366,4 +366,16 @@ define void @memcpy_from_just_readonly(ptr readonly align 8 dereferenceable(124)
   ret void
 }
 
+; FIXME: Test that we incorrectly elide a volatile memcpy.
+define void @volatile_memcpy() {
+; CHECK-LABEL: @volatile_memcpy(
+; CHECK-NEXT:    call void @bar(ptr nonnull @H) #[[ATTR3]]
+; CHECK-NEXT:    ret void
+;
+  %A = alloca %U, align 16
+  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %A, ptr align 4 @H, i64 20, i1 true)
+  call void @bar(ptr %A) readonly
+  ret void
+}
+
 attributes #0 = { null_pointer_is_valid }