diff --git a/lib/Bitcode/Writer/BitcodeWriter.cpp b/lib/Bitcode/Writer/BitcodeWriter.cpp
index e34137f6155..e652e082d16 100644
--- a/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -871,8 +871,6 @@ static void WriteConstants(unsigned FirstVal, unsigned LastVal,
         break;
       }
     } else if (const BlockAddress *BA = dyn_cast<BlockAddress>(C)) {
-      assert(BA->getFunction() == BA->getBasicBlock()->getParent() &&
-             "Malformed blockaddress");
       Code = bitc::CST_CODE_BLOCKADDRESS;
       Record.push_back(VE.getTypeID(BA->getFunction()->getType()));
       Record.push_back(VE.getValueID(BA->getFunction()));
diff --git a/test/Bitcode/blockaddress.ll b/test/Bitcode/blockaddress.ll
new file mode 100644
index 00000000000..b9f334176ca
--- /dev/null
+++ b/test/Bitcode/blockaddress.ll
@@ -0,0 +1,30 @@
+; RUN: llvm-as < %s | llvm-dis | FileCheck %s
+; PR9857
+
+define void @f(i8** nocapture %ptr1) {
+; CHECK: define void @f
+entry:
+  br label %here.i
+
+here.i:
+  store i8* blockaddress(@doit, %here), i8** %ptr1, align 8
+; CHECK: blockaddress(@doit, %here)
+  br label %doit.exit
+
+doit.exit:
+  ret void
+}
+
+define void @doit(i8** nocapture %pptr) {
+; CHECK: define void @doit
+entry:
+  br label %here
+
+here:
+  store i8* blockaddress(@doit, %here), i8** %pptr, align 8
+; CHECK: blockaddress(@doit, %here)
+  br label %end
+
+end:
+  ret void
+}