--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/clang/test/CodeGen/PR2001-bitfield-reload.c	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,16 @@
+// RUN: %clang_cc1 -triple i386-unknown-unknown -O3 -emit-llvm -o - %s | FileCheck %s
+// PR2001
+
+/* Test that the result of the assignment properly uses the value *in
+   the bitfield* as opposed to the RHS. */
+static int foo(int i) {
+  struct {
+    int f0 : 2;
+  } x;
+  return (x.f0 = i);
+}
+
+int bar() {
+  // CHECK: ret i32 1
+  return foo(-5) == -1;
+}