--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/c-c++-common/cxxbitfields-3.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,22 @@
+/* { dg-do compile { target i?86-*-* x86_64-*-* } } */
+/* { dg-options "-O2 --param allow-store-data-races=0" } */
+
+/* Make sure we don't narrow down to a QI or HI to store into VAR.J,
+   but instead use an SI.  */
+
+struct S
+{ 
+  volatile int i: 4;
+  volatile int j: 4;
+  volatile int k: 8;
+  volatile int l: 8;
+  volatile int m: 8;
+} var;
+
+void setit()
+{ 
+  var.j = 5;
+}
+
+/* { dg-final { scan-assembler "movl.*, _?var" { target nonpic } } } */
+/* { dg-final { scan-assembler "movl.*, (_?var|\\(%)" { target { ! nonpic } } } } */