1 files changed, 23 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/pr11001-memcpy-1.c b/gcc/testsuite/gcc.target/i386/pr11001-memcpy-1.c
new file mode 100644
index 000000000..c63f84869
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr11001-memcpy-1.c
@@ -0,0 +1,23 @@
+/* Ensure that we don't use 'rep movX' in the presence of register globals.  */
+/* { dg-do compile } */
+/* { dg-options "-Os -w" } */
+
+extern void *memcpy (void *, const void *, __SIZE_TYPE__);
+
+register int regvar asm("%esi");
+
+int foo[10];
+int bar[10];
+
+char baz[15];
+char quux[15];
+
+void
+do_copy ()
+{
+  memcpy (foo, bar, sizeof foo);
+  memcpy (baz, quux, sizeof baz);
+}
+
+/* { dg-final { scan-assembler-not "rep movsl" } } */
+/* { dg-final { scan-assembler-not "rep movsb" } } */