1 files changed, 33 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/pr57915.c b/gcc/testsuite/gcc.target/i386/pr57915.c
new file mode 100644
index 0000000000..0b143e0cc4
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr57915.c
@@ -0,0 +1,33 @@
+/* PR rtl-optimization/57915 */
+/* { dg-do compile } */
+/* { dg-options "-Os" } */
+
+extern struct T { char a[8]; char b[16]; } t;
+int c;
+void foo (void);
+
+extern inline char *
+baz (char *x, const char *y)
+{
+  const char *e = y;
+  unsigned long f, g;
+  asm ("" : "+c" (f), "+D" (e) : "a" ('\0'), "X" (*e));
+  g = e - 1 - y;
+  __builtin_memcpy (x, y, g);
+  x[g] = '\0';
+  return x;
+}
+
+void
+bar (void)
+{
+  char d[16];
+  baz (d, t.b);
+
+  for (;;)
+    {
+      foo ();
+      if (c)
+	baz (d, t.b);
+    }
+}