1 files changed, 88 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/pr49390.c b/gcc/testsuite/gcc.c-torture/execute/pr49390.c
new file mode 100644
index 000000000..dfcdea16f
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/pr49390.c
@@ -0,0 +1,88 @@
+/* PR rtl-optimization/49390 */
+
+struct S { unsigned int s1; unsigned int s2; };
+struct T { unsigned int t1; struct S t2; };
+struct U { unsigned short u1; unsigned short u2; };
+struct V { struct U v1; struct T v2; };
+struct S a;
+char *b;
+union { char b[64]; struct V v; } u;
+volatile int v;
+extern void abort (void);
+
+__attribute__((noinline, noclone)) void
+foo (int x, void *y, unsigned int z, unsigned int w)
+{
+  if (x != 4 || y != (void *) &u.v.v2)
+    abort ();
+  v = z + w;
+  v = 16384;
+}
+
+__attribute__((noinline, noclone)) void
+bar (struct S x)
+{
+  v = x.s1;
+  v = x.s2;
+}
+
+__attribute__((noinline, noclone)) int
+baz (struct S *x)
+{
+  v = x->s1;
+  v = x->s2;
+  v = 0;
+  return v + 1;
+}
+
+__attribute__((noinline, noclone)) void
+test (struct S *c)
+{
+  struct T *d;
+  struct S e = a;
+  unsigned int f, g;
+  if (c == 0)
+    c = &e;
+  else
+    {
+      if (c->s2 % 8192 <= 15 || (8192 - c->s2 % 8192) <= 31)
+	foo (1, 0, c->s1, c->s2);
+    }
+  if (!baz (c))
+    return;
+  g = (((struct U *) b)->u2 & 2) ? 32 : __builtin_offsetof (struct V, v2);
+  f = c->s2 % 8192;
+  if (f == 0)
+    {
+      e.s2 += g;
+      f = g;
+    }
+  else if (f < g)
+    {
+      foo (2, 0, c->s1, c->s2);
+      return;
+    }
+  if ((((struct U *) b)->u2 & 1) && f == g)
+    {
+      bar (*c);
+      foo (3, 0, c->s1, c->s2);
+      return;
+    }
+  d = (struct T *) (b + c->s2 % 8192);
+  if (d->t2.s1 >= c->s1 && (d->t2.s1 != c->s1 || d->t2.s2 >= c->s2))
+    foo (4, d, c->s1, c->s2);
+  return;
+}
+
+int
+main ()
+{
+  struct S *c = 0;
+  asm ("" : "+r" (c) : "r" (&a));
+  u.v.v2.t2.s1 = 8192;
+  b = u.b;
+  test (c);
+  if (v != 16384)
+    abort ();
+  return 0;
+}