2012-01-19  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

	PR rtl-optimization/51856
	* reload.c (find_reloads_subreg_address): Set the address_reloaded
	flag to reloaded.

	* gcc.c-torture/compile/pr51856.c: New testcase.

--- gcc/reload.c.jj	2012-01-05 21:54:36.000000000 +0100
+++ gcc/reload.c	2012-01-19 20:17:26.151735687 +0100
@@ -6232,7 +6232,7 @@ find_reloads_subreg_address (rtx x, int 
 	}
     }
   if (reloaded && address_reloaded)
-    *address_reloaded = 1;
+    *address_reloaded = reloaded;
 
   return x;
 }
--- gcc/testsuite/gcc.c-torture/compile/pr51856.c.jj	2012-01-19 20:17:26.151735687 +0100
+++ gcc/testsuite/gcc.c-torture/compile/pr51856.c	2012-01-19 20:17:26.151735687 +0100
@@ -0,0 +1,23 @@
+struct B { int b1; long long b2, b3; int b4; };
+struct C { char c1[40], c2, c3[96]; long long c4[5], c5; char c6[596]; };
+void fn1 (long long), fn2 (char *, int), fn4 (void);
+int r, fn3 (int, const char *, int, char *, int, int);
+
+void
+foo (int t, int u, int v, int w, int x, int y, struct B *z)
+{
+  char c[512], d[512], e;
+  struct C g;
+  long long f, h[255];
+  struct B j;
+  __builtin_bzero (&j, sizeof j);
+  if (y > w)
+    fn4 ();
+  __builtin_bzero (&g, sizeof g);
+  g.c5 = h[0];
+  fn1 (z ? z->b3 : f);
+  g.c2 = y;
+  fn2 (d, 256);
+  if (fn3 (r, "", e, c, 0, 16))
+    fn4 ();
+}