3 files changed, 38 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 5cfb9f23c6c..5fde36e00a3 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2011-05-11  Jakub Jelinek  <jakub@redhat.com>
+
+	PR debug/48159
+	* gcc.dg/pr48159-1.c: New test.
+	* gcc.dg/pr48159-2.c: New test.
+
 2011-05-11  Richard Guenther  <rguenther@suse.de>
 
 	PR middle-end/48953
diff --git a/gcc/testsuite/gcc.dg/pr48159-1.c b/gcc/testsuite/gcc.dg/pr48159-1.c
new file mode 100644
index 00000000000..cd67e63852f
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr48159-1.c
@@ -0,0 +1,10 @@
+/* PR debug/48159 */
+/* { dg-do compile } */
+/* { dg-options "-O3 -fcompare-debug" } */
+
+void
+foo (double x, int y, double *__restrict z, double *__restrict w)
+{
+  while (y--)
+    *z++ = (*w++ = 0) * x;
+}
diff --git a/gcc/testsuite/gcc.dg/pr48159-2.c b/gcc/testsuite/gcc.dg/pr48159-2.c
new file mode 100644
index 00000000000..25596bf6b39
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr48159-2.c
@@ -0,0 +1,22 @@
+/* PR debug/48159 */
+/* { dg-do compile } */ 
+/* { dg-options "-O2 -ftree-loop-distribution -fcompare-debug" } */
+
+int foo (int * __restrict__ ia, int * __restrict__ ib,
+	 int * __restrict__ oxa, int * __restrict__ oxb)
+{
+  int i;
+  int oya[52], oyb[52];
+  for (i = 0; i < 52; i++)
+    {
+      int w1 = ia[i];
+      int w2 = oxa[i];
+      int w3 = ib[i];
+      int w4 = oxb[i];
+      int w5 = w1 + w2 + 5;
+      oya[i] = (w1 * w2) >> 10;
+      int w6 = w3 + w4 + 6;
+      oyb[i] = (w3 * w4) >> 10;
+    }
+  return oya[22] + oyb[21];
+}