1 files changed, 18 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/graphite/pr42521.c b/gcc/testsuite/gcc.dg/graphite/pr42521.c
new file mode 100644
index 000000000..2695df579
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/graphite/pr42521.c
@@ -0,0 +1,18 @@
+/* { dg-options "-O3 -fgraphite-identity" } */
+
+extern int *A;
+extern int B[][4];
+
+void foo(int im, int jm, int cond)
+{
+  int i, j;
+  if (cond)
+    for (i = 0; i < 256; i++)
+      A[i] = 0;
+
+  for (i = 0; i < im; i++)
+    for (j = 1; j < jm; j++)
+      if (jm != 8 || j != jm >> 1)
+        B[j][0] ^= B[j-1][0];
+
+}