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-rw-r--r--gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-36.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-36.c b/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-36.c
new file mode 100644
index 00000000000..40a71819b6e
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-36.c
@@ -0,0 +1,28 @@
+/* APPLE LOCAL file lno */
+/* { dg-do compile } */
+/* { dg-options "-O1 -floop-test -fdump-tree-lptest-details " } */
+
+int foo (int);
+
+int main ()
+{
+ int res;
+ int c[100][200];
+ int a;
+ int x;
+
+ for (a = 1; a < 50; a++)
+ {
+ c[a+1][a] = 2;
+ res += c[a][a];
+
+ /* This case exercises the subscript coupling detection: the dependence
+ detectors have to determine that there is no dependence between
+ c[a+1][a] and c[a][a]. */
+ }
+
+ return res + foo (c[12][13]);
+}
+
+/* { dg-final { diff-tree-dumps "ddall" } } */
+