2004-10-16 Daniel Berlin <dberlin@dberlin.org>

[pf3gnuchains/gcc-fork.git] / gcc / testsuite / gcc.dg / tree-ssa / ltrans-1.c

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ltrans-1.c b/gcc/testsuite/gcc.dg/tree-ssa/ltrans-1.c
new file mode 100644 (file)
index 0000000..bbeef87
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/ltrans-1.c
@@ -0,0 +1,22 @@
+/* { dg-do compile } */ 
+/* { dg-options "-O2 -ftree-loop-linear -fdump-tree-ltrans-all" } */
+
+double u[1782225];
+int foo(int N, int *res)
+{
+  int i, j;
+  double sum = 0.0;
+  /* This loop should be converted to a perfect nest and
+     interchanged. */
+  for (i = 0; i < N; i++)
+    {
+      for (j = 0; j < N; j++)
+       sum = sum + u[i + 1335 * j];
+      
+      u[1336 * i] *= 2;
+    }
+  *res = sum + N;
+}
+/* { dg-final { scan-tree-dump-times "converted loop nest to perfect
+   loop nest" 1 "ltrans"} } */ 
+/* { dg-final { scan-tree-dump-times "transformed loop" 1 "ltrans"} } */