1 files changed, 31 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-18.c b/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-18.c
new file mode 100644
index 00000000000..73996eac447
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-18.c
@@ -0,0 +1,31 @@
+/* { dg-do compile } */ 
+/* { dg-options "-O1 -fscalar-evolutions -fdump-tree-scev-details" } */
+
+
+int bar (void);
+
+int foo (int x)
+{
+  int a = -100;
+  int b = 2;
+  
+  while (b)
+    {
+      if (x)
+	a += 3;
+      else
+	a += bar ();
+      
+      /* Exercises the case when one of the branches of the if-phi-node cannot
+	 be determined: [-oo, +oo].  
+	 Since the evolution function is too difficult to handle in the expanded 
+	 form, we have to keep it in its symbolic form:  "b  ->  {2, +, a_1}_1".  */
+      b += a;
+    }
+}
+
+/* a  ->  {-100, +, [min<t, 3>, max<t, 3>]}_1
+   b  ->  {2, +, {[min<t, 3>, max<t, 3>] - 100, +, [min<t, 3>, max<t, 3>]}_1}_1
+*/
+
+/* FIXME. */