1 files changed, 35 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-17.c b/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-17.c
new file mode 100644
index 00000000000..9c624b08ca9
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa-chrec/ssa-chrec-17.c
@@ -0,0 +1,35 @@
+/* { dg-do compile } */ 
+/* { dg-options "-O1 -fscalar-evolutions -fdump-tree-scev-details" } */
+
+
+int bar (void);
+
+void foo ()
+{
+  int a = -100;
+  int b = 2;
+  
+  while (b)
+    {
+      if (bar ())
+	a += 3;
+      else
+	a = 2;
+      
+      /* Exercises the case when one of the branches of the if-phi-node is a constant.
+	 FIXME:  
+	 - What is the chrec representation of such an evolution?  
+	 - Does this kind of code exist in real codes?  */
+      b += a;
+    }
+}
+
+/* For the moment the analyzer is expected to output a "don't know" answer, 
+   both for the initial condition and for the evolution part.  This is done 
+   in the merge condition branches information.  
+   
+   a  ->  [-oo, +oo]
+   b  ->  {2, +, a_1}_1
+*/
+
+/* FIXME. */