2007-07-02 Richard Guenther <rguenther@suse.de>

[pf3gnuchains/gcc-fork.git] / gcc / tree-vrp.c

diff --git a/gcc/tree-vrp.c b/gcc/tree-vrp.c
index 937a76b..06931f1 100644 (file)
--- a/gcc/tree-vrp.c
+++ b/gcc/tree-vrp.c
@@ -2638,6 +2638,14 @@ adjust_range_with_scev (value_range_t *vr, struct loop *loop, tree stmt,
     return;
 
   chrec = instantiate_parameters (loop, analyze_scalar_evolution (loop, var));
+
+  /* Like in PR19590, scev can return a constant function.  */
+  if (is_gimple_min_invariant (chrec))
+    {
+      set_value_range (vr, VR_RANGE, chrec, chrec, vr->equiv);
+      return;
+    }
+
   if (TREE_CODE (chrec) != POLYNOMIAL_CHREC)
     return;