===================================================================
@@ -3176,6 +3176,8 @@ pass_if_conversion::execute (function *f
for (unsigned i = 0; i < preds.length (); ++i)
{
gimple *g = preds[i];
+ if (!gimple_bb (g))
+ continue;
unsigned ifcvt_loop = tree_to_uhwi (gimple_call_arg (g, 0));
if (!get_loop (fun, ifcvt_loop))
{
===================================================================
@@ -0,0 +1,24 @@
+/* { dg-do compile } */
+/* { dg-options "-O -ftree-loop-if-convert -ftree-loop-vectorize -fno-tree-ch" } */
+
+int h3;
+
+void
+in (void)
+{
+ long int zr;
+ int ee = 0;
+
+ for (zr = 0; zr < 1; zr = h3)
+ {
+ ee = !!h3 ? zr : 0;
+
+ h3 = 0;
+ while (h3 < 0)
+ h3 = 0;
+ }
+
+ h3 = 0;
+ while (h3 < 1)
+ h3 = !!ee ? (!!h3 + 1) : 0;
+}