diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index bf664a8e64d..af639169526 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2007-06-05  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR tree-optimization/32215
+	* tree-vectorizer.c (supportable_widening_operation): Return false
+	for unsupported FIX_TRUNC_EXPR tree code.
+	(supportable_narrowing_operation): Ditto for FLOAT_EXPR tree code.
+
 2007-06-06  Nathan Froyd  <froydnj@codesourcery.com>
 
 	* config/rs6000/rs6000.h (FIXED_SCRATCH): Use r0 as a scratch
diff --git a/gcc/tree-vectorizer.c b/gcc/tree-vectorizer.c
index df884f42242..be2d6b3c7f7 100644
--- a/gcc/tree-vectorizer.c
+++ b/gcc/tree-vectorizer.c
@@ -1841,6 +1841,12 @@ supportable_widening_operation (enum tree_code code, tree stmt, tree vectype,
         }
       break;
 
+    case FIX_TRUNC_EXPR:
+      /* ??? Not yet implemented due to missing VEC_UNPACK_FIX_TRUNC_HI_EXPR/
+	 VEC_UNPACK_FIX_TRUNC_LO_EXPR tree codes and optabs used for
+	 computing the operation.  */
+      return false;
+
     default:
       gcc_unreachable ();
     }
@@ -1903,6 +1909,11 @@ supportable_narrowing_operation (enum tree_code code,
       c1 = VEC_PACK_FIX_TRUNC_EXPR;
       break;
 
+    case FLOAT_EXPR:
+      /* ??? Not yet implemented due to missing VEC_PACK_FLOAT_EXPR
+	 tree code and optabs used for computing the operation.  */
+      return false;
+
     default:
       gcc_unreachable ();
     }