Index: lib/IR/Instructions.cpp
===================================================================
--- lib/IR/Instructions.cpp
+++ lib/IR/Instructions.cpp
@@ -2978,12 +2978,14 @@
       return false;
 
     // A vector of pointers must have the same number of elements.
-    if (VectorType *SrcVecTy = dyn_cast<VectorType>(SrcTy)) {
-      if (VectorType *DstVecTy = dyn_cast<VectorType>(DstTy))
-        return (SrcVecTy->getNumElements() == DstVecTy->getNumElements());
-
-      return false;
-    }
+    VectorType *SrcVecTy = dyn_cast<VectorType>(SrcTy);
+    VectorType *DstVecTy = dyn_cast<VectorType>(DstTy);
+    if (SrcVecTy && DstVecTy)
+      return (SrcVecTy->getNumElements() == DstVecTy->getNumElements());
+    if (SrcVecTy)
+      return SrcVecTy->getNumElements() == 1;
+    if (DstVecTy)
+      return DstVecTy->getNumElements() == 1;
 
     return true;
   }
Index: test/Verifier/bitcast-pointer-vector-neg.ll
===================================================================
--- /dev/null
+++ test/Verifier/bitcast-pointer-vector-neg.ll
@@ -0,0 +1,10 @@
+; RUN: not llvm-as -disable-output %s 2>&1 | FileCheck %s
+
+target datalayout = "e-p:32:32:32-p1:16:16:16-p2:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n8:16:32"
+
+; CHECK: error: invalid cast opcode for cast from 'i64*' to '<2 x i32*>'
+
+define <2 x i32*> @vector_illegal_bitcast_pointer_to_vector(i64* %a) {
+  %b = bitcast i64* %a to <2 x i32*>
+  ret <2 x i32*> %b
+}
Index: test/Verifier/bitcast-vector-pointer-neg.ll
===================================================================
--- /dev/null
+++ test/Verifier/bitcast-vector-pointer-neg.ll
@@ -0,0 +1,10 @@
+; RUN: not llvm-as -disable-output %s 2>&1 | FileCheck %s
+
+target datalayout = "e-p:32:32:32-p1:16:16:16-p2:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n8:16:32"
+
+; CHECK: error: invalid cast opcode for cast from '<2 x i32*>' to 'i64*'
+
+define i64* @vector_illegal_bitcast_vector_to_pointer(<2 x i32*> %a) {
+  %b = bitcast <2 x i32*> %a to i64*
+  ret i64* %b
+}
Index: test/Verifier/bitcast-vector-pointer-pos.ll
===================================================================
--- /dev/null
+++ test/Verifier/bitcast-vector-pointer-pos.ll
@@ -0,0 +1,14 @@
+; RUN: llvm-as -disable-output %s
+
+target datalayout = "e-p:32:32:32-p1:16:16:16-p2:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n8:16:32"
+
+define <1 x i32*> @vector_legal_bitcast_pointer_to_vector(i64* %a) {
+  %b = bitcast i64* %a to <1 x i32*>
+  ret <1 x i32*> %b
+}
+
+define i64* @vector_legal_bitcast_vector_to_pointer(<1 x i32*> %a) {
+  %b = bitcast <1 x i32*> %a to i64*
+  ret i64* %b
+}
+