From 718da3d1f6976a1bf89f960519ddab1316637c9a Mon Sep 17 00:00:00 2001
From: David Majnemer <david.majnemer@gmail.com>
Date: Fri, 29 Jul 2016 18:48:27 +0000
Subject: [ConstantFolding] Handle bitcasts of undef fp vector elements

We used the wrong type for constructing a zero vector element which led
to type mismatches.

This fixes PR28771.

llvm-svn: 277197
---
 llvm/lib/Analysis/ConstantFolding.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'llvm/lib')

diff --git a/llvm/lib/Analysis/ConstantFolding.cpp b/llvm/lib/Analysis/ConstantFolding.cpp
index 60b94a903e3..39e422f164c 100644
--- a/llvm/lib/Analysis/ConstantFolding.cpp
+++ b/llvm/lib/Analysis/ConstantFolding.cpp
@@ -187,7 +187,7 @@ Constant *FoldBitCast(Constant *C, Type *DestTy, const DataLayout &DL) {
       for (unsigned j = 0; j != Ratio; ++j) {
         Constant *Src = C->getAggregateElement(SrcElt++);
         if (Src && isa<UndefValue>(Src))
-          Src = Constant::getNullValue(SrcEltTy);
+          Src = Constant::getNullValue(C->getType()->getVectorElementType());
         else
           Src = dyn_cast_or_null<ConstantInt>(Src);
         if (!Src)  // Reject constantexpr elements.
-- 
cgit v1.2.3