OpenCL 1.0 Support: fix a bug with lvalue swizzles
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74324 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index 51c5b3d..a211407 100644
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -606,11 +606,12 @@
cast<llvm::VectorType>(Vec->getType())->getNumElements();
if (NumDstElts == NumSrcElts) {
// Use shuffle vector is the src and destination are the same number
- // of elements
- llvm::SmallVector<llvm::Constant*, 4> Mask;
+ // of elements and restore the vector mask since it is on the side
+ // it will be stored.
+ llvm::SmallVector<llvm::Constant*, 4> Mask(NumDstElts);
for (unsigned i = 0; i != NumSrcElts; ++i) {
unsigned InIdx = getAccessedFieldNo(i, Elts);
- Mask.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, InIdx));
+ Mask[InIdx] = llvm::ConstantInt::get(llvm::Type::Int32Ty, i);
}
llvm::Value *MaskV = llvm::ConstantVector::get(&Mask[0], Mask.size());