Add IRBuilder::CreateVectorSplat and use it to simplify code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171349 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/SROA.cpp b/lib/Transforms/Scalar/SROA.cpp
index 05401fe..4a20d69 100644
--- a/lib/Transforms/Scalar/SROA.cpp
+++ b/lib/Transforms/Scalar/SROA.cpp
@@ -2660,18 +2660,7 @@
/// \brief Compute a vector splat for a given element value.
Value *getVectorSplat(IRBuilder<> &IRB, Value *V, unsigned NumElements) {
- assert(NumElements > 0 && "Cannot splat to an empty vector.");
-
- // First insert it into a one-element vector so we can shuffle it. It is
- // really silly that LLVM's IR requires this in order to form a splat.
- Value *Undef = UndefValue::get(VectorType::get(V->getType(), 1));
- V = IRB.CreateInsertElement(Undef, V, IRB.getInt32(0),
- getName(".splatinsert"));
-
- // Shuffle the value across the desired number of elements.
- SmallVector<Constant*, 8> Mask(NumElements, IRB.getInt32(0));
- V = IRB.CreateShuffleVector(V, Undef, ConstantVector::get(Mask),
- getName(".splat"));
+ V = IRB.CreateVectorSplat(NumElements, V, NamePrefix);
DEBUG(dbgs() << " splat: " << *V << "\n");
return V;
}