[PATCH] [IRBuilder] A method for creating a vector from scalar values

[Sanjoy Das]

LGTM with one minor comment inline.


================
Comment at: include/llvm/IR/IRBuilder.h:1617
@@ +1616,3 @@
+  Value *CreateVectorPack(ArrayRef<Value *> Elts, const Twine &Name = "") {
+    assert(Elts.size() > 0 && "Cannot pack an empty vector");
+    auto *VectorTy = VectorType::get(Elts.front()->getType(), Elts.size());
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Mild preference: `assert(!Elts.empty() ...`.

http://reviews.llvm.org/D9372

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