diff options
author | Chris Lattner <sabre@nondot.org> | 2010-02-12 20:49:41 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2010-02-12 20:49:41 +0000 |
commit | fdfeb6976f07ad10d809b922ed7376ba2a3539be (patch) | |
tree | f6ba4446fc9db081e5e3386c57d2db253774c1fa /lib/VMCore/ConstantFold.cpp | |
parent | b3e1bf54b29354c6d332cfaffcc86cd776fd4ca8 (diff) |
Add support for a union type in LLVM IR. Patch by Talin!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96011 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/VMCore/ConstantFold.cpp')
-rw-r--r-- | lib/VMCore/ConstantFold.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/VMCore/ConstantFold.cpp b/lib/VMCore/ConstantFold.cpp index 5c117d8a18..4a245d22c3 100644 --- a/lib/VMCore/ConstantFold.cpp +++ b/lib/VMCore/ConstantFold.cpp @@ -885,6 +885,8 @@ Constant *llvm::ConstantFoldInsertValueInstruction(Constant *Agg, unsigned numOps; if (const ArrayType *AR = dyn_cast<ArrayType>(AggTy)) numOps = AR->getNumElements(); + else if (isa<UnionType>(AggTy)) + numOps = 1; else numOps = cast<StructType>(AggTy)->getNumElements(); @@ -901,6 +903,10 @@ Constant *llvm::ConstantFoldInsertValueInstruction(Constant *Agg, if (const StructType* ST = dyn_cast<StructType>(AggTy)) return ConstantStruct::get(ST->getContext(), Ops, ST->isPacked()); + if (const UnionType* UT = dyn_cast<UnionType>(AggTy)) { + assert(Ops.size() == 1 && "Union can only contain a single value!"); + return ConstantUnion::get(UT, Ops[0]); + } return ConstantArray::get(cast<ArrayType>(AggTy), Ops); } |