Simplify condition checking as CONCAT assume all inputs of the same type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166260 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 2227096..17386b7 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -8629,9 +8629,9 @@
// (extract_subvec (concat V1, V2, ...), i)
// Into:
// Vi if possible
- for (unsigned i = 0, e = V->getNumOperands(); i != e; ++i)
- if (V->getOperand(i).getValueType() != NVT)
- return SDValue();
+ // Only operand 0 is checked as 'concat' assumes all inputs of the same type.
+ if (V->getOperand(0).getValueType() != NVT)
+ return SDValue();
unsigned Idx = dyn_cast<ConstantSDNode>(N->getOperand(1))->getZExtValue();
unsigned NumElems = NVT.getVectorNumElements();
assert((Idx % NumElems) == 0 &&