diff options
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index 52a71b91d93..8ea7ce94da1 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -5228,8 +5228,8 @@ SDValue SelectionDAG::getNode(unsigned Opcode, const SDLoc &DL, EVT VT, "The result of EXTRACT_VECTOR_ELT must be at least as wide as the \ element type of the vector."); - // EXTRACT_VECTOR_ELT of an UNDEF is an UNDEF. - if (N1.isUndef()) + // Extract from an undefined value or using an undefined index is undefined. + if (N1.isUndef() || N2.isUndef()) return getUNDEF(VT); // EXTRACT_VECTOR_ELT of out-of-bounds element is an UNDEF |
