diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp b/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp index b6f74aea41..693ac68e30 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp @@ -224,6 +224,9 @@ SDValue VectorLegalizer::LegalizeOp(SDValue Op) { } SDValue VectorLegalizer::PromoteVectorOp(SDValue Op) { + // Vector "promotion" is basically just bitcasting and doing the operation + // in a different type. For example, x86 promotes ISD::AND on v2i32 to + // v1i64. MVT VT = Op.getValueType(); assert(Op.getNode()->getNumValues() == 1 && "Can't promote a vector with multiple results!"); |