diff options
| author | Nadav Rotem <nadav.rotem@intel.com> | 2012-07-15 20:39:08 +0000 |
|---|---|---|
| committer | Nadav Rotem <nadav.rotem@intel.com> | 2012-07-15 20:39:08 +0000 |
| commit | 46646572f76513e39bcdd0e06c66668ec1caf5bc (patch) | |
| tree | 69e68f064dc6bf83e13e6eba969feaaa65a89cc7 /lib/CodeGen | |
| parent | d896e242993fd04c013dda8987c232cdcab63dd4 (diff) | |
Fix a bug in the scalarization of BUILD_VECTOR. BUILD_VECTOR elements may be wider than the output element type. Make sure to trunc them if needed.
Together with Michael Kuperstein <michael.m.kuperstein@intel.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160235 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeTypes.h | 1 | ||||
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp | 10 |
2 files changed, 10 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypes.h b/lib/CodeGen/SelectionDAG/LegalizeTypes.h index 106b086184..94fc9761ec 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeTypes.h +++ b/lib/CodeGen/SelectionDAG/LegalizeTypes.h @@ -516,6 +516,7 @@ private: SDValue ScalarizeVecRes_InregOp(SDNode *N); SDValue ScalarizeVecRes_BITCAST(SDNode *N); + SDValue ScalarizeVecRes_BUILD_VECTOR(SDNode *N); SDValue ScalarizeVecRes_CONVERT_RNDSAT(SDNode *N); SDValue ScalarizeVecRes_EXTRACT_SUBVECTOR(SDNode *N); SDValue ScalarizeVecRes_FP_ROUND(SDNode *N); diff --git a/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp index d09411c42f..88479e30bd 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp @@ -48,7 +48,7 @@ void DAGTypeLegalizer::ScalarizeVectorResult(SDNode *N, unsigned ResNo) { case ISD::MERGE_VALUES: R = ScalarizeVecRes_MERGE_VALUES(N, ResNo);break; case ISD::BITCAST: R = ScalarizeVecRes_BITCAST(N); break; - case ISD::BUILD_VECTOR: R = N->getOperand(0); break; + case ISD::BUILD_VECTOR: R = ScalarizeVecRes_BUILD_VECTOR(N); break; case ISD::CONVERT_RNDSAT: R = ScalarizeVecRes_CONVERT_RNDSAT(N); break; case ISD::EXTRACT_SUBVECTOR: R = ScalarizeVecRes_EXTRACT_SUBVECTOR(N); break; case ISD::FP_ROUND: R = ScalarizeVecRes_FP_ROUND(N); break; @@ -152,6 +152,14 @@ SDValue DAGTypeLegalizer::ScalarizeVecRes_BITCAST(SDNode *N) { NewVT, N->getOperand(0)); } +SDValue DAGTypeLegalizer::ScalarizeVecRes_BUILD_VECTOR(SDNode *N) { + EVT EltVT = N->getValueType(0).getVectorElementType(); + SDValue InOp = N->getOperand(0); + if (InOp.getValueType() != EltVT) + return DAG.getNode(ISD::TRUNCATE, N->getDebugLoc(), EltVT, InOp); + return InOp; +} + SDValue DAGTypeLegalizer::ScalarizeVecRes_CONVERT_RNDSAT(SDNode *N) { EVT NewVT = N->getValueType(0).getVectorElementType(); SDValue Op0 = GetScalarizedVector(N->getOperand(0)); |