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| author | Duncan Sands <baldrick@free.fr> | 2007-10-19 13:06:17 +0000 |
|---|---|---|
| committer | Duncan Sands <baldrick@free.fr> | 2007-10-19 13:06:17 +0000 |
| commit | c8ca2365e5fcd1cd3b69d4324106d6ebb28a152a (patch) | |
| tree | 583b8fa39f5dc52da30f1ccfbb0d49f6fef7b072 /lib | |
| parent | 5d868b1ffedfb4917abcb3b41afa6e21d9160ff7 (diff) | |
| download | external_llvm-c8ca2365e5fcd1cd3b69d4324106d6ebb28a152a.zip external_llvm-c8ca2365e5fcd1cd3b69d4324106d6ebb28a152a.tar.gz external_llvm-c8ca2365e5fcd1cd3b69d4324106d6ebb28a152a.tar.bz2 | |
Support for expanding ADDE and SUBE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43175 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeDAGTypes.cpp | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAGTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAGTypes.cpp index 38ff229..82a91ba 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeDAGTypes.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeDAGTypes.cpp @@ -153,6 +153,7 @@ private: void ExpandResult_BSWAP (SDNode *N, SDOperand &Lo, SDOperand &Hi); void ExpandResult_ADDSUB (SDNode *N, SDOperand &Lo, SDOperand &Hi); void ExpandResult_ADDSUBC (SDNode *N, SDOperand &Lo, SDOperand &Hi); + void ExpandResult_ADDSUBE (SDNode *N, SDOperand &Lo, SDOperand &Hi); void ExpandResult_SELECT (SDNode *N, SDOperand &Lo, SDOperand &Hi); void ExpandResult_SELECT_CC (SDNode *N, SDOperand &Lo, SDOperand &Hi); void ExpandResult_MUL (SDNode *N, SDOperand &Lo, SDOperand &Hi); @@ -653,6 +654,8 @@ void DAGTypeLegalizer::ExpandResult(SDNode *N, unsigned ResNo) { case ISD::SUB: ExpandResult_ADDSUB(N, Lo, Hi); break; case ISD::ADDC: case ISD::SUBC: ExpandResult_ADDSUBC(N, Lo, Hi); break; + case ISD::ADDE: + case ISD::SUBE: ExpandResult_ADDSUBE(N, Lo, Hi); break; case ISD::SELECT: ExpandResult_SELECT(N, Lo, Hi); break; case ISD::SELECT_CC: ExpandResult_SELECT_CC(N, Lo, Hi); break; case ISD::MUL: ExpandResult_MUL(N, Lo, Hi); break; @@ -907,6 +910,25 @@ void DAGTypeLegalizer::ExpandResult_ADDSUBC(SDNode *N, ReplaceLegalValueWith(SDOperand(N, 1), Hi.getValue(1)); } +void DAGTypeLegalizer::ExpandResult_ADDSUBE(SDNode *N, + SDOperand &Lo, SDOperand &Hi) { + // Expand the subcomponents. + SDOperand LHSL, LHSH, RHSL, RHSH; + GetExpandedOp(N->getOperand(0), LHSL, LHSH); + GetExpandedOp(N->getOperand(1), RHSL, RHSH); + SDVTList VTList = DAG.getVTList(LHSL.getValueType(), MVT::Flag); + SDOperand LoOps[3] = { LHSL, RHSL, N->getOperand(2) }; + SDOperand HiOps[3] = { LHSH, RHSH }; + + Lo = DAG.getNode(N->getOpcode(), VTList, LoOps, 3); + HiOps[2] = Lo.getValue(1); + Hi = DAG.getNode(N->getOpcode(), VTList, HiOps, 3); + + // Legalized the flag result - switch anything that used the old flag to + // use the new one. + ReplaceLegalValueWith(SDOperand(N, 1), Hi.getValue(1)); +} + void DAGTypeLegalizer::ExpandResult_MUL(SDNode *N, SDOperand &Lo, SDOperand &Hi) { MVT::ValueType VT = N->getValueType(0); |