diff options
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/Target/Hexagon/HexagonISelDAGToDAG.cpp | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/llvm/lib/Target/Hexagon/HexagonISelDAGToDAG.cpp b/llvm/lib/Target/Hexagon/HexagonISelDAGToDAG.cpp index 22a7b27c12c..6e8d431ee10 100644 --- a/llvm/lib/Target/Hexagon/HexagonISelDAGToDAG.cpp +++ b/llvm/lib/Target/Hexagon/HexagonISelDAGToDAG.cpp @@ -997,13 +997,30 @@ SDNode *HexagonDAGToDAGISel::SelectConstantFP(SDNode *N) { SDNode *HexagonDAGToDAGISel::SelectConstant(SDNode *N) { SDLoc dl(N); if (N->getValueType(0) == MVT::i1) { - SDNode* Result = 0; + SDNode* Result; int32_t Val = cast<ConstantSDNode>(N)->getSExtValue(); - if (Val == -1) - Result = CurDAG->getMachineNode(Hexagon::TFR_PdTrue, dl, MVT::i1); - else if (Val == 0) - Result = CurDAG->getMachineNode(Hexagon::TFR_PdFalse, dl, MVT::i1); - if (Result) { + if (Val == -1) { + // Create the IntReg = 1 node. + SDNode* IntRegTFR = + CurDAG->getMachineNode(Hexagon::A2_tfrsi, dl, MVT::i32, + CurDAG->getTargetConstant(0, MVT::i32)); + + // Pd = IntReg + SDNode* Pd = CurDAG->getMachineNode(Hexagon::C2_tfrrp, dl, MVT::i1, + SDValue(IntRegTFR, 0)); + + // not(Pd) + SDNode* NotPd = CurDAG->getMachineNode(Hexagon::C2_not, dl, MVT::i1, + SDValue(Pd, 0)); + + // xor(not(Pd)) + Result = CurDAG->getMachineNode(Hexagon::C2_xor, dl, MVT::i1, + SDValue(Pd, 0), SDValue(NotPd, 0)); + + // We have just built: + // Rs = Pd + // Pd = xor(not(Pd), Pd) + ReplaceUses(N, Result); return Result; } |
