diff options
Diffstat (limited to 'llvm/lib/Target/PowerPC')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp | 30 |
1 files changed, 20 insertions, 10 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp index f2d65697da7..06f363601a4 100644 --- a/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp +++ b/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp @@ -1512,6 +1512,8 @@ SDOperand PPC32DAGToDAGISel::Select(SDOperand Op) { PPC::F8, PPC::F9, PPC::F10, PPC::F11, PPC::F12, PPC::F13 }; + SDOperand InFlag; // Null incoming flag value. + for (unsigned i = 2, e = N->getNumOperands(); i != e; ++i) { unsigned DestReg = 0; MVT::ValueType RegTy; @@ -1528,17 +1530,21 @@ SDOperand PPC32DAGToDAGISel::Select(SDOperand Op) { } if (N->getOperand(i).getOpcode() != ISD::UNDEF) { - SDOperand Reg = CurDAG->getRegister(DestReg, RegTy); - Chain = CurDAG->getNode(ISD::CopyToReg, MVT::Other, Chain, Reg, - Select(N->getOperand(i))); - CallOperands.push_back(Reg); + Chain = CurDAG->getCopyToReg(Chain, DestReg, + Select(N->getOperand(i)), InFlag); + InFlag = Chain.getValue(1); + CallOperands.push_back(CurDAG->getRegister(DestReg, RegTy)); } } // Finally, once everything is in registers to pass to the call, emit the // call itself. - CallOperands.push_back(Chain); - Chain = CurDAG->getTargetNode(CallOpcode, MVT::Other, CallOperands); + if (InFlag.Val) + CallOperands.push_back(InFlag); // Strong dep on register copies. + else + CallOperands.push_back(Chain); // Weak dep on whatever occurs before + Chain = CurDAG->getTargetNode(CallOpcode, MVT::Other, MVT::Flag, + CallOperands); std::vector<SDOperand> CallResults; @@ -1548,18 +1554,22 @@ SDOperand PPC32DAGToDAGISel::Select(SDOperand Op) { case MVT::Other: break; case MVT::i32: if (N->getValueType(1) == MVT::i32) { - Chain = CurDAG->getCopyFromReg(Chain, PPC::R4, MVT::i32).getValue(1); + Chain = CurDAG->getCopyFromReg(Chain, PPC::R4, MVT::i32, + Chain.getValue(1)).getValue(1); CallResults.push_back(Chain.getValue(0)); - Chain = CurDAG->getCopyFromReg(Chain, PPC::R3, MVT::i32).getValue(1); + Chain = CurDAG->getCopyFromReg(Chain, PPC::R3, MVT::i32, + Chain.getValue(1)).getValue(1); CallResults.push_back(Chain.getValue(0)); } else { - Chain = CurDAG->getCopyFromReg(Chain, PPC::R3, MVT::i32).getValue(1); + Chain = CurDAG->getCopyFromReg(Chain, PPC::R3, MVT::i32, + Chain.getValue(1)).getValue(1); CallResults.push_back(Chain.getValue(0)); } break; case MVT::f32: case MVT::f64: - Chain = CurDAG->getCopyFromReg(Chain, PPC::F1, MVT::f64).getValue(1); + Chain = CurDAG->getCopyFromReg(Chain, PPC::F1, MVT::f64, + Chain.getValue(1)).getValue(1); if (N->getValueType(0) == MVT::f64) CallResults.push_back(Chain.getValue(0)); else |
