diff options
Diffstat (limited to 'lib/Target/PowerPC/PPCISelPattern.cpp')
| -rw-r--r-- | lib/Target/PowerPC/PPCISelPattern.cpp | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/lib/Target/PowerPC/PPCISelPattern.cpp b/lib/Target/PowerPC/PPCISelPattern.cpp index 88ad79dbc8..6c6ad337b9 100644 --- a/lib/Target/PowerPC/PPCISelPattern.cpp +++ b/lib/Target/PowerPC/PPCISelPattern.cpp @@ -192,8 +192,16 @@ PPC32TargetLowering::LowerArguments(Function &F, SelectionDAG &DAG) { // If the function takes variable number of arguments, make a frame index for // the start of the first vararg value... for expansion of llvm.va_start. - if (F.isVarArg()) + if (F.isVarArg()) { VarArgsFrameIndex = MFI->CreateFixedObject(4, ArgOffset); + // If this function is vararg, store r4-r10 to their spots on the stack so + // that they may be loaded by dereferencing va_next + SDOperand FIN = DAG.getFrameIndex(VarArgsFrameIndex, MVT::i32); + SDOperand Val = DAG.getCopyFromReg(PPC::R4, MVT::i32, DAG.getRoot()); + SDOperand Store = DAG.getNode(ISD::STORE, MVT::Other, Val, Val, FIN); + DAG.setRoot(Val.getValue(1)); + ArgValues.push_back(Store); + } return ArgValues; } @@ -1352,7 +1360,7 @@ unsigned ISel::SelectExpr(SDOperand N) { BuildMI(BB, PPC::SRW, 2, Tmp3).addReg(ShiftOpLo).addReg(Tmp1); BuildMI(BB, PPC::OR, 2, Tmp4).addReg(Tmp2).addReg(Tmp3); BuildMI(BB, PPC::ADDI, 2, Tmp5).addReg(SHReg).addSImm(-32); - BuildMI(BB, PPC::SLW, 2, Tmp6).addReg(ShiftOpHi).addReg(Tmp5); + BuildMI(BB, PPC::SLW, 2, Tmp6).addReg(ShiftOpLo).addReg(Tmp5); BuildMI(BB, PPC::OR, 2, Result+1).addReg(Tmp4).addReg(Tmp6); BuildMI(BB, PPC::SLW, 2, Result).addReg(ShiftOpLo).addReg(SHReg); } else if (ISD::SRL_PARTS == opcode) { |