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Implement local-exec TLS on PowerPC.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157935 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Roman Divacky
2012-06-04 17:36:38 +00:00
parent 70a07c7fc4
commit fd42ed676e
9 changed files with 89 additions and 11 deletions
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27
lib/Target/PowerPC/PPCISelLowering.cpp
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@@ -905,6 +905,7 @@ bool PPCTargetLowering::SelectAddressRegImm(SDValue N, SDValue &Disp,
&& "Cannot handle constant offsets yet!");
Disp = N.getOperand(1).getOperand(0); // The global address.
assert(Disp.getOpcode() == ISD::TargetGlobalAddress ||
Disp.getOpcode() == ISD::TargetGlobalTLSAddress ||
Disp.getOpcode() == ISD::TargetConstantPool ||
Disp.getOpcode() == ISD::TargetJumpTable);
Base = N.getOperand(0);
@@ -1220,6 +1221,30 @@ SDValue PPCTargetLowering::LowerBlockAddress(SDValue Op,
return LowerLabelRef(TgtBAHi, TgtBALo, isPIC, DAG);
}
SDValue PPCTargetLowering::LowerGlobalTLSAddress(SDValue Op,
SelectionDAG &DAG) const {
GlobalAddressSDNode *GA = cast<GlobalAddressSDNode>(Op);
DebugLoc dl = GA->getDebugLoc();
const GlobalValue *GV = GA->getGlobal();
EVT PtrVT = getPointerTy();
bool is64bit = PPCSubTarget.isPPC64();
TLSModel::Model model = getTargetMachine().getTLSModel(GV);
SDValue TGAHi = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,
PPCII::MO_TPREL16_HA);
SDValue TGALo = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,
PPCII::MO_TPREL16_LO);
if (model != TLSModel::LocalExec)
llvm_unreachable("only local-exec TLS mode supported");
SDValue R13 = DAG.getRegister(is64bit ? PPC::X13 : PPC::R13,
is64bit ? MVT::i64 : MVT::i32);
SDValue Hi = DAG.getNode(PPCISD::Hi, dl, PtrVT, TGAHi, R13);
return DAG.getNode(PPCISD::Lo, dl, PtrVT, TGALo, Hi);
}
SDValue PPCTargetLowering::LowerGlobalAddress(SDValue Op,
SelectionDAG &DAG) const {
EVT PtrVT = Op.getValueType();
@@ -4565,7 +4590,7 @@ SDValue PPCTargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) const {
case ISD::ConstantPool: return LowerConstantPool(Op, DAG);
case ISD::BlockAddress: return LowerBlockAddress(Op, DAG);
case ISD::GlobalAddress: return LowerGlobalAddress(Op, DAG);
case ISD::GlobalTLSAddress: llvm_unreachable("TLS not implemented for PPC");
case ISD::GlobalTLSAddress: return LowerGlobalTLSAddress(Op, DAG);
case ISD::JumpTable: return LowerJumpTable(Op, DAG);
case ISD::SETCC: return LowerSETCC(Op, DAG);
case ISD::INIT_TRAMPOLINE: return LowerINIT_TRAMPOLINE(Op, DAG);