diff options
Diffstat (limited to 'lib/Target/PowerPC/PPCISelLowering.cpp')
| -rw-r--r-- | lib/Target/PowerPC/PPCISelLowering.cpp | 51 |
1 files changed, 39 insertions, 12 deletions
diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp index 1168171b23..51f2192371 100644 --- a/lib/Target/PowerPC/PPCISelLowering.cpp +++ b/lib/Target/PowerPC/PPCISelLowering.cpp @@ -580,6 +580,9 @@ const char *PPCTargetLowering::getTargetNodeName(unsigned Opcode) const { case PPCISD::ADDI_TOC_L: return "PPCISD::ADDI_TOC_L"; case PPCISD::LD_GOT_TPREL: return "PPCISD::LD_GOT_TPREL"; case PPCISD::ADD_TLS: return "PPCISD::ADD_TLS"; + case PPCISD::ADDIS_TLSGD_HA: return "PPCISD::ADDIS_TLSGD_HA"; + case PPCISD::ADDI_TLSGD_L: return "PPCISD::ADDI_TLSGD_L"; + case PPCISD::GET_TLS_ADDR: return "PPCISD::GET_TLS_ADDR"; } } @@ -1342,18 +1345,42 @@ SDValue PPCTargetLowering::LowerGlobalTLSAddress(SDValue Op, if (!is64bit) llvm_unreachable("only local-exec is currently supported for ppc32"); - if (Model != TLSModel::InitialExec) - llvm_unreachable("only local-exec and initial-exec TLS modes supported"); - - SDValue GOTOffset = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, - PPCII::MO_GOT_TPREL16_DS); - SDValue TPReg = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, - PPCII::MO_TLS); - SDValue GOTReg = DAG.getRegister(is64bit ? PPC::X2 : PPC::R2, - is64bit ? MVT::i64 : MVT::i32); - SDValue TPOffset = DAG.getNode(PPCISD::LD_GOT_TPREL, dl, PtrVT, - GOTOffset, GOTReg); - return DAG.getNode(PPCISD::ADD_TLS, dl, PtrVT, TPOffset, TPReg); + if (Model == TLSModel::InitialExec) { + SDValue GOTOffset = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, + PPCII::MO_GOT_TPREL16_DS); + SDValue TPReg = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, + PPCII::MO_TLS); + SDValue GOTReg = DAG.getRegister(is64bit ? PPC::X2 : PPC::R2, + is64bit ? MVT::i64 : MVT::i32); + SDValue TPOffset = DAG.getNode(PPCISD::LD_GOT_TPREL, dl, PtrVT, + GOTOffset, GOTReg); + return DAG.getNode(PPCISD::ADD_TLS, dl, PtrVT, TPOffset, TPReg); + } + + if (Model == TLSModel::GeneralDynamic) { + SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, 0); + SDValue GOTReg = DAG.getRegister(PPC::X2, MVT::i64); + SDValue GOTEntryHi = DAG.getNode(PPCISD::ADDIS_TLSGD_HA, dl, PtrVT, + GOTReg, TGA); + SDValue GOTEntry = DAG.getNode(PPCISD::ADDI_TLSGD_L, dl, PtrVT, + GOTEntryHi, TGA); + + // We need a chain node, and don't have one handy. The underlying + // call has no side effects, so using the function entry node + // suffices. + SDValue Chain = DAG.getEntryNode(); + Chain = DAG.getCopyToReg(Chain, dl, PPC::X3, GOTEntry); + SDValue ParmReg = DAG.getRegister(PPC::X3, MVT::i64); + SDValue TLSAddr = DAG.getNode(PPCISD::GET_TLS_ADDR, dl, + PtrVT, ParmReg, TGA); + // The call to GET_TLS_ADDR really is in X3 already, but + // some hacks are needed here to tie everything together. + // The extra copies dissolve during subsequent transforms. + Chain = DAG.getCopyToReg(Chain, dl, PPC::X3, TLSAddr); + return DAG.getCopyFromReg(Chain, dl, PPC::X3, PtrVT); + } + + llvm_unreachable("local-dynamic TLS mode is not yet supported"); } SDValue PPCTargetLowering::LowerGlobalAddress(SDValue Op, |