[PowerPC] Support TLS on PPC32/ELF
Patch by Justin Hibbits!
llvm-svn: 213960
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index d596bda..d63fac1 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -1683,47 +1683,61 @@
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 GOTPtr;
+ if (is64bit) {
+ SDValue GOTReg = DAG.getRegister(PPC::X2, MVT::i64);
+ GOTPtr = DAG.getNode(PPCISD::ADDIS_TLSGD_HA, dl, PtrVT,
+ GOTReg, TGA);
+ } else {
+ GOTPtr = DAG.getNode(PPCISD::PPC32_PICGOT, dl, PtrVT);
+ }
SDValue GOTEntry = DAG.getNode(PPCISD::ADDI_TLSGD_L, dl, PtrVT,
- GOTEntryHi, TGA);
+ GOTPtr, 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);
+ Chain = DAG.getCopyToReg(Chain, dl,
+ is64bit ? PPC::X3 : PPC::R3, GOTEntry);
+ SDValue ParmReg = DAG.getRegister(is64bit ? PPC::X3 : PPC::R3,
+ is64bit ? MVT::i64 : MVT::i32);
SDValue TLSAddr = DAG.getNode(PPCISD::GET_TLS_ADDR, dl,
PtrVT, ParmReg, TGA);
// The return value from 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);
+ Chain = DAG.getCopyToReg(Chain, dl, is64bit ? PPC::X3 : PPC::R3, TLSAddr);
+ return DAG.getCopyFromReg(Chain, dl, is64bit ? PPC::X3 : PPC::R3, PtrVT);
}
if (Model == TLSModel::LocalDynamic) {
SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, 0);
- SDValue GOTReg = DAG.getRegister(PPC::X2, MVT::i64);
- SDValue GOTEntryHi = DAG.getNode(PPCISD::ADDIS_TLSLD_HA, dl, PtrVT,
- GOTReg, TGA);
+ SDValue GOTPtr;
+ if (is64bit) {
+ SDValue GOTReg = DAG.getRegister(PPC::X2, MVT::i64);
+ GOTPtr = DAG.getNode(PPCISD::ADDIS_TLSLD_HA, dl, PtrVT,
+ GOTReg, TGA);
+ } else {
+ GOTPtr = DAG.getNode(PPCISD::PPC32_PICGOT, dl, PtrVT);
+ }
SDValue GOTEntry = DAG.getNode(PPCISD::ADDI_TLSLD_L, dl, PtrVT,
- GOTEntryHi, TGA);
+ GOTPtr, 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);
+ Chain = DAG.getCopyToReg(Chain, dl,
+ is64bit ? PPC::X3 : PPC::R3, GOTEntry);
+ SDValue ParmReg = DAG.getRegister(is64bit ? PPC::X3 : PPC::R3,
+ is64bit ? MVT::i64 : MVT::i32);
SDValue TLSAddr = DAG.getNode(PPCISD::GET_TLSLD_ADDR, dl,
PtrVT, ParmReg, TGA);
// The return value from GET_TLSLD_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);
+ Chain = DAG.getCopyToReg(Chain, dl, is64bit ? PPC::X3 : PPC::R3, TLSAddr);
SDValue DtvOffsetHi = DAG.getNode(PPCISD::ADDIS_DTPREL_HA, dl, PtrVT,
Chain, ParmReg, TGA);
return DAG.getNode(PPCISD::ADDI_DTPREL_L, dl, PtrVT, DtvOffsetHi, TGA);