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Make ARM and Mips use TargetMachine::getTLSModel()

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This moves the logic for selecting a TLS model to a single place,
instead of the previous three (ARM, Mips, and X86 which already
uses this function).

llvm-svn: 156162
This commit is contained in:
Hans Wennborg 2012-05-04 09:40:39 +00:00
parent 88bf1f4404
commit b3c41d012d
3 changed files with 23 additions and 12 deletions
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23
lib/Target/ARM/ARMISelLowering.cpp
View File

@ -2108,7 +2108,8 @@ ARMTargetLowering::LowerToTLSGeneralDynamicModel(GlobalAddressSDNode *GA,
// "local exec" model.
SDValue
ARMTargetLowering::LowerToTLSExecModels(GlobalAddressSDNode *GA,
SelectionDAG &DAG) const {
SelectionDAG &DAG,
TLSModel::Model model) const {
const GlobalValue *GV = GA->getGlobal();
DebugLoc dl = GA->getDebugLoc();
SDValue Offset;
@ -2117,7 +2118,7 @@ ARMTargetLowering::LowerToTLSExecModels(GlobalAddressSDNode *GA,
// Get the Thread Pointer
SDValue ThreadPointer = DAG.getNode(ARMISD::THREAD_POINTER, dl, PtrVT);
if (GV->isDeclaration()) {
if (model == TLSModel::InitialExec) {
MachineFunction &MF = DAG.getMachineFunction();
ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>();
unsigned ARMPCLabelIndex = AFI->createPICLabelUId();
@ -2142,6 +2143,7 @@ ARMTargetLowering::LowerToTLSExecModels(GlobalAddressSDNode *GA,
false, false, false, 0);
} else {
// local exec model
assert(model == TLSModel::LocalExec);
ARMConstantPoolValue *CPV =
ARMConstantPoolConstant::Create(GV, ARMCP::TPOFF);
Offset = DAG.getTargetConstantPool(CPV, PtrVT, 4);
@ -2162,12 +2164,17 @@ ARMTargetLowering::LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const {
assert(Subtarget->isTargetELF() &&
"TLS not implemented for non-ELF targets");
GlobalAddressSDNode *GA = cast<GlobalAddressSDNode>(Op);
// If the relocation model is PIC, use the "General Dynamic" TLS Model,
// otherwise use the "Local Exec" TLS Model
if (getTargetMachine().getRelocationModel() == Reloc::PIC_)
return LowerToTLSGeneralDynamicModel(GA, DAG);
else
return LowerToTLSExecModels(GA, DAG);
TLSModel::Model model = getTargetMachine().getTLSModel(GA->getGlobal());
switch (model) {
case TLSModel::GeneralDynamic:
case TLSModel::LocalDynamic:
return LowerToTLSGeneralDynamicModel(GA, DAG);
case TLSModel::InitialExec:
case TLSModel::LocalExec:
return LowerToTLSExecModels(GA, DAG, model);
}
}
SDValue ARMTargetLowering::LowerGlobalAddressELF(SDValue Op,

3
lib/Target/ARM/ARMISelLowering.h
View File

@ -422,7 +422,8 @@ namespace llvm {
SDValue LowerToTLSGeneralDynamicModel(GlobalAddressSDNode *GA,
SelectionDAG &DAG) const;
SDValue LowerToTLSExecModels(GlobalAddressSDNode *GA,
SelectionDAG &DAG) const;
SelectionDAG &DAG,
TLSModel::Model model) const;
SDValue LowerGLOBAL_OFFSET_TABLE(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerBR_JT(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerSELECT(SDValue Op, SelectionDAG &DAG) const;

9
lib/Target/Mips/MipsISelLowering.cpp
View File

@ -1614,7 +1614,9 @@ LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const
const GlobalValue *GV = GA->getGlobal();
EVT PtrVT = getPointerTy();
if (getTargetMachine().getRelocationModel() == Reloc::PIC_) {
TLSModel::Model model = getTargetMachine().getTLSModel(GV);
if (model == TLSModel::GeneralDynamic || model == TLSModel::LocalDynamic) {
// General Dynamic TLS Model
bool LocalDynamic = GV->hasInternalLinkage();
unsigned Flag = LocalDynamic ? MipsII::MO_TLSLDM :MipsII::MO_TLSGD;
@ -1641,7 +1643,7 @@ LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const
SDValue Ret = CallResult.first;
if (!LocalDynamic)
if (model != TLSModel::LocalDynamic)
return Ret;
SDValue TGAHi = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,
@ -1655,7 +1657,7 @@ LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const
}
SDValue Offset;
if (GV->isDeclaration()) {
if (model == TLSModel::InitialExec) {
// Initial Exec TLS Model
SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,
MipsII::MO_GOTTPREL);
@ -1666,6 +1668,7 @@ LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const
false, false, false, 0);
} else {
// Local Exec TLS Model
assert(model == TLSModel::LocalExec);
SDValue TGAHi = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,
MipsII::MO_TPREL_HI);
SDValue TGALo = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,