X86-64 TLS support for local exec and initial exec.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68947 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index ff8382a..825e31d 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -4831,12 +4831,14 @@
// Lower ISD::GlobalTLSAddress using the "initial exec" (for no-pic) or
// "local exec" model.
static SDValue LowerToTLSExecModel(GlobalAddressSDNode *GA, SelectionDAG &DAG,
- const MVT PtrVT, TLSModel::Model model) {
+ const MVT PtrVT, TLSModel::Model model,
+ bool is64Bit) {
DebugLoc dl = GA->getDebugLoc();
// Get the Thread Pointer
SDValue Base = DAG.getNode(X86ISD::SegmentBaseAddress,
DebugLoc::getUnknownLoc(), PtrVT,
- DAG.getRegister(X86::GS, MVT::i32));
+ DAG.getRegister(is64Bit? X86::FS : X86::GS,
+ MVT::i32));
SDValue ThreadPointer = DAG.getLoad(PtrVT, dl, DAG.getEntryNode(), Base,
NULL, 0);
@@ -4871,9 +4873,11 @@
switch (model) {
case TLSModel::GeneralDynamic:
case TLSModel::LocalDynamic: // not implemented
- case TLSModel::InitialExec: // not implemented
- case TLSModel::LocalExec: // not implemented
return LowerToTLSGeneralDynamicModel64(GA, DAG, getPointerTy());
+
+ case TLSModel::InitialExec:
+ case TLSModel::LocalExec:
+ return LowerToTLSExecModel(GA, DAG, getPointerTy(), model, true);
}
} else {
switch (model) {
@@ -4883,7 +4887,7 @@
case TLSModel::InitialExec:
case TLSModel::LocalExec:
- return LowerToTLSExecModel(GA, DAG, getPointerTy(), model);
+ return LowerToTLSExecModel(GA, DAG, getPointerTy(), model, false);
}
}
assert(0 && "Unreachable");