Honour setHasCalls() set from isel.

This is used in some weird cases like general dynamic TLS model.
This fixes PR5723

llvm-svn: 91144

2 files changed, 7 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/PrologEpilogInserter.cpp b/llvm/lib/CodeGen/PrologEpilogInserter.cpp
index 4d9f9f8ccd2..e94247f3714 100644
--- a/llvm/lib/CodeGen/PrologEpilogInserter.cpp
+++ b/llvm/lib/CodeGen/PrologEpilogInserter.cpp
@@ -136,9 +136,10 @@ void PEI::getAnalysisUsage(AnalysisUsage &AU) const {
 /// pseudo instructions.
 void PEI::calculateCallsInformation(MachineFunction &Fn) {
   const TargetRegisterInfo *RegInfo = Fn.getTarget().getRegisterInfo();
+  MachineFrameInfo *FFI = Fn.getFrameInfo();
 
   unsigned MaxCallFrameSize = 0;
-  bool HasCalls = false;
+  bool HasCalls = FFI->hasCalls();
 
   // Get the function call frame set-up and tear-down instruction opcode
   int FrameSetupOpcode   = RegInfo->getCallFrameSetupOpcode();
@@ -166,7 +167,6 @@ void PEI::calculateCallsInformation(MachineFunction &Fn) {
         HasCalls = true;
       }
 
-  MachineFrameInfo *FFI = Fn.getFrameInfo();
   FFI->setHasCalls(HasCalls);
   FFI->setMaxCallFrameSize(MaxCallFrameSize);
 
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 8284b17272d..7ebf8fd4cc7 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -4902,6 +4902,7 @@ static SDValue
 GetTLSADDR(SelectionDAG &DAG, SDValue Chain, GlobalAddressSDNode *GA,
            SDValue *InFlag, const EVT PtrVT, unsigned ReturnReg,
            unsigned char OperandFlags) {
+  MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
   SDVTList NodeTys = DAG.getVTList(MVT::Other, MVT::Flag);
   DebugLoc dl = GA->getDebugLoc();
   SDValue TGA = DAG.getTargetGlobalAddress(GA->getGlobal(),
@@ -4915,6 +4916,10 @@ GetTLSADDR(SelectionDAG &DAG, SDValue Chain, GlobalAddressSDNode *GA,
     SDValue Ops[]  = { Chain, TGA };
     Chain = DAG.getNode(X86ISD::TLSADDR, dl, NodeTys, Ops, 2);
   }
+
+  // TLSADDR will be codegen'ed as call. Inform MFI that function has calls.
+  MFI->setHasCalls(true);
+
   SDValue Flag = Chain.getValue(1);
   return DAG.getCopyFromReg(Chain, dl, ReturnReg, PtrVT, Flag);
 }