Delete unused method.

[oota-llvm.git] / lib / CodeGen / SelectionDAG / SelectionDAGBuilder.cpp

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 1fa5bf1114eabfd9f24160d550321b527f231e3e..e264cd9ae4ab93c82ef6dfcbd652bf95ebc1b724 100644 (file)
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -1244,7 +1244,7 @@ void SelectionDAGBuilder::visitRet(const ReturnInst &I) {
           ExtendKind = ISD::ZERO_EXTEND;
 
         if (ExtendKind != ISD::ANY_EXTEND && VT.isInteger())
-          VT = TLI->getTypeForExtArgOrReturn(VT.getSimpleVT(), ExtendKind);
+          VT = TLI->getTypeForExtArgOrReturn(*DAG.getContext(), VT, ExtendKind);
 
         unsigned NumParts = TLI->getNumRegisters(*DAG.getContext(), VT);
         MVT PartVT = TLI->getRegisterType(*DAG.getContext(), VT);
@@ -1814,12 +1814,14 @@ void SelectionDAGBuilder::visitSPDescriptorParent(StackProtectorDescriptor &SPD,
 
   SDValue Guard;
 
-  // If useLoadStackGuardNode returns true, retrieve the guard value from
-  // the virtual register holding the value. Otherwise, emit a volatile load
-  // to retrieve the stack guard value.
-  if (TLI->useLoadStackGuardNode())
-    Guard = DAG.getCopyFromReg(DAG.getEntryNode(), getCurSDLoc(),
-                               SPD.getGuardReg(), PtrTy);
+  // If GuardReg is set and useLoadStackGuardNode returns true, retrieve the
+  // guard value from the virtual register holding the value. Otherwise, emit a
+  // volatile load to retrieve the stack guard value.
+  unsigned GuardReg = SPD.getGuardReg();
+
+  if (GuardReg && TLI->useLoadStackGuardNode())
+    Guard = DAG.getCopyFromReg(DAG.getEntryNode(), getCurSDLoc(), GuardReg,
+                               PtrTy);
   else
     Guard = DAG.getLoad(PtrTy, getCurSDLoc(), DAG.getEntryNode(),
                         GuardPtr, MachinePointerInfo(IRGuard, 0),
@@ -2228,8 +2230,9 @@ bool SelectionDAGBuilder::handleSmallSwitchRange(CaseRec& CR,
 }
 
 static inline bool areJTsAllowed(const TargetLowering &TLI) {
-  return TLI.isOperationLegalOrCustom(ISD::BR_JT, MVT::Other) ||
-         TLI.isOperationLegalOrCustom(ISD::BRIND, MVT::Other);
+  return TLI.supportJumpTables() &&
+          (TLI.isOperationLegalOrCustom(ISD::BR_JT, MVT::Other) ||
+           TLI.isOperationLegalOrCustom(ISD::BRIND, MVT::Other));
 }
 
 static APInt ComputeRange(const APInt &First, const APInt &Last) {
@@ -3865,7 +3868,7 @@ void SelectionDAGBuilder::visitTargetIntrinsic(const CallInst &I,
                                      VTs, Ops, Info.memVT,
                                    MachinePointerInfo(Info.ptrVal, Info.offset),
                                      Info.align, Info.vol,
-                                     Info.readMem, Info.writeMem);
+                                     Info.readMem, Info.writeMem, Info.size);
   } else if (!HasChain) {
     Result = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, getCurSDLoc(), VTs, Ops);
   } else if (!I.getType()->isVoidTy()) {
@@ -5262,13 +5265,21 @@ SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I, unsigned Intrinsic) {
     MachineFrameInfo *MFI = MF.getFrameInfo();
     EVT PtrTy = TLI->getPointerTy();
     SDValue Src, Chain = getRoot();
+    const Value *Ptr = cast<LoadInst>(I.getArgOperand(0))->getPointerOperand();
+    const GlobalVariable *GV = dyn_cast<GlobalVariable>(Ptr);
+
+    // See if Ptr is a bitcast. If it is, look through it and see if we can get
+    // global variable __stack_chk_guard.
+    if (!GV)
+      if (const Operator *BC = dyn_cast<Operator>(Ptr))
+        if (BC->getOpcode() == Instruction::BitCast)
+          GV = dyn_cast<GlobalVariable>(BC->getOperand(0));
 
-    if (TLI->useLoadStackGuardNode()) {
+    if (GV && TLI->useLoadStackGuardNode()) {
       // Emit a LOAD_STACK_GUARD node.
       MachineSDNode *Node = DAG.getMachineNode(TargetOpcode::LOAD_STACK_GUARD,
                                                sdl, PtrTy, Chain);
-      LoadInst *LI = cast<LoadInst>(I.getArgOperand(0));
-      MachinePointerInfo MPInfo(LI->getPointerOperand());
+      MachinePointerInfo MPInfo(GV);
       MachineInstr::mmo_iterator MemRefs = MF.allocateMemRefsArray(1);
       unsigned Flags = MachineMemOperand::MOLoad |
                        MachineMemOperand::MOInvariant;