Update LLVM for 3.5 rebase (r209712).

Change-Id: I149556c940fb7dc92d075273c87ff584f400941f
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 20afb3d..a59e895 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -387,9 +387,7 @@
                                        MinAlign(ST->getAlignment(), Offset),
                                        ST->getTBAAInfo()));
     // The order of the stores doesn't matter - say it with a TokenFactor.
-    SDValue Result =
-      DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0],
-                  Stores.size());
+    SDValue Result = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Stores);
     DAGLegalize->ReplaceNode(SDValue(ST, 0), Result);
     return;
   }
@@ -506,8 +504,7 @@
                                        false, false, 0));
 
     // The order of the stores doesn't matter - say it with a TokenFactor.
-    SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0],
-                             Stores.size());
+    SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Stores);
 
     // Finally, perform the original load only redirected to the stack slot.
     Load = DAG.getExtLoad(LD->getExtensionType(), dl, VT, TF, StackBase,
@@ -705,7 +702,7 @@
       }
     }
   }
-  return SDValue(0, 0);
+  return SDValue(nullptr, 0);
 }
 
 void SelectionDAGLegalize::LegalizeStoreOps(SDNode *Node) {
@@ -1268,6 +1265,13 @@
     if (Action == TargetLowering::Legal)
       Action = TargetLowering::Custom;
     break;
+  case ISD::READ_REGISTER:
+  case ISD::WRITE_REGISTER:
+    // Named register is legal in the DAG, but blocked by register name
+    // selection if not implemented by target (to chose the correct register)
+    // They'll be converted to Copy(To/From)Reg.
+    Action = TargetLowering::Legal;
+    break;
   case ISD::DEBUGTRAP:
     Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0));
     if (Action == TargetLowering::Expand) {
@@ -1528,8 +1532,7 @@
 
   SDValue StoreChain;
   if (!Stores.empty())    // Not all undef elements?
-    StoreChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
-                             &Stores[0], Stores.size());
+    StoreChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Stores);
   else
     StoreChain = DAG.getEntryNode();
 
@@ -1649,8 +1652,8 @@
 /// If the SETCC has been legalized using the inverse condcode, then LHS and
 /// RHS will be unchanged, CC will set to the inverted condcode, and NeedInvert
 /// will be set to true. The caller must invert the result of the SETCC with
-/// SelectionDAG::getNOT() or take equivalent action to swap the effect of a
-/// true/false result.
+/// SelectionDAG::getLogicalNOT() or take equivalent action to swap the effect
+/// of a true/false result.
 ///
 /// \returns true if the SetCC has been legalized, false if it hasn't.
 bool SelectionDAGLegalize::LegalizeSetCCCondCode(EVT VT,
@@ -2055,13 +2058,12 @@
   if (isTailCall)
     InChain = TCChain;
 
-  TargetLowering::
-  CallLoweringInfo CLI(InChain, RetTy, isSigned, !isSigned, false, false,
-                    0, TLI.getLibcallCallingConv(LC), isTailCall,
-                    /*doesNotReturn=*/false, /*isReturnValueUsed=*/true,
-                    Callee, Args, DAG, SDLoc(Node));
-  std::pair<SDValue, SDValue> CallInfo = TLI.LowerCallTo(CLI);
+  TargetLowering::CallLoweringInfo CLI(DAG);
+  CLI.setDebugLoc(SDLoc(Node)).setChain(InChain)
+    .setCallee(TLI.getLibcallCallingConv(LC), RetTy, Callee, &Args, 0)
+    .setTailCall(isTailCall).setSExtResult(isSigned).setZExtResult(!isSigned);
 
+  std::pair<SDValue, SDValue> CallInfo = TLI.LowerCallTo(CLI);
 
   if (!CallInfo.second.getNode())
     // It's a tailcall, return the chain (which is the DAG root).
@@ -2090,12 +2092,12 @@
                                          TLI.getPointerTy());
 
   Type *RetTy = RetVT.getTypeForEVT(*DAG.getContext());
-  TargetLowering::
-  CallLoweringInfo CLI(DAG.getEntryNode(), RetTy, isSigned, !isSigned, false,
-                       false, 0, TLI.getLibcallCallingConv(LC),
-                       /*isTailCall=*/false,
-                  /*doesNotReturn=*/false, /*isReturnValueUsed=*/true,
-                  Callee, Args, DAG, dl);
+
+  TargetLowering::CallLoweringInfo CLI(DAG);
+  CLI.setDebugLoc(dl).setChain(DAG.getEntryNode())
+    .setCallee(TLI.getLibcallCallingConv(LC), RetTy, Callee, &Args, 0)
+    .setSExtResult(isSigned).setZExtResult(!isSigned);
+
   std::pair<SDValue,SDValue> CallInfo = TLI.LowerCallTo(CLI);
 
   return CallInfo.first;
@@ -2124,11 +2126,12 @@
                                          TLI.getPointerTy());
 
   Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext());
-  TargetLowering::
-  CallLoweringInfo CLI(InChain, RetTy, isSigned, !isSigned, false, false,
-                    0, TLI.getLibcallCallingConv(LC), /*isTailCall=*/false,
-                    /*doesNotReturn=*/false, /*isReturnValueUsed=*/true,
-                    Callee, Args, DAG, SDLoc(Node));
+
+  TargetLowering::CallLoweringInfo CLI(DAG);
+  CLI.setDebugLoc(SDLoc(Node)).setChain(InChain)
+    .setCallee(TLI.getLibcallCallingConv(LC), RetTy, Callee, &Args, 0)
+    .setSExtResult(isSigned).setZExtResult(!isSigned);
+
   std::pair<SDValue, SDValue> CallInfo = TLI.LowerCallTo(CLI);
 
   return CallInfo;
@@ -2183,7 +2186,7 @@
   case MVT::i128: LC= isSigned ? RTLIB::SDIVREM_I128:RTLIB::UDIVREM_I128; break;
   }
 
-  return TLI.getLibcallName(LC) != 0;
+  return TLI.getLibcallName(LC) != nullptr;
 }
 
 /// useDivRem - Only issue divrem libcall if both quotient and remainder are
@@ -2261,11 +2264,11 @@
                                          TLI.getPointerTy());
 
   SDLoc dl(Node);
-  TargetLowering::
-  CallLoweringInfo CLI(InChain, RetTy, isSigned, !isSigned, false, false,
-                    0, TLI.getLibcallCallingConv(LC), /*isTailCall=*/false,
-                    /*doesNotReturn=*/false, /*isReturnValueUsed=*/true,
-                    Callee, Args, DAG, dl);
+  TargetLowering::CallLoweringInfo CLI(DAG);
+  CLI.setDebugLoc(dl).setChain(InChain)
+    .setCallee(TLI.getLibcallCallingConv(LC), RetTy, Callee, &Args, 0)
+    .setSExtResult(isSigned).setZExtResult(!isSigned);
+
   std::pair<SDValue, SDValue> CallInfo = TLI.LowerCallTo(CLI);
 
   // Remainder is loaded back from the stack frame.
@@ -2286,7 +2289,7 @@
   case MVT::f128:    LC = RTLIB::SINCOS_F128; break;
   case MVT::ppcf128: LC = RTLIB::SINCOS_PPCF128; break;
   }
-  return TLI.getLibcallName(LC) != 0;
+  return TLI.getLibcallName(LC) != nullptr;
 }
 
 /// canCombineSinCosLibcall - Return true if sincos libcall is available and
@@ -2375,12 +2378,11 @@
                                          TLI.getPointerTy());
 
   SDLoc dl(Node);
-  TargetLowering::
-  CallLoweringInfo CLI(InChain, Type::getVoidTy(*DAG.getContext()),
-                       false, false, false, false,
-                       0, TLI.getLibcallCallingConv(LC), /*isTailCall=*/false,
-                       /*doesNotReturn=*/false, /*isReturnValueUsed=*/true,
-                       Callee, Args, DAG, dl);
+  TargetLowering::CallLoweringInfo CLI(DAG);
+  CLI.setDebugLoc(dl).setChain(InChain)
+    .setCallee(TLI.getLibcallCallingConv(LC),
+               Type::getVoidTy(*DAG.getContext()), Callee, &Args, 0);
+
   std::pair<SDValue, SDValue> CallInfo = TLI.LowerCallTo(CLI);
 
   Results.push_back(DAG.getLoad(RetVT, dl, CallInfo.second, SinPtr,
@@ -2990,15 +2992,13 @@
     // If the target didn't lower this, lower it to '__sync_synchronize()' call
     // FIXME: handle "fence singlethread" more efficiently.
     TargetLowering::ArgListTy Args;
-    TargetLowering::
-    CallLoweringInfo CLI(Node->getOperand(0),
-                         Type::getVoidTy(*DAG.getContext()),
-                      false, false, false, false, 0, CallingConv::C,
-                      /*isTailCall=*/false,
-                      /*doesNotReturn=*/false, /*isReturnValueUsed=*/true,
-                      DAG.getExternalSymbol("__sync_synchronize",
-                                            TLI.getPointerTy()),
-                      Args, DAG, dl);
+
+    TargetLowering::CallLoweringInfo CLI(DAG);
+    CLI.setDebugLoc(dl).setChain(Node->getOperand(0))
+      .setCallee(CallingConv::C, Type::getVoidTy(*DAG.getContext()),
+                 DAG.getExternalSymbol("__sync_synchronize", TLI.getPointerTy()),
+                 &Args, 0);
+
     std::pair<SDValue, SDValue> CallResult = TLI.LowerCallTo(CLI);
 
     Results.push_back(CallResult.second);
@@ -3071,14 +3071,10 @@
   case ISD::TRAP: {
     // If this operation is not supported, lower it to 'abort()' call
     TargetLowering::ArgListTy Args;
-    TargetLowering::
-    CallLoweringInfo CLI(Node->getOperand(0),
-                         Type::getVoidTy(*DAG.getContext()),
-                      false, false, false, false, 0, CallingConv::C,
-                      /*isTailCall=*/false,
-                      /*doesNotReturn=*/false, /*isReturnValueUsed=*/true,
-                      DAG.getExternalSymbol("abort", TLI.getPointerTy()),
-                      Args, DAG, dl);
+    TargetLowering::CallLoweringInfo CLI(DAG);
+    CLI.setDebugLoc(dl).setChain(Node->getOperand(0))
+      .setCallee(CallingConv::C, Type::getVoidTy(*DAG.getContext()),
+                 DAG.getExternalSymbol("abort", TLI.getPointerTy()), &Args, 0);
     std::pair<SDValue, SDValue> CallResult = TLI.LowerCallTo(CLI);
 
     Results.push_back(CallResult.second);
@@ -3304,7 +3300,7 @@
                                                   TLI.getVectorIdxTy())));
     }
 
-    Tmp1 = DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &Ops[0], Ops.size());
+    Tmp1 = DAG.getNode(ISD::BUILD_VECTOR, dl, VT, Ops);
     // We may have changed the BUILD_VECTOR type. Cast it back to the Node type.
     Tmp1 = DAG.getNode(ISD::BITCAST, dl, Node->getValueType(0), Tmp1);
     Results.push_back(Tmp1);
@@ -3625,6 +3621,23 @@
                                     Node->getOperand(1)));
       break;
     }
+
+    SDValue Lo, Hi;
+    EVT HalfType = VT.getHalfSizedIntegerVT(*DAG.getContext());
+    if (TLI.isOperationLegalOrCustom(ISD::ZERO_EXTEND, VT) &&
+        TLI.isOperationLegalOrCustom(ISD::ANY_EXTEND, VT) &&
+        TLI.isOperationLegalOrCustom(ISD::SHL, VT) &&
+        TLI.isOperationLegalOrCustom(ISD::OR, VT) &&
+        TLI.expandMUL(Node, Lo, Hi, HalfType, DAG)) {
+      Lo = DAG.getNode(ISD::ZERO_EXTEND, dl, VT, Lo);
+      Hi = DAG.getNode(ISD::ANY_EXTEND, dl, VT, Hi);
+      SDValue Shift = DAG.getConstant(HalfType.getSizeInBits(),
+                                      TLI.getShiftAmountTy(HalfType));
+      Hi = DAG.getNode(ISD::SHL, dl, VT, Hi, Shift);
+      Results.push_back(DAG.getNode(ISD::OR, dl, VT, Lo, Hi));
+      break;
+    }
+
     Tmp1 = ExpandIntLibCall(Node, false,
                             RTLIB::MUL_I8,
                             RTLIB::MUL_I16, RTLIB::MUL_I32,
@@ -3698,8 +3711,7 @@
       BottomHalf = DAG.getNode(Ops[isSigned][1], dl, DAG.getVTList(VT, VT), LHS,
                                RHS);
       TopHalf = BottomHalf.getValue(1);
-    } else if (TLI.isTypeLegal(EVT::getIntegerVT(*DAG.getContext(),
-                                                 VT.getSizeInBits() * 2))) {
+    } else if (TLI.isTypeLegal(WideVT)) {
       LHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, LHS);
       RHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, RHS);
       Tmp1 = DAG.getNode(ISD::MUL, dl, WideVT, LHS, RHS);
@@ -3857,7 +3869,7 @@
       // If we expanded the SETCC by inverting the condition code, then wrap
       // the existing SETCC in a NOT to restore the intended condition.
       if (NeedInvert)
-        Tmp1 = DAG.getNOT(dl, Tmp1, Tmp1->getValueType(0));
+        Tmp1 = DAG.getLogicalNOT(dl, Tmp1, Tmp1->getValueType(0));
 
       Results.push_back(Tmp1);
       break;
@@ -3994,8 +4006,7 @@
                                     VT.getScalarType(), Ex, Sh));
     }
     SDValue Result =
-      DAG.getNode(ISD::BUILD_VECTOR, dl, Node->getValueType(0),
-                  &Scalars[0], Scalars.size());
+      DAG.getNode(ISD::BUILD_VECTOR, dl, Node->getValueType(0), Scalars);
     ReplaceNode(SDValue(Node, 0), Result);
     break;
   }