Update llvm/clang to trunk r126547.

There are several bugfixes in this update, but the most important one is
to ensure __start_ and __stop_ symbols for linker sets and kernel module
metadata are always emitted in object files:

  http://llvm.org/bugs/show_bug.cgi?id=9292

Before this fix, if you compiled kernel modules with clang, they would
not be properly processed by kldxref, and if they had any dependencies,
the kernel would fail to load those.  Another problem occurred when
attempting to mount a tmpfs filesystem, which would result in 'operation
not supported by device'.

1 files changed, 29 insertions, 20 deletions

diff --git a/contrib/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/contrib/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 49c862c..f08528f 100644
--- a/contrib/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/contrib/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -87,7 +87,7 @@ class SelectionDAGLegalize {
     // If someone requests legalization of the new node, return itself.
     if (From != To)
       LegalizedNodes.insert(std::make_pair(To, To));
-    
+
     // Transfer SDDbgValues.
     DAG.TransferDbgValues(From, To);
   }
@@ -498,7 +498,8 @@ SDValue ExpandUnalignedStore(StoreSDNode *ST, SelectionDAG &DAG,
   int IncrementSize = NumBits / 8;
 
   // Divide the stored value in two parts.
-  SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy());
+  SDValue ShiftAmount = DAG.getConstant(NumBits,
+                                      TLI.getShiftAmountTy(Val.getValueType()));
   SDValue Lo = Val;
   SDValue Hi = DAG.getNode(ISD::SRL, dl, VT, Val, ShiftAmount);
 
@@ -645,7 +646,8 @@ SDValue ExpandUnalignedLoad(LoadSDNode *LD, SelectionDAG &DAG,
   }
 
   // aggregate the two parts
-  SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy());
+  SDValue ShiftAmount = DAG.getConstant(NumBits,
+                                       TLI.getShiftAmountTy(Hi.getValueType()));
   SDValue Result = DAG.getNode(ISD::SHL, dl, VT, Hi, ShiftAmount);
   Result = DAG.getNode(ISD::OR, dl, VT, Result, Lo);
 
@@ -1264,7 +1266,8 @@ SDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) {
 
         // Move the top bits to the right place.
         Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi,
-                         DAG.getConstant(RoundWidth, TLI.getShiftAmountTy()));
+                         DAG.getConstant(RoundWidth,
+                                      TLI.getShiftAmountTy(Hi.getValueType())));
 
         // Join the hi and lo parts.
         Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi);
@@ -1293,7 +1296,8 @@ SDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) {
 
         // Move the top bits to the right place.
         Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi,
-                         DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy()));
+                         DAG.getConstant(ExtraWidth,
+                                      TLI.getShiftAmountTy(Hi.getValueType())));
 
         // Join the hi and lo parts.
         Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi);
@@ -1482,7 +1486,8 @@ SDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) {
           Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2,
                              DAG.getIntPtrConstant(IncrementSize));
           Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3,
-                           DAG.getConstant(RoundWidth, TLI.getShiftAmountTy()));
+                           DAG.getConstant(RoundWidth,
+                                    TLI.getShiftAmountTy(Tmp3.getValueType())));
           Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2,
                              ST->getPointerInfo().getWithOffset(IncrementSize),
                                  ExtraVT, isVolatile, isNonTemporal,
@@ -1492,7 +1497,8 @@ SDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) {
           // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 (srl X, 8), TRUNCSTORE@+2:i8 X
           // Store the top RoundWidth bits.
           Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3,
-                           DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy()));
+                           DAG.getConstant(ExtraWidth,
+                                    TLI.getShiftAmountTy(Tmp3.getValueType())));
           Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getPointerInfo(),
                                  RoundVT, isVolatile, isNonTemporal, Alignment);
 
@@ -1727,7 +1733,8 @@ SDValue SelectionDAGLegalize::ExpandFCOPYSIGN(SDNode* Node) {
       assert(BitShift < LoadTy.getSizeInBits() && "Pointer advanced wrong?");
       if (BitShift)
         SignBit = DAG.getNode(ISD::SHL, dl, LoadTy, SignBit,
-                              DAG.getConstant(BitShift,TLI.getShiftAmountTy()));
+                              DAG.getConstant(BitShift,
+                                 TLI.getShiftAmountTy(SignBit.getValueType())));
     }
   }
   // Now get the sign bit proper, by seeing whether the value is negative.
@@ -2207,7 +2214,8 @@ SDValue SelectionDAGLegalize::ExpandLegalINT_TO_FP(bool isSigned,
     if (!isSigned) {
       SDValue Fast = DAG.getNode(ISD::SINT_TO_FP, dl, MVT::f32, Op0);
 
-      SDValue ShiftConst = DAG.getConstant(1, TLI.getShiftAmountTy());
+      SDValue ShiftConst =
+          DAG.getConstant(1, TLI.getShiftAmountTy(Op0.getValueType()));
       SDValue Shr = DAG.getNode(ISD::SRL, dl, MVT::i64, Op0, ShiftConst);
       SDValue AndConst = DAG.getConstant(1, MVT::i64);
       SDValue And = DAG.getNode(ISD::AND, dl, MVT::i64, Op0, AndConst);
@@ -2226,7 +2234,6 @@ SDValue SelectionDAGLegalize::ExpandLegalINT_TO_FP(bool isSigned,
     }
 
     // Otherwise, implement the fully general conversion.
-    EVT SHVT = TLI.getShiftAmountTy();
 
     SDValue And = DAG.getNode(ISD::AND, dl, MVT::i64, Op0,
          DAG.getConstant(UINT64_C(0xfffffffffffff800), MVT::i64));
@@ -2241,6 +2248,7 @@ SDValue SelectionDAGLegalize::ExpandLegalINT_TO_FP(bool isSigned,
                    Op0, DAG.getConstant(UINT64_C(0x0020000000000000), MVT::i64),
                    ISD::SETUGE);
     SDValue Sel2 = DAG.getNode(ISD::SELECT, dl, MVT::i64, Ge, Sel, Op0);
+    EVT SHVT = TLI.getShiftAmountTy(Sel2.getValueType());
 
     SDValue Sh = DAG.getNode(ISD::SRL, dl, MVT::i64, Sel2,
                              DAG.getConstant(32, SHVT));
@@ -2387,7 +2395,7 @@ SDValue SelectionDAGLegalize::PromoteLegalFP_TO_INT(SDValue LegalOp,
 ///
 SDValue SelectionDAGLegalize::ExpandBSWAP(SDValue Op, DebugLoc dl) {
   EVT VT = Op.getValueType();
-  EVT SHVT = TLI.getShiftAmountTy();
+  EVT SHVT = TLI.getShiftAmountTy(VT);
   SDValue Tmp1, Tmp2, Tmp3, Tmp4, Tmp5, Tmp6, Tmp7, Tmp8;
   switch (VT.getSimpleVT().SimpleTy) {
   default: assert(0 && "Unhandled Expand type in BSWAP!");
@@ -2450,7 +2458,7 @@ SDValue SelectionDAGLegalize::ExpandBitCount(unsigned Opc, SDValue Op,
   default: assert(0 && "Cannot expand this yet!");
   case ISD::CTPOP: {
     EVT VT = Op.getValueType();
-    EVT ShVT = TLI.getShiftAmountTy();
+    EVT ShVT = TLI.getShiftAmountTy(VT);
     unsigned Len = VT.getSizeInBits();
 
     assert(VT.isInteger() && Len <= 128 && Len % 8 == 0 &&
@@ -2487,7 +2495,7 @@ SDValue SelectionDAGLegalize::ExpandBitCount(unsigned Opc, SDValue Op,
     Op = DAG.getNode(ISD::SRL, dl, VT,
                      DAG.getNode(ISD::MUL, dl, VT, Op, Mask01),
                      DAG.getConstant(Len - 8, ShVT));
-    
+
     return Op;
   }
   case ISD::CTLZ: {
@@ -2501,7 +2509,7 @@ SDValue SelectionDAGLegalize::ExpandBitCount(unsigned Opc, SDValue Op,
     //
     // but see also: http://www.hackersdelight.org/HDcode/nlz.cc
     EVT VT = Op.getValueType();
-    EVT ShVT = TLI.getShiftAmountTy();
+    EVT ShVT = TLI.getShiftAmountTy(VT);
     unsigned len = VT.getSizeInBits();
     for (unsigned i = 0; (1U << i) <= (len / 2); ++i) {
       SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT);
@@ -2737,7 +2745,7 @@ void SelectionDAGLegalize::ExpandNode(SDNode *Node,
     // SAR.  However, it is doubtful that any exist.
     EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT();
     EVT VT = Node->getValueType(0);
-    EVT ShiftAmountTy = TLI.getShiftAmountTy();
+    EVT ShiftAmountTy = TLI.getShiftAmountTy(VT);
     if (VT.isVector())
       ShiftAmountTy = VT;
     unsigned BitsDiff = VT.getScalarType().getSizeInBits() -
@@ -2901,7 +2909,7 @@ void SelectionDAGLegalize::ExpandNode(SDNode *Node,
       // 1 -> Hi
       Tmp1 = DAG.getNode(ISD::SRL, dl, OpTy, Node->getOperand(0),
                          DAG.getConstant(OpTy.getSizeInBits()/2,
-                                         TLI.getShiftAmountTy()));
+                    TLI.getShiftAmountTy(Node->getOperand(0).getValueType())));
       Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), Tmp1);
     } else {
       // 0 -> Lo
@@ -3260,7 +3268,7 @@ void SelectionDAGLegalize::ExpandNode(SDNode *Node,
       assert(LC != RTLIB::UNKNOWN_LIBCALL && "Cannot expand this operation!");
       LHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, LHS);
       RHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, RHS);
-      
+
       SDValue Ret = ExpandLibCall(LC, Node, isSigned);
       BottomHalf = DAG.getNode(ISD::TRUNCATE, dl, VT, Ret);
       TopHalf = DAG.getNode(ISD::SRL, dl, Ret.getValueType(), Ret,
@@ -3268,7 +3276,8 @@ void SelectionDAGLegalize::ExpandNode(SDNode *Node,
       TopHalf = DAG.getNode(ISD::TRUNCATE, dl, VT, TopHalf);
     }
     if (isSigned) {
-      Tmp1 = DAG.getConstant(VT.getSizeInBits() - 1, TLI.getShiftAmountTy());
+      Tmp1 = DAG.getConstant(VT.getSizeInBits() - 1,
+                             TLI.getShiftAmountTy(BottomHalf.getValueType()));
       Tmp1 = DAG.getNode(ISD::SRA, dl, VT, BottomHalf, Tmp1);
       TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, Tmp1,
                              ISD::SETNE);
@@ -3286,7 +3295,7 @@ void SelectionDAGLegalize::ExpandNode(SDNode *Node,
     Tmp2 = DAG.getNode(ISD::ANY_EXTEND, dl, PairTy, Node->getOperand(1));
     Tmp2 = DAG.getNode(ISD::SHL, dl, PairTy, Tmp2,
                        DAG.getConstant(PairTy.getSizeInBits()/2,
-                                       TLI.getShiftAmountTy()));
+                                       TLI.getShiftAmountTy(PairTy)));
     Results.push_back(DAG.getNode(ISD::OR, dl, PairTy, Tmp1, Tmp2));
     break;
   }
@@ -3464,7 +3473,7 @@ void SelectionDAGLegalize::PromoteNode(SDNode *Node,
     Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0));
     Tmp1 = DAG.getNode(ISD::BSWAP, dl, NVT, Tmp1);
     Tmp1 = DAG.getNode(ISD::SRL, dl, NVT, Tmp1,
-                          DAG.getConstant(DiffBits, TLI.getShiftAmountTy()));
+                          DAG.getConstant(DiffBits, TLI.getShiftAmountTy(NVT)));
     Results.push_back(Tmp1);
     break;
   }