Upgrade our copies of clang and llvm to 3.7.1 release. This is a

bugfix-only release, with no new features.

Please note that from 3.5.0 onwards, clang and llvm require C++11
support to build; see UPDATING for more information.

4 files changed, 22 insertions, 4 deletions

diff --git a/contrib/llvm/lib/CodeGen/AsmPrinter/WinException.cpp b/contrib/llvm/lib/CodeGen/AsmPrinter/WinException.cpp
index 71c7781..a2b9316 100644
--- a/contrib/llvm/lib/CodeGen/AsmPrinter/WinException.cpp
+++ b/contrib/llvm/lib/CodeGen/AsmPrinter/WinException.cpp
@@ -169,7 +169,7 @@ void WinException::endFunction(const MachineFunction *MF) {
     Asm->OutStreamer->PopSection();
   }
 
-  if (shouldEmitMoves)
+  if (shouldEmitMoves || shouldEmitPersonality)
     Asm->OutStreamer->EmitWinCFIEndProc();
 }
 
diff --git a/contrib/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/contrib/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 21ab072..fbc8f1e 100644
--- a/contrib/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/contrib/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -439,7 +439,7 @@ ExpandUnalignedLoad(LoadSDNode *LD, SelectionDAG &DAG,
                              ISD::ANY_EXTEND, dl, VT, Result);
 
       ValResult = Result;
-      ChainResult = Chain;
+      ChainResult = newLoad.getValue(1);
       return;
     }
 
diff --git a/contrib/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp b/contrib/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
index a7392fa..54cfaf5 100644
--- a/contrib/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
+++ b/contrib/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
@@ -1010,6 +1010,8 @@ SDValue DAGTypeLegalizer::GetVectorElementPointer(SDValue VecPtr, EVT EltVT,
 
   // Calculate the element offset and add it to the pointer.
   unsigned EltSize = EltVT.getSizeInBits() / 8; // FIXME: should be ABI size.
+  assert(EltSize * 8 == EltVT.getSizeInBits() &&
+         "Converting bits to bytes lost precision");
 
   Index = DAG.getNode(ISD::MUL, dl, Index.getValueType(), Index,
                       DAG.getConstant(EltSize, dl, Index.getValueType()));
diff --git a/contrib/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp b/contrib/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
index 4348ab7..51cd661 100644
--- a/contrib/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
+++ b/contrib/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
@@ -1528,9 +1528,25 @@ SDValue DAGTypeLegalizer::SplitVecOp_EXTRACT_VECTOR_ELT(SDNode *N) {
   if (CustomLowerNode(N, N->getValueType(0), true))
     return SDValue();
 
-  // Store the vector to the stack.
-  EVT EltVT = VecVT.getVectorElementType();
+  // Make the vector elements byte-addressable if they aren't already.
   SDLoc dl(N);
+  EVT EltVT = VecVT.getVectorElementType();
+  if (EltVT.getSizeInBits() < 8) {
+    SmallVector<SDValue, 4> ElementOps;
+    for (unsigned i = 0; i < VecVT.getVectorNumElements(); ++i) {
+      ElementOps.push_back(DAG.getAnyExtOrTrunc(
+          DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, Vec,
+                      DAG.getConstant(i, dl, MVT::i8)),
+          dl, MVT::i8));
+    }
+
+    EltVT = MVT::i8;
+    VecVT = EVT::getVectorVT(*DAG.getContext(), EltVT,
+                             VecVT.getVectorNumElements());
+    Vec = DAG.getNode(ISD::BUILD_VECTOR, dl, VecVT, ElementOps);
+  }
+
+  // Store the vector to the stack.
   SDValue StackPtr = DAG.CreateStackTemporary(VecVT);
   SDValue Store = DAG.getStore(DAG.getEntryNode(), dl, Vec, StackPtr,
                                MachinePointerInfo(), false, false, 0);