Upgrade our copy of clang and llvm to 3.5.1 release. This is a bugfix

only release, no new features have been added.

Please note that this version requires C++11 support to build; see
UPDATING for more information.

Release notes for llvm and clang can be found here:
<http://llvm.org/releases/3.5.1/docs/ReleaseNotes.html>
<http://llvm.org/releases/3.5.1/tools/clang/docs/ReleaseNotes.html>

MFC after:	1 month
X-MFC-With:	276479

1 files changed, 8 insertions, 2 deletions

diff --git a/contrib/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/contrib/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index c1e8df9..79fcb09 100644
--- a/contrib/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/contrib/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -3357,7 +3357,7 @@ void InnerLoopVectorizer::updateAnalysis() {
   DT->addNewBlock(LoopMiddleBlock, LoopBypassBlocks[1]);
   DT->addNewBlock(LoopScalarPreHeader, LoopBypassBlocks[0]);
   DT->changeImmediateDominator(LoopScalarBody, LoopScalarPreHeader);
-  DT->changeImmediateDominator(LoopExitBlock, LoopMiddleBlock);
+  DT->changeImmediateDominator(LoopExitBlock, LoopBypassBlocks[0]);
 
   DEBUG(DT->verifyDomTree());
 }
@@ -5201,7 +5201,13 @@ LoopVectorizationLegality::isInductionVariable(PHINode *Phi) {
     return IK_NoInduction;
 
   assert(PhiTy->isPointerTy() && "The PHI must be a pointer");
-  uint64_t Size = DL->getTypeAllocSize(PhiTy->getPointerElementType());
+  Type *PointerElementType = PhiTy->getPointerElementType();
+  // The pointer stride cannot be determined if the pointer element type is not
+  // sized.
+  if (!PointerElementType->isSized())
+    return IK_NoInduction;
+
+  uint64_t Size = DL->getTypeAllocSize(PointerElementType);
   if (C->getValue()->equalsInt(Size))
     return IK_PtrInduction;
   else if (C->getValue()->equalsInt(0 - Size))