Revert r129235 pending a vetting of the EH rewrite.

--- Reverse-merging r129235 into '.':
D    test/Feature/bb_attrs.ll
U    include/llvm/BasicBlock.h
U    include/llvm/Bitcode/LLVMBitCodes.h
U    lib/VMCore/AsmWriter.cpp
U    lib/VMCore/BasicBlock.cpp
U    lib/AsmParser/LLParser.cpp
U    lib/AsmParser/LLLexer.cpp
U    lib/AsmParser/LLToken.h
U    lib/Bitcode/Reader/BitcodeReader.cpp
U    lib/Bitcode/Writer/BitcodeWriter.cpp



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129259 91177308-0d34-0410-b5e6-96231b3b80d8

lib/VMCore/BasicBlock.cpp

@@ -38,10 +38,10 @@ LLVMContext &BasicBlock::getContext() const {
 // are not in the public header file...
 template class llvm::SymbolTableListTraits<Instruction, BasicBlock>;
 
+
 BasicBlock::BasicBlock(LLVMContext &C, const Twine &Name, Function *NewParent,
                        BasicBlock *InsertBefore)
-  : Value(Type::getLabelTy(C), Value::BasicBlockVal), Parent(0),
-    IsLandingPad(false) {
+  : Value(Type::getLabelTy(C), Value::BasicBlockVal), Parent(0) {
 
   // Make sure that we get added to a function
   LeakDetector::addGarbageObject(this);
@@ -57,6 +57,7 @@ BasicBlock::BasicBlock(LLVMContext &C, const Twine &Name, Function *NewParent,
   setName(Name);
 }
 
+
 BasicBlock::~BasicBlock() {
   // If the address of the block is taken and it is being deleted (e.g. because
   // it is dead), this means that there is either a dangling constant expr