Merging llvm patches from hpvm-epochs0-backend

hpvm/llvm_patches/apply_patch.sh

hpvm/llvm_patches/construct_patch.sh

hpvm/llvm_patches/include/llvm/ADT/DirectedGraph.h

hpvm/llvm_patches/include/llvm/ADT/EnumeratedArray.h

hpvm/llvm_patches/include/llvm/Analysis/DDG.h

...vm_patches/include/llvm/Analysis/DependenceGraphBuilder.h

hpvm/llvm_patches/include/llvm/Bitcode/LLVMBitCodes.h

hpvm/llvm_patches/include/llvm/IR/Attributes.h

hpvm/llvm_patches/include/llvm/IR/Attributes.td

hpvm/llvm_patches/include/llvm/IR/Intrinsics.td

hpvm/llvm_patches/include/llvm/IR/IntrinsicsHPVM.td

hpvm/llvm_patches/include/llvm/Support/Debug.h

hpvm/llvm_patches/include/llvm/Transforms/Scalar/ADCE.h

hpvm/llvm_patches/include/llvm/Transforms/Scalar/EarlyCSE.h

...llvm_patches/include/llvm/Transforms/Scalar/SimplifyCFG.h

...llvm_patches/include/llvm/Transforms/Utils/LoopSimplify.h

hpvm/llvm_patches/lib/Analysis/CMakeLists.txt

hpvm/llvm_patches/lib/Analysis/DDG.cpp

hpvm/llvm_patches/lib/Analysis/DependenceGraphBuilder.cpp

hpvm/llvm_patches/lib/AsmParser/LLLexer.cpp