(1) Added Timers in DFG2LLVM_NVPTX pass

llvm/include/llvm/IR/IntrinsicsVISC.td

llvm/lib/Transforms/BuildDFG/Makefile

llvm/lib/Transforms/ClearDFG/Makefile

llvm/lib/Transforms/DFG2LLVM_NVPTX/DFG2LLVM_NVPTX.cpp

llvm/lib/Transforms/DFG2LLVM_NVPTX/Makefile

llvm/lib/Transforms/DFG2LLVM_X86/DFG2LLVM_X86.cpp

llvm/lib/Transforms/DFG2LLVM_X86/Makefile

llvm/lib/Transforms/GenVISC/GenVISC.cpp

llvm/lib/Transforms/GenVISC/Makefile