The SymVT stuff has not been moved yet, I removed it for now.
The test/VISC tests also have not been moved yet, so they may not
work.

code enquires about its ancestor. Enables to run visc parboil benchmarks on x86
alone

(2) Modified unittests to have llvm.visc.init and cleanup intrinsics. Now they
all pass

(3) Modified visc.mk to easily compile visc version for just x86. Pass
TARGET=x86 as option to make command

(1) Working on implementation of further lowereing the visc api by breaking the
DFG launch call into init, launch, wait, cleanup. There are issues pending when
these require some kind of inter procedural analysis to link init, launch, wait
and cleanup. This is necessary during code generation.
(2) Also contains changes which simplify GenVISC pass by using macro for
identifying various source __visc__ calls

(2) Added dummy function calls for visc initialization and visc clean up to
benchmarks and added support for it to all the passes.
(3) Timers are now only printed once
(4) Added extra timers to parboil header file

(2) PTX Pass changed to support parameters being used to pass grid and block
    size to kernel nodes.
M    Transforms/ClearDFG/ClearDFG.cpp
M    Transforms/DFG2LLVM_NVPTX/DFG2LLVM_NVPTX.cpp

the graphID as reference. It is returned by the launch functions. Makes it
easier to write code
(2) BuildDFG support for data transfer to PTX nodes
(3) ClearDFG bugs fixed
(4) visc-rt modified
(5) Test case 3level.ll modified to match the new launch and wait intrinsic
format

M    llvm/test/VISC/unitTests/3level.ll
M    llvm/include/llvm/IR/DFGraph.h
M    llvm/include/llvm/IR/IntrinsicsVISC.td
M    llvm/projects/visc-rt/visc-rt.cpp
M    llvm/lib/Transforms/BuildDFG/BuildDFG.cpp
M    llvm/lib/Transforms/DFG2LLVM_X86/DFG2LLVM_X86.cpp
M    llvm/lib/Transforms/ClearDFG/ClearDFG.cpp

delete only nodes for which code has been generated.
(2) Modified DFG2LLVM_X86 to not delete Launch Intrinsic (now that is part of
clearDFG) and fixed freed the memory allocated by CodeGenTraversal
M    llvm/lib/Transforms/DFG2LLVM_X86/DFG2LLVM_X86.cpp
A    llvm/lib/Transforms/ClearDFG
A    llvm/lib/Transforms/ClearDFG/ClearDFG.cpp
A    llvm/lib/Transforms/ClearDFG/ClearDFG.exports
A    llvm/lib/Transforms/ClearDFG/CMakeLists.txt
A    llvm/lib/Transforms/ClearDFG/Makefile