Specifically, the HPVM installer downloads the LLVM, Clang, compiler-rt, libcxxabi and lld, copies HPVM source into
llvm/tools and build the entire tree. A modified LLVM C-Backend is also built as a part of HPVM and is currently used to generate OpenCL kernels for GPUs.
Alternatively, CMake can be run manually.
```shell
cd hpvm/build
cmake ../llvm [options]
```
Some common options that can be used with CMake are:
* -DCMAKE_INSTALL_PREFIX=directory --- Specify for directory the full pathname of where you want the HPVM tools and libraries to be installed.
* -DCMAKE_BUILD_TYPE=type --- Valid options for type are Debug, Release, RelWithDebInfo, and MinSizeRel. Default is Debug.
* -DLLVM_ENABLE_ASSERTIONS=On --- Compile with assertion checks enabled (default is Yes for Debug builds, No for all other build types).
To use hpvm to compile benchmarks set environment variable `LLVM_SRC_ROOT` to llvm directory in your local repository
