Translate the selected parallel loop body into a ptx string and run it with the
cuda driver API. We limit this preliminary implementation to target the
following special test cases:

  - Support only 2-dimensional parallel loops with or without only one innermost
    non-parallel loop.
  - Support write memory access to only one array in a SCoP.

The patch was committed with smaller changes to the build system:

There is now a flag to enable gpu code generation explictly. This was required
as we need the llvm.codegen() patch applied on the llvm sources, to compile this
feature correctly. Also, enabling gpu code generation does not require cuda.
This requirement was removed to allow 'make polly-test' runs, even without an
installed cuda runtime.

Contributed by:  Yabin Hu  <yabin.hwu@gmail.com>

llvm-svn: 161239

The Apple linker fails by default, if some function calls can not be resolved at
link time. However, all functions that are part of LLVM itself will not be
linked into Polly, but will be provided by the compiler that Polly is loaded
into.  Hence, during linking we need to ignore failures due to unresolved
function calls.

llvm-svn: 161234

llvm-svn: 161157

Contributed by:  Yabin Hu  <yabin.hwu@gmail.com>

llvm-svn: 159725

We will use the cuda library for the upcoming automatic GPGPU code generation.

Contributed by: Yabin Hu  <yabin.hwu@gmail.com>

llvm-svn: 158064

llvm-svn: 156199

  instead of loading the "LLVMConfig.cmake" which is only installed when
  llvm configured by cmake.

llvm-svn: 153503

llvm-svn: 153439

llvm-svn: 152925

llvm-svn: 152921

Build Polly without run time type info (rtti), as otherwise Polly cannot be
loaded into a LLVM that is built without rtti.

llvm-svn: 134180

This version is equivalent to commit ba26ebece8f5be84e9bd6315611d412af797147e
in the old git repository.

llvm-svn: 130476