lp:~pali/llvm/polly-3.9

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2527. By hans on 2016-08-18

ReleaseNotes: drop in-progress warning

2526. By hans on 2016-07-18

Creating release_39 branch off revision 275826

2525. By grosser on 2016-07-18

GPGPU: collect array references

Initialize the list of references to a GPU array to ensure that the arrays that
need to be passed to kernel calls are computed correctly. Furthermore, the very
same information is also necessary to compute synchronization correctly. As the
functionality to compute these references is already available, what is left for
us to do is only to connect the necessary functionality to compute array
reference information.

2524. By grosser on 2016-07-18

GPGPU: Pull implementation out of class definition

This will allow us to see the full class definition even after we add
non-trivial implementations of the different member functions.

2523. By grosser on 2016-07-18

test: Add missing 'REQUIRES' line

2522. By grosser on 2016-07-18

GPGPU: Create host control flow

Create LLVM-IR for all host-side control flow of a given GPU AST. We implement
this by introducing a new GPUNodeBuilder class derived from IslNodeBuilder. The
IslNodeBuilder will take care of generating all general-purpose ast nodes, but
we provide our own createUser implementation to handle the different GPU
specific user statements. For now, we just skip any user statement and only
generate a host-code sceleton, but in subsequent commits we will add handling of
normal ScopStmt's performing computations, kernel calls, as well as host-device
data transfers. We will also introduce run-time check generation and LICM in
subsequent commits.

2521. By grosser on 2016-07-16

GPGPU: Abort if any dummy function is called

This ensures that accidental calls to these functions will break loadly instead
of corrupting the stack with invalid return values.

These functions have been introduced earlier as replacement of pet and parts of
ppcg which we will never use and consequently have not been imported or compiled
into Polly.

2520. By grosser on 2016-07-15

GPGPU: Format statements scheduled on the host ourselves

Otherwise ppcg would try to call into pet functionality that this not available,
which obviously will cause trouble. As we can easily print these statements
ourselves, we just do so.

2519. By grosser on 2016-07-15

GPGPU: Use schedule whole components for scheduler

This option increases the scalability of the scheduler and allows us to remove
the 'gisting' workaround we introduced in r275565 to handle a more complicated
test case. Another benefit of using this option is also that the generated
code looks a lot more streamlined.

Thanks to Sven Verdoolaege for reminding me of this option.

2518. By grosser on 2016-07-15

GPGPU: Drop domain constraints from flow dependences

This works around a shortcoming of the isl scheduler, which even for some
smaller test cases does not terminate in case domain constraints are part
of the flow dependences.