R600: Add LDS_MAX_[U]INT[_RET] instructions for Evergreen

This was only present for SI before.

Cayman may still be missing, but I am unable to test that currently.

v2: Don't create atomicrmw max tests in separate file

Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>
CC: Tom Stellard <thomas.stellard@amd.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217589 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Add LDS_AND[_RET] instructions for Evergreen

Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217590 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Add LDS_OR[_RET] instructions for Evergreen

Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217591 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Add LDS_XOR[_RET] instructions for Evergreen

Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217592 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Add LDS_MIN_[U]INT[_RET] instructions for Evergreen

Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217593 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Add LDS_WRXCHG[_RET] instructions for Evergreen.

Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217594 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Test local atomics for evergreen

Now that the operations are all implemented, we can test this sub-arch here.

Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217595 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Add cmpxchg instruction for evergreen

Refactored the R600_LDS_1A2D class a bit to get it to actually work.

It seemed to be previously unused and broken.

We also have to disable the conversion to the noret variant for now in
R600ISelLowering because the getLDSNoRetOp method only handles 1A1D LDS ops.

Someone can feel free to modify the AMDGPU::getLDSNoRetOp method to
work for more than 1A1D variants of LDS operations. It's being left as a
future TODO for now.

Signed-off-by: Aaron Watry <awatry at gmail.com>
Reviewed-by: Matt Arsenault <matthew.arsenault@amd.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217596 91177308-0d34-0410-b5e6-96231b3b80d8