Add structured atomic lowering - #31
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Add structured `tts.atomic_rmw` and `tts.atomic_cas` operations and lower eligible Triton atomics to them from pointer analysis. The RMW op also participates in the existing mask-dimension folder, and rewritten atomics now skip the erased op during the preorder walk. This combines the internal atomic RMW, RMW verifier, CAS, and walk-fix changes into one upstreamable feature patch. The scalar-splat atomic follow-up is left out because the GitHub base does not yet contain the separate scalar-store rewrite it extends. Tests: cmake --build /tmp/triton/build/cmake.macosx-26.2-arm64-cpython-3.12 --target triton-shared-opt Tests: lit -j1 -Dfilecheck=/Users/nhat/.triton/llvm/llvm-87717bf9-macos-arm64/bin/FileCheck -sv /tmp/triton/build/cmake.macosx-26.2-arm64-cpython-3.12/third_party/triton_shared/test --filter atomics Tests: lit -j1 -Dfilecheck=/Users/nhat/.triton/llvm/llvm-87717bf9-macos-arm64/bin/FileCheck -sv /tmp/triton/build/cmake.macosx-26.2-arm64-cpython-3.12/third_party/triton_shared/test/Conversion/TritonToStructured Tests: lit -j1 -Dfilecheck=/Users/nhat/.triton/llvm/llvm-87717bf9-macos-arm64/bin/FileCheck -sv /tmp/triton/build/cmake.macosx-26.2-arm64-cpython-3.12/third_party/triton_shared/test
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Add structured
tts.atomic_rmwandtts.atomic_casoperations and lower eligible Triton atomics to them from pointer analysis.