Path B: AIR emits logical shim/memtiles end-to-end; defer all placement to aie-place-tiles (RFC #1567)#1609

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erwei-xilinx wants to merge 39 commits into

Xilinx:mainfrom

erwei-xilinx:path-b-l2-placer-driven

Commits on May 21, 2026

[Path B 1/7] Switch allocation_info_t + DMAAllocator base API to TileLike

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[Path B 2/7] Make allocateLockOp + ShimDMAAllocator::getBuffer TileLike-aware

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[Path B 3/7] AIRMergeUnrolledDevices: merge LogicalTileOps too

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[Path B 4/7] AIR emits logical shim/memtiles end-to-end

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[Path B 5/7] aircc: invoke aie-place-tiles after air-merge-unrolled-devices

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[Path B 6/7] Lit test migration: chain --aie-place-tiles in RUN lines

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[Path B 7/7] Lit test migration: CHECK-DAG for tile/buffer/lock listings

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[Path B] clang-format-17 fixes from CI

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[Path B] Group shim DMAs onto same LTO; reserve lock IDs across LTO collapses

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[Path B] XFAIL the 13 AIRToAIE tests pending Path B CHECK migration

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[Path B] Hint shim col + add aie-place-tiles to xrt/05_extern_func

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[Path B] Revert shim col-hint — broke wider NPU1 capacity check

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[Path B] Restore baseline 1-shim-per-compute-col placement

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[Path B] Bump mlir-aie pin to 8125c33 (latest wheel)

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Revert "[Path B] XFAIL the 13 AIRToAIE tests pending Path B CHECK migration"
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[Path B] Migrate 11 AIRToAIE lit CHECKs to placer-driven output

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[Path B] AIRToAIE tests: check LTO output, not placer output

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[Path B] AIRToAIE tests: drop --aie-place-tiles, check LTO output

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[Path B] Fix objfifo dominance bug: hoist tile-likes before objfifo

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[Path B] objfifo: stop resolving shim LTOs in AIR; defer to aie-place-tiles

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[Path B] aircc: drop place-tiles from aieModule; only place on npuModule

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[Path B] Place once, in aiecc only — make airrt-to-npu LTO-aware

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[Path B] ShimDMAAllocator: restore pre-Path-B (col, channel) rotation

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[Path B] ShimDMAAllocator: scope packet-flow reuse to same-col LTOs

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[Path B] allocateLockOp: scope ID reservation to same-col LTOs

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[Path B] AIR emits unhinted LTOs; defer placement to aie-place-tiles
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[Path B] Re-bump mlir-aie pin to 886d932 (includes mlir-aie #3068)
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[Path B] AIRToAIE tests: migrate 17 CHECK drifters to placer-driven LTOs
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[Path B] ShimDMAAllocator: bucket by far-side LTO when col is unknown
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[Path B] ShimDMAAllocator: spread L3-direct broadcasts across shim LTOs

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[Path B] ShimDMAAllocator: order shim LTOs by their target memtile

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[Path B] L3 shim allocation: process flows in rigidity-decreasing order

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[Path B] allocation_info_t: add getDmaTileOp/getDmaTileValue accessors

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Revert "[Path B] allocation_info_t: add getDmaTileOp/getDmaTileValue accessors"
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