[pull] master from tensorflow:master#1974
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The xla_framework dialect and its associated passes (LegalizeXLAFrameworkToLLVM, OutlineWithXLAFramework) are legacy and no longer used. Delete them and their tests, and remove their registration from various opt tools. PiperOrigin-RevId: 938712305
PiperOrigin-RevId: 938716023
Implements openxla/xla#44868 PiperOrigin-RevId: 938717417
PiperOrigin-RevId: 938728574
Initial XLA PR to support unstable TopK operations in JAX/XLA.
By introducing the is_stable flag (defaulting to true for backward compatibility), we can eventually expose is_stable=False at the Python JAX level and dispatch to NVIDIA RAFT select_k kernel
Changes:
- Added the is_stable attr to CHLO_TopKOp and MHLO_TopKOp
- Updated CHLO to MHLO and StableHLO legalization patterns to propagate the flag
- Plumbed the attribute through HloTopKInstruction ToProto and hlo parser.
- Updated IdenticalSlowPath to account for the flag.
- Modified topk_rewriter.cc to ensure that when TopK is lowered or decomposed, is_stable is preserved on the resulting Sort instruction.
- Updated CustomCall TopK generator to print backend config (e.g. {is_stable = false})
PiperOrigin-RevId: 938761815
…compiler. PiperOrigin-RevId: 938790708
PiperOrigin-RevId: 938791694
…or AssignBuffersForComputations, similar to go/xla-fast-buffer-assignment. It adds `FAST_MERGE` to `AssignmentAlgorithmForComputationsWithoutOrderingProto` and implements `FastMergeBufferAllocationsManagerForComputationsWithoutOrdering` to track buffer liveness and reuse expired allocations from a free pool. Instead of the default O(N * M) naive allocation scan (where N is the number of buffers and M is the number of allocations, leading to O(N^2) worst-case), this algorithm achieves O(N log M) time complexity for allocation reuse. Key features: 1. Incoming buffers are processed in increasing order of their live range start times (BufferOrder::kLiveRangeStart). It tracks active allocations in a min-heap (`active_allocations_`) ordered by their maximum live range end time. 2. Before assigning a new buffer, it advances the sweep-line (`UpdateLiveness`), moving any active allocations that have fully expired (max_end_time <= new_buffer.min_start) into a free pool. By this, allocations in the free pool are guaranteed to have no live range conflicts with the incoming buffer. 3. The free pool (`free_pool_`) indexes available allocations by color and size using balanced trees (absl::btree_multimap). Finding the smallest fitting reusable allocation takes O(log M) time via `lower_bound`, avoiding linear scans over all existing allocations. PiperOrigin-RevId: 938794789
…HLO <-> StableHLO translation. Custom-call operand/result layout constraints that use a non-default memory space are now preserved across the HLO <-> StableHLO round trip via the mhlo.operand_memory_spaces / mhlo.result_memory_spaces attributes, instead of failing with UNIMPLEMENTED. PiperOrigin-RevId: 938812415
The error message incorrectly referred to "consumers" and used `users().size()` instead of "operands" and `operand_count()`. PiperOrigin-RevId: 938818957
…re strictly non-negative. PiperOrigin-RevId: 938844012
… found before calling RemoveAt in the Remove utility. Added unit test. PiperOrigin-RevId: 938845085
Delete legacy TPU compile/execute ops, compilation cache, and related C APIs. PiperOrigin-RevId: 938847080
…dim is divisible by 8 / bits_per_element. PiperOrigin-RevId: 938847861
… TFLite concatenation kernel. PiperOrigin-RevId: 938856354
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