[all-commits] [llvm/llvm-project] 0b3afd: [MLIR][LLVM] Fix non-deterministic alloca order in...

[Mehdi Amini via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0b3afd35c41d5424e8a0e156f78f8a293934b6a5
      https://github.com/llvm/llvm-project/commit/0b3afd35c41d5424e8a0e156f78f8a293934b6a5
  Author: Mehdi Amini <joker.eph at gmail.com>
  Date:   2026-04-15 (Wed, 15 Apr 2026)

  Changed paths:
    M mlir/lib/Dialect/LLVMIR/IR/LLVMMemorySlot.cpp
    M mlir/test/Dialect/LLVMIR/sroa-intrinsics.mlir

  Log Message:
  -----------
  [MLIR][LLVM] Fix non-deterministic alloca order in SROA under LLVM_REVERSE_ITERATION (#192087)

AllocaOp::destructure iterated over usedIndices (SmallPtrSet) whose
order depends on pointer values, causing allocas for destructured
subslots to be emitted in a non-deterministic order when
LLVM_REVERSE_ITERATION is enabled. Sort indices ascending by integer
value before creating allocas to guarantee a stable output order. Update
four test cases in sroa-intrinsics.mlir whose CHECK patterns relied on
the old non-deterministic ordering.

Assisted-by: Claude Code

Co-authored-by: Claude Sonnet 4.6 <noreply at anthropic.com>



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