[all-commits] [llvm/llvm-project] 299ea9: [VPlan] Drop poison-generating flags on induction ...

[Ramkumar Ramachandra via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 299ea95747a5f4eb052fe37e5e10f043b8c11cf8
      https://github.com/llvm/llvm-project/commit/299ea95747a5f4eb052fe37e5e10f043b8c11cf8
  Author: Ramkumar Ramachandra <ramkumar.ramachandra at codasip.com>
  Date:   2025-11-21 (Fri, 21 Nov 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp
    M llvm/test/Transforms/LoopVectorize/AArch64/epilog-vectorization-widen-inductions.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/optsize_minsize.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/streaming-compatible-sve-no-maximize-bandwidth.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-interleaved-accesses.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve2-histcnt-too-many-deps.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve2-histcnt.ll
    M llvm/test/Transforms/LoopVectorize/RISCV/tail-folding-cond-reduction.ll
    M llvm/test/Transforms/LoopVectorize/X86/epilog-vectorization-inductions.ll
    M llvm/test/Transforms/LoopVectorize/check-prof-info.ll
    M llvm/test/Transforms/LoopVectorize/induction-step.ll
    M llvm/test/Transforms/LoopVectorize/induction-wrapflags.ll
    M llvm/test/Transforms/LoopVectorize/induction.ll
    M llvm/test/Transforms/LoopVectorize/instruction-only-used-outside-of-loop.ll
    M llvm/test/Transforms/LoopVectorize/interleaved-accesses-gep-nowrap-flags.ll
    M llvm/test/Transforms/LoopVectorize/interleaved-accesses.ll
    M llvm/test/Transforms/LoopVectorize/iv-select-cmp-trunc.ll
    M llvm/test/Transforms/LoopVectorize/optimal-epilog-vectorization.ll
    M llvm/test/Transforms/LoopVectorize/pr35773.ll
    M llvm/test/Transforms/LoopVectorize/preserve-dbg-loc-and-loop-metadata.ll
    M llvm/test/Transforms/LoopVectorize/single-value-blend-phis.ll

  Log Message:
  -----------
  [VPlan] Drop poison-generating flags on induction trunc (#168922)

After truncating an integer-induction, neither nuw nor nsw hold.

Fixes #168902.

Co-authored-by: Florian Hahn <flo at fhahn.com>



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