[all-commits] [llvm/llvm-project] 23a239: Revert "[InstCombine] Infer nuw for gep inbounds f...

[Alexander Kornienko via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 23a239267e8a1d20ed10d3545feaf2a2bb70b085
      https://github.com/llvm/llvm-project/commit/23a239267e8a1d20ed10d3545feaf2a2bb70b085
  Author: Alexander Kornienko <alexfh at google.com>
  Date:   2024-12-18 (Wed, 18 Dec 2024)

  Changed paths:
    M clang/test/CodeGen/attr-counted-by.c
    M clang/test/CodeGen/union-tbaa1.c
    M llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
    M llvm/test/Transforms/InstCombine/AMDGPU/memcpy-from-constant.ll
    M llvm/test/Transforms/InstCombine/cast_phi.ll
    M llvm/test/Transforms/InstCombine/load-cmp.ll
    M llvm/test/Transforms/InstCombine/memcpy-addrspace.ll
    M llvm/test/Transforms/InstCombine/memcpy-from-global.ll
    M llvm/test/Transforms/InstCombine/stpcpy-1.ll
    M llvm/test/Transforms/InstCombine/stpcpy_chk-1.ll
    M llvm/test/Transforms/InstCombine/strlen-1.ll
    M llvm/test/Transforms/InstCombine/strlen-4.ll
    M llvm/test/Transforms/InstCombine/strncat-2.ll
    M llvm/test/Transforms/InstCombine/strnlen-3.ll
    M llvm/test/Transforms/InstCombine/strnlen-4.ll
    M llvm/test/Transforms/InstCombine/strnlen-5.ll
    M llvm/test/Transforms/InstCombine/sub-gep.ll
    M llvm/test/Transforms/InstCombine/wcslen-1.ll
    M llvm/test/Transforms/InstCombine/wcslen-3.ll
    M llvm/test/Transforms/InstCombine/wcslen-5.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-interleaved-accesses.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve2-histcnt.ll
    M llvm/test/Transforms/LoopVectorize/X86/small-size.ll
    M llvm/test/Transforms/LoopVectorize/X86/x86_fp80-vector-store.ll
    M llvm/test/Transforms/LoopVectorize/interleaved-accesses.ll
    M llvm/test/Transforms/LoopVectorize/multiple-address-spaces.ll
    M llvm/test/Transforms/LoopVectorize/non-const-n.ll
    M llvm/test/Transforms/PhaseOrdering/X86/excessive-unrolling.ll
    M llvm/test/Transforms/SLPVectorizer/X86/operandorder.ll

  Log Message:
  -----------
  Revert "[InstCombine] Infer nuw for gep inbounds from base of object" (#120460)

Reverts llvm/llvm-project#119225 due to the lack of sanitizer support,
large potential of breaking code containing latent UB, non-trivial
localization and investigation, and what seems to be a bad interaction
with msan (a test is in the works).

Related discussions:
https://github.com/llvm/llvm-project/pull/119225#issuecomment-2551904822
https://github.com/llvm/llvm-project/pull/118472#issuecomment-2549986255



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