[all-commits] [llvm/llvm-project] ba471b: Revert "[CodeGen][AArch64] Ensure isSExtCheaperTha...

[david-arm via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ba471ba8d2a37617684e0bd87fe15b583f7e7de0
      https://github.com/llvm/llvm-project/commit/ba471ba8d2a37617684e0bd87fe15b583f7e7de0
  Author: David Sherwood <david.sherwood at arm.com>
  Date:   2022-01-13 (Thu, 13 Jan 2022)

  Changed paths:
    M llvm/include/llvm/CodeGen/TargetLowering.h
    M llvm/lib/CodeGen/CodeGenPrepare.cpp
    M llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
    M llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.h
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/lib/Target/RISCV/RISCVISelLowering.h
    M llvm/test/CodeGen/AArch64/arm64-vshuffle.ll
    M llvm/test/CodeGen/AArch64/arm64_32-atomics.ll
    M llvm/test/CodeGen/AArch64/cmpxchg-idioms.ll
    M llvm/test/CodeGen/AArch64/dag-numsignbits.ll
    M llvm/test/CodeGen/AArch64/fast-isel-cmp-vec.ll
    M llvm/test/CodeGen/AArch64/funnel-shift.ll
    M llvm/test/CodeGen/AArch64/reduce-and.ll
    M llvm/test/CodeGen/AArch64/redundant-copy-elim-empty-mbb.ll
    M llvm/test/CodeGen/AArch64/statepoint-call-lowering.ll
    M llvm/test/CodeGen/AArch64/sve-vector-splat.ll
    M llvm/test/CodeGen/AArch64/unfold-masked-merge-vector-variablemask.ll
    M llvm/test/CodeGen/AArch64/vecreduce-and-legalization.ll

  Log Message:
  -----------
  Revert "[CodeGen][AArch64] Ensure isSExtCheaperThanZExt returns true for negative constants"

This reverts commit 31009f0b5afb504fc1f30769c038e1b7be6ea45b.

It seems to be causing SVE VLA buildbot failures and has introduced a
genuine regression. Reverting for now.