[all-commits] [llvm/llvm-project] 848458: Revert "[X86] Narrow BT/BTC/BTR/BTS compare + RMW ...

[Vitaly Buka via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8484584eca330baa31e6495d3ee2f32aadc1074b
      https://github.com/llvm/llvm-project/commit/8484584eca330baa31e6495d3ee2f32aadc1074b
  Author: Vitaly Buka <vitalybuka at google.com>
  Date:   2025-11-01 (Sat, 01 Nov 2025)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/bittest-big-integer.ll

  Log Message:
  -----------
  Revert "[X86] Narrow BT/BTC/BTR/BTS compare + RMW patterns on very large integers (#165540)" (#165979)

This reverts commit a55a7207c7e4d98dad32e8d53dd5964ee833edd9.

See breaks i386 on bot and Rust, see #165540.



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