[all-commits] [llvm/llvm-project] f1b2dd: [AArch64][BTI] Prevent Machine Scheduler from movi...

[Anatoly Trosinenko via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f1b2dd2a111f038420b3f69d4ce0b3b3f245c873
      https://github.com/llvm/llvm-project/commit/f1b2dd2a111f038420b3f69d4ce0b3b3f245c873
  Author: Anatoly Trosinenko <atrosinenko at accesssoftek.com>
  Date:   2023-10-06 (Fri, 06 Oct 2023)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
    M llvm/lib/Target/AArch64/AArch64InstrInfo.h
    M llvm/test/CodeGen/AArch64/machine-outliner-noreturn-no-stack.mir
    M llvm/test/CodeGen/AArch64/machine-outliner-noreturn-save-lr.mir
    A llvm/test/CodeGen/AArch64/misched-branch-targets.mir

  Log Message:
  -----------
  [AArch64][BTI] Prevent Machine Scheduler from moving branch targets (#68313)

Moving instructions that are recognized as branch targets by BTI can
result in runtime crash.

In outliner tests, replaced "BRK 1" with "HINT 0" (a.k.a. NOP) as a
generic outlinable instruction.