[all-commits] [llvm/llvm-project] 4f2ee0: [BOLT][AArch64] Do not crash on authenticated bran...

[Anatoly Trosinenko via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4f2ee07454b0d0b156a728ca540f584310ef4a62
      https://github.com/llvm/llvm-project/commit/4f2ee07454b0d0b156a728ca540f584310ef4a62
  Author: Anatoly Trosinenko <atrosinenko at accesssoftek.com>
  Date:   2025-03-17 (Mon, 17 Mar 2025)

  Changed paths:
    M bolt/lib/Target/AArch64/AArch64MCPlusBuilder.cpp
    M bolt/test/AArch64/test-indirect-branch.s

  Log Message:
  -----------
  [BOLT][AArch64] Do not crash on authenticated branch instructions (#129898)

When an indirect branch instruction is decoded, analyzeIndirectBranch
method is asked if this is a well-known code pattern. On AArch64, the
only special pattern which is detected is Jump Table, emitted as a
branch to the sum of a constant base address and a variable offset.
Therefore, `Inst.getOpcode()` being one of `AArch64::BRA*` means Inst
cannot belong to such Jump Table pattern, thus returning early.



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