[all-commits] [llvm/llvm-project] 61375d: [AArch64][PAC] Support BLRA* instructions in SLS H...

[Anatoly Trosinenko via All-commits]

  Branch: refs/heads/users/atrosinenko/retry-pauth-sls-hardening
  Home:   https://github.com/llvm/llvm-project
  Commit: 61375d6b441ab97cf212f2ce72d8fa79583f797d
      https://github.com/llvm/llvm-project/commit/61375d6b441ab97cf212f2ce72d8fa79583f797d
  Author: Anatoly Trosinenko <atrosinenko at accesssoftek.com>
  Date:   2024-07-09 (Tue, 09 Jul 2024)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64SLSHardening.cpp
    A llvm/test/CodeGen/AArch64/speculation-hardening-sls-blra.mir

  Log Message:
  -----------
  [AArch64][PAC] Support BLRA* instructions in SLS Hardening pass

Make SLS Hardening pass handle BLRA* instructions the same way it
handles BLR. The thunk names have the form

    __llvm_slsblr_thunk_xN            for BLR thunks
    __llvm_slsblr_thunk_(aaz|abz)_xN  for BLRAAZ and BLRABZ thunks
    __llvm_slsblr_thunk_(aa|ab)_xN_xM for BLRAA and BLRAB thunks

Now there are about 1800 possible thunk names, so do not rely on linear
thunk function's name lookup and parse the name instead.

This patch reapplies llvm/llvm-project#97605.



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