[PATCH] D130145: [AArch64] Simplify BTI/PAC-RET module flags

[Fangrui Song via Phabricator via cfe-commits]

MaskRay created this revision.
MaskRay added reviewers: danielkiss, pcc.
Herald added subscribers: StephenFan, hiraditya, kristof.beyls.
Herald added a project: All.
MaskRay requested review of this revision.
Herald added a reviewer: jdoerfert.
Herald added subscribers: llvm-commits, cfe-commits, sstefan1.
Herald added projects: clang, LLVM.

These module flags use the Min merge behavior with a default value of
zero, so we don't need to emit them if zero.

Also delete the AutoUpgrade.cpp code. The previous Error behavior is
compatible with the new Min behavior. The Min behavior makes an absent
value zero but this property isn't so strongly needed.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D130145

Files:
  clang/lib/CodeGen/CodeGenModule.cpp
  clang/test/CodeGen/aarch64-ls64-inline-asm.c
  clang/test/CodeGen/aarch64-ls64.c
  clang/test/CodeGen/aarch64-sign-return-address.c
  clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_ld1.c
  clang/test/CodeGen/arm-branch-protection-attr-2.c
  clang/test/OpenMP/distribute_parallel_for_simd_if_codegen.cpp
  clang/test/OpenMP/distribute_parallel_for_simd_num_threads_codegen.cpp
  clang/test/OpenMP/target_teams_distribute_parallel_for_simd_if_codegen.cpp
  clang/test/OpenMP/teams_distribute_parallel_for_simd_if_codegen.cpp
  llvm/lib/IR/AutoUpgrade.cpp