[all-commits] [llvm/llvm-project] 392807: [RISCV] Separate HW/SW shadow stack on RISC-V (#11...

[Jesse Huang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 392807ec3e7243fee98bec5d59ea8ea58ad022cd
      https://github.com/llvm/llvm-project/commit/392807ec3e7243fee98bec5d59ea8ea58ad022cd
  Author: Jesse Huang <jesse.huang at sifive.com>
  Date:   2024-11-08 (Fri, 08 Nov 2024)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVFrameLowering.cpp
    M llvm/test/CodeGen/RISCV/shadowcallstack.ll

  Log Message:
  -----------
  [RISCV] Separate HW/SW shadow stack on RISC-V (#112478)

This patch follows https://github.com/llvm/llvm-project/pull/112477.
Previously `-fsanitize=shadow-call-stack` (which get transform to
`Attribute::ShadowCallStack`) is used for enable both hardware and
software shadow stack, and another option `-force-sw-shadow-stack` is
needed if the user wants to use the software shadow stack where hardware
software shadow stack could be supported. It decouples both by using the
string attribute `hw-shadow-stack` to distinguish from the software
shadow stack attribute.



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