[all-commits] [llvm/llvm-project] 4880e1: [RISCV] Support frame pointers in SiFive CLIC pree...

[Zeyi Xu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4880e16f73dfc25762a857b9c08ad2bd5c14c8e0
      https://github.com/llvm/llvm-project/commit/4880e16f73dfc25762a857b9c08ad2bd5c14c8e0
  Author: Zeyi Xu <zeyi2 at nekoarch.cc>
  Date:   2026-09-25 (Fri, 25 Sep 2026)

  Changed paths:
    M clang/docs/ReleaseNotes.md
    M llvm/lib/Target/RISCV/RISCVFrameLowering.cpp
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    R llvm/test/CodeGen/RISCV/sifive-interrupt-attr-err.ll
    M llvm/test/CodeGen/RISCV/sifive-interrupt-attr.ll
    M llvm/test/CodeGen/RISCV/sifive-interrupt-frame-flags.ll
    A llvm/test/CodeGen/RISCV/sifive-interrupt-frame-pointer.ll

  Log Message:
  -----------
  [RISCV] Support frame pointers in SiFive CLIC preemptible handlers (#221318)

This commit adds frame-pointer support for SiFive CLIC preemptible
handlers by using t0 to save mcause and mepc to dedicated stack slots in
both cases.



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