[all-commits] [llvm/llvm-project] 736ffd: [RISCV] Add X27 to SavedRegs when X26 is in SavedR...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 736ffdc38347f3f83cf7b3c034b8e837f46f7eab
      https://github.com/llvm/llvm-project/commit/736ffdc38347f3f83cf7b3c034b8e837f46f7eab
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2024-05-14 (Tue, 14 May 2024)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVFrameLowering.cpp
    M llvm/test/CodeGen/RISCV/push-pop-popret.ll

  Log Message:
  -----------
  [RISCV] Add X27 to SavedRegs when X26 is in SavedRegs for cm.push/pop (#92067)

cm.push can't save X26 without also saving X27. This removes two other
checks for this case.

This causes CFI to be emitted since X27 is now explicitly a callee saved
register.

The affected tests use inline assembly to clobber X26 rather than the
whole range of s0-s10.



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