[all-commits] [llvm/llvm-project] 4e98ad: [RISCV] Add tests for F/D with non-FP ABI to inter...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4e98adf677fe6eb9aea5606c44ccc97f02d2f48a
      https://github.com/llvm/llvm-project/commit/4e98adf677fe6eb9aea5606c44ccc97f02d2f48a
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2024-04-08 (Mon, 08 Apr 2024)

  Changed paths:
    M llvm/test/CodeGen/RISCV/interrupt-attr.ll

  Log Message:
  -----------
  [RISCV] Add tests for F/D with non-FP ABI to interrupt-attr.ll. NFC

Without a floating point aware ABI for callees, an interrupt handler
needs to save all floating point registers even normally callee saved.

We are currently unnecessarily saving callee saved FP registers when
a floating point ABI is used by the callee. This is different than gcc
as noted in this discourse
post https://discourse.llvm.org/t/has-bugs-when-optimizing-save-restore-csrs-by-changing-csr-xlen-f32-interrupt/78200/1



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