https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79748
Fangrui Song <i at maskray dot me> changed:
What |Removed |Added
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CC| |i at maskray dot me
--- Comment #4 from Fangrui Song <i at maskray dot me> ---
Can be closed. no_callee_saved_registers is implemented in 2024
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103503
It seems designed for interrupt handlers and modifies a calling convention,
which is less useful than a calling convention with an unstable ABI that can
change argument registers.
See discussions on https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119628 and
https://discourse.llvm.org/t/rfc-exposing-ghccc-calling-convention-as-preserve-none-to-clang/74233
