message: Handle SIGILL in LLVM.
diff: @@ -4,7 +4,7 @@ use libc::{
  c_void, mmap, mprotect, munmap, siginfo_t, MAP_ANON, MAP_PRIVATE, PROT_EXEC, PROT_NONE,
  PROT_READ, PROT_WRITE,
  };
  -use nix::sys::signal::{sigaction, SaFlags, SigAction, SigHandler, SigSet, SIGBUS, SIGSEGV};
  +use nix::sys::signal::{sigaction, SaFlags, SigAction, SigHandler, SigSet, SIGBUS, SIGSEGV, SIGILL};
  use std::ptr;
  /// `__register_frame` and `__deregister_frame` on macos take a single fde as an
  @@ -57,6 +57,7 @@ pub unsafe fn install_signal_handler() {
  );
  sigaction(SIGSEGV, &sa).unwrap();
  sigaction(SIGBUS, &sa).unwrap();
  + sigaction(SIGILL, &sa).unwrap();
  }
  #[cfg_attr(nightly, unwind(allowed))]
  