   0  residual_call_irf_f $<* fn ccall_acos>, I[], R[], F[%f0], <CallDescr(f) EF=2> -> %f1
   9  inline_call_irf_v <JitCode '_error_check_errno_unary_math__False'>, I[$False], R[], F[%f0, %f1]
  18  -live- %f1
  21  float_return %f1
