message: Don't ICE on C-cmse-nonsecure-call either
diff: @@ -49,9 +49,11 @@ pub(crate) fn conv_to_call_conv(sess: &Session, c: Conv, default_call_conv: Call
  Conv::X86Intr => sess.fatal("x86-interrupt call conv not yet implemented"),
  Conv::ArmAapcs => sess.fatal("aapcs call conv not yet implemented"),
  + Conv::CCmseNonSecureCall => {
  + sess.fatal("C-cmse-nonsecure-call call conv is not yet implemented");
  + }
  - Conv::CCmseNonSecureCall
  - | Conv::Msp430Intr
  + Conv::Msp430Intr
  | Conv::PtxKernel
  | Conv::AmdGpuKernel
  | Conv::AvrInterrupt
  