generate warning messages about an instruction that changes the interrupt
state not being followed by a NOP instruction.
* config/msp430/msp430.c: Replace known mcu array with known
msp430 ISA mcu name array.
Accept any name for -mmcu option.
Add -mz option to warn about missing NOP following an interrupt
status change.
(check_for_nop): New.
(msp430_operands): Emit a warning, if requested, when an interrupt
changing instruction is not followed by a NOP.
* doc/c-msp430.c: Document -mz option.
* gas/msp430/bad.d: Add -mz option.
* gas/msp430/bad.s: Add more cases where warnings should be
generated.
* gas/msp430/bad.l: Add expected warning messages.
65d7bab591