egcs/gcc ChangeLog config/mips/mips.h config/m ...

[scox@cygnus.com]

CVSROOT:	/egcs/carton/cvsfiles
Module name:	egcs
Changes by:	scox@egcs.cygnus.com	98/12/01 16:52:58

Modified files:
	gcc            : ChangeLog 
	gcc/config/mips: mips.h mips.md 

Log message:
	* mips.md (divmodsi4*, divmoddi4*, udivmodsi4*, udivmoddi4): Add -mcheck-range-division/
	-mcheck-zero-division checking.  Avoid as macro expansion.  Use hi/lo as destination
	register.
	(div_trap): New.
	(divsi3*, divdi3*, modsi3*, moddi3*, udivsi3*, udivdi3*, umodsi3*,
	umoddi3*): Add -mcheck-range-division/-mcheck-zero-division checking.
	Avoid as macro expansion.  Use hi/lo as destination register.
	* mips.h (MASK_CHECK_RANGE_DIV): New.
	(MASK_NO_CHECK_ZERO_DIV): New.
	(ELIMINABLE_REGS): Added GP_REG_FIRST + 31.
	(CAN_ELIMINATE, INITIAL_ELIMINATION_OFFSET): Allow for getting
	return address for leaf functions out of r31 to support
	builtin_return_address.