Re: Caller/Callee saved Registers

robertsw@agcs.com (Ye Wilde Ryder) writes:
> I've often thought the solution to this problem could easily be solved in
> hardware. A call instruction that indicates which regs need saving in a


This would be very tough to make efficient on many RISC architectures.
Register save and restore will only exercise the data unit leaving the
other functional units sitting idle for however long it takes to get or
put the possibly many registers. Thus it is often profitable to schedule
other instructions intertwined in the register saving and restoring.
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Paul Beusterien paulb@travis.csd.harris.com
M.S. #161
Harris Computer Systems (305) 973 5270
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