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Re: Reserving a number of consecutive registers
> You should use the DF framework in 4.3.x and later.
Ok, I'll try to look at that. Is there an area where I can see how to
initialize the framework and get information about which registers are
free?
Right now, I'm looking in combine.c to see how they are using it. Any
insight would be useful,
Thanks!
Jc
On Mon, Apr 20, 2009 at 1:52 PM, Eric Botcazou <ebotcazou@adacore.com> wrote:
>> Ok, so if I copy the locally allocated registers into N consecutive
>> hard registers BEFORE the group of loads, then rerun cprp_harderg, it
>> should replace the ones of the loads to the ones of the copies ? And
>> then I suppose the copies will just disappear at a later pass, correct
>> ?
>
> Something like that, to be experimented though.
>
>> I guess, my final question is, that pass will be defined with the
>> TARGET_MACHINE_DEPENDENT_REORG define but how do I see if a register
>> is free at that point ? Can I still use the TEST_HARD_REG_BIT macros ?
>
> You should use the DF framework in 4.3.x and later.
>
> --
> Eric Botcazou
>