> The facility does that have to be that general. There are 4 cycles
> between every two instructions. See LiveIntervalAnalysis:
>
> struct InstrSlots {
> enum {
> LOAD = 0,
> USE = 1,
> DEF = 2,
> STORE = 3,
> NUM = 4
> };
> };
>
> We can restrict the constraint range to 1 - 3. This ensures the last
> use is always the kill while retaining its flexibility.
>
> Evan
I will try to implement this. Do you have any suggestion for
constraint name and syntax?
Lauro
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