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argoffset
2011 Dec 09
2
[LLVMdev] Spilling predicate registers
...he
> first for storing the predicate, second for a large offset that does not
> fit into the spill instruction) by using a constant extended value. A
> constant extend value is a value encoded in the instruction stream, taking
> up one instruction slot.
>
> {
> r10 = memd(fp+##LARGEOFFSET)
> }
> For us this is the better solution as we want as little as possible spill
> code in hot regions.
Neat ISA!
> To support 2 scavenged registers, as you already said, we would need:
> * target hook to indicate the maximum number of simultanously live
> scavenged registers ne...