Exemple #1
0
void
GreedyAllocator::informSnapshot(LInstruction *ins)
{
    LSnapshot *snapshot = ins->snapshot();
    for (size_t i = 0; i < snapshot->numEntries(); i++) {
        LAllocation *a = snapshot->getEntry(i);
        if (!a->isUse())
            continue;

        // Every definition in a snapshot gets a stack slot. This
        // simplification means we can treat normal snapshots and LOsiPoint
        // snapshots (which follow calls) the same, without adding a special
        // exception to note that registers are spilled at the LOsiPoint.
        VirtualRegister *vr = getVirtualRegister(a->toUse());
        allocateStack(vr);
        *a = vr->backingStack();
    }
}