TRI = tri;
PhysRegEntries.assign(TRI->getNumRegs(), 0);
for (unsigned i = 0; i != CacheEntries; ++i)
- Entries[i].clear(indexes);
+ Entries[i].clear(mf, indexes);
}
InterferenceCache::Entry *InterferenceCache::get(unsigned PhysReg) {
}
void InterferenceCache::Entry::update(unsigned MBBNum) {
- BlockInterference *BI = &Blocks[MBBNum];
- BI->Tag = Tag;
- BI->First = BI->Last = SlotIndex();
-
SlotIndex Start, Stop;
tie(Start, Stop) = Indexes->getMBBRange(MBBNum);
// Use advanceTo only when possible.
- if (!PrevPos.isValid() || Start < PrevPos)
- for (unsigned i = 0, e = Iters.size(); i != e; ++i)
- Iters[i].find(Start);
- else
- for (unsigned i = 0, e = Iters.size(); i != e; ++i)
- Iters[i].advanceTo(Start);
- PrevPos = Start;
-
- // Check for first interference.
- for (unsigned i = 0, e = Iters.size(); i != e; ++i) {
- Iter &I = Iters[i];
- if (!I.valid())
- continue;
- SlotIndex StartI = I.start();
- if (StartI >= Stop)
- continue;
- if (!BI->First.isValid() || StartI < BI->First)
- BI->First = StartI;
+ if (PrevPos != Start) {
+ if (!PrevPos.isValid() || Start < PrevPos)
+ for (unsigned i = 0, e = Iters.size(); i != e; ++i)
+ Iters[i].find(Start);
+ else
+ for (unsigned i = 0, e = Iters.size(); i != e; ++i)
+ Iters[i].advanceTo(Start);
+ PrevPos = Start;
}
- // No interference in block.
- if (!BI->First.isValid())
- return;
+ MachineFunction::const_iterator MFI = MF->getBlockNumbered(MBBNum);
+ BlockInterference *BI = &Blocks[MBBNum];
+ for (;;) {
+ BI->Tag = Tag;
+ BI->First = BI->Last = SlotIndex();
+
+ // Check for first interference.
+ for (unsigned i = 0, e = Iters.size(); i != e; ++i) {
+ Iter &I = Iters[i];
+ if (!I.valid())
+ continue;
+ SlotIndex StartI = I.start();
+ if (StartI >= Stop)
+ continue;
+ if (!BI->First.isValid() || StartI < BI->First)
+ BI->First = StartI;
+ }
+
+ PrevPos = Stop;
+ if (BI->First.isValid())
+ break;
- // Check for last interference.
+ // No interference in this block? Go ahead and precompute the next block.
+ if (++MFI == MF->end())
+ return;
+ MBBNum = MFI->getNumber();
+ BI = &Blocks[MBBNum];
+ if (BI->Tag == Tag)
+ return;
+ tie(Start, Stop) = Indexes->getMBBRange(MBBNum);
+ }
+
+ // Check for last interference in block.
for (unsigned i = 0, e = Iters.size(); i != e; ++i) {
Iter &I = Iters[i];
if (!I.valid() || I.start() >= Stop)
continue;
I.advanceTo(Stop);
- if (!I.valid() || I.start() >= Stop)
+ bool Backup = !I.valid() || I.start() >= Stop;
+ if (Backup)
--I;
SlotIndex StopI = I.stop();
if (!BI->Last.isValid() || StopI > BI->Last)
BI->Last = StopI;
+ if (Backup)
+ ++I;
}
- PrevPos = Stop;
}