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Optimize HybridAllocator (#2637)

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* Store constant `Operand`s in the `LocalInfo`

Since the spill slot and register assigned is fixed, we can just store
the `Operand` reference in the `LocalInfo` struct. This allows skipping
hitting the intern-table for a look up.

* Skip `Uses`/`Assignments` management

Since the `HybridAllocator` is the last pass and we do not care about
uses/assignments we can skip managing that when setting destinations or
sources.

* Make `GetLocalInfo` inlineable

Also fix a possible issue where with numbered locals. See or-assignment
operator in `SetVisited(local)` before patch.

* Do not run `BlockPlacement` in LCQ

With the host mapped memory manager, there is a lot less cold code to
split from hot code. So disabling this in LCQ gives some extra
throughput - where we need it.

* Address Mou-Ikkai's feedback

* Apply suggestions from code review

Co-authored-by: VocalFan <45863583+Mou-Ikkai@users.noreply.github.com>

* Move check to an assert

Co-authored-by: VocalFan <45863583+Mou-Ikkai@users.noreply.github.com>
This commit is contained in:
FICTURE7 2021-09-29 03:38:37 +04:00 • committed by GitHub
parent 1ae690ba2f
commit 312be74861
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4 changed files with 85 additions and 83 deletions
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16
ARMeilleure/IntermediateRepresentation/Operation.cs
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@ -53,8 +53,8 @@ namespace ARMeilleure.IntermediateRepresentation
public int DestinationsCount => _data->DestinationsCount;
public int SourcesCount => _data->SourcesCount;
private Span<Operand> Destinations => new(_data->Destinations, _data->DestinationsCount);
private Span<Operand> Sources => new(_data->Sources, _data->SourcesCount);
internal Span<Operand> DestinationsUnsafe => new(_data->Destinations, _data->DestinationsCount);
internal Span<Operand> SourcesUnsafe => new(_data->Sources, _data->SourcesCount);
public PhiOperation AsPhi()
{
@ -65,17 +65,17 @@ namespace ARMeilleure.IntermediateRepresentation
public Operand GetDestination(int index)
{
return Destinations[index];
return DestinationsUnsafe[index];
}
public Operand GetSource(int index)
{
return Sources[index];
return SourcesUnsafe[index];
}
public void SetDestination(int index, Operand dest)
{
ref Operand curDest = ref Destinations[index];
ref Operand curDest = ref DestinationsUnsafe[index];
RemoveAssignment(curDest);
AddAssignment(dest);
@ -85,7 +85,7 @@ namespace ARMeilleure.IntermediateRepresentation
public void SetSource(int index, Operand src)
{
ref Operand curSrc = ref Sources[index];
ref Operand curSrc = ref SourcesUnsafe[index];
RemoveUse(curSrc);
AddUse(src);
@ -274,8 +274,8 @@ namespace ARMeilleure.IntermediateRepresentation
EnsureCapacity(ref result._data->Destinations, ref result._data->DestinationsCount, destCount);
EnsureCapacity(ref result._data->Sources, ref result._data->SourcesCount, srcCount);
result.Destinations.Clear();
result.Sources.Clear();
result.DestinationsUnsafe.Clear();
result.SourcesUnsafe.Clear();
return result;
}