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Replace LinkedList by IntrusiveList to avoid allocations on JIT (#931)

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* Replace LinkedList by IntrusiveList to avoid allocations on JIT

* Fix wrong replacements
This commit is contained in:
gdkchan 2020-02-17 18:30:54 -03:00 • committed by GitHub
parent e9a37ca6a8
commit e5f78fb1d4
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18 changed files with 365 additions and 198 deletions
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24
ARMeilleure/Translation/ControlFlowGraph.cs
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@ -9,13 +9,13 @@ namespace ARMeilleure.Translation
{
public BasicBlock Entry { get; }
public LinkedList<BasicBlock> Blocks { get; }
public IntrusiveList<BasicBlock> Blocks { get; }
public BasicBlock[] PostOrderBlocks { get; }
public int[] PostOrderMap { get; }
public ControlFlowGraph(BasicBlock entry, LinkedList<BasicBlock> blocks)
public ControlFlowGraph(BasicBlock entry, IntrusiveList<BasicBlock> blocks)
{
Entry = entry;
Blocks = blocks;
@ -57,7 +57,7 @@ namespace ARMeilleure.Translation
}
}
private void RemoveUnreachableBlocks(LinkedList<BasicBlock> blocks)
private void RemoveUnreachableBlocks(IntrusiveList<BasicBlock> blocks)
{
HashSet<BasicBlock> visited = new HashSet<BasicBlock>();
@ -87,25 +87,23 @@ namespace ARMeilleure.Translation
// Remove unreachable blocks and renumber.
int index = 0;
for (LinkedListNode<BasicBlock> node = blocks.First; node != null;)
for (BasicBlock block = blocks.First; block != null;)
{
LinkedListNode<BasicBlock> nextNode = node.Next;
BasicBlock block = node.Value;
BasicBlock nextBlock = block.ListNext;
if (!visited.Contains(block))
{
block.Next = null;
block.Next = null;
block.Branch = null;
blocks.Remove(node);
blocks.Remove(block);
}
else
{
block.Index = index++;
}
node = nextNode;
block = nextBlock;
}
}
}
@ -130,7 +128,7 @@ namespace ARMeilleure.Translation
}
// Insert the new block on the list of blocks.
BasicBlock succPrev = successor.Node.Previous?.Value;
BasicBlock succPrev = successor.ListPrevious;
if (succPrev != null && succPrev != predecessor && succPrev.Next == successor)
{
@ -145,12 +143,12 @@ namespace ARMeilleure.Translation
splitBlock2.Operations.AddLast(new Operation(Instruction.Branch, null));
Blocks.AddBefore(successor.Node, splitBlock2);
Blocks.AddBefore(successor, splitBlock2);
}
splitBlock.Next = successor;
Blocks.AddBefore(successor.Node, splitBlock);
Blocks.AddBefore(successor, splitBlock);
return splitBlock;
}