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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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GPG key ID: 4AEE18F83AFDEB23
18 changed files with 365 additions and 198 deletions
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16
ARMeilleure/CodeGen/Optimizations/Optimizer.cs
View file

@ -16,17 +16,17 @@ namespace ARMeilleure.CodeGen.Optimizations
{
modified = false;
foreach (BasicBlock block in cfg.Blocks)
for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext)
{
LinkedListNode<Node> node = block.Operations.First;
Node node = block.Operations.First;
while (node != null)
{
LinkedListNode<Node> nextNode = node.Next;
Node nextNode = node.ListNext;
bool isUnused = IsUnused(node.Value);
bool isUnused = IsUnused(node);
if (!(node.Value is Operation operation) || isUnused)
if (!(node is Operation operation) || isUnused)
{
if (isUnused)
{
@ -80,13 +80,11 @@ namespace ARMeilleure.CodeGen.Optimizations
}
}
private static void RemoveNode(BasicBlock block, LinkedListNode<Node> llNode)
private static void RemoveNode(BasicBlock block, Node node)
{
// Remove a node from the nodes list, and also remove itself
// from all the use lists on the operands that this node uses.
block.Operations.Remove(llNode);
Node node = llNode.Value;
block.Operations.Remove(node);
for (int index = 0; index < node.SourcesCount; index++)
{

12
ARMeilleure/CodeGen/RegisterAllocators/HybridAllocator.cs
View file

@ -95,7 +95,7 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
bool hasCall = false;
foreach (Node node in block.Operations)
for (Node node = block.Operations.First; node != null; node = node.ListNext)
{
if (node is Operation operation && operation.Instruction == Instruction.Call)
{
@ -176,10 +176,8 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
intLocalFreeRegisters &= ~(intSpillTempRegisters | intCallerSavedRegisters);
vecLocalFreeRegisters &= ~(vecSpillTempRegisters | vecCallerSavedRegisters);
for (LinkedListNode<Node> llNode = block.Operations.First; llNode != null; llNode = llNode.Next)
for (Node node = block.Operations.First; node != null; node = node.ListNext)
{
Node node = llNode.Value;
int intLocalUse = 0;
int vecLocalUse = 0;
@ -232,7 +230,7 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
Operation fillOp = new Operation(Instruction.Fill, temp, Const(info.SpillOffset));
block.Operations.AddBefore(llNode, fillOp);
block.Operations.AddBefore(node, fillOp);
}
}
@ -306,7 +304,9 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
Operation spillOp = new Operation(Instruction.Spill, null, Const(info.SpillOffset), temp);
llNode = block.Operations.AddAfter(llNode, spillOp);
block.Operations.AddAfter(node, spillOp);
node = spillOp;
}
}

52
ARMeilleure/CodeGen/RegisterAllocators/LinearScanAllocator.cs
View file

@ -28,7 +28,7 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
private LiveInterval[] _parentIntervals;
private List<LinkedListNode<Node>> _operationNodes;
private List<(IntrusiveList<Node>, Node)> _operationNodes;
private int _operationsCount;
@ -583,15 +583,19 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
int splitPosition = kv.Key;
LinkedListNode<Node> node = GetOperationNode(splitPosition);
(IntrusiveList<Node> nodes, Node node) = GetOperationNode(splitPosition);
Operation[] sequence = copyResolver.Sequence();
node = node.List.AddBefore(node, sequence[0]);
nodes.AddBefore(node, sequence[0]);
node = sequence[0];
for (int index = 1; index < sequence.Length; index++)
{
node = node.List.AddAfter(node, sequence[index]);
nodes.AddAfter(node, sequence[index]);
node = sequence[index];
}
}
}
@ -605,10 +609,8 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
return block.Index >= blocksCount;
}
for (LinkedListNode<BasicBlock> node = cfg.Blocks.First; node != null; node = node.Next)
for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext)
{
BasicBlock block = node.Value;
if (IsSplitEdgeBlock(block))
{
continue;
@ -666,13 +668,17 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
}
else if (successor.Predecessors.Count == 1)
{
LinkedListNode<Node> prependNode = successor.Operations.AddFirst(sequence[0]);
successor.Operations.AddFirst(sequence[0]);
Node prependNode = sequence[0];
for (int index = 1; index < sequence.Length; index++)
{
Operation operation = sequence[index];
prependNode = successor.Operations.AddAfter(prependNode, operation);
successor.Operations.AddAfter(prependNode, operation);
prependNode = operation;
}
}
else
@ -695,7 +701,7 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
foreach (int usePosition in current.UsePositions())
{
Node operation = GetOperationNode(usePosition).Value;
(_, Node operation) = GetOperationNode(usePosition);
for (int index = 0; index < operation.SourcesCount; index++)
{
@ -729,14 +735,14 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
interval.Local.Type);
}
private LinkedListNode<Node> GetOperationNode(int position)
private (IntrusiveList<Node>, Node) GetOperationNode(int position)
{
return _operationNodes[position / InstructionGap];
}
private void NumberLocals(ControlFlowGraph cfg)
{
_operationNodes = new List<LinkedListNode<Node>>();
_operationNodes = new List<(IntrusiveList<Node>, Node)>();
_intervals = new List<LiveInterval>();
@ -754,13 +760,11 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
{
BasicBlock block = cfg.PostOrderBlocks[index];
for (LinkedListNode<Node> node = block.Operations.First; node != null; node = node.Next)
for (Node node = block.Operations.First; node != null; node = node.ListNext)
{
_operationNodes.Add(node);
_operationNodes.Add((block.Operations, node));
Node operation = node.Value;
foreach (Operand dest in Destinations(operation))
foreach (Operand dest in Destinations(node))
{
if (dest.Kind == OperandKind.LocalVariable && visited.Add(dest))
{
@ -776,7 +780,7 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
if (block.Operations.Count == 0)
{
// Pretend we have a dummy instruction on the empty block.
_operationNodes.Add(null);
_operationNodes.Add((null, null));
_operationsCount += InstructionGap;
}
@ -795,12 +799,12 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
BitMap[] blkLiveKill = new BitMap[cfg.Blocks.Count];
// Compute local live sets.
foreach (BasicBlock block in cfg.Blocks)
for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext)
{
BitMap liveGen = new BitMap(mapSize);
BitMap liveKill = new BitMap(mapSize);
foreach (Node node in block.Operations)
for (Node node = block.Operations.First; node != null; node = node.ListNext)
{
foreach (Operand source in Sources(node))
{
@ -979,13 +983,13 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
private static IEnumerable<Node> BottomOperations(BasicBlock block)
{
LinkedListNode<Node> node = block.Operations.Last;
Node node = block.Operations.Last;
while (node != null && !(node.Value is PhiNode))
while (node != null && !(node is PhiNode))
{
yield return node.Value;
yield return node;
node = node.Previous;
node = node.ListPrevious;
}
}

4
ARMeilleure/CodeGen/X86/CodeGenerator.cs
View file

@ -157,11 +157,11 @@ namespace ARMeilleure.CodeGen.X86
UnwindInfo unwindInfo = WritePrologue(context);
foreach (BasicBlock block in cfg.Blocks)
for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext)
{
context.EnterBlock(block);
foreach (Node node in block.Operations)
for (Node node = block.Operations.First; node != null; node = node.ListNext)
{
if (node is Operation operation)
{

146
ARMeilleure/CodeGen/X86/PreAllocator.cs
View file

@ -8,8 +8,6 @@ using static ARMeilleure.IntermediateRepresentation.OperandHelper;
namespace ARMeilleure.CodeGen.X86
{
using LLNode = LinkedListNode<Node>;
static class PreAllocator
{
public static void RunPass(CompilerContext cctx, StackAllocator stackAlloc, out int maxCallArgs)
@ -20,24 +18,24 @@ namespace ARMeilleure.CodeGen.X86
Operand[] preservedArgs = new Operand[CallingConvention.GetArgumentsOnRegsCount()];
foreach (BasicBlock block in cctx.Cfg.Blocks)
for (BasicBlock block = cctx.Cfg.Blocks.First; block != null; block = block.ListNext)
{
LLNode nextNode;
Node nextNode;
for (LLNode node = block.Operations.First; node != null; node = nextNode)
for (Node node = block.Operations.First; node != null; node = nextNode)
{
nextNode = node.Next;
nextNode = node.ListNext;
if (!(node.Value is Operation operation))
if (!(node is Operation operation))
{
continue;
}
HandleConstantCopy(node, operation);
HandleConstantCopy(block.Operations, node, operation);
HandleSameDestSrc1Copy(node, operation);
HandleSameDestSrc1Copy(block.Operations, node, operation);
HandleFixedRegisterCopy(node, operation);
HandleFixedRegisterCopy(block.Operations, node, operation);
switch (operation.Instruction)
{
@ -62,51 +60,51 @@ namespace ARMeilleure.CodeGen.X86
// being called, as mandated by the ABI.
if (callConv == CallConvName.Windows)
{
node = HandleCallWindowsAbi(stackAlloc, node, operation);
node = HandleCallWindowsAbi(block.Operations, stackAlloc, node, operation);
}
else /* if (callConv == CallConvName.SystemV) */
{
node = HandleCallSystemVAbi(node, operation);
node = HandleCallSystemVAbi(block.Operations, node, operation);
}
break;
case Instruction.ConvertToFPUI:
HandleConvertToFPUI(node, operation);
HandleConvertToFPUI(block.Operations, node, operation);
break;
case Instruction.LoadArgument:
if (callConv == CallConvName.Windows)
{
HandleLoadArgumentWindowsAbi(cctx, node, preservedArgs, operation);
HandleLoadArgumentWindowsAbi(cctx, block.Operations, node, preservedArgs, operation);
}
else /* if (callConv == CallConvName.SystemV) */
{
HandleLoadArgumentSystemVAbi(cctx, node, preservedArgs, operation);
HandleLoadArgumentSystemVAbi(cctx, block.Operations, node, preservedArgs, operation);
}
break;
case Instruction.Negate:
if (!operation.GetSource(0).Type.IsInteger())
{
node = HandleNegate(node, operation);
node = HandleNegate(block.Operations, node, operation);
}
break;
case Instruction.Return:
if (callConv == CallConvName.Windows)
{
HandleReturnWindowsAbi(cctx, node, preservedArgs, operation);
HandleReturnWindowsAbi(cctx, block.Operations, node, preservedArgs, operation);
}
else /* if (callConv == CallConvName.SystemV) */
{
HandleReturnSystemVAbi(node, operation);
HandleReturnSystemVAbi(block.Operations, node, operation);
}
break;
case Instruction.VectorInsert8:
if (!HardwareCapabilities.SupportsSse41)
{
node = HandleVectorInsert8(node, operation);
node = HandleVectorInsert8(block.Operations, node, operation);
}
break;
}
@ -114,7 +112,7 @@ namespace ARMeilleure.CodeGen.X86
}
}
private static void HandleConstantCopy(LLNode node, Operation operation)
private static void HandleConstantCopy(IntrusiveList<Node> nodes, Node node, Operation operation)
{
if (operation.SourcesCount == 0 || IsIntrinsic(operation.Instruction))
{
@ -135,7 +133,7 @@ namespace ARMeilleure.CodeGen.X86
// - Insert a copy with the constant value (as integer) to a GPR.
// - Insert a copy from the GPR to a XMM register.
// - Replace the constant use with the XMM register.
src1 = AddXmmCopy(node, src1);
src1 = AddXmmCopy(nodes, node, src1);
operation.SetSource(0, src1);
}
@ -164,7 +162,7 @@ namespace ARMeilleure.CodeGen.X86
if (src1.Kind == OperandKind.Constant)
{
src1 = AddCopy(node, src1);
src1 = AddCopy(nodes, node, src1);
operation.SetSource(0, src1);
}
@ -182,25 +180,23 @@ namespace ARMeilleure.CodeGen.X86
{
if (!src2.Type.IsInteger())
{
src2 = AddXmmCopy(node, src2);
src2 = AddXmmCopy(nodes, node, src2);
operation.SetSource(1, src2);
}
else if (!HasConstSrc2(inst) || IsLongConst(src2))
{
src2 = AddCopy(node, src2);
src2 = AddCopy(nodes, node, src2);
operation.SetSource(1, src2);
}
}
}
private static LLNode HandleFixedRegisterCopy(LLNode node, Operation operation)
private static Node HandleFixedRegisterCopy(IntrusiveList<Node> nodes, Node node, Operation operation)
{
Operand dest = operation.Destination;
LinkedList<Node> nodes = node.List;
switch (operation.Instruction)
{
case Instruction.CompareAndSwap128:
@ -359,7 +355,7 @@ namespace ARMeilleure.CodeGen.X86
return node;
}
private static LLNode HandleSameDestSrc1Copy(LLNode node, Operation operation)
private static Node HandleSameDestSrc1Copy(IntrusiveList<Node> nodes, Node node, Operation operation)
{
if (operation.Destination == null || operation.SourcesCount == 0)
{
@ -371,8 +367,6 @@ namespace ARMeilleure.CodeGen.X86
Operand dest = operation.Destination;
Operand src1 = operation.GetSource(0);
LinkedList<Node> nodes = node.List;
// The multiply instruction (that maps to IMUL) is somewhat special, it has
// a three operand form where the second source is a immediate value.
bool threeOperandForm = inst == Instruction.Multiply && operation.GetSource(1).Kind == OperandKind.Constant;
@ -441,7 +435,7 @@ namespace ARMeilleure.CodeGen.X86
return node;
}
private static LLNode HandleConvertToFPUI(LLNode node, Operation operation)
private static Node HandleConvertToFPUI(IntrusiveList<Node> nodes, Node node, Operation operation)
{
// Unsigned integer to FP conversions are not supported on X86.
// We need to turn them into signed integer to FP conversions, and
@ -451,9 +445,7 @@ namespace ARMeilleure.CodeGen.X86
Debug.Assert(source.Type.IsInteger(), $"Invalid source type \"{source.Type}\".");
LinkedList<Node> nodes = node.List;
LLNode currentNode = node;
Node currentNode = node;
if (source.Type == OperandType.I32)
{
@ -494,12 +486,12 @@ namespace ARMeilleure.CodeGen.X86
node = nodes.AddAfter(node, new Operation(Instruction.Add, dest, dest, lsbF));
}
Delete(currentNode, operation);
Delete(nodes, currentNode, operation);
return node;
}
private static LLNode HandleNegate(LLNode node, Operation operation)
private static Node HandleNegate(IntrusiveList<Node> nodes, Node node, Operation operation)
{
// There's no SSE FP negate instruction, so we need to transform that into
// a XOR of the value to be negated with a mask with the highest bit set.
@ -510,9 +502,7 @@ namespace ARMeilleure.CodeGen.X86
Debug.Assert(dest.Type == OperandType.FP32 ||
dest.Type == OperandType.FP64, $"Invalid destination type \"{dest.Type}\".");
LinkedList<Node> nodes = node.List;
LLNode currentNode = node;
Node currentNode = node;
Operand res = Local(dest.Type);
@ -531,12 +521,12 @@ namespace ARMeilleure.CodeGen.X86
node = nodes.AddAfter(node, new Operation(Instruction.Copy, dest, res));
Delete(currentNode, operation);
Delete(nodes, currentNode, operation);
return node;
}
private static LLNode HandleVectorInsert8(LLNode node, Operation operation)
private static Node HandleVectorInsert8(IntrusiveList<Node> nodes, Node node, Operation operation)
{
// Handle vector insertion, when SSE 4.1 is not supported.
Operand dest = operation.Destination;
@ -550,9 +540,7 @@ namespace ARMeilleure.CodeGen.X86
Debug.Assert(index < 16);
LinkedList<Node> nodes = node.List;
LLNode currentNode = node;
Node currentNode = node;
Operand temp1 = Local(OperandType.I32);
Operand temp2 = Local(OperandType.I32);
@ -580,17 +568,15 @@ namespace ARMeilleure.CodeGen.X86
node = nodes.AddAfter(node, vinsOp);
Delete(currentNode, operation);
Delete(nodes, currentNode, operation);
return node;
}
private static LLNode HandleCallWindowsAbi(StackAllocator stackAlloc, LLNode node, Operation operation)
private static Node HandleCallWindowsAbi(IntrusiveList<Node> nodes, StackAllocator stackAlloc, Node node, Operation operation)
{
Operand dest = operation.Destination;
LinkedList<Node> nodes = node.List;
// Handle struct arguments.
int retArgs = 0;
@ -661,7 +647,7 @@ namespace ARMeilleure.CodeGen.X86
Operation storeOp = new Operation(Instruction.Store, null, stackAddr, source);
HandleConstantCopy(nodes.AddBefore(node, storeOp), storeOp);
HandleConstantCopy(nodes, nodes.AddBefore(node, storeOp), storeOp);
operation.SetSource(index, stackAddr);
}
@ -687,7 +673,7 @@ namespace ARMeilleure.CodeGen.X86
Operation copyOp = new Operation(Instruction.Copy, argReg, source);
HandleConstantCopy(nodes.AddBefore(node, copyOp), copyOp);
HandleConstantCopy(nodes, nodes.AddBefore(node, copyOp), copyOp);
sources[1 + retArgs + index] = argReg;
}
@ -702,7 +688,7 @@ namespace ARMeilleure.CodeGen.X86
Operation spillOp = new Operation(Instruction.SpillArg, null, offset, source);
HandleConstantCopy(nodes.AddBefore(node, spillOp), spillOp);
HandleConstantCopy(nodes, nodes.AddBefore(node, spillOp), spillOp);
}
if (dest != null)
@ -738,15 +724,14 @@ namespace ARMeilleure.CodeGen.X86
return node;
}
private static LLNode HandleCallSystemVAbi(LLNode node, Operation operation)
private static Node HandleCallSystemVAbi(IntrusiveList<Node> nodes, Node node, Operation operation)
{
Operand dest = operation.Destination;
LinkedList<Node> nodes = node.List;
List<Operand> sources = new List<Operand>();
sources.Add(operation.GetSource(0));
List<Operand> sources = new List<Operand>
{
operation.GetSource(0)
};
int argsCount = operation.SourcesCount - 1;
@ -797,7 +782,7 @@ namespace ARMeilleure.CodeGen.X86
Operation copyOp = new Operation(Instruction.Copy, argReg, source);
HandleConstantCopy(nodes.AddBefore(node, copyOp), copyOp);
HandleConstantCopy(nodes, nodes.AddBefore(node, copyOp), copyOp);
sources.Add(argReg);
}
@ -807,7 +792,7 @@ namespace ARMeilleure.CodeGen.X86
Operation spillOp = new Operation(Instruction.SpillArg, null, offset, source);
HandleConstantCopy(nodes.AddBefore(node, spillOp), spillOp);
HandleConstantCopy(nodes, nodes.AddBefore(node, spillOp), spillOp);
stackOffset += source.Type.GetSizeInBytes();
}
@ -846,7 +831,8 @@ namespace ARMeilleure.CodeGen.X86
private static void HandleLoadArgumentWindowsAbi(
CompilerContext cctx,
LLNode node,
IntrusiveList<Node> nodes,
Node node,
Operand[] preservedArgs,
Operation operation)
{
@ -896,9 +882,9 @@ namespace ARMeilleure.CodeGen.X86
? Instruction.Load
: Instruction.Copy, dest, preservedArgs[index]);
node.List.AddBefore(node, argCopyOp);
nodes.AddBefore(node, argCopyOp);
Delete(node, operation);
Delete(nodes, node, operation);
}
else
{
@ -908,7 +894,8 @@ namespace ARMeilleure.CodeGen.X86
private static void HandleLoadArgumentSystemVAbi(
CompilerContext cctx,
LLNode node,
IntrusiveList<Node> nodes,
Node node,
Operand[] preservedArgs,
Operation operation)
{
@ -994,9 +981,9 @@ namespace ARMeilleure.CodeGen.X86
Operation argCopyOp = new Operation(Instruction.Copy, dest, preservedArgs[index]);
node.List.AddBefore(node, argCopyOp);
nodes.AddBefore(node, argCopyOp);
Delete(node, operation);
Delete(nodes, node, operation);
}
else
{
@ -1006,7 +993,8 @@ namespace ARMeilleure.CodeGen.X86
private static void HandleReturnWindowsAbi(
CompilerContext cctx,
LLNode node,
IntrusiveList<Node> nodes,
Node node,
Operand[] preservedArgs,
Operation operation)
{
@ -1049,19 +1037,19 @@ namespace ARMeilleure.CodeGen.X86
{
Operation retStoreOp = new Operation(Instruction.Store, null, retReg, source);
node.List.AddBefore(node, retStoreOp);
nodes.AddBefore(node, retStoreOp);
}
else
{
Operation retCopyOp = new Operation(Instruction.Copy, retReg, source);
node.List.AddBefore(node, retCopyOp);
nodes.AddBefore(node, retCopyOp);
}
operation.SetSources(new Operand[0]);
}
private static void HandleReturnSystemVAbi(LLNode node, Operation operation)
private static void HandleReturnSystemVAbi(IntrusiveList<Node> nodes, Node node, Operation operation)
{
if (operation.SourcesCount == 0)
{
@ -1075,8 +1063,8 @@ namespace ARMeilleure.CodeGen.X86
Operand retLReg = Gpr(CallingConvention.GetIntReturnRegister(), OperandType.I64);
Operand retHReg = Gpr(CallingConvention.GetIntReturnRegisterHigh(), OperandType.I64);
node.List.AddBefore(node, new Operation(Instruction.VectorExtract, retLReg, source, Const(0)));
node.List.AddBefore(node, new Operation(Instruction.VectorExtract, retHReg, source, Const(1)));
nodes.AddBefore(node, new Operation(Instruction.VectorExtract, retLReg, source, Const(0)));
nodes.AddBefore(node, new Operation(Instruction.VectorExtract, retHReg, source, Const(1)));
}
else
{
@ -1086,30 +1074,30 @@ namespace ARMeilleure.CodeGen.X86
Operation retCopyOp = new Operation(Instruction.Copy, retReg, source);
node.List.AddBefore(node, retCopyOp);
nodes.AddBefore(node, retCopyOp);
}
}
private static Operand AddXmmCopy(LLNode node, Operand source)
private static Operand AddXmmCopy(IntrusiveList<Node> nodes, Node node, Operand source)
{
Operand temp = Local(source.Type);
Operand intConst = AddCopy(node, GetIntConst(source));
Operand intConst = AddCopy(nodes, node, GetIntConst(source));
Operation copyOp = new Operation(Instruction.VectorCreateScalar, temp, intConst);
node.List.AddBefore(node, copyOp);
nodes.AddBefore(node, copyOp);
return temp;
}
private static Operand AddCopy(LLNode node, Operand source)
private static Operand AddCopy(IntrusiveList<Node> nodes, Node node, Operand source)
{
Operand temp = Local(source.Type);
Operation copyOp = new Operation(Instruction.Copy, temp, source);
node.List.AddBefore(node, copyOp);
nodes.AddBefore(node, copyOp);
return temp;
}
@ -1142,7 +1130,7 @@ namespace ARMeilleure.CodeGen.X86
return value == (int)value;
}
private static void Delete(LLNode node, Operation operation)
private static void Delete(IntrusiveList<Node> nodes, Node node, Operation operation)
{
operation.Destination = null;
@ -1151,7 +1139,7 @@ namespace ARMeilleure.CodeGen.X86
operation.SetSource(index, null);
}
node.List.Remove(node);
nodes.Remove(node);
}
private static Operand Gpr(X86Register register, OperandType type)

4
ARMeilleure/Diagnostics/IRDumper.cs
View file

@ -35,7 +35,7 @@ namespace ARMeilleure.Diagnostics
IncreaseIndentation();
foreach (BasicBlock block in cfg.Blocks)
for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext)
{
string blockName = GetBlockName(block);
@ -55,7 +55,7 @@ namespace ARMeilleure.Diagnostics
IncreaseIndentation();
foreach (Node node in block.Operations)
for (Node node = block.Operations.First; node != null; node = node.ListNext)
{
string[] sources = new string[node.SourcesCount];

11
ARMeilleure/IntermediateRepresentation/BasicBlock.cs
View file

@ -2,13 +2,14 @@ using System.Collections.Generic;
namespace ARMeilleure.IntermediateRepresentation
{
class BasicBlock
class BasicBlock : IIntrusiveListNode<BasicBlock>
{
public int Index { get; set; }
public LinkedListNode<BasicBlock> Node { get; set; }
public BasicBlock ListPrevious { get; set; }
public BasicBlock ListNext { get; set; }
public LinkedList<Node> Operations { get; }
public IntrusiveList<Node> Operations { get; }
private BasicBlock _next;
private BasicBlock _branch;
@ -33,7 +34,7 @@ namespace ARMeilleure.IntermediateRepresentation
public BasicBlock()
{
Operations = new LinkedList<Node>();
Operations = new IntrusiveList<Node>();
Predecessors = new List<BasicBlock>();
@ -77,7 +78,7 @@ namespace ARMeilleure.IntermediateRepresentation
public Node GetLastOp()
{
return Operations.Last?.Value;
return Operations.Last;
}
}
}

8
ARMeilleure/IntermediateRepresentation/IIntrusiveListNode.cs Normal file
View file

@ -0,0 +1,8 @@
namespace ARMeilleure.IntermediateRepresentation
{
interface IIntrusiveListNode<T> where T : class
{
T ListPrevious { get; set; }
T ListNext { get; set; }
}
}

178
ARMeilleure/IntermediateRepresentation/IntrusiveList.cs Normal file
View file

@ -0,0 +1,178 @@
using System.Diagnostics;
using System.Runtime.CompilerServices;
namespace ARMeilleure.IntermediateRepresentation
{
/// <summary>
/// Represents a efficient linked list that stores the pointer on the object directly and does not allocate.
/// </summary>
/// <typeparam name="T">Type of the list items</typeparam>
class IntrusiveList<T> where T : class, IIntrusiveListNode<T>
{
/// <summary>
/// First item of the list, or null if empty.
/// </summary>
public T First { get; private set; }
/// <summary>
/// Last item of the list, or null if empty.
/// </summary>
public T Last { get; private set; }
/// <summary>
/// Total number of items on the list.
/// </summary>
public int Count { get; private set; }
/// <summary>
/// Adds a item as the first item of the list.
/// </summary>
/// <param name="newNode">Item to be added</param>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void AddFirst(T newNode)
{
if (First != null)
{
AddBefore(First, newNode);
}
else
{
Debug.Assert(newNode.ListPrevious == null);
Debug.Assert(newNode.ListNext == null);
Debug.Assert(Last == null);
First = newNode;
Last = newNode;
Debug.Assert(Count == 0);
Count = 1;
}
}
/// <summary>
/// Adds a item as the last item of the list.
/// </summary>
/// <param name="newNode">Item to be added</param>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void AddLast(T newNode)
{
if (Last != null)
{
AddAfter(Last, newNode);
}
else
{
Debug.Assert(newNode.ListPrevious == null);
Debug.Assert(newNode.ListNext == null);
Debug.Assert(First == null);
First = newNode;
Last = newNode;
Debug.Assert(Count == 0);
Count = 1;
}
}
/// <summary>
/// Adds a item before a existing item on the list.
/// </summary>
/// <param name="node">Item on the list that will succeed the new item</param>
/// <param name="newNode">Item to be added</param>
/// <returns>New item</returns>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public T AddBefore(T node, T newNode)
{
Debug.Assert(newNode.ListPrevious == null);
Debug.Assert(newNode.ListNext == null);
newNode.ListPrevious = node.ListPrevious;
newNode.ListNext = node;
node.ListPrevious = newNode;
if (newNode.ListPrevious != null)
{
newNode.ListPrevious.ListNext = newNode;
}
if (First == node)
{
First = newNode;
}
Count++;
return newNode;
}
/// <summary>
/// Adds a item after a existing item on the list.
/// </summary>
/// <param name="node">Item on the list that will preceed the new item</param>
/// <param name="newNode">Item to be added</param>
/// <returns>New item</returns>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public T AddAfter(T node, T newNode)
{
Debug.Assert(newNode.ListPrevious == null);
Debug.Assert(newNode.ListNext == null);
newNode.ListPrevious = node;
newNode.ListNext = node.ListNext;
node.ListNext = newNode;
if (newNode.ListNext != null)
{
newNode.ListNext.ListPrevious = newNode;
}
if (Last == node)
{
Last = newNode;
}
Count++;
return newNode;
}
/// <summary>
/// Removes a item from the list.
/// </summary>
/// <param name="node">The item to be removed</param>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Remove(T node)
{
if (node.ListPrevious != null)
{
node.ListPrevious.ListNext = node.ListNext;
}
else
{
Debug.Assert(First == node);
First = node.ListNext;
}
if (node.ListNext != null)
{
node.ListNext.ListPrevious = node.ListPrevious;
}
else
{
Debug.Assert(Last == node);
Last = node.ListPrevious;
}
node.ListPrevious = null;
node.ListNext = null;
Count--;
}
}
}

33
ARMeilleure/IntermediateRepresentation/Node.cs
View file

@ -1,10 +1,12 @@
using System;
using System.Collections.Generic;
namespace ARMeilleure.IntermediateRepresentation
{
class Node
class Node : IIntrusiveListNode<Node>
{
public Node ListPrevious { get; set; }
public Node ListNext { get; set; }
public Operand Destination
{
get
@ -27,9 +29,6 @@ namespace ARMeilleure.IntermediateRepresentation
private Operand[] _destinations;
private Operand[] _sources;
private LinkedListNode<Node>[] _asgUseNodes;
private LinkedListNode<Node>[] _srcUseNodes;
public int DestinationsCount => _destinations.Length;
public int SourcesCount => _sources.Length;
@ -38,8 +37,6 @@ namespace ARMeilleure.IntermediateRepresentation
Destination = destination;
_sources = new Operand[sourcesCount];
_srcUseNodes = new LinkedListNode<Node>[sourcesCount];
}
public Node(Operand[] destinations, int sourcesCount)
@ -47,8 +44,6 @@ namespace ARMeilleure.IntermediateRepresentation
SetDestinations(destinations ?? throw new ArgumentNullException(nameof(destinations)));
_sources = new Operand[sourcesCount];
_srcUseNodes = new LinkedListNode<Node>[sourcesCount];
}
public Operand GetDestination(int index)
@ -67,12 +62,12 @@ namespace ARMeilleure.IntermediateRepresentation
if (oldOp != null && oldOp.Kind == OperandKind.LocalVariable)
{
oldOp.Assignments.Remove(_asgUseNodes[index]);
oldOp.Assignments.Remove(this);
}
if (destination != null && destination.Kind == OperandKind.LocalVariable)
{
_asgUseNodes[index] = destination.Assignments.AddLast(this);
destination.Assignments.Add(this);
}
_destinations[index] = destination;
@ -84,12 +79,12 @@ namespace ARMeilleure.IntermediateRepresentation
if (oldOp != null && oldOp.Kind == OperandKind.LocalVariable)
{
oldOp.Uses.Remove(_srcUseNodes[index]);
oldOp.Uses.Remove(this);
}
if (source != null && source.Kind == OperandKind.LocalVariable)
{
_srcUseNodes[index] = source.Uses.AddLast(this);
source.Uses.Add(this);
}
_sources[index] = source;
@ -105,7 +100,7 @@ namespace ARMeilleure.IntermediateRepresentation
if (oldOp != null && oldOp.Kind == OperandKind.LocalVariable)
{
oldOp.Assignments.Remove(_asgUseNodes[index]);
oldOp.Assignments.Remove(this);
}
}
@ -116,8 +111,6 @@ namespace ARMeilleure.IntermediateRepresentation
_destinations = new Operand[destinations.Length];
}
_asgUseNodes = new LinkedListNode<Node>[destinations.Length];
for (int index = 0; index < destinations.Length; index++)
{
Operand newOp = destinations[index];
@ -126,7 +119,7 @@ namespace ARMeilleure.IntermediateRepresentation
if (newOp.Kind == OperandKind.LocalVariable)
{
_asgUseNodes[index] = newOp.Assignments.AddLast(this);
newOp.Assignments.Add(this);
}
}
}
@ -139,14 +132,12 @@ namespace ARMeilleure.IntermediateRepresentation
if (oldOp != null && oldOp.Kind == OperandKind.LocalVariable)
{
oldOp.Uses.Remove(_srcUseNodes[index]);
oldOp.Uses.Remove(this);
}
}
_sources = new Operand[sources.Length];
_srcUseNodes = new LinkedListNode<Node>[sources.Length];
for (int index = 0; index < sources.Length; index++)
{
Operand newOp = sources[index];
@ -155,7 +146,7 @@ namespace ARMeilleure.IntermediateRepresentation
if (newOp.Kind == OperandKind.LocalVariable)
{
_srcUseNodes[index] = newOp.Uses.AddLast(this);
newOp.Uses.Add(this);
}
}
}

8
ARMeilleure/IntermediateRepresentation/Operand.cs
View file

@ -11,13 +11,13 @@ namespace ARMeilleure.IntermediateRepresentation
public ulong Value { get; private set; }
public LinkedList<Node> Assignments { get; }
public LinkedList<Node> Uses { get; }
public List<Node> Assignments { get; }
public List<Node> Uses { get; }
private Operand()
{
Assignments = new LinkedList<Node>();
Uses = new LinkedList<Node>();
Assignments = new List<Node>();
Uses = new List<Node>();
}
public Operand(OperandKind kind, OperandType type = OperandType.None) : this()

22
ARMeilleure/Translation/ControlFlowGraph.cs
View file

@ -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.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;
}

2
ARMeilleure/Translation/Dominance.cs
View file

@ -71,7 +71,7 @@ namespace ARMeilleure.Translation
public static void FindDominanceFrontiers(ControlFlowGraph cfg)
{
foreach (BasicBlock block in cfg.Blocks)
for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext)
{
if (block.Predecessors.Count < 2)
{

11
ARMeilleure/Translation/EmitterContext.cs
View file

@ -12,7 +12,7 @@ namespace ARMeilleure.Translation
{
private Dictionary<Operand, BasicBlock> _irLabels;
private LinkedList<BasicBlock> _irBlocks;
private IntrusiveList<BasicBlock> _irBlocks;
private BasicBlock _irBlock;
@ -22,7 +22,7 @@ namespace ARMeilleure.Translation
{
_irLabels = new Dictionary<Operand, BasicBlock>();
_irBlocks = new LinkedList<BasicBlock>();
_irBlocks = new IntrusiveList<BasicBlock>();
_needsNewBlock = true;
}
@ -508,7 +508,8 @@ namespace ARMeilleure.Translation
if (_irLabels.TryGetValue(label, out BasicBlock nextBlock))
{
nextBlock.Index = _irBlocks.Count;
nextBlock.Node = _irBlocks.AddLast(nextBlock);
_irBlocks.AddLast(nextBlock);
NextBlock(nextBlock);
}
@ -524,7 +525,7 @@ namespace ARMeilleure.Translation
{
BasicBlock block = new BasicBlock(_irBlocks.Count);
block.Node = _irBlocks.AddLast(block);
_irBlocks.AddLast(block);
NextBlock(block);
}
@ -556,7 +557,7 @@ namespace ARMeilleure.Translation
public ControlFlowGraph GetControlFlowGraph()
{
return new ControlFlowGraph(_irBlocks.First.Value, _irBlocks);
return new ControlFlowGraph(_irBlocks.First, _irBlocks);
}
}
}

4
ARMeilleure/Translation/RegisterToLocal.cs
View file

@ -25,9 +25,9 @@ namespace ARMeilleure.Translation
return local;
}
foreach (BasicBlock block in cfg.Blocks)
for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext)
{
foreach (Node node in block.Operations)
for (Node node = block.Operations.First; node != null; node = node.ListNext)
{
Operand dest = node.Destination;

16
ARMeilleure/Translation/RegisterUsage.cs
View file

@ -74,9 +74,9 @@ namespace ARMeilleure.Translation
RegisterMask[] localInputs = new RegisterMask[cfg.Blocks.Count];
RegisterMask[] localOutputs = new RegisterMask[cfg.Blocks.Count];
foreach (BasicBlock block in cfg.Blocks)
for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext)
{
foreach (Node node in block.Operations)
for (Node node = block.Operations.First; node != null; node = node.ListNext)
{
Operation operation = node as Operation;
@ -192,13 +192,13 @@ namespace ARMeilleure.Translation
while (modified);
// Insert load and store context instructions where needed.
foreach (BasicBlock block in cfg.Blocks)
for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext)
{
bool hasContextLoad = HasContextLoad(block);
if (hasContextLoad)
{
block.Operations.RemoveFirst();
block.Operations.Remove(block.Operations.First);
}
// The only block without any predecessor should be the entry block.
@ -213,7 +213,7 @@ namespace ARMeilleure.Translation
if (hasContextStore)
{
block.Operations.RemoveLast();
block.Operations.Remove(block.Operations.Last);
}
if (EndsWithReturn(block) || hasContextStore)
@ -226,7 +226,7 @@ namespace ARMeilleure.Translation
private static bool HasContextLoad(BasicBlock block)
{
return StartsWith(block, Instruction.LoadFromContext) && block.Operations.First.Value.SourcesCount == 0;
return StartsWith(block, Instruction.LoadFromContext) && block.Operations.First.SourcesCount == 0;
}
private static bool HasContextStore(BasicBlock block)
@ -241,7 +241,7 @@ namespace ARMeilleure.Translation
return false;
}
return block.Operations.First.Value is Operation operation && operation.Instruction == inst;
return block.Operations.First is Operation operation && operation.Instruction == inst;
}
private static bool EndsWith(BasicBlock block, Instruction inst)
@ -251,7 +251,7 @@ namespace ARMeilleure.Translation
return false;
}
return block.Operations.Last.Value is Operation operation && operation.Instruction == inst;
return block.Operations.Last is Operation operation && operation.Instruction == inst;
}
private static RegisterMask GetMask(Register register)

26
ARMeilleure/Translation/SsaConstruction.cs
View file

@ -47,7 +47,7 @@ namespace ARMeilleure.Translation
{
DefMap[] globalDefs = new DefMap[cfg.Blocks.Count];
foreach (BasicBlock block in cfg.Blocks)
for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext)
{
globalDefs[block.Index] = new DefMap();
}
@ -55,11 +55,11 @@ namespace ARMeilleure.Translation
Queue<BasicBlock> dfPhiBlocks = new Queue<BasicBlock>();
// First pass, get all defs and locals uses.
foreach (BasicBlock block in cfg.Blocks)
for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext)
{
Operand[] localDefs = new Operand[RegisterConsts.TotalCount];
LinkedListNode<Node> node = block.Operations.First;
Node node = block.Operations.First;
Operand RenameLocal(Operand operand)
{
@ -75,7 +75,7 @@ namespace ARMeilleure.Translation
while (node != null)
{
if (node.Value is Operation operation)
if (node is Operation operation)
{
for (int index = 0; index < operation.SourcesCount; index++)
{
@ -94,7 +94,7 @@ namespace ARMeilleure.Translation
}
}
node = node.Next;
node = node.ListNext;
}
for (int index = 0; index < RegisterConsts.TotalCount; index++)
@ -126,11 +126,11 @@ namespace ARMeilleure.Translation
}
// Second pass, rename variables with definitions on different blocks.
foreach (BasicBlock block in cfg.Blocks)
for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext)
{
Operand[] localDefs = new Operand[RegisterConsts.TotalCount];
LinkedListNode<Node> node = block.Operations.First;
Node node = block.Operations.First;
Operand RenameGlobal(Operand operand)
{
@ -155,7 +155,7 @@ namespace ARMeilleure.Translation
while (node != null)
{
if (node.Value is Operation operation)
if (node is Operation operation)
{
for (int index = 0; index < operation.SourcesCount; index++)
{
@ -163,7 +163,7 @@ namespace ARMeilleure.Translation
}
}
node = node.Next;
node = node.ListNext;
}
}
}
@ -238,17 +238,17 @@ namespace ARMeilleure.Translation
private static void AddPhi(BasicBlock block, PhiNode phi)
{
LinkedListNode<Node> node = block.Operations.First;
Node node = block.Operations.First;
if (node != null)
{
while (node.Next?.Value is PhiNode)
while (node.ListNext is PhiNode)
{
node = node.Next;
node = node.ListNext;
}
}
if (node?.Value is PhiNode)
if (node is PhiNode)
{
block.Operations.AddAfter(node, phi);
}

8
ARMeilleure/Translation/SsaDeconstruction.cs
View file

@ -9,13 +9,13 @@ namespace ARMeilleure.Translation
{
public static void Deconstruct(ControlFlowGraph cfg)
{
foreach (BasicBlock block in cfg.Blocks)
for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext)
{
LinkedListNode<Node> node = block.Operations.First;
Node node = block.Operations.First;
while (node?.Value is PhiNode phi)
while (node is PhiNode phi)
{
LinkedListNode<Node> nextNode = node.Next;
Node nextNode = node.ListNext;
Operand local = Local(phi.Destination.Type);