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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; 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) 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) 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 // Remove a node from the nodes list, and also remove itself
// from all the use lists on the operands that this node uses. // from all the use lists on the operands that this node uses.
block.Operations.Remove(llNode); block.Operations.Remove(node);
Node node = llNode.Value;
for (int index = 0; index < node.SourcesCount; index++) 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; 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) if (node is Operation operation && operation.Instruction == Instruction.Call)
{ {
@ -176,10 +176,8 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
intLocalFreeRegisters &= ~(intSpillTempRegisters | intCallerSavedRegisters); intLocalFreeRegisters &= ~(intSpillTempRegisters | intCallerSavedRegisters);
vecLocalFreeRegisters &= ~(vecSpillTempRegisters | vecCallerSavedRegisters); 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 intLocalUse = 0;
int vecLocalUse = 0; int vecLocalUse = 0;
@ -232,7 +230,7 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
Operation fillOp = new Operation(Instruction.Fill, temp, Const(info.SpillOffset)); 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); 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 LiveInterval[] _parentIntervals;
private List<LinkedListNode<Node>> _operationNodes; private List<(IntrusiveList<Node>, Node)> _operationNodes;
private int _operationsCount; private int _operationsCount;
@ -583,15 +583,19 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
int splitPosition = kv.Key; int splitPosition = kv.Key;
LinkedListNode<Node> node = GetOperationNode(splitPosition); (IntrusiveList<Node> nodes, Node node) = GetOperationNode(splitPosition);
Operation[] sequence = copyResolver.Sequence(); 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++) 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; 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)) if (IsSplitEdgeBlock(block))
{ {
continue; continue;
@ -666,13 +668,17 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
} }
else if (successor.Predecessors.Count == 1) 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++) for (int index = 1; index < sequence.Length; index++)
{ {
Operation operation = sequence[index]; Operation operation = sequence[index];
prependNode = successor.Operations.AddAfter(prependNode, operation); successor.Operations.AddAfter(prependNode, operation);
prependNode = operation;
} }
} }
else else
@ -695,7 +701,7 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
foreach (int usePosition in current.UsePositions()) foreach (int usePosition in current.UsePositions())
{ {
Node operation = GetOperationNode(usePosition).Value; (_, Node operation) = GetOperationNode(usePosition);
for (int index = 0; index < operation.SourcesCount; index++) for (int index = 0; index < operation.SourcesCount; index++)
{ {
@ -729,14 +735,14 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
interval.Local.Type); interval.Local.Type);
} }
private LinkedListNode<Node> GetOperationNode(int position) private (IntrusiveList<Node>, Node) GetOperationNode(int position)
{ {
return _operationNodes[position / InstructionGap]; return _operationNodes[position / InstructionGap];
} }
private void NumberLocals(ControlFlowGraph cfg) private void NumberLocals(ControlFlowGraph cfg)
{ {
_operationNodes = new List<LinkedListNode<Node>>(); _operationNodes = new List<(IntrusiveList<Node>, Node)>();
_intervals = new List<LiveInterval>(); _intervals = new List<LiveInterval>();
@ -754,13 +760,11 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
{ {
BasicBlock block = cfg.PostOrderBlocks[index]; 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(node))
foreach (Operand dest in Destinations(operation))
{ {
if (dest.Kind == OperandKind.LocalVariable && visited.Add(dest)) if (dest.Kind == OperandKind.LocalVariable && visited.Add(dest))
{ {
@ -776,7 +780,7 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
if (block.Operations.Count == 0) if (block.Operations.Count == 0)
{ {
// Pretend we have a dummy instruction on the empty block. // Pretend we have a dummy instruction on the empty block.
_operationNodes.Add(null); _operationNodes.Add((null, null));
_operationsCount += InstructionGap; _operationsCount += InstructionGap;
} }
@ -795,12 +799,12 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
BitMap[] blkLiveKill = new BitMap[cfg.Blocks.Count]; BitMap[] blkLiveKill = new BitMap[cfg.Blocks.Count];
// Compute local live sets. // 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 liveGen = new BitMap(mapSize);
BitMap liveKill = 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)) foreach (Operand source in Sources(node))
{ {
@ -979,13 +983,13 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
private static IEnumerable<Node> BottomOperations(BasicBlock block) 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); UnwindInfo unwindInfo = WritePrologue(context);
foreach (BasicBlock block in cfg.Blocks) for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext)
{ {
context.EnterBlock(block); 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) 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 namespace ARMeilleure.CodeGen.X86
{ {
using LLNode = LinkedListNode<Node>;
static class PreAllocator static class PreAllocator
{ {
public static void RunPass(CompilerContext cctx, StackAllocator stackAlloc, out int maxCallArgs) 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()]; 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; 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) switch (operation.Instruction)
{ {
@ -62,51 +60,51 @@ namespace ARMeilleure.CodeGen.X86
// being called, as mandated by the ABI. // being called, as mandated by the ABI.
if (callConv == CallConvName.Windows) if (callConv == CallConvName.Windows)
{ {
node = HandleCallWindowsAbi(stackAlloc, node, operation); node = HandleCallWindowsAbi(block.Operations, stackAlloc, node, operation);
} }
else /* if (callConv == CallConvName.SystemV) */ else /* if (callConv == CallConvName.SystemV) */
{ {
node = HandleCallSystemVAbi(node, operation); node = HandleCallSystemVAbi(block.Operations, node, operation);
} }
break; break;
case Instruction.ConvertToFPUI: case Instruction.ConvertToFPUI:
HandleConvertToFPUI(node, operation); HandleConvertToFPUI(block.Operations, node, operation);
break; break;
case Instruction.LoadArgument: case Instruction.LoadArgument:
if (callConv == CallConvName.Windows) if (callConv == CallConvName.Windows)
{ {
HandleLoadArgumentWindowsAbi(cctx, node, preservedArgs, operation); HandleLoadArgumentWindowsAbi(cctx, block.Operations, node, preservedArgs, operation);
} }
else /* if (callConv == CallConvName.SystemV) */ else /* if (callConv == CallConvName.SystemV) */
{ {
HandleLoadArgumentSystemVAbi(cctx, node, preservedArgs, operation); HandleLoadArgumentSystemVAbi(cctx, block.Operations, node, preservedArgs, operation);
} }
break; break;
case Instruction.Negate: case Instruction.Negate:
if (!operation.GetSource(0).Type.IsInteger()) if (!operation.GetSource(0).Type.IsInteger())
{ {
node = HandleNegate(node, operation); node = HandleNegate(block.Operations, node, operation);
} }
break; break;
case Instruction.Return: case Instruction.Return:
if (callConv == CallConvName.Windows) if (callConv == CallConvName.Windows)
{ {
HandleReturnWindowsAbi(cctx, node, preservedArgs, operation); HandleReturnWindowsAbi(cctx, block.Operations, node, preservedArgs, operation);
} }
else /* if (callConv == CallConvName.SystemV) */ else /* if (callConv == CallConvName.SystemV) */
{ {
HandleReturnSystemVAbi(node, operation); HandleReturnSystemVAbi(block.Operations, node, operation);
} }
break; break;
case Instruction.VectorInsert8: case Instruction.VectorInsert8:
if (!HardwareCapabilities.SupportsSse41) if (!HardwareCapabilities.SupportsSse41)
{ {
node = HandleVectorInsert8(node, operation); node = HandleVectorInsert8(block.Operations, node, operation);
} }
break; 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)) 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 with the constant value (as integer) to a GPR.
// - Insert a copy from the GPR to a XMM register. // - Insert a copy from the GPR to a XMM register.
// - Replace the constant use with the XMM register. // - Replace the constant use with the XMM register.
src1 = AddXmmCopy(node, src1); src1 = AddXmmCopy(nodes, node, src1);
operation.SetSource(0, src1); operation.SetSource(0, src1);
} }
@ -164,7 +162,7 @@ namespace ARMeilleure.CodeGen.X86
if (src1.Kind == OperandKind.Constant) if (src1.Kind == OperandKind.Constant)
{ {
src1 = AddCopy(node, src1); src1 = AddCopy(nodes, node, src1);
operation.SetSource(0, src1); operation.SetSource(0, src1);
} }
@ -182,25 +180,23 @@ namespace ARMeilleure.CodeGen.X86
{ {
if (!src2.Type.IsInteger()) if (!src2.Type.IsInteger())
{ {
src2 = AddXmmCopy(node, src2); src2 = AddXmmCopy(nodes, node, src2);
operation.SetSource(1, src2); operation.SetSource(1, src2);
} }
else if (!HasConstSrc2(inst) || IsLongConst(src2)) else if (!HasConstSrc2(inst) || IsLongConst(src2))
{ {
src2 = AddCopy(node, src2); src2 = AddCopy(nodes, node, src2);
operation.SetSource(1, 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; Operand dest = operation.Destination;
LinkedList<Node> nodes = node.List;
switch (operation.Instruction) switch (operation.Instruction)
{ {
case Instruction.CompareAndSwap128: case Instruction.CompareAndSwap128:
@ -359,7 +355,7 @@ namespace ARMeilleure.CodeGen.X86
return node; 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) if (operation.Destination == null || operation.SourcesCount == 0)
{ {
@ -371,8 +367,6 @@ namespace ARMeilleure.CodeGen.X86
Operand dest = operation.Destination; Operand dest = operation.Destination;
Operand src1 = operation.GetSource(0); Operand src1 = operation.GetSource(0);
LinkedList<Node> nodes = node.List;
// The multiply instruction (that maps to IMUL) is somewhat special, it has // The multiply instruction (that maps to IMUL) is somewhat special, it has
// a three operand form where the second source is a immediate value. // a three operand form where the second source is a immediate value.
bool threeOperandForm = inst == Instruction.Multiply && operation.GetSource(1).Kind == OperandKind.Constant; bool threeOperandForm = inst == Instruction.Multiply && operation.GetSource(1).Kind == OperandKind.Constant;
@ -441,7 +435,7 @@ namespace ARMeilleure.CodeGen.X86
return node; 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. // Unsigned integer to FP conversions are not supported on X86.
// We need to turn them into signed integer to FP conversions, and // 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}\"."); Debug.Assert(source.Type.IsInteger(), $"Invalid source type \"{source.Type}\".");
LinkedList<Node> nodes = node.List; Node currentNode = node;
LLNode currentNode = node;
if (source.Type == OperandType.I32) if (source.Type == OperandType.I32)
{ {
@ -494,12 +486,12 @@ namespace ARMeilleure.CodeGen.X86
node = nodes.AddAfter(node, new Operation(Instruction.Add, dest, dest, lsbF)); node = nodes.AddAfter(node, new Operation(Instruction.Add, dest, dest, lsbF));
} }
Delete(currentNode, operation); Delete(nodes, currentNode, operation);
return node; 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 // 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. // 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 || Debug.Assert(dest.Type == OperandType.FP32 ||
dest.Type == OperandType.FP64, $"Invalid destination type \"{dest.Type}\"."); dest.Type == OperandType.FP64, $"Invalid destination type \"{dest.Type}\".");
LinkedList<Node> nodes = node.List; Node currentNode = node;
LLNode currentNode = node;
Operand res = Local(dest.Type); Operand res = Local(dest.Type);
@ -531,12 +521,12 @@ namespace ARMeilleure.CodeGen.X86
node = nodes.AddAfter(node, new Operation(Instruction.Copy, dest, res)); node = nodes.AddAfter(node, new Operation(Instruction.Copy, dest, res));
Delete(currentNode, operation); Delete(nodes, currentNode, operation);
return node; 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. // Handle vector insertion, when SSE 4.1 is not supported.
Operand dest = operation.Destination; Operand dest = operation.Destination;
@ -550,9 +540,7 @@ namespace ARMeilleure.CodeGen.X86
Debug.Assert(index < 16); Debug.Assert(index < 16);
LinkedList<Node> nodes = node.List; Node currentNode = node;
LLNode currentNode = node;
Operand temp1 = Local(OperandType.I32); Operand temp1 = Local(OperandType.I32);
Operand temp2 = Local(OperandType.I32); Operand temp2 = Local(OperandType.I32);
@ -580,17 +568,15 @@ namespace ARMeilleure.CodeGen.X86
node = nodes.AddAfter(node, vinsOp); node = nodes.AddAfter(node, vinsOp);
Delete(currentNode, operation); Delete(nodes, currentNode, operation);
return node; 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; Operand dest = operation.Destination;
LinkedList<Node> nodes = node.List;
// Handle struct arguments. // Handle struct arguments.
int retArgs = 0; int retArgs = 0;
@ -661,7 +647,7 @@ namespace ARMeilleure.CodeGen.X86
Operation storeOp = new Operation(Instruction.Store, null, stackAddr, source); 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); operation.SetSource(index, stackAddr);
} }
@ -687,7 +673,7 @@ namespace ARMeilleure.CodeGen.X86
Operation copyOp = new Operation(Instruction.Copy, argReg, source); 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; sources[1 + retArgs + index] = argReg;
} }
@ -702,7 +688,7 @@ namespace ARMeilleure.CodeGen.X86
Operation spillOp = new Operation(Instruction.SpillArg, null, offset, source); 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) if (dest != null)
@ -738,15 +724,14 @@ namespace ARMeilleure.CodeGen.X86
return node; 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; Operand dest = operation.Destination;
LinkedList<Node> nodes = node.List; List<Operand> sources = new List<Operand>
{
List<Operand> sources = new List<Operand>(); operation.GetSource(0)
};
sources.Add(operation.GetSource(0));
int argsCount = operation.SourcesCount - 1; int argsCount = operation.SourcesCount - 1;
@ -797,7 +782,7 @@ namespace ARMeilleure.CodeGen.X86
Operation copyOp = new Operation(Instruction.Copy, argReg, source); Operation copyOp = new Operation(Instruction.Copy, argReg, source);
HandleConstantCopy(nodes.AddBefore(node, copyOp), copyOp); HandleConstantCopy(nodes, nodes.AddBefore(node, copyOp), copyOp);
sources.Add(argReg); sources.Add(argReg);
} }
@ -807,7 +792,7 @@ namespace ARMeilleure.CodeGen.X86
Operation spillOp = new Operation(Instruction.SpillArg, null, offset, source); 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(); stackOffset += source.Type.GetSizeInBytes();
} }
@ -846,7 +831,8 @@ namespace ARMeilleure.CodeGen.X86
private static void HandleLoadArgumentWindowsAbi( private static void HandleLoadArgumentWindowsAbi(
CompilerContext cctx, CompilerContext cctx,
LLNode node, IntrusiveList<Node> nodes,
Node node,
Operand[] preservedArgs, Operand[] preservedArgs,
Operation operation) Operation operation)
{ {
@ -896,9 +882,9 @@ namespace ARMeilleure.CodeGen.X86
? Instruction.Load ? Instruction.Load
: Instruction.Copy, dest, preservedArgs[index]); : Instruction.Copy, dest, preservedArgs[index]);
node.List.AddBefore(node, argCopyOp); nodes.AddBefore(node, argCopyOp);
Delete(node, operation); Delete(nodes, node, operation);
} }
else else
{ {
@ -908,7 +894,8 @@ namespace ARMeilleure.CodeGen.X86
private static void HandleLoadArgumentSystemVAbi( private static void HandleLoadArgumentSystemVAbi(
CompilerContext cctx, CompilerContext cctx,
LLNode node, IntrusiveList<Node> nodes,
Node node,
Operand[] preservedArgs, Operand[] preservedArgs,
Operation operation) Operation operation)
{ {
@ -994,9 +981,9 @@ namespace ARMeilleure.CodeGen.X86
Operation argCopyOp = new Operation(Instruction.Copy, dest, preservedArgs[index]); 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 else
{ {
@ -1006,7 +993,8 @@ namespace ARMeilleure.CodeGen.X86
private static void HandleReturnWindowsAbi( private static void HandleReturnWindowsAbi(
CompilerContext cctx, CompilerContext cctx,
LLNode node, IntrusiveList<Node> nodes,
Node node,
Operand[] preservedArgs, Operand[] preservedArgs,
Operation operation) Operation operation)
{ {
@ -1049,19 +1037,19 @@ namespace ARMeilleure.CodeGen.X86
{ {
Operation retStoreOp = new Operation(Instruction.Store, null, retReg, source); Operation retStoreOp = new Operation(Instruction.Store, null, retReg, source);
node.List.AddBefore(node, retStoreOp); nodes.AddBefore(node, retStoreOp);
} }
else else
{ {
Operation retCopyOp = new Operation(Instruction.Copy, retReg, source); Operation retCopyOp = new Operation(Instruction.Copy, retReg, source);
node.List.AddBefore(node, retCopyOp); nodes.AddBefore(node, retCopyOp);
} }
operation.SetSources(new Operand[0]); 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) if (operation.SourcesCount == 0)
{ {
@ -1075,8 +1063,8 @@ namespace ARMeilleure.CodeGen.X86
Operand retLReg = Gpr(CallingConvention.GetIntReturnRegister(), OperandType.I64); Operand retLReg = Gpr(CallingConvention.GetIntReturnRegister(), OperandType.I64);
Operand retHReg = Gpr(CallingConvention.GetIntReturnRegisterHigh(), OperandType.I64); Operand retHReg = Gpr(CallingConvention.GetIntReturnRegisterHigh(), OperandType.I64);
node.List.AddBefore(node, new Operation(Instruction.VectorExtract, retLReg, source, Const(0))); nodes.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, retHReg, source, Const(1)));
} }
else else
{ {
@ -1086,30 +1074,30 @@ namespace ARMeilleure.CodeGen.X86
Operation retCopyOp = new Operation(Instruction.Copy, retReg, source); 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 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); Operation copyOp = new Operation(Instruction.VectorCreateScalar, temp, intConst);
node.List.AddBefore(node, copyOp); nodes.AddBefore(node, copyOp);
return temp; 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); Operand temp = Local(source.Type);
Operation copyOp = new Operation(Instruction.Copy, temp, source); Operation copyOp = new Operation(Instruction.Copy, temp, source);
node.List.AddBefore(node, copyOp); nodes.AddBefore(node, copyOp);
return temp; return temp;
} }
@ -1142,7 +1130,7 @@ namespace ARMeilleure.CodeGen.X86
return value == (int)value; 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; operation.Destination = null;
@ -1151,7 +1139,7 @@ namespace ARMeilleure.CodeGen.X86
operation.SetSource(index, null); operation.SetSource(index, null);
} }
node.List.Remove(node); nodes.Remove(node);
} }
private static Operand Gpr(X86Register register, OperandType type) private static Operand Gpr(X86Register register, OperandType type)

4
ARMeilleure/Diagnostics/IRDumper.cs
View file

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

11
ARMeilleure/IntermediateRepresentation/BasicBlock.cs
View file

@ -2,13 +2,14 @@ using System.Collections.Generic;
namespace ARMeilleure.IntermediateRepresentation namespace ARMeilleure.IntermediateRepresentation
{ {
class BasicBlock class BasicBlock : IIntrusiveListNode<BasicBlock>
{ {
public int Index { get; set; } 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 _next;
private BasicBlock _branch; private BasicBlock _branch;
@ -33,7 +34,7 @@ namespace ARMeilleure.IntermediateRepresentation
public BasicBlock() public BasicBlock()
{ {
Operations = new LinkedList<Node>(); Operations = new IntrusiveList<Node>();
Predecessors = new List<BasicBlock>(); Predecessors = new List<BasicBlock>();
@ -77,7 +78,7 @@ namespace ARMeilleure.IntermediateRepresentation
public Node GetLastOp() 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;
using System.Collections.Generic;
namespace ARMeilleure.IntermediateRepresentation namespace ARMeilleure.IntermediateRepresentation
{ {
class Node class Node : IIntrusiveListNode<Node>
{ {
public Node ListPrevious { get; set; }
public Node ListNext { get; set; }
public Operand Destination public Operand Destination
{ {
get get
@ -27,9 +29,6 @@ namespace ARMeilleure.IntermediateRepresentation
private Operand[] _destinations; private Operand[] _destinations;
private Operand[] _sources; private Operand[] _sources;
private LinkedListNode<Node>[] _asgUseNodes;
private LinkedListNode<Node>[] _srcUseNodes;
public int DestinationsCount => _destinations.Length; public int DestinationsCount => _destinations.Length;
public int SourcesCount => _sources.Length; public int SourcesCount => _sources.Length;
@ -38,8 +37,6 @@ namespace ARMeilleure.IntermediateRepresentation
Destination = destination; Destination = destination;
_sources = new Operand[sourcesCount]; _sources = new Operand[sourcesCount];
_srcUseNodes = new LinkedListNode<Node>[sourcesCount];
} }
public Node(Operand[] destinations, int sourcesCount) public Node(Operand[] destinations, int sourcesCount)
@ -47,8 +44,6 @@ namespace ARMeilleure.IntermediateRepresentation
SetDestinations(destinations ?? throw new ArgumentNullException(nameof(destinations))); SetDestinations(destinations ?? throw new ArgumentNullException(nameof(destinations)));
_sources = new Operand[sourcesCount]; _sources = new Operand[sourcesCount];
_srcUseNodes = new LinkedListNode<Node>[sourcesCount];
} }
public Operand GetDestination(int index) public Operand GetDestination(int index)
@ -67,12 +62,12 @@ namespace ARMeilleure.IntermediateRepresentation
if (oldOp != null && oldOp.Kind == OperandKind.LocalVariable) if (oldOp != null && oldOp.Kind == OperandKind.LocalVariable)
{ {
oldOp.Assignments.Remove(_asgUseNodes[index]); oldOp.Assignments.Remove(this);
} }
if (destination != null && destination.Kind == OperandKind.LocalVariable) if (destination != null && destination.Kind == OperandKind.LocalVariable)
{ {
_asgUseNodes[index] = destination.Assignments.AddLast(this); destination.Assignments.Add(this);
} }
_destinations[index] = destination; _destinations[index] = destination;
@ -84,12 +79,12 @@ namespace ARMeilleure.IntermediateRepresentation
if (oldOp != null && oldOp.Kind == OperandKind.LocalVariable) if (oldOp != null && oldOp.Kind == OperandKind.LocalVariable)
{ {
oldOp.Uses.Remove(_srcUseNodes[index]); oldOp.Uses.Remove(this);
} }
if (source != null && source.Kind == OperandKind.LocalVariable) if (source != null && source.Kind == OperandKind.LocalVariable)
{ {
_srcUseNodes[index] = source.Uses.AddLast(this); source.Uses.Add(this);
} }
_sources[index] = source; _sources[index] = source;
@ -105,7 +100,7 @@ namespace ARMeilleure.IntermediateRepresentation
if (oldOp != null && oldOp.Kind == OperandKind.LocalVariable) 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]; _destinations = new Operand[destinations.Length];
} }
_asgUseNodes = new LinkedListNode<Node>[destinations.Length];
for (int index = 0; index < destinations.Length; index++) for (int index = 0; index < destinations.Length; index++)
{ {
Operand newOp = destinations[index]; Operand newOp = destinations[index];
@ -126,7 +119,7 @@ namespace ARMeilleure.IntermediateRepresentation
if (newOp.Kind == OperandKind.LocalVariable) 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) if (oldOp != null && oldOp.Kind == OperandKind.LocalVariable)
{ {
oldOp.Uses.Remove(_srcUseNodes[index]); oldOp.Uses.Remove(this);
} }
} }
_sources = new Operand[sources.Length]; _sources = new Operand[sources.Length];
_srcUseNodes = new LinkedListNode<Node>[sources.Length];
for (int index = 0; index < sources.Length; index++) for (int index = 0; index < sources.Length; index++)
{ {
Operand newOp = sources[index]; Operand newOp = sources[index];
@ -155,7 +146,7 @@ namespace ARMeilleure.IntermediateRepresentation
if (newOp.Kind == OperandKind.LocalVariable) 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 ulong Value { get; private set; }
public LinkedList<Node> Assignments { get; } public List<Node> Assignments { get; }
public LinkedList<Node> Uses { get; } public List<Node> Uses { get; }
private Operand() private Operand()
{ {
Assignments = new LinkedList<Node>(); Assignments = new List<Node>();
Uses = new LinkedList<Node>(); Uses = new List<Node>();
} }
public Operand(OperandKind kind, OperandType type = OperandType.None) : this() public Operand(OperandKind kind, OperandType type = OperandType.None) : this()

24
ARMeilleure/Translation/ControlFlowGraph.cs
View file

@ -9,13 +9,13 @@ namespace ARMeilleure.Translation
{ {
public BasicBlock Entry { get; } public BasicBlock Entry { get; }
public LinkedList<BasicBlock> Blocks { get; } public IntrusiveList<BasicBlock> Blocks { get; }
public BasicBlock[] PostOrderBlocks { get; } public BasicBlock[] PostOrderBlocks { get; }
public int[] PostOrderMap { get; } public int[] PostOrderMap { get; }
public ControlFlowGraph(BasicBlock entry, LinkedList<BasicBlock> blocks) public ControlFlowGraph(BasicBlock entry, IntrusiveList<BasicBlock> blocks)
{ {
Entry = entry; Entry = entry;
Blocks = blocks; 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>(); HashSet<BasicBlock> visited = new HashSet<BasicBlock>();
@ -87,25 +87,23 @@ namespace ARMeilleure.Translation
// Remove unreachable blocks and renumber. // Remove unreachable blocks and renumber.
int index = 0; int index = 0;
for (LinkedListNode<BasicBlock> node = blocks.First; node != null;) for (BasicBlock block = blocks.First; block != null;)
{ {
LinkedListNode<BasicBlock> nextNode = node.Next; BasicBlock nextBlock = block.ListNext;
BasicBlock block = node.Value;
if (!visited.Contains(block)) if (!visited.Contains(block))
{ {
block.Next = null; block.Next = null;
block.Branch = null; block.Branch = null;
blocks.Remove(node); blocks.Remove(block);
} }
else else
{ {
block.Index = index++; block.Index = index++;
} }
node = nextNode; block = nextBlock;
} }
} }
} }
@ -130,7 +128,7 @@ namespace ARMeilleure.Translation
} }
// Insert the new block on the list of blocks. // 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) if (succPrev != null && succPrev != predecessor && succPrev.Next == successor)
{ {
@ -145,12 +143,12 @@ namespace ARMeilleure.Translation
splitBlock2.Operations.AddLast(new Operation(Instruction.Branch, null)); splitBlock2.Operations.AddLast(new Operation(Instruction.Branch, null));
Blocks.AddBefore(successor.Node, splitBlock2); Blocks.AddBefore(successor, splitBlock2);
} }
splitBlock.Next = successor; splitBlock.Next = successor;
Blocks.AddBefore(successor.Node, splitBlock); Blocks.AddBefore(successor, splitBlock);
return splitBlock; return splitBlock;
} }

2
ARMeilleure/Translation/Dominance.cs
View file

@ -71,7 +71,7 @@ namespace ARMeilleure.Translation
public static void FindDominanceFrontiers(ControlFlowGraph cfg) 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) 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 Dictionary<Operand, BasicBlock> _irLabels;
private LinkedList<BasicBlock> _irBlocks; private IntrusiveList<BasicBlock> _irBlocks;
private BasicBlock _irBlock; private BasicBlock _irBlock;
@ -22,7 +22,7 @@ namespace ARMeilleure.Translation
{ {
_irLabels = new Dictionary<Operand, BasicBlock>(); _irLabels = new Dictionary<Operand, BasicBlock>();
_irBlocks = new LinkedList<BasicBlock>(); _irBlocks = new IntrusiveList<BasicBlock>();
_needsNewBlock = true; _needsNewBlock = true;
} }
@ -508,7 +508,8 @@ namespace ARMeilleure.Translation
if (_irLabels.TryGetValue(label, out BasicBlock nextBlock)) if (_irLabels.TryGetValue(label, out BasicBlock nextBlock))
{ {
nextBlock.Index = _irBlocks.Count; nextBlock.Index = _irBlocks.Count;
nextBlock.Node = _irBlocks.AddLast(nextBlock);
_irBlocks.AddLast(nextBlock);
NextBlock(nextBlock); NextBlock(nextBlock);
} }
@ -524,7 +525,7 @@ namespace ARMeilleure.Translation
{ {
BasicBlock block = new BasicBlock(_irBlocks.Count); BasicBlock block = new BasicBlock(_irBlocks.Count);
block.Node = _irBlocks.AddLast(block); _irBlocks.AddLast(block);
NextBlock(block); NextBlock(block);
} }
@ -556,7 +557,7 @@ namespace ARMeilleure.Translation
public ControlFlowGraph GetControlFlowGraph() 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; 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; 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[] localInputs = new RegisterMask[cfg.Blocks.Count];
RegisterMask[] localOutputs = 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; Operation operation = node as Operation;
@ -192,13 +192,13 @@ namespace ARMeilleure.Translation
while (modified); while (modified);
// Insert load and store context instructions where needed. // 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); bool hasContextLoad = HasContextLoad(block);
if (hasContextLoad) if (hasContextLoad)
{ {
block.Operations.RemoveFirst(); block.Operations.Remove(block.Operations.First);
} }
// The only block without any predecessor should be the entry block. // The only block without any predecessor should be the entry block.
@ -213,7 +213,7 @@ namespace ARMeilleure.Translation
if (hasContextStore) if (hasContextStore)
{ {
block.Operations.RemoveLast(); block.Operations.Remove(block.Operations.Last);
} }
if (EndsWithReturn(block) || hasContextStore) if (EndsWithReturn(block) || hasContextStore)
@ -226,7 +226,7 @@ namespace ARMeilleure.Translation
private static bool HasContextLoad(BasicBlock block) 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) private static bool HasContextStore(BasicBlock block)
@ -241,7 +241,7 @@ namespace ARMeilleure.Translation
return false; 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) private static bool EndsWith(BasicBlock block, Instruction inst)
@ -251,7 +251,7 @@ namespace ARMeilleure.Translation
return false; 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) 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]; 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(); globalDefs[block.Index] = new DefMap();
} }
@ -55,11 +55,11 @@ namespace ARMeilleure.Translation
Queue<BasicBlock> dfPhiBlocks = new Queue<BasicBlock>(); Queue<BasicBlock> dfPhiBlocks = new Queue<BasicBlock>();
// First pass, get all defs and locals uses. // 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]; Operand[] localDefs = new Operand[RegisterConsts.TotalCount];
LinkedListNode<Node> node = block.Operations.First; Node node = block.Operations.First;
Operand RenameLocal(Operand operand) Operand RenameLocal(Operand operand)
{ {
@ -75,7 +75,7 @@ namespace ARMeilleure.Translation
while (node != null) while (node != null)
{ {
if (node.Value is Operation operation) if (node is Operation operation)
{ {
for (int index = 0; index < operation.SourcesCount; index++) 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++) for (int index = 0; index < RegisterConsts.TotalCount; index++)
@ -126,11 +126,11 @@ namespace ARMeilleure.Translation
} }
// Second pass, rename variables with definitions on different blocks. // 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]; Operand[] localDefs = new Operand[RegisterConsts.TotalCount];
LinkedListNode<Node> node = block.Operations.First; Node node = block.Operations.First;
Operand RenameGlobal(Operand operand) Operand RenameGlobal(Operand operand)
{ {
@ -155,7 +155,7 @@ namespace ARMeilleure.Translation
while (node != null) while (node != null)
{ {
if (node.Value is Operation operation) if (node is Operation operation)
{ {
for (int index = 0; index < operation.SourcesCount; index++) 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) private static void AddPhi(BasicBlock block, PhiNode phi)
{ {
LinkedListNode<Node> node = block.Operations.First; Node node = block.Operations.First;
if (node != null) 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); 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) 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); Operand local = Local(phi.Destination.Type);