mirror of
https://github.com/ryujinx-mirror/ryujinx.git
synced 2024-12-23 12:05:45 +00:00
Relax block ordering constraints (#1535)
* Relax block ordering constraints Before `block.Next` had to follow `block.ListNext`, now it does not. Instead `CodeGenerator` will now emit the necessary jump instructions to ensure control flow. This makes control flow and block order modifications easier. It also eliminates some simple cases of redundant branches. * Set PPTC version
This commit is contained in:
parent
3d055da5fc
commit
36ec1bc6c0
11 changed files with 164 additions and 174 deletions
|
@ -427,18 +427,5 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
|
||||||
{
|
{
|
||||||
return local.Assignments.Count + local.Uses.Count;
|
return local.Assignments.Count + local.Uses.Count;
|
||||||
}
|
}
|
||||||
|
|
||||||
private static IEnumerable<BasicBlock> Successors(BasicBlock block)
|
|
||||||
{
|
|
||||||
if (block.Next != null)
|
|
||||||
{
|
|
||||||
yield return block.Next;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (block.Branch != null)
|
|
||||||
{
|
|
||||||
yield return block.Branch;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
}
|
}
|
|
@ -626,16 +626,11 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
|
||||||
continue;
|
continue;
|
||||||
}
|
}
|
||||||
|
|
||||||
bool hasSingleOrNoSuccessor = block.Next == null || block.Branch == null;
|
bool hasSingleOrNoSuccessor = block.SuccessorCount <= 1;
|
||||||
|
|
||||||
for (int i = 0; i < 2; i++)
|
for (int i = 0; i < block.SuccessorCount; i++)
|
||||||
{
|
{
|
||||||
// This used to use an enumerable, but it ended up generating a lot of garbage, so now it is a loop.
|
BasicBlock successor = block.GetSuccessor(i);
|
||||||
BasicBlock successor = (i == 0) ? block.Next : block.Branch;
|
|
||||||
if (successor == null)
|
|
||||||
{
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
|
|
||||||
int succIndex = successor.Index;
|
int succIndex = successor.Index;
|
||||||
|
|
||||||
|
@ -643,7 +638,7 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
|
||||||
// (the successor before the split) should be right after it.
|
// (the successor before the split) should be right after it.
|
||||||
if (IsSplitEdgeBlock(successor))
|
if (IsSplitEdgeBlock(successor))
|
||||||
{
|
{
|
||||||
succIndex = FirstSuccessor(successor).Index;
|
succIndex = successor.GetSuccessor(0).Index;
|
||||||
}
|
}
|
||||||
|
|
||||||
CopyResolver copyResolver = new CopyResolver();
|
CopyResolver copyResolver = new CopyResolver();
|
||||||
|
@ -883,10 +878,11 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
|
||||||
|
|
||||||
BitMap liveOut = blkLiveOut[block.Index];
|
BitMap liveOut = blkLiveOut[block.Index];
|
||||||
|
|
||||||
if ((block.Next != null && liveOut.Set(blkLiveIn[block.Next.Index])) ||
|
for (int i = 0; i < block.SuccessorCount; i++)
|
||||||
(block.Branch != null && liveOut.Set(blkLiveIn[block.Branch.Index])))
|
|
||||||
{
|
{
|
||||||
modified = true;
|
BasicBlock succ = block.GetSuccessor(i);
|
||||||
|
|
||||||
|
modified |= liveOut.Set(blkLiveIn[succ.Index]);
|
||||||
}
|
}
|
||||||
|
|
||||||
BitMap liveIn = blkLiveIn[block.Index];
|
BitMap liveIn = blkLiveIn[block.Index];
|
||||||
|
@ -1002,11 +998,6 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
|
||||||
return (register.Index << 1) | (register.Type == RegisterType.Vector ? 1 : 0);
|
return (register.Index << 1) | (register.Type == RegisterType.Vector ? 1 : 0);
|
||||||
}
|
}
|
||||||
|
|
||||||
private static BasicBlock FirstSuccessor(BasicBlock block)
|
|
||||||
{
|
|
||||||
return block.Next ?? block.Branch;
|
|
||||||
}
|
|
||||||
|
|
||||||
private static IEnumerable<Node> BottomOperations(BasicBlock block)
|
private static IEnumerable<Node> BottomOperations(BasicBlock block)
|
||||||
{
|
{
|
||||||
Node node = block.Operations.Last;
|
Node node = block.Operations.Last;
|
||||||
|
|
|
@ -32,7 +32,6 @@ namespace ARMeilleure.CodeGen.X86
|
||||||
Add(Instruction.BitwiseExclusiveOr, GenerateBitwiseExclusiveOr);
|
Add(Instruction.BitwiseExclusiveOr, GenerateBitwiseExclusiveOr);
|
||||||
Add(Instruction.BitwiseNot, GenerateBitwiseNot);
|
Add(Instruction.BitwiseNot, GenerateBitwiseNot);
|
||||||
Add(Instruction.BitwiseOr, GenerateBitwiseOr);
|
Add(Instruction.BitwiseOr, GenerateBitwiseOr);
|
||||||
Add(Instruction.Branch, GenerateBranch);
|
|
||||||
Add(Instruction.BranchIf, GenerateBranchIf);
|
Add(Instruction.BranchIf, GenerateBranchIf);
|
||||||
Add(Instruction.ByteSwap, GenerateByteSwap);
|
Add(Instruction.ByteSwap, GenerateByteSwap);
|
||||||
Add(Instruction.Call, GenerateCall);
|
Add(Instruction.Call, GenerateCall);
|
||||||
|
@ -168,6 +167,23 @@ namespace ARMeilleure.CodeGen.X86
|
||||||
GenerateOperation(context, operation);
|
GenerateOperation(context, operation);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
if (block.SuccessorCount == 0)
|
||||||
|
{
|
||||||
|
// The only blocks which can have 0 successors are exit blocks.
|
||||||
|
Debug.Assert(block.Operations.Last is Operation operation &&
|
||||||
|
(operation.Instruction == Instruction.Tailcall ||
|
||||||
|
operation.Instruction == Instruction.Return));
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
BasicBlock succ = block.GetSuccessor(0);
|
||||||
|
|
||||||
|
if (succ != block.ListNext)
|
||||||
|
{
|
||||||
|
context.JumpTo(succ);
|
||||||
|
}
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
Logger.EndPass(PassName.CodeGeneration);
|
Logger.EndPass(PassName.CodeGeneration);
|
||||||
|
@ -512,11 +528,6 @@ namespace ARMeilleure.CodeGen.X86
|
||||||
context.Assembler.Or(dest, src2, dest.Type);
|
context.Assembler.Or(dest, src2, dest.Type);
|
||||||
}
|
}
|
||||||
|
|
||||||
private static void GenerateBranch(CodeGenContext context, Operation operation)
|
|
||||||
{
|
|
||||||
context.JumpTo(context.CurrBlock.Branch);
|
|
||||||
}
|
|
||||||
|
|
||||||
private static void GenerateBranchIf(CodeGenContext context, Operation operation)
|
private static void GenerateBranchIf(CodeGenContext context, Operation operation)
|
||||||
{
|
{
|
||||||
Operand comp = operation.GetSource(2);
|
Operand comp = operation.GetSource(2);
|
||||||
|
@ -527,7 +538,7 @@ namespace ARMeilleure.CodeGen.X86
|
||||||
|
|
||||||
GenerateCompareCommon(context, operation);
|
GenerateCompareCommon(context, operation);
|
||||||
|
|
||||||
context.JumpTo(cond, context.CurrBlock.Branch);
|
context.JumpTo(cond, context.CurrBlock.GetSuccessor(1));
|
||||||
}
|
}
|
||||||
|
|
||||||
private static void GenerateByteSwap(CodeGenContext context, Operation operation)
|
private static void GenerateByteSwap(CodeGenContext context, Operation operation)
|
||||||
|
|
|
@ -57,17 +57,20 @@ namespace ARMeilleure.Diagnostics
|
||||||
{
|
{
|
||||||
DumpBlockName(block);
|
DumpBlockName(block);
|
||||||
|
|
||||||
if (block.Next != null)
|
if (block.SuccessorCount > 0)
|
||||||
{
|
{
|
||||||
_builder.Append(" (next ");
|
_builder.Append(" (");
|
||||||
DumpBlockName(block.Next);
|
|
||||||
_builder.Append(')');
|
for (int i = 0; i < block.SuccessorCount; i++)
|
||||||
|
{
|
||||||
|
DumpBlockName(block.GetSuccessor(i));
|
||||||
|
|
||||||
|
if (i < block.SuccessorCount - 1)
|
||||||
|
{
|
||||||
|
_builder.Append(", ");
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
if (block.Branch != null)
|
|
||||||
{
|
|
||||||
_builder.Append(" (branch ");
|
|
||||||
DumpBlockName(block.Branch);
|
|
||||||
_builder.Append(')');
|
_builder.Append(')');
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
@ -1,9 +1,12 @@
|
||||||
|
using System;
|
||||||
using System.Collections.Generic;
|
using System.Collections.Generic;
|
||||||
|
|
||||||
namespace ARMeilleure.IntermediateRepresentation
|
namespace ARMeilleure.IntermediateRepresentation
|
||||||
{
|
{
|
||||||
class BasicBlock : IIntrusiveListNode<BasicBlock>
|
class BasicBlock : IIntrusiveListNode<BasicBlock>
|
||||||
{
|
{
|
||||||
|
private readonly List<BasicBlock> _successors = new List<BasicBlock>();
|
||||||
|
|
||||||
public int Index { get; set; }
|
public int Index { get; set; }
|
||||||
|
|
||||||
public BasicBlock ListPrevious { get; set; }
|
public BasicBlock ListPrevious { get; set; }
|
||||||
|
@ -11,69 +14,82 @@ namespace ARMeilleure.IntermediateRepresentation
|
||||||
|
|
||||||
public IntrusiveList<Node> Operations { get; }
|
public IntrusiveList<Node> Operations { get; }
|
||||||
|
|
||||||
private BasicBlock _next;
|
|
||||||
private BasicBlock _branch;
|
|
||||||
|
|
||||||
public BasicBlock Next
|
|
||||||
{
|
|
||||||
get => _next;
|
|
||||||
set => _next = AddSuccessor(_next, value);
|
|
||||||
}
|
|
||||||
|
|
||||||
public BasicBlock Branch
|
|
||||||
{
|
|
||||||
get => _branch;
|
|
||||||
set => _branch = AddSuccessor(_branch, value);
|
|
||||||
}
|
|
||||||
|
|
||||||
public List<BasicBlock> Predecessors { get; }
|
public List<BasicBlock> Predecessors { get; }
|
||||||
|
|
||||||
public HashSet<BasicBlock> DominanceFrontiers { get; }
|
public HashSet<BasicBlock> DominanceFrontiers { get; }
|
||||||
|
|
||||||
public BasicBlock ImmediateDominator { get; set; }
|
public BasicBlock ImmediateDominator { get; set; }
|
||||||
|
|
||||||
public BasicBlock()
|
public int SuccessorCount => _successors.Count;
|
||||||
|
|
||||||
|
public BasicBlock() : this(index: -1) { }
|
||||||
|
|
||||||
|
public BasicBlock(int index)
|
||||||
{
|
{
|
||||||
Operations = new IntrusiveList<Node>();
|
Operations = new IntrusiveList<Node>();
|
||||||
|
|
||||||
Predecessors = new List<BasicBlock>();
|
Predecessors = new List<BasicBlock>();
|
||||||
|
|
||||||
DominanceFrontiers = new HashSet<BasicBlock>();
|
DominanceFrontiers = new HashSet<BasicBlock>();
|
||||||
|
|
||||||
Index = -1;
|
|
||||||
}
|
|
||||||
|
|
||||||
public BasicBlock(int index) : this()
|
|
||||||
{
|
|
||||||
Index = index;
|
Index = index;
|
||||||
}
|
}
|
||||||
|
|
||||||
private BasicBlock AddSuccessor(BasicBlock oldBlock, BasicBlock newBlock)
|
public void AddSuccessor(BasicBlock block)
|
||||||
{
|
{
|
||||||
oldBlock?.Predecessors.Remove(this);
|
if (block == null)
|
||||||
newBlock?.Predecessors.Add(this);
|
{
|
||||||
|
throw new ArgumentNullException(nameof(block));
|
||||||
|
}
|
||||||
|
|
||||||
return newBlock;
|
block.Predecessors.Add(this);
|
||||||
|
|
||||||
|
_successors.Add(block);
|
||||||
|
}
|
||||||
|
|
||||||
|
public void RemoveSuccessor(int index)
|
||||||
|
{
|
||||||
|
BasicBlock oldBlock = _successors[index];
|
||||||
|
|
||||||
|
oldBlock.Predecessors.Remove(this);
|
||||||
|
|
||||||
|
_successors.RemoveAt(index);
|
||||||
|
}
|
||||||
|
|
||||||
|
public BasicBlock GetSuccessor(int index)
|
||||||
|
{
|
||||||
|
return _successors[index];
|
||||||
|
}
|
||||||
|
|
||||||
|
public void SetSuccessor(int index, BasicBlock block)
|
||||||
|
{
|
||||||
|
if (block == null)
|
||||||
|
{
|
||||||
|
throw new ArgumentNullException(nameof(block));
|
||||||
|
}
|
||||||
|
|
||||||
|
BasicBlock oldBlock = _successors[index];
|
||||||
|
|
||||||
|
oldBlock.Predecessors.Remove(this);
|
||||||
|
block.Predecessors.Add(this);
|
||||||
|
|
||||||
|
_successors[index] = block;
|
||||||
}
|
}
|
||||||
|
|
||||||
public void Append(Node node)
|
public void Append(Node node)
|
||||||
{
|
{
|
||||||
// If the branch block is not null, then the list of operations
|
var lastOp = Operations.Last as Operation;
|
||||||
// should end with a branch instruction. We insert the new operation
|
|
||||||
// before this branch.
|
|
||||||
if (_branch != null || (Operations.Last != null && IsLeafBlock()))
|
|
||||||
{
|
|
||||||
Operations.AddBefore(Operations.Last, node);
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
Operations.AddLast(node);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
private bool IsLeafBlock()
|
// Append node before terminal or to end if no terminal.
|
||||||
|
switch (lastOp?.Instruction)
|
||||||
{
|
{
|
||||||
return _branch == null && _next == null;
|
case Instruction.Return:
|
||||||
|
case Instruction.Tailcall:
|
||||||
|
case Instruction.BranchIf:
|
||||||
|
Operations.AddBefore(lastOp, node);
|
||||||
|
break;
|
||||||
|
|
||||||
|
default:
|
||||||
|
Operations.AddLast(node);
|
||||||
|
break;
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
public Node GetLastOp()
|
public Node GetLastOp()
|
||||||
|
|
|
@ -7,7 +7,6 @@ namespace ARMeilleure.IntermediateRepresentation
|
||||||
BitwiseExclusiveOr,
|
BitwiseExclusiveOr,
|
||||||
BitwiseNot,
|
BitwiseNot,
|
||||||
BitwiseOr,
|
BitwiseOr,
|
||||||
Branch,
|
|
||||||
BranchIf,
|
BranchIf,
|
||||||
ByteSwap,
|
ByteSwap,
|
||||||
Call,
|
Call,
|
||||||
|
|
|
@ -8,11 +8,8 @@ namespace ARMeilleure.Translation
|
||||||
class ControlFlowGraph
|
class ControlFlowGraph
|
||||||
{
|
{
|
||||||
public BasicBlock Entry { get; }
|
public BasicBlock Entry { get; }
|
||||||
|
|
||||||
public IntrusiveList<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, IntrusiveList<BasicBlock> blocks)
|
public ControlFlowGraph(BasicBlock entry, IntrusiveList<BasicBlock> blocks)
|
||||||
|
@ -22,33 +19,37 @@ namespace ARMeilleure.Translation
|
||||||
|
|
||||||
RemoveUnreachableBlocks(blocks);
|
RemoveUnreachableBlocks(blocks);
|
||||||
|
|
||||||
HashSet<BasicBlock> visited = new HashSet<BasicBlock>();
|
var visited = new HashSet<BasicBlock>();
|
||||||
|
var blockStack = new Stack<BasicBlock>();
|
||||||
Stack<BasicBlock> blockStack = new Stack<BasicBlock>();
|
|
||||||
|
|
||||||
PostOrderBlocks = new BasicBlock[blocks.Count];
|
PostOrderBlocks = new BasicBlock[blocks.Count];
|
||||||
|
|
||||||
PostOrderMap = new int[blocks.Count];
|
PostOrderMap = new int[blocks.Count];
|
||||||
|
|
||||||
visited.Add(entry);
|
visited.Add(entry);
|
||||||
|
|
||||||
blockStack.Push(entry);
|
blockStack.Push(entry);
|
||||||
|
|
||||||
int index = 0;
|
int index = 0;
|
||||||
|
|
||||||
while (blockStack.TryPop(out BasicBlock block))
|
while (blockStack.TryPop(out BasicBlock block))
|
||||||
{
|
{
|
||||||
if (block.Next != null && visited.Add(block.Next))
|
bool visitedNew = false;
|
||||||
|
|
||||||
|
for (int i = 0; i < block.SuccessorCount; i++)
|
||||||
|
{
|
||||||
|
BasicBlock succ = block.GetSuccessor(i);
|
||||||
|
|
||||||
|
if (visited.Add(succ))
|
||||||
{
|
{
|
||||||
blockStack.Push(block);
|
blockStack.Push(block);
|
||||||
blockStack.Push(block.Next);
|
blockStack.Push(succ);
|
||||||
|
|
||||||
|
visitedNew = true;
|
||||||
|
|
||||||
|
break;
|
||||||
}
|
}
|
||||||
else if (block.Branch != null && visited.Add(block.Branch))
|
|
||||||
{
|
|
||||||
blockStack.Push(block);
|
|
||||||
blockStack.Push(block.Branch);
|
|
||||||
}
|
}
|
||||||
else
|
|
||||||
|
if (!visitedNew)
|
||||||
{
|
{
|
||||||
PostOrderMap[block.Index] = index;
|
PostOrderMap[block.Index] = index;
|
||||||
|
|
||||||
|
@ -59,26 +60,24 @@ namespace ARMeilleure.Translation
|
||||||
|
|
||||||
private void RemoveUnreachableBlocks(IntrusiveList<BasicBlock> blocks)
|
private void RemoveUnreachableBlocks(IntrusiveList<BasicBlock> blocks)
|
||||||
{
|
{
|
||||||
HashSet<BasicBlock> visited = new HashSet<BasicBlock>();
|
var visited = new HashSet<BasicBlock>();
|
||||||
|
var workQueue = new Queue<BasicBlock>();
|
||||||
Queue<BasicBlock> workQueue = new Queue<BasicBlock>();
|
|
||||||
|
|
||||||
visited.Add(Entry);
|
visited.Add(Entry);
|
||||||
|
|
||||||
workQueue.Enqueue(Entry);
|
workQueue.Enqueue(Entry);
|
||||||
|
|
||||||
while (workQueue.TryDequeue(out BasicBlock block))
|
while (workQueue.TryDequeue(out BasicBlock block))
|
||||||
{
|
{
|
||||||
Debug.Assert(block.Index != -1, "Invalid block index.");
|
Debug.Assert(block.Index != -1, "Invalid block index.");
|
||||||
|
|
||||||
if (block.Next != null && visited.Add(block.Next))
|
for (int i = 0; i < block.SuccessorCount; i++)
|
||||||
{
|
{
|
||||||
workQueue.Enqueue(block.Next);
|
BasicBlock succ = block.GetSuccessor(i);
|
||||||
}
|
|
||||||
|
|
||||||
if (block.Branch != null && visited.Add(block.Branch))
|
if (visited.Add(succ))
|
||||||
{
|
{
|
||||||
workQueue.Enqueue(block.Branch);
|
workQueue.Enqueue(succ);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -93,8 +92,10 @@ namespace ARMeilleure.Translation
|
||||||
|
|
||||||
if (!visited.Contains(block))
|
if (!visited.Contains(block))
|
||||||
{
|
{
|
||||||
block.Next = null;
|
while (block.SuccessorCount > 0)
|
||||||
block.Branch = null;
|
{
|
||||||
|
block.RemoveSuccessor(index: block.SuccessorCount - 1);
|
||||||
|
}
|
||||||
|
|
||||||
blocks.Remove(block);
|
blocks.Remove(block);
|
||||||
}
|
}
|
||||||
|
@ -112,14 +113,12 @@ namespace ARMeilleure.Translation
|
||||||
{
|
{
|
||||||
BasicBlock splitBlock = new BasicBlock(Blocks.Count);
|
BasicBlock splitBlock = new BasicBlock(Blocks.Count);
|
||||||
|
|
||||||
if (predecessor.Next == successor)
|
for (int i = 0; i < predecessor.SuccessorCount; i++)
|
||||||
{
|
{
|
||||||
predecessor.Next = splitBlock;
|
if (predecessor.GetSuccessor(i) == successor)
|
||||||
|
{
|
||||||
|
predecessor.SetSuccessor(i, splitBlock);
|
||||||
}
|
}
|
||||||
|
|
||||||
if (predecessor.Branch == successor)
|
|
||||||
{
|
|
||||||
predecessor.Branch = splitBlock;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
if (splitBlock.Predecessors.Count == 0)
|
if (splitBlock.Predecessors.Count == 0)
|
||||||
|
@ -127,26 +126,7 @@ namespace ARMeilleure.Translation
|
||||||
throw new ArgumentException("Predecessor and successor are not connected.");
|
throw new ArgumentException("Predecessor and successor are not connected.");
|
||||||
}
|
}
|
||||||
|
|
||||||
// Insert the new block on the list of blocks.
|
splitBlock.AddSuccessor(successor);
|
||||||
BasicBlock succPrev = successor.ListPrevious;
|
|
||||||
|
|
||||||
if (succPrev != null && succPrev != predecessor && succPrev.Next == successor)
|
|
||||||
{
|
|
||||||
// Can't insert after the predecessor or before the successor.
|
|
||||||
// Here, we insert it before the successor by also spliting another
|
|
||||||
// edge (the one between the block before "successor" and "successor").
|
|
||||||
BasicBlock splitBlock2 = new BasicBlock(splitBlock.Index + 1);
|
|
||||||
|
|
||||||
succPrev.Next = splitBlock2;
|
|
||||||
|
|
||||||
splitBlock2.Branch = successor;
|
|
||||||
|
|
||||||
splitBlock2.Operations.AddLast(OperationHelper.Operation(Instruction.Branch, null));
|
|
||||||
|
|
||||||
Blocks.AddBefore(successor, splitBlock2);
|
|
||||||
}
|
|
||||||
|
|
||||||
splitBlock.Next = successor;
|
|
||||||
|
|
||||||
Blocks.AddBefore(successor, splitBlock);
|
Blocks.AddBefore(successor, splitBlock);
|
||||||
|
|
||||||
|
|
|
@ -13,18 +13,17 @@ namespace ARMeilleure.Translation
|
||||||
|
|
||||||
class EmitterContext
|
class EmitterContext
|
||||||
{
|
{
|
||||||
private Dictionary<Operand, BasicBlock> _irLabels;
|
private readonly Dictionary<Operand, BasicBlock> _irLabels;
|
||||||
|
private readonly IntrusiveList<BasicBlock> _irBlocks;
|
||||||
private IntrusiveList<BasicBlock> _irBlocks;
|
|
||||||
|
|
||||||
private BasicBlock _irBlock;
|
private BasicBlock _irBlock;
|
||||||
|
private BasicBlock _ifBlock;
|
||||||
|
|
||||||
private bool _needsNewBlock;
|
private bool _needsNewBlock;
|
||||||
|
|
||||||
public EmitterContext()
|
public EmitterContext()
|
||||||
{
|
{
|
||||||
_irLabels = new Dictionary<Operand, BasicBlock>();
|
_irLabels = new Dictionary<Operand, BasicBlock>();
|
||||||
|
|
||||||
_irBlocks = new IntrusiveList<BasicBlock>();
|
_irBlocks = new IntrusiveList<BasicBlock>();
|
||||||
|
|
||||||
_needsNewBlock = true;
|
_needsNewBlock = true;
|
||||||
|
@ -57,16 +56,16 @@ namespace ARMeilleure.Translation
|
||||||
|
|
||||||
public void Branch(Operand label)
|
public void Branch(Operand label)
|
||||||
{
|
{
|
||||||
Add(Instruction.Branch, null);
|
NewNextBlockIfNeeded();
|
||||||
|
|
||||||
BranchToLabel(label);
|
BranchToLabel(label, uncond: true);
|
||||||
}
|
}
|
||||||
|
|
||||||
public void BranchIf(Operand label, Operand op1, Operand op2, Comparison comp)
|
public void BranchIf(Operand label, Operand op1, Operand op2, Comparison comp)
|
||||||
{
|
{
|
||||||
Add(Instruction.BranchIf, null, op1, op2, Const((int)comp));
|
Add(Instruction.BranchIf, null, op1, op2, Const((int)comp));
|
||||||
|
|
||||||
BranchToLabel(label);
|
BranchToLabel(label, uncond: false);
|
||||||
}
|
}
|
||||||
|
|
||||||
public void BranchIfFalse(Operand label, Operand op1)
|
public void BranchIfFalse(Operand label, Operand op1)
|
||||||
|
@ -574,10 +573,7 @@ namespace ARMeilleure.Translation
|
||||||
|
|
||||||
private Operand Add(Intrinsic intrin, Operand dest, params Operand[] sources)
|
private Operand Add(Intrinsic intrin, Operand dest, params Operand[] sources)
|
||||||
{
|
{
|
||||||
if (_needsNewBlock)
|
NewNextBlockIfNeeded();
|
||||||
{
|
|
||||||
NewNextBlock();
|
|
||||||
}
|
|
||||||
|
|
||||||
IntrinsicOperation operation = new IntrinsicOperation(intrin, dest, sources);
|
IntrinsicOperation operation = new IntrinsicOperation(intrin, dest, sources);
|
||||||
|
|
||||||
|
@ -586,7 +582,7 @@ namespace ARMeilleure.Translation
|
||||||
return dest;
|
return dest;
|
||||||
}
|
}
|
||||||
|
|
||||||
private void BranchToLabel(Operand label)
|
private void BranchToLabel(Operand label, bool uncond)
|
||||||
{
|
{
|
||||||
if (!_irLabels.TryGetValue(label, out BasicBlock branchBlock))
|
if (!_irLabels.TryGetValue(label, out BasicBlock branchBlock))
|
||||||
{
|
{
|
||||||
|
@ -595,7 +591,15 @@ namespace ARMeilleure.Translation
|
||||||
_irLabels.Add(label, branchBlock);
|
_irLabels.Add(label, branchBlock);
|
||||||
}
|
}
|
||||||
|
|
||||||
_irBlock.Branch = branchBlock;
|
if (uncond)
|
||||||
|
{
|
||||||
|
_irBlock.AddSuccessor(branchBlock);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// Defer registration of successor to _irBlock so that the order of successors is correct.
|
||||||
|
_ifBlock = branchBlock;
|
||||||
|
}
|
||||||
|
|
||||||
_needsNewBlock = true;
|
_needsNewBlock = true;
|
||||||
}
|
}
|
||||||
|
@ -629,9 +633,16 @@ namespace ARMeilleure.Translation
|
||||||
|
|
||||||
private void NextBlock(BasicBlock nextBlock)
|
private void NextBlock(BasicBlock nextBlock)
|
||||||
{
|
{
|
||||||
if (_irBlock != null && !EndsWithUnconditional(_irBlock))
|
if (_irBlock != null && _irBlock.SuccessorCount == 0 && !EndsWithUnconditional(_irBlock))
|
||||||
{
|
{
|
||||||
_irBlock.Next = nextBlock;
|
_irBlock.AddSuccessor(nextBlock);
|
||||||
|
|
||||||
|
if (_ifBlock != null)
|
||||||
|
{
|
||||||
|
_irBlock.AddSuccessor(_ifBlock);
|
||||||
|
|
||||||
|
_ifBlock = null;
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
_irBlock = nextBlock;
|
_irBlock = nextBlock;
|
||||||
|
@ -642,8 +653,7 @@ namespace ARMeilleure.Translation
|
||||||
private static bool EndsWithUnconditional(BasicBlock block)
|
private static bool EndsWithUnconditional(BasicBlock block)
|
||||||
{
|
{
|
||||||
return block.Operations.Last is Operation lastOp &&
|
return block.Operations.Last is Operation lastOp &&
|
||||||
(lastOp.Instruction == Instruction.Branch ||
|
(lastOp.Instruction == Instruction.Return ||
|
||||||
lastOp.Instruction == Instruction.Return ||
|
|
||||||
lastOp.Instruction == Instruction.Tailcall);
|
lastOp.Instruction == Instruction.Tailcall);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
@ -21,7 +21,7 @@ namespace ARMeilleure.Translation.PTC
|
||||||
{
|
{
|
||||||
private const string HeaderMagic = "PTChd";
|
private const string HeaderMagic = "PTChd";
|
||||||
|
|
||||||
private const int InternalVersion = 1537; //! To be incremented manually for each change to the ARMeilleure project.
|
private const int InternalVersion = 1535; //! To be incremented manually for each change to the ARMeilleure project.
|
||||||
|
|
||||||
private const string ActualDir = "0";
|
private const string ActualDir = "0";
|
||||||
private const string BackupDir = "1";
|
private const string BackupDir = "1";
|
||||||
|
|
|
@ -171,14 +171,9 @@ namespace ARMeilleure.Translation
|
||||||
|
|
||||||
RegisterMask inputs = localInputs[block.Index];
|
RegisterMask inputs = localInputs[block.Index];
|
||||||
|
|
||||||
if (block.Next != null)
|
for (int i = 0; i < block.SuccessorCount; i++)
|
||||||
{
|
{
|
||||||
inputs |= globalInputs[block.Next.Index];
|
inputs |= globalInputs[block.GetSuccessor(i).Index];
|
||||||
}
|
|
||||||
|
|
||||||
if (block.Branch != null)
|
|
||||||
{
|
|
||||||
inputs |= globalInputs[block.Branch.Index];
|
|
||||||
}
|
}
|
||||||
|
|
||||||
inputs &= ~globalCmnOutputs[block.Index];
|
inputs &= ~globalCmnOutputs[block.Index];
|
||||||
|
|
|
@ -309,8 +309,6 @@ namespace ARMeilleure.Translation
|
||||||
|
|
||||||
context.Return(Const(0L));
|
context.Return(Const(0L));
|
||||||
|
|
||||||
context.Branch(lblExit);
|
|
||||||
|
|
||||||
context.MarkLabel(lblNonZero);
|
context.MarkLabel(lblNonZero);
|
||||||
|
|
||||||
count = context.Subtract(count, Const(1));
|
count = context.Subtract(count, Const(1));
|
||||||
|
|
Loading…
Reference in a new issue