mirror of
https://github.com/Ryujinx/Ryujinx.git
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Optimize HybridAllocator
(#2637)
* Store constant `Operand`s in the `LocalInfo` Since the spill slot and register assigned is fixed, we can just store the `Operand` reference in the `LocalInfo` struct. This allows skipping hitting the intern-table for a look up. * Skip `Uses`/`Assignments` management Since the `HybridAllocator` is the last pass and we do not care about uses/assignments we can skip managing that when setting destinations or sources. * Make `GetLocalInfo` inlineable Also fix a possible issue where with numbered locals. See or-assignment operator in `SetVisited(local)` before patch. * Do not run `BlockPlacement` in LCQ With the host mapped memory manager, there is a lot less cold code to split from hot code. So disabling this in LCQ gives some extra throughput - where we need it. * Address Mou-Ikkai's feedback * Apply suggestions from code review Co-authored-by: VocalFan <45863583+Mou-Ikkai@users.noreply.github.com> * Move check to an assert Co-authored-by: VocalFan <45863583+Mou-Ikkai@users.noreply.github.com>
This commit is contained in:
parent
1ae690ba2f
commit
312be74861
4 changed files with 85 additions and 83 deletions
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@ -3,6 +3,7 @@ using ARMeilleure.Translation;
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using System;
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using System;
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using System.Diagnostics;
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using System.Diagnostics;
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using System.Numerics;
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using System.Numerics;
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using System.Runtime.CompilerServices;
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using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
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using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
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using static ARMeilleure.IntermediateRepresentation.Operation.Factory;
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using static ARMeilleure.IntermediateRepresentation.Operation.Factory;
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@ -10,9 +11,6 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
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{
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{
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class HybridAllocator : IRegisterAllocator
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class HybridAllocator : IRegisterAllocator
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{
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{
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private const int RegistersCount = 16;
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private const int MaxIROperands = 4;
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private struct BlockInfo
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private struct BlockInfo
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{
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{
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public bool HasCall { get; }
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public bool HasCall { get; }
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@ -32,10 +30,10 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
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{
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{
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public int Uses { get; set; }
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public int Uses { get; set; }
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public int UsesAllocated { get; set; }
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public int UsesAllocated { get; set; }
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public int Register { get; set; }
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public int SpillOffset { get; set; }
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public int Sequence { get; set; }
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public int Sequence { get; set; }
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public Operand Temp { get; set; }
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public Operand Temp { get; set; }
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public Operand Register { get; set; }
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public Operand SpillOffset { get; set; }
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public OperandType Type { get; }
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public OperandType Type { get; }
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private int _first;
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private int _first;
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@ -49,10 +47,10 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
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Type = type;
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Type = type;
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UsesAllocated = 0;
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UsesAllocated = 0;
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Register = 0;
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SpillOffset = 0;
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Sequence = 0;
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Sequence = 0;
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Temp = default;
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Temp = default;
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Register = default;
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SpillOffset = default;
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_first = -1;
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_first = -1;
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_last = -1;
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_last = -1;
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@ -74,6 +72,38 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
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}
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}
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}
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}
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private const int MaxIROperands = 4;
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// The "visited" state is stored in the MSB of the local's value.
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private const ulong VisitedMask = 1ul << 63;
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private BlockInfo[] _blockInfo;
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private LocalInfo[] _localInfo;
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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private static bool IsVisited(Operand local)
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{
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Debug.Assert(local.Kind == OperandKind.LocalVariable);
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return (local.GetValueUnsafe() & VisitedMask) != 0;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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private static void SetVisited(Operand local)
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{
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Debug.Assert(local.Kind == OperandKind.LocalVariable);
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local.GetValueUnsafe() |= VisitedMask;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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private ref LocalInfo GetLocalInfo(Operand local)
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{
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Debug.Assert(local.Kind == OperandKind.LocalVariable);
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Debug.Assert(IsVisited(local), "Local variable not visited. Used before defined?");
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return ref _localInfo[(uint)local.GetValueUnsafe() - 1];
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}
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public AllocationResult RunPass(ControlFlowGraph cfg, StackAllocator stackAlloc, RegisterMasks regMasks)
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public AllocationResult RunPass(ControlFlowGraph cfg, StackAllocator stackAlloc, RegisterMasks regMasks)
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{
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{
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int intUsedRegisters = 0;
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int intUsedRegisters = 0;
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@ -82,35 +112,11 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
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int intFreeRegisters = regMasks.IntAvailableRegisters;
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int intFreeRegisters = regMasks.IntAvailableRegisters;
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int vecFreeRegisters = regMasks.VecAvailableRegisters;
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int vecFreeRegisters = regMasks.VecAvailableRegisters;
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var blockInfo = new BlockInfo[cfg.Blocks.Count];
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_blockInfo = new BlockInfo[cfg.Blocks.Count];
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var localInfo = new LocalInfo[cfg.Blocks.Count * 3];
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_localInfo = new LocalInfo[cfg.Blocks.Count * 3];
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int localInfoCount = 0;
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int localInfoCount = 0;
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// The "visited" state is stored in the MSB of the local's value.
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const ulong VisitedMask = 1ul << 63;
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bool IsVisited(Operand local)
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{
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return (local.GetValueUnsafe() & VisitedMask) != 0;
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}
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void SetVisited(Operand local)
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{
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local.GetValueUnsafe() |= VisitedMask | (uint)++localInfoCount;
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}
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ref LocalInfo GetLocalInfo(Operand local)
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{
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Debug.Assert(local.Kind == OperandKind.LocalVariable);
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if (!IsVisited(local))
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{
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throw new InvalidOperationException("Local was not visisted yet. Used before defined?");
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}
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return ref localInfo[(uint)local.GetValueUnsafe() - 1];
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}
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for (int index = cfg.PostOrderBlocks.Length - 1; index >= 0; index--)
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for (int index = cfg.PostOrderBlocks.Length - 1; index >= 0; index--)
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{
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{
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BasicBlock block = cfg.PostOrderBlocks[index];
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BasicBlock block = cfg.PostOrderBlocks[index];
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@ -127,10 +133,8 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
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hasCall = true;
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hasCall = true;
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}
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}
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for (int i = 0; i < node.SourcesCount; i++)
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foreach (Operand source in node.SourcesUnsafe)
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{
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{
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Operand source = node.GetSource(i);
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if (source.Kind == OperandKind.LocalVariable)
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if (source.Kind == OperandKind.LocalVariable)
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{
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{
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GetLocalInfo(source).SetBlockIndex(block.Index);
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GetLocalInfo(source).SetBlockIndex(block.Index);
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@ -151,10 +155,8 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
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}
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}
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}
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}
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for (int i = 0; i < node.DestinationsCount; i++)
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foreach (Operand dest in node.DestinationsUnsafe)
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{
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{
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Operand dest = node.GetDestination(i);
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if (dest.Kind == OperandKind.LocalVariable)
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if (dest.Kind == OperandKind.LocalVariable)
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{
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{
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if (IsVisited(dest))
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if (IsVisited(dest))
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@ -163,13 +165,14 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
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}
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}
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else
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else
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{
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{
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SetVisited(dest);
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dest.NumberLocal(++localInfoCount);
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if (localInfoCount > localInfo.Length)
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if (localInfoCount > _localInfo.Length)
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{
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{
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Array.Resize(ref localInfo, localInfoCount * 2);
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Array.Resize(ref _localInfo, localInfoCount * 2);
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}
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}
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SetVisited(dest);
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GetLocalInfo(dest) = new LocalInfo(dest.Type, UsesCount(dest), block.Index);
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GetLocalInfo(dest) = new LocalInfo(dest.Type, UsesCount(dest), block.Index);
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}
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}
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}
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}
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@ -187,7 +190,7 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
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}
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}
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}
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}
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blockInfo[block.Index] = new BlockInfo(hasCall, intFixedRegisters, vecFixedRegisters);
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_blockInfo[block.Index] = new BlockInfo(hasCall, intFixedRegisters, vecFixedRegisters);
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}
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}
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int sequence = 0;
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int sequence = 0;
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@ -196,7 +199,7 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
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{
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{
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BasicBlock block = cfg.PostOrderBlocks[index];
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BasicBlock block = cfg.PostOrderBlocks[index];
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BlockInfo blkInfo = blockInfo[block.Index];
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ref BlockInfo blkInfo = ref _blockInfo[block.Index];
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int intLocalFreeRegisters = intFreeRegisters & ~blkInfo.IntFixedRegisters;
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int intLocalFreeRegisters = intFreeRegisters & ~blkInfo.IntFixedRegisters;
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int vecLocalFreeRegisters = vecFreeRegisters & ~blkInfo.VecFixedRegisters;
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int vecLocalFreeRegisters = vecFreeRegisters & ~blkInfo.VecFixedRegisters;
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@ -227,23 +230,23 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
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Debug.Assert(info.UsesAllocated <= info.Uses);
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Debug.Assert(info.UsesAllocated <= info.Uses);
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if (info.Register != -1)
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if (info.Register != default)
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{
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{
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Operand reg = Register(info.Register, local.Type.ToRegisterType(), local.Type);
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if (info.UsesAllocated == info.Uses)
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if (info.UsesAllocated == info.Uses)
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{
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{
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Register reg = info.Register.GetRegister();
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if (local.Type.IsInteger())
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if (local.Type.IsInteger())
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{
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{
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intLocalFreeRegisters |= 1 << info.Register;
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intLocalFreeRegisters |= 1 << reg.Index;
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}
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}
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else
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else
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{
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{
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vecLocalFreeRegisters |= 1 << info.Register;
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vecLocalFreeRegisters |= 1 << reg.Index;
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}
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}
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}
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}
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return reg;
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return info.Register;
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}
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}
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else
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else
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{
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{
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info.Temp = temp;
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info.Temp = temp;
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}
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}
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Operation fillOp = Operation(Instruction.Fill, temp, Const(info.SpillOffset));
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Operation fillOp = Operation(Instruction.Fill, temp, info.SpillOffset);
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block.Operations.AddBefore(node, fillOp);
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block.Operations.AddBefore(node, fillOp);
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{
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{
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ref LocalInfo info = ref GetLocalInfo(source);
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ref LocalInfo info = ref GetLocalInfo(source);
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if (info.Register == -1)
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if (info.Register == default)
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{
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{
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Operation fillOp = Operation(Instruction.Fill, node.Destination, Const(info.SpillOffset));
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Operation fillOp = Operation(Instruction.Fill, node.Destination, info.SpillOffset);
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block.Operations.AddBefore(node, fillOp);
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block.Operations.AddBefore(node, fillOp);
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block.Operations.Remove(node);
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block.Operations.Remove(node);
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if (!folded)
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if (!folded)
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{
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{
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for (int i = 0; i < node.SourcesCount; i++)
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foreach (ref Operand source in node.SourcesUnsafe)
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{
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{
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Operand source = node.GetSource(i);
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if (source.Kind == OperandKind.LocalVariable)
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if (source.Kind == OperandKind.LocalVariable)
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{
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{
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node.SetSource(i, AllocateRegister(source));
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source = AllocateRegister(source);
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}
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}
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else if (source.Kind == OperandKind.Memory)
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else if (source.Kind == OperandKind.Memory)
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{
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{
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@ -323,10 +324,8 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
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int intLocalAsg = 0;
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int intLocalAsg = 0;
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int vecLocalAsg = 0;
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int vecLocalAsg = 0;
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for (int i = 0; i < node.DestinationsCount; i++)
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foreach (ref Operand dest in node.DestinationsUnsafe)
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{
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{
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Operand dest = node.GetDestination(i);
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if (dest.Kind != OperandKind.LocalVariable)
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if (dest.Kind != OperandKind.LocalVariable)
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{
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{
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continue;
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continue;
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@ -344,7 +343,7 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
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{
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{
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int selectedReg = BitOperations.TrailingZeroCount(mask);
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int selectedReg = BitOperations.TrailingZeroCount(mask);
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info.Register = selectedReg;
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info.Register = Register(selectedReg, info.Type.ToRegisterType(), info.Type);
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if (dest.Type.IsInteger())
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if (dest.Type.IsInteger())
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{
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{
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}
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}
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else
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else
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{
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{
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info.Register = -1;
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info.Register = default;
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info.SpillOffset = stackAlloc.Allocate(dest.Type.GetSizeInBytes());
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info.SpillOffset = Const(stackAlloc.Allocate(dest.Type.GetSizeInBytes()));
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}
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}
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}
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}
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Debug.Assert(info.UsesAllocated <= info.Uses);
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Debug.Assert(info.UsesAllocated <= info.Uses);
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if (info.Register != -1)
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if (info.Register != default)
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{
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{
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node.SetDestination(i, Register(info.Register, dest.Type.ToRegisterType(), dest.Type));
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dest = info.Register;
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}
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}
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else
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else
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{
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{
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@ -386,9 +385,9 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
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info.Temp = temp;
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info.Temp = temp;
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}
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}
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node.SetDestination(i, temp);
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dest = temp;
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Operation spillOp = Operation(Instruction.Spill, default, Const(info.SpillOffset), temp);
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Operation spillOp = Operation(Instruction.Spill, default, info.SpillOffset, temp);
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block.Operations.AddAfter(node, spillOp);
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block.Operations.AddAfter(node, spillOp);
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@ -97,16 +97,18 @@ namespace ARMeilleure.CodeGen.X86
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Logger.StartPass(PassName.Optimization);
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Logger.StartPass(PassName.Optimization);
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if ((cctx.Options & CompilerOptions.SsaForm) != 0 &&
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if (cctx.Options.HasFlag(CompilerOptions.Optimize))
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(cctx.Options & CompilerOptions.Optimize) != 0)
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{
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{
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Optimizer.RunPass(cfg);
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if (cctx.Options.HasFlag(CompilerOptions.SsaForm))
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{
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Optimizer.RunPass(cfg);
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}
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BlockPlacement.RunPass(cfg);
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}
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}
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X86Optimizer.RunPass(cfg);
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X86Optimizer.RunPass(cfg);
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BlockPlacement.RunPass(cfg);
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Logger.EndPass(PassName.Optimization, cfg);
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Logger.EndPass(PassName.Optimization, cfg);
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Logger.StartPass(PassName.PreAllocation);
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Logger.StartPass(PassName.PreAllocation);
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Logger.StartPass(PassName.RegisterAllocation);
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Logger.StartPass(PassName.RegisterAllocation);
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if ((cctx.Options & CompilerOptions.SsaForm) != 0)
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if (cctx.Options.HasFlag(CompilerOptions.SsaForm))
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{
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{
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Ssa.Deconstruct(cfg);
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Ssa.Deconstruct(cfg);
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}
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}
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IRegisterAllocator regAlloc;
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IRegisterAllocator regAlloc;
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if ((cctx.Options & CompilerOptions.Lsra) != 0)
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if (cctx.Options.HasFlag(CompilerOptions.Lsra))
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{
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{
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regAlloc = new LinearScanAllocator();
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regAlloc = new LinearScanAllocator();
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}
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}
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@ -146,6 +146,7 @@ namespace ARMeilleure.IntermediateRepresentation
|
||||||
return BitConverter.Int64BitsToDouble((long)Value);
|
return BitConverter.Int64BitsToDouble((long)Value);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||||||
internal ref ulong GetValueUnsafe()
|
internal ref ulong GetValueUnsafe()
|
||||||
{
|
{
|
||||||
return ref _data->Value;
|
return ref _data->Value;
|
||||||
|
|
|
@ -53,8 +53,8 @@ namespace ARMeilleure.IntermediateRepresentation
|
||||||
public int DestinationsCount => _data->DestinationsCount;
|
public int DestinationsCount => _data->DestinationsCount;
|
||||||
public int SourcesCount => _data->SourcesCount;
|
public int SourcesCount => _data->SourcesCount;
|
||||||
|
|
||||||
private Span<Operand> Destinations => new(_data->Destinations, _data->DestinationsCount);
|
internal Span<Operand> DestinationsUnsafe => new(_data->Destinations, _data->DestinationsCount);
|
||||||
private Span<Operand> Sources => new(_data->Sources, _data->SourcesCount);
|
internal Span<Operand> SourcesUnsafe => new(_data->Sources, _data->SourcesCount);
|
||||||
|
|
||||||
public PhiOperation AsPhi()
|
public PhiOperation AsPhi()
|
||||||
{
|
{
|
||||||
|
@ -65,17 +65,17 @@ namespace ARMeilleure.IntermediateRepresentation
|
||||||
|
|
||||||
public Operand GetDestination(int index)
|
public Operand GetDestination(int index)
|
||||||
{
|
{
|
||||||
return Destinations[index];
|
return DestinationsUnsafe[index];
|
||||||
}
|
}
|
||||||
|
|
||||||
public Operand GetSource(int index)
|
public Operand GetSource(int index)
|
||||||
{
|
{
|
||||||
return Sources[index];
|
return SourcesUnsafe[index];
|
||||||
}
|
}
|
||||||
|
|
||||||
public void SetDestination(int index, Operand dest)
|
public void SetDestination(int index, Operand dest)
|
||||||
{
|
{
|
||||||
ref Operand curDest = ref Destinations[index];
|
ref Operand curDest = ref DestinationsUnsafe[index];
|
||||||
|
|
||||||
RemoveAssignment(curDest);
|
RemoveAssignment(curDest);
|
||||||
AddAssignment(dest);
|
AddAssignment(dest);
|
||||||
|
@ -85,7 +85,7 @@ namespace ARMeilleure.IntermediateRepresentation
|
||||||
|
|
||||||
public void SetSource(int index, Operand src)
|
public void SetSource(int index, Operand src)
|
||||||
{
|
{
|
||||||
ref Operand curSrc = ref Sources[index];
|
ref Operand curSrc = ref SourcesUnsafe[index];
|
||||||
|
|
||||||
RemoveUse(curSrc);
|
RemoveUse(curSrc);
|
||||||
AddUse(src);
|
AddUse(src);
|
||||||
|
@ -274,8 +274,8 @@ namespace ARMeilleure.IntermediateRepresentation
|
||||||
EnsureCapacity(ref result._data->Destinations, ref result._data->DestinationsCount, destCount);
|
EnsureCapacity(ref result._data->Destinations, ref result._data->DestinationsCount, destCount);
|
||||||
EnsureCapacity(ref result._data->Sources, ref result._data->SourcesCount, srcCount);
|
EnsureCapacity(ref result._data->Sources, ref result._data->SourcesCount, srcCount);
|
||||||
|
|
||||||
result.Destinations.Clear();
|
result.DestinationsUnsafe.Clear();
|
||||||
result.Sources.Clear();
|
result.SourcesUnsafe.Clear();
|
||||||
|
|
||||||
return result;
|
return result;
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in a new issue