a731ab3a2a
* Start of the ARMeilleure project * Refactoring around the old IRAdapter, now renamed to PreAllocator * Optimize the LowestBitSet method * Add CLZ support and fix CLS implementation * Add missing Equals and GetHashCode overrides on some structs, misc small tweaks * Implement the ByteSwap IR instruction, and some refactoring on the assembler * Implement the DivideUI IR instruction and fix 64-bits IDIV * Correct constant operand type on CSINC * Move division instructions implementation to InstEmitDiv * Fix destination type for the ConditionalSelect IR instruction * Implement UMULH and SMULH, with new IR instructions * Fix some issues with shift instructions * Fix constant types for BFM instructions * Fix up new tests using the new V128 struct * Update tests * Move DIV tests to a separate file * Add support for calls, and some instructions that depends on them * Start adding support for SIMD & FP types, along with some of the related ARM instructions * Fix some typos and the divide instruction with FP operands * Fix wrong method call on Clz_V * Implement ARM FP & SIMD move instructions, Saddlv_V, and misc. fixes * Implement SIMD logical instructions and more misc. fixes * Fix PSRAD x86 instruction encoding, TRN, UABD and UABDL implementations * Implement float conversion instruction, merge in LDj3SNuD fixes, and some other misc. fixes * Implement SIMD shift instruction and fix Dup_V * Add SCVTF and UCVTF (vector, fixed-point) variants to the opcode table * Fix check with tolerance on tester * Implement FP & SIMD comparison instructions, and some fixes * Update FCVT (Scalar) encoding on the table to support the Half-float variants * Support passing V128 structs, some cleanup on the register allocator, merge LDj3SNuD fixes * Use old memory access methods, made a start on SIMD memory insts support, some fixes * Fix float constant passed to functions, save and restore non-volatile XMM registers, other fixes * Fix arguments count with struct return values, other fixes * More instructions * Misc. fixes and integrate LDj3SNuD fixes * Update tests * Add a faster linear scan allocator, unwinding support on windows, and other changes * Update Ryujinx.HLE * Update Ryujinx.Graphics * Fix V128 return pointer passing, RCX is clobbered * Update Ryujinx.Tests * Update ITimeZoneService * Stop using GetFunctionPointer as that can't be called from native code, misc. fixes and tweaks * Use generic GetFunctionPointerForDelegate method and other tweaks * Some refactoring on the code generator, assert on invalid operations and use a separate enum for intrinsics * Remove some unused code on the assembler * Fix REX.W prefix regression on float conversion instructions, add some sort of profiler * Add hardware capability detection * Fix regression on Sha1h and revert Fcm** changes * Add SSE2-only paths on vector extract and insert, some refactoring on the pre-allocator * Fix silly mistake introduced on last commit on CpuId * Generate inline stack probes when the stack allocation is too large * Initial support for the System-V ABI * Support multiple destination operands * Fix SSE2 VectorInsert8 path, and other fixes * Change placement of XMM callee save and restore code to match other compilers * Rename Dest to Destination and Inst to Instruction * Fix a regression related to calls and the V128 type * Add an extra space on comments to match code style * Some refactoring * Fix vector insert FP32 SSE2 path * Port over the ARM32 instructions * Avoid memory protection races on JIT Cache * Another fix on VectorInsert FP32 (thanks to LDj3SNuD * Float operands don't need to use the same register when VEX is supported * Add a new register allocator, higher quality code for hot code (tier up), and other tweaks * Some nits, small improvements on the pre allocator * CpuThreadState is gone * Allow changing CPU emulators with a config entry * Add runtime identifiers on the ARMeilleure project * Allow switching between CPUs through a config entry (pt. 2) * Change win10-x64 to win-x64 on projects * Update the Ryujinx project to use ARMeilleure * Ensure that the selected register is valid on the hybrid allocator * Allow exiting on returns to 0 (should fix test regression) * Remove register assignments for most used variables on the hybrid allocator * Do not use fixed registers as spill temp * Add missing namespace and remove unneeded using * Address PR feedback * Fix types, etc * Enable AssumeStrictAbiCompliance by default * Ensure that Spill and Fill don't load or store any more than necessary
390 lines
No EOL
11 KiB
C#
390 lines
No EOL
11 KiB
C#
using ARMeilleure.IntermediateRepresentation;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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namespace ARMeilleure.CodeGen.RegisterAllocators
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{
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class LiveInterval : IComparable<LiveInterval>
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{
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public const int NotFound = -1;
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private LiveInterval _parent;
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private SortedSet<int> _usePositions;
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public int UsesCount => _usePositions.Count;
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private List<LiveRange> _ranges;
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private SortedList<int, LiveInterval> _childs;
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public bool IsSplit => _childs.Count != 0;
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public Operand Local { get; }
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public Register Register { get; set; }
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public int SpillOffset { get; private set; }
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public bool IsSpilled => SpillOffset != -1;
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public bool IsFixed { get; }
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public bool IsEmpty => _ranges.Count == 0;
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public LiveInterval(Operand local = null, LiveInterval parent = null)
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{
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Local = local;
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_parent = parent ?? this;
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_usePositions = new SortedSet<int>();
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_ranges = new List<LiveRange>();
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_childs = new SortedList<int, LiveInterval>();
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SpillOffset = -1;
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}
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public LiveInterval(Register register) : this()
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{
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IsFixed = true;
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Register = register;
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}
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public void SetStart(int position)
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{
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if (_ranges.Count != 0)
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{
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Debug.Assert(position != _ranges[0].End);
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_ranges[0] = new LiveRange(position, _ranges[0].End);
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}
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else
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{
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_ranges.Add(new LiveRange(position, position + 1));
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}
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}
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public int GetStart()
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{
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if (_ranges.Count == 0)
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{
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throw new InvalidOperationException("Empty interval.");
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}
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return _ranges[0].Start;
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}
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public void SetEnd(int position)
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{
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if (_ranges.Count != 0)
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{
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int lastIdx = _ranges.Count - 1;
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Debug.Assert(position != _ranges[lastIdx].Start);
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_ranges[lastIdx] = new LiveRange(_ranges[lastIdx].Start, position);
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}
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else
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{
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_ranges.Add(new LiveRange(position, position + 1));
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}
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}
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public int GetEnd()
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{
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if (_ranges.Count == 0)
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{
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throw new InvalidOperationException("Empty interval.");
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}
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return _ranges[_ranges.Count - 1].End;
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}
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public void AddRange(int start, int end)
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{
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if (start >= end)
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{
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throw new ArgumentException("Invalid range start position " + start + ", " + end);
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}
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int index = _ranges.BinarySearch(new LiveRange(start, end));
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if (index >= 0)
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{
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// New range insersects with an existing range, we need to remove
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// all the intersecting ranges before adding the new one.
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// We also extend the new range as needed, based on the values of
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// the existing ranges being removed.
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int lIndex = index;
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int rIndex = index;
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while (lIndex > 0 && _ranges[lIndex - 1].End >= start)
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{
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lIndex--;
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}
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while (rIndex + 1 < _ranges.Count && _ranges[rIndex + 1].Start <= end)
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{
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rIndex++;
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}
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if (start > _ranges[lIndex].Start)
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{
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start = _ranges[lIndex].Start;
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}
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if (end < _ranges[rIndex].End)
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{
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end = _ranges[rIndex].End;
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}
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_ranges.RemoveRange(lIndex, (rIndex - lIndex) + 1);
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InsertRange(lIndex, start, end);
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}
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else
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{
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InsertRange(~index, start, end);
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}
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}
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private void InsertRange(int index, int start, int end)
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{
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// Here we insert a new range on the ranges list.
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// If possible, we extend an existing range rather than inserting a new one.
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// We can extend an existing range if any of the following conditions are true:
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// - The new range starts right after the end of the previous range on the list.
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// - The new range ends right before the start of the next range on the list.
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// If both cases are true, we can extend either one. We prefer to extend the
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// previous range, and then remove the next one, but theres no specific reason
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// for that, extending either one will do.
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int? extIndex = null;
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if (index > 0 && _ranges[index - 1].End == start)
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{
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start = _ranges[index - 1].Start;
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extIndex = index - 1;
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}
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if (index < _ranges.Count && _ranges[index].Start == end)
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{
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end = _ranges[index].End;
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if (extIndex.HasValue)
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{
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_ranges.RemoveAt(index);
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}
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else
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{
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extIndex = index;
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}
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}
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if (extIndex.HasValue)
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{
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_ranges[extIndex.Value] = new LiveRange(start, end);
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}
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else
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{
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_ranges.Insert(index, new LiveRange(start, end));
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}
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}
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public void AddUsePosition(int position)
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{
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_usePositions.Add(position);
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}
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public bool Overlaps(int position)
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{
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return _ranges.BinarySearch(new LiveRange(position, position + 1)) >= 0;
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}
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public bool Overlaps(LiveInterval other)
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{
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foreach (LiveRange range in other._ranges)
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{
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if (_ranges.BinarySearch(range) >= 0)
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{
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return true;
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}
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}
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return false;
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}
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public int GetOverlapPosition(LiveInterval other)
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{
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foreach (LiveRange range in other._ranges)
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{
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int overlapIndex = _ranges.BinarySearch(range);
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if (overlapIndex >= 0)
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{
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// It's possible that we have multiple overlaps within a single interval,
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// in this case, we pick the one with the lowest start position, since
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// we return the first overlap position.
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while (overlapIndex > 0 && _ranges[overlapIndex - 1].End > range.Start)
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{
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overlapIndex--;
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}
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LiveRange overlappingRange = _ranges[overlapIndex];
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return overlappingRange.Start;
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}
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}
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return NotFound;
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}
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public IEnumerable<LiveInterval> SplitChilds()
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{
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return _childs.Values;
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}
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public IEnumerable<int> UsePositions()
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{
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return _usePositions;
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}
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public int FirstUse()
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{
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if (_usePositions.Count == 0)
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{
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return NotFound;
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}
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return _usePositions.First();
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}
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public int NextUseAfter(int position)
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{
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foreach (int usePosition in _usePositions)
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{
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if (usePosition >= position)
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{
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return usePosition;
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}
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}
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return NotFound;
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}
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public LiveInterval Split(int position)
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{
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LiveInterval right = new LiveInterval(Local, _parent);
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int splitIndex = 0;
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for (; splitIndex < _ranges.Count; splitIndex++)
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{
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LiveRange range = _ranges[splitIndex];
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if (position > range.Start && position <= range.End)
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{
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right._ranges.Add(new LiveRange(position, range.End));
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range = new LiveRange(range.Start, position);
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_ranges[splitIndex++] = range;
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break;
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}
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if (range.Start >= position)
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{
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break;
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}
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}
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if (splitIndex < _ranges.Count)
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{
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int count = _ranges.Count - splitIndex;
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right._ranges.AddRange(_ranges.GetRange(splitIndex, count));
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_ranges.RemoveRange(splitIndex, count);
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}
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foreach (int usePosition in _usePositions.Where(x => x >= position))
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{
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right._usePositions.Add(usePosition);
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}
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_usePositions.RemoveWhere(x => x >= position);
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Debug.Assert(_ranges.Count != 0, "Left interval is empty after split.");
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Debug.Assert(right._ranges.Count != 0, "Right interval is empty after split.");
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AddSplitChild(right);
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return right;
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}
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private void AddSplitChild(LiveInterval child)
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{
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Debug.Assert(!child.IsEmpty, "Trying to insert a empty interval.");
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_parent._childs.Add(child.GetStart(), child);
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}
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public LiveInterval GetSplitChild(int position)
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{
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if (Overlaps(position))
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{
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return this;
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}
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foreach (LiveInterval splitChild in _childs.Values)
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{
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if (splitChild.Overlaps(position))
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{
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return splitChild;
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}
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}
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return null;
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}
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public bool TrySpillWithSiblingOffset()
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{
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foreach (LiveInterval splitChild in _parent._childs.Values)
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{
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if (splitChild.IsSpilled)
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{
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Spill(splitChild.SpillOffset);
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return true;
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}
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}
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return false;
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}
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public void Spill(int offset)
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{
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SpillOffset = offset;
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}
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public int CompareTo(LiveInterval other)
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{
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if (_ranges.Count == 0 || other._ranges.Count == 0)
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{
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return _ranges.Count.CompareTo(other._ranges.Count);
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}
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return _ranges[0].Start.CompareTo(other._ranges[0].Start);
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}
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public override string ToString()
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{
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return string.Join("; ", _ranges);
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}
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}
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} |