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PPTC & Pool Enhancements. (#1968)

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* PPTC & Pool Enhancements.

* Avoid buffer allocations in CodeGenContext.GetCode(). Avoid stream allocations in PTC.PtcInfo.

Refactoring/nits.

* Use XXHash128, for Ptc.Load & Ptc.Save, x10 faster than Md5.

* Why not a nice Span.

* Added a simple PtcFormatter library for deserialization/serialization, which does not require reflection, in use at PtcJumpTable and PtcProfiler; improves maintainability and simplicity/readability of affected code.

* Nits.

* Revert #1987.

* Revert "Revert #1987."

This reverts commit 998be765cf.
This commit is contained in:
LDj3SNuD 2021-02-22 03:23:48 +01:00 • committed by GitHub
parent 1586880114
commit dc0adb533d
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20 changed files with 777 additions and 603 deletions
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15
ARMeilleure/CodeGen/X86/CodeGenContext.cs
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@ -2,6 +2,7 @@ using ARMeilleure.CodeGen.RegisterAllocators;
using ARMeilleure.Common;
using ARMeilleure.IntermediateRepresentation;
using ARMeilleure.Translation.PTC;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
@ -301,15 +302,13 @@ namespace ARMeilleure.CodeGen.X86
{
Assembler assembler = new Assembler(codeStream, _ptcInfo);
byte[] buffer;
for (int index = 0; index < _jumps.Count; index++)
{
Jump jump = _jumps[index];
buffer = new byte[jump.JumpPosition - _stream.Position];
Span<byte> buffer = new byte[jump.JumpPosition - _stream.Position];
_stream.Read(buffer, 0, buffer.Length);
_stream.Read(buffer);
_stream.Seek(_ptcDisabled ? ReservedBytesForJump : jump.InstSize, SeekOrigin.Current);
codeStream.Write(buffer);
@ -324,13 +323,7 @@ namespace ARMeilleure.CodeGen.X86
}
}
buffer = new byte[_stream.Length - _stream.Position];
_stream.Read(buffer, 0, buffer.Length);
codeStream.Write(buffer);
_ptcInfo?.WriteCode(codeStream);
_stream.CopyTo(codeStream);
return codeStream.ToArray();
}