* 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.
* Added support for offline invalidation, via PPTC, of low cq translations replaced by high cq translations; both on a single run and between runs.
Added invalidation of .cache files in the event of reuse on a different user operating system.
Added .info and .cache files invalidation in case of a failed stream decompression.
Nits.
* InternalVersion = 1712;
* Nits.
* Address comment.
* Get rid of BinaryFormatter.
Nits.
* Move Ptc.LoadTranslations().
Nits.
* Nits.
* Fixed corner cases (in case backup copies have to be used). Added save logs.
* Not core fixes.
* Complement to the previous commit. Added load logs. Removed BinaryFormatter leftovers.
* Add LoadTranslations log.
* Nits.
* Removed the search and management of LowCq overlapping functions.
* Final increment of .info and .cache flags.
* Nit.
* Free up memory allocated by Pools during any PPTC translations at boot time.
* Nit due to rebase.
* Start of JIT garbage collection improvements
- thread static pool for Operand, MemoryOperand, Operation
- Operands and Operations are always to be constructed via their static
helper classes, so they can be pooled.
- removing LinkedList from Node for sources/destinations (replaced with
List<>s for now, but probably could do arrays since size is bounded)
- removing params constructors from Node
- LinkedList<> to List<> with Clear() for Operand assignments/uses
- ThreadStaticPool is very simple and basically just exists for the
purpose of our specific translation allocation problem. Right now it
will stay at the worst case allocation count for that thread (so far) -
the pool can never shrink.
- Still some cases of Operand[] that haven't been removed yet. Will need
to evaluate them (eg. is there a reasonable max number of params for
Calls?)
* ConcurrentStack instead of ConcurrentQueue for Rejit
* Optimize some parts of LSRA
- BitMap now operates on 64-bit int rather than 32-bit
- BitMap is now pooled in a ThreadStatic pool (within lrsa)
- BitMap now is now its own iterator. Marginally speeds up iterating
through the bits.
- A few cases where enumerators were generated have been converted to
forms that generate less garbage.
- New data structure for sorting _usePositions in LiveIntervals. Much
faster split, NextUseAfter, initial insertion. Random insertion is
slightly slower.
- That last one is WIP since you need to insert the values backwards. It
would be ideal if it just flipped it for you, uncomplicating things on
the caller side.
* Use a static pool of thread static pools. (yes.)
Prevents each execution thread creating its own lowCq pool and making me cry.
* Move constant value to top, change naming convention.
* Fix iteration of memory operands.
* Increase max thread count.
* Address Feedback
