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Optimize HybridAllocator (#2637)

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* 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:
FICTURE7 2021-09-29 03:38:37 +04:00 • committed by GitHub
parent 1ae690ba2f
commit 312be74861
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4 changed files with 85 additions and 83 deletions
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16
ARMeilleure/CodeGen/X86/CodeGenerator.cs
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@ -97,16 +97,18 @@ namespace ARMeilleure.CodeGen.X86
Logger.StartPass(PassName.Optimization);
if ((cctx.Options & CompilerOptions.SsaForm) != 0 &&
(cctx.Options & CompilerOptions.Optimize) != 0)
if (cctx.Options.HasFlag(CompilerOptions.Optimize))
{
Optimizer.RunPass(cfg);
if (cctx.Options.HasFlag(CompilerOptions.SsaForm))
{
Optimizer.RunPass(cfg);
}
BlockPlacement.RunPass(cfg);
}
X86Optimizer.RunPass(cfg);
BlockPlacement.RunPass(cfg);
Logger.EndPass(PassName.Optimization, cfg);
Logger.StartPass(PassName.PreAllocation);
@ -119,14 +121,14 @@ namespace ARMeilleure.CodeGen.X86
Logger.StartPass(PassName.RegisterAllocation);
if ((cctx.Options & CompilerOptions.SsaForm) != 0)
if (cctx.Options.HasFlag(CompilerOptions.SsaForm))
{
Ssa.Deconstruct(cfg);
}
IRegisterAllocator regAlloc;
if ((cctx.Options & CompilerOptions.Lsra) != 0)
if (cctx.Options.HasFlag(CompilerOptions.Lsra))
{
regAlloc = new LinearScanAllocator();
}