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CPU: Avoid argument value copies on the JIT (#4484)

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* Minor refactoring of the pre-allocator

* Avoid LoadArgument copies

* PPTC version bump
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gdkchan 2023-03-08 19:25:35 -03:00 • committed by GitHub
parent b8556530f2
commit f0562b9c75
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6 changed files with 766 additions and 708 deletions
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57
ARMeilleure/CodeGen/PreAllocatorCommon.cs Normal file
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using ARMeilleure.IntermediateRepresentation;
using System;
using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
namespace ARMeilleure.CodeGen
{
static class PreAllocatorCommon
{
public static void Propagate(ref Span<Operation> buffer, Operand dest, Operand value)
{
ReadOnlySpan<Operation> uses = dest.GetUses(ref buffer);
foreach (Operation use in uses)
{
for (int srcIndex = 0; srcIndex < use.SourcesCount; srcIndex++)
{
Operand useSrc = use.GetSource(srcIndex);
if (useSrc == dest)
{
use.SetSource(srcIndex, value);
}
else if (useSrc.Kind == OperandKind.Memory)
{
MemoryOperand memoryOp = useSrc.GetMemory();
Operand baseAddr = memoryOp.BaseAddress;
Operand index = memoryOp.Index;
bool changed = false;
if (baseAddr == dest)
{
baseAddr = value;
changed = true;
}
if (index == dest)
{
index = value;
changed = true;
}
if (changed)
{
use.SetSource(srcIndex, MemoryOp(
useSrc.Type,
baseAddr,
index,
memoryOp.Scale,
memoryOp.Displacement));
}
}
}
}
}
}
}