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WIP sparse stuff

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riperiperi 2024-06-23 18:59:45 +01:00
parent acff1d8fa8
commit a3199f0b54
8 changed files with 303 additions and 73 deletions
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13
src/ARMeilleure/Instructions/InstEmitFlowHelper.cs
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@ -231,18 +231,7 @@ namespace ARMeilleure.Instructions
Const(3)
);
// TODO: could possibly make a fallback page that level 1 is filled with that contains dispatch stub on all pages
// Would save this load and the comparisons
// 16MB of the same value is a bit wasteful so it could replicate with remapping.
Operand fallback = !context.HasPtc ?
Const((long)context.FunctionTable.Fallback) :
Const((long)context.FunctionTable.Fallback, Ptc.DispatchFallbackSymbol);
Operand pageIsZero = context.ICompareEqual(page, Const(0L));
// Small trick to keep this branchless - if the page is zero, load a fallback table entry that always contains the dispatch stub.
hostAddress = context.Load(OperandType.I64, context.ConditionalSelect(pageIsZero, fallback, context.Add(page, index2)));
hostAddress = context.Load(OperandType.I64, context.Add(page, index2));
}
else
{