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f0562b9c75
* Minor refactoring of the pre-allocator * Avoid LoadArgument copies * PPTC version bump
57 lines
1.8 KiB
C#
57 lines
1.8 KiB
C#
using ARMeilleure.IntermediateRepresentation;
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using System;
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using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
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namespace ARMeilleure.CodeGen
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{
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static class PreAllocatorCommon
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{
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public static void Propagate(ref Span<Operation> buffer, Operand dest, Operand value)
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{
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ReadOnlySpan<Operation> uses = dest.GetUses(ref buffer);
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foreach (Operation use in uses)
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{
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for (int srcIndex = 0; srcIndex < use.SourcesCount; srcIndex++)
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{
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Operand useSrc = use.GetSource(srcIndex);
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if (useSrc == dest)
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{
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use.SetSource(srcIndex, value);
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}
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else if (useSrc.Kind == OperandKind.Memory)
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{
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MemoryOperand memoryOp = useSrc.GetMemory();
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Operand baseAddr = memoryOp.BaseAddress;
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Operand index = memoryOp.Index;
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bool changed = false;
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if (baseAddr == dest)
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{
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baseAddr = value;
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changed = true;
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}
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if (index == dest)
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{
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index = value;
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changed = true;
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}
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if (changed)
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{
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use.SetSource(srcIndex, MemoryOp(
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useSrc.Type,
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baseAddr,
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index,
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memoryOp.Scale,
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memoryOp.Displacement));
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}
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}
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}
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}
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}
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}
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}
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