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Remove register assignments for most used variables on the hybrid allocator

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This commit is contained in:
gdkchan 2019-08-02 21:24:06 -03:00
parent 2fde9f96a4
commit 9c311d0c0a
1 changed files with 0 additions and 46 deletions
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46
ARMeilleure/CodeGen/RegisterAllocators/HybridAllocator.cs
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@ -153,52 +153,6 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
blockInfo[block.Index] = new BlockInfo(hasCall, intFixedRegisters, vecFixedRegisters);
}
int intReservedCount = 0;
int vecReservedCount = 0;
foreach (LocalInfo info in locInfo.OrderByDescending(x => x.Uses))
{
if (info.Type.IsInteger() && intReservedCount < 7)
{
int selectedReg = BitUtils.HighestBitSet(intFreeRegisters & ~regMasks.IntCallerSavedRegisters);
if (selectedReg >= 0)
{
int mask = 1 << selectedReg;
intFreeRegisters &= ~mask;
intUsedRegisters |= mask;
info.PreAllocated = true;
info.Register = selectedReg;
intReservedCount++;
}
}
else if (!info.Type.IsInteger() && vecReservedCount < 7)
{
int selectedReg = BitUtils.HighestBitSet(vecFreeRegisters & ~regMasks.VecCallerSavedRegisters);
if (selectedReg >= 0)
{
int mask = 1 << selectedReg;
vecFreeRegisters &= ~mask;
vecUsedRegisters |= mask;
info.PreAllocated = true;
info.Register = selectedReg;
vecReservedCount++;
}
}
if (intReservedCount + vecReservedCount == 14)
{
break;
}
}
int sequence = 0;
for (int index = cfg.PostOrderBlocks.Length - 1; index >= 0; index--)