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Extend bindless elimination to see through Phis with the same results (#5957)

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* Extend bindless elimination to see through Phis with the same results

* Shader cache version bump
This commit is contained in:
gdkchan 2023-11-19 15:10:44 -03:00 committed by GitHub
parent aa96dcb1be
commit 0b58f46266
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 58 additions and 2 deletions
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2
src/Ryujinx.Graphics.Gpu/Shader/DiskCache/DiskCacheHostStorage.cs
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@ -22,7 +22,7 @@ namespace Ryujinx.Graphics.Gpu.Shader.DiskCache
private const ushort FileFormatVersionMajor = 1;
private const ushort FileFormatVersionMinor = 2;
private const uint FileFormatVersionPacked = ((uint)FileFormatVersionMajor << 16) | FileFormatVersionMinor;
private const uint CodeGenVersion = 5791;
private const uint CodeGenVersion = 5957;
private const string SharedTocFileName = "shared.toc";
private const string SharedDataFileName = "shared.data";

58
src/Ryujinx.Graphics.Shader/Translation/Optimizations/BindlessElimination.cs
View file

@ -55,7 +55,7 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
continue;
}
if (bindlessHandle.AsgOp is not Operation handleCombineOp)
if (!TryGetOperation(bindlessHandle.AsgOp, out Operation handleCombineOp))
{
continue;
}
@ -199,9 +199,64 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
}
}
private static bool TryGetOperation(INode asgOp, out Operation outOperation)
{
if (asgOp is PhiNode phi)
{
// If we have a phi, let's check if all inputs are effectively the same value.
// If so, we can "see through" the phi and pick any of the inputs (since they are all the same).
Operand firstSrc = phi.GetSource(0);
for (int index = 1; index < phi.SourcesCount; index++)
{
if (!IsSameOperand(firstSrc, phi.GetSource(index)))
{
outOperation = null;
return false;
}
}
asgOp = firstSrc.AsgOp;
}
if (asgOp is Operation operation)
{
outOperation = operation;
return true;
}
outOperation = null;
return false;
}
private static bool IsSameOperand(Operand x, Operand y)
{
if (x.Type == y.Type && x.Type == OperandType.LocalVariable)
{
return x.AsgOp is Operation xOp &&
y.AsgOp is Operation yOp &&
xOp.Inst == Instruction.BitwiseOr &&
yOp.Inst == Instruction.BitwiseOr &&
AreBothEqualConstantBuffers(xOp.GetSource(0), yOp.GetSource(0)) &&
AreBothEqualConstantBuffers(xOp.GetSource(1), yOp.GetSource(1));
}
return false;
}
private static bool AreBothEqualConstantBuffers(Operand x, Operand y)
{
return x.Type == y.Type && x.Value == y.Value && x.Type == OperandType.ConstantBuffer;
}
private static Operand GetSourceForMaskedHandle(Operation asgOp, uint mask)
{
// Assume it was already checked that the operation is bitwise AND.
Operand src0 = asgOp.GetSource(0);
Operand src1 = asgOp.GetSource(1);
@ -210,6 +265,7 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
// We can't check if the mask matches here as both operands are from a constant buffer.
// Be optimistic and assume it matches. Avoid constant buffer 1 as official drivers
// uses this one to store compiler constants.
return src0.GetCbufSlot() == 1 ? src1 : src0;
}
else if (src0.Type == OperandType.ConstantBuffer && src1.Type == OperandType.Constant)