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Code Issues Releases Activity

Propagate Shader phi nodes with the same source value from all blocks (#3457)

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* Propagate Shader phi nodes with the same source value from all incoming blocks

* Shader cache version bump
This commit is contained in:
gdkchan 2022-07-11 19:36:58 -03:00 committed by GitHub
parent f4c47f3c9a
commit 4523a73f75
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 54 additions and 1 deletions
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2
Ryujinx.Graphics.Gpu/Shader/DiskCache/DiskCacheHostStorage.cs
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@ -21,7 +21,7 @@ namespace Ryujinx.Graphics.Gpu.Shader.DiskCache
private const ushort FileFormatVersionMajor = 1;
private const ushort FileFormatVersionMinor = 1;
private const uint FileFormatVersionPacked = ((uint)FileFormatVersionMajor << 16) | FileFormatVersionMinor;
private const uint CodeGenVersion = 3069;
private const uint CodeGenVersion = 3457;
private const string SharedTocFileName = "shared.toc";
private const string SharedDataFileName = "shared.data";

53
Ryujinx.Graphics.Shader/Translation/Optimizations/Optimizer.cs
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@ -45,6 +45,11 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
if (!(node.Value is Operation operation) || isUnused)
{
if (node.Value is PhiNode phi && !isUnused)
{
isUnused = PropagatePhi(phi);
}
if (isUnused)
{
RemoveNode(block, node);
@ -101,6 +106,7 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
{
// Propagate copy source operand to all uses of
// the destination operand.
Operand dest = copyOp.Dest;
Operand src = copyOp.GetSource(0);
@ -118,6 +124,53 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
}
}
private static bool PropagatePhi(PhiNode phi)
{
// If all phi sources are the same, we can propagate it and remove the phi.
Operand firstSrc = phi.GetSource(0);
for (int index = 1; index < phi.SourcesCount; index++)
{
if (!IsSameOperand(firstSrc, phi.GetSource(index)))
{
return false;
}
}
// All sources are equal, we can propagate the value.
Operand dest = phi.Dest;
INode[] uses = dest.UseOps.ToArray();
foreach (INode useNode in uses)
{
for (int index = 0; index < useNode.SourcesCount; index++)
{
if (useNode.GetSource(index) == dest)
{
useNode.SetSource(index, firstSrc);
}
}
}
return true;
}
private static bool IsSameOperand(Operand x, Operand y)
{
if (x.Type != y.Type || x.Value != y.Value)
{
return false;
}
return x.Type == OperandType.Attribute ||
x.Type == OperandType.AttributePerPatch ||
x.Type == OperandType.Constant ||
x.Type == OperandType.ConstantBuffer;
}
private static bool PropagatePack(Operation packOp)
{
// Propagate pack source operands to uses by unpack