mirror of
https://github.com/GreemDev/Ryujinx.git
synced 2024-12-25 17:15:46 +00:00
3dee712164
* Fix bindless/global memory elimination with inverted predicates * Shader cache version bump
68 lines
2.4 KiB
C#
68 lines
2.4 KiB
C#
using Ryujinx.Graphics.Shader.IntermediateRepresentation;
|
|
|
|
namespace Ryujinx.Graphics.Shader.Translation.Optimizations
|
|
{
|
|
static class Utils
|
|
{
|
|
private static Operation FindBranchSource(BasicBlock block)
|
|
{
|
|
foreach (BasicBlock sourceBlock in block.Predecessors)
|
|
{
|
|
if (sourceBlock.Operations.Count > 0)
|
|
{
|
|
if (sourceBlock.GetLastOp() is Operation lastOp && IsConditionalBranch(lastOp.Inst) && sourceBlock.Next == block)
|
|
{
|
|
return lastOp;
|
|
}
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
private static bool IsConditionalBranch(Instruction inst)
|
|
{
|
|
return inst == Instruction.BranchIfFalse || inst == Instruction.BranchIfTrue;
|
|
}
|
|
|
|
private static bool BlockConditionsMatch(BasicBlock currentBlock, BasicBlock queryBlock)
|
|
{
|
|
// Check if all the conditions for the query block are satisfied by the current block.
|
|
// Just checks the top-most conditional for now.
|
|
|
|
Operation currentBranch = FindBranchSource(currentBlock);
|
|
Operation queryBranch = FindBranchSource(queryBlock);
|
|
|
|
Operand currentCondition = currentBranch?.GetSource(0);
|
|
Operand queryCondition = queryBranch?.GetSource(0);
|
|
|
|
// The condition should be the same operand instance.
|
|
|
|
return currentBranch != null && queryBranch != null &&
|
|
currentBranch.Inst == queryBranch.Inst &&
|
|
currentCondition == queryCondition;
|
|
}
|
|
|
|
public static Operand FindLastOperation(Operand source, BasicBlock block)
|
|
{
|
|
if (source.AsgOp is PhiNode phiNode)
|
|
{
|
|
// This source can have a different value depending on a previous branch.
|
|
// Ensure that conditions met for that branch are also met for the current one.
|
|
// Prefer the latest sources for the phi node.
|
|
|
|
for (int i = phiNode.SourcesCount - 1; i >= 0; i--)
|
|
{
|
|
BasicBlock phiBlock = phiNode.GetBlock(i);
|
|
|
|
if (BlockConditionsMatch(block, phiBlock))
|
|
{
|
|
return phiNode.GetSource(i);
|
|
}
|
|
}
|
|
}
|
|
|
|
return source;
|
|
}
|
|
}
|
|
}
|