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ryujinx-final/Ryujinx.Graphics.Shader/IntermediateRepresentation/BasicBlock.cs
gdkchan 49f970d5bd
Implement CAL and RET shader instructions (#1618)
* Add support for CAL and RET shader instructions

* Remove unused stuff

* Fix a bug that could cause the wrong values to be passed to a function

* Avoid repopulating function id dictionary every time

* PR feedback

* Fix vertex shader A/B merge
2020-10-25 17:00:44 -03:00

62 lines
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1.5 KiB
C#

using System.Collections.Generic;
namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
{
class BasicBlock
{
public int Index { get; set; }
public LinkedList<INode> Operations { get; }
private BasicBlock _next;
private BasicBlock _branch;
public BasicBlock Next
{
get => _next;
set => _next = AddSuccessor(_next, value);
}
public BasicBlock Branch
{
get => _branch;
set => _branch = AddSuccessor(_branch, value);
}
public bool HasBranch => _branch != null;
public bool Reachable => Index == 0 || Predecessors.Count != 0;
public List<BasicBlock> Predecessors { get; }
public HashSet<BasicBlock> DominanceFrontiers { get; }
public BasicBlock ImmediateDominator { get; set; }
public BasicBlock()
{
Operations = new LinkedList<INode>();
Predecessors = new List<BasicBlock>();
DominanceFrontiers = new HashSet<BasicBlock>();
}
public BasicBlock(int index) : this()
{
Index = index;
}
private BasicBlock AddSuccessor(BasicBlock oldBlock, BasicBlock newBlock)
{
oldBlock?.Predecessors.Remove(this);
newBlock?.Predecessors.Add(this);
return newBlock;
}
public INode GetLastOp()
{
return Operations.Last?.Value;
}
}
}