Revert "Stream handling simplified to avoid dictionary lookups in favor of array lookups with known indexes."

This reverts commit a84445ef2a.

PerfectNumbers.Core/HeuristicPrimeTester.cs

@@ -3,7 +3,6 @@ using System.Runtime.CompilerServices;
 using ILGPU.Runtime;
 using PerfectNumbers.Core.Gpu;
 using PerfectNumbers.Core.Gpu.Accelerators;
-using ILGPU;
 
 namespace PerfectNumbers.Core;
 
@@ -240,36 +239,33 @@ public sealed class HeuristicPrimeTester
 	}
 
 
-	private static bool HeuristicTrialDivisionGpuDetectsDivisor(ulong n, ulong maxDivisorSquare, byte nMod10)
+	private bool HeuristicTrialDivisionGpuDetectsDivisor(ulong n, ulong maxDivisorSquare, byte nMod10)
 	{
 		// GpuPrimeWorkLimiter.Acquire();
 		var gpu = HeuristicPrimeTesterAccelerator.Rent(1);
-		var stream = gpu.Stream!;
+		var stream = gpu.Stream;
 		var kernel = gpu.HeuristicTrialDivisionKernel;
 		var flagView1D = gpu.HeuristicFlag.View;
+		var flagView = flagView1D.AsContiguous();
 
-		bool compositeDetected;
+		bool compositeDetected = false;
 		int compositeFlag = 0;
 
 		int groupALength = HeuristicPrimeSieves.GroupADivisors.Length;
 
 		flagView1D.CopyFromCPU(stream, ref compositeFlag, 1);
-		var tables = gpu.HeuristicGpuTables;
-        ArrayView1D<ulong, Stride1D.Dense> divisors = tables.GroupADivisors;
-        ArrayView1D<ulong, Stride1D.Dense> divisorSquares = tables.GroupADivisorSquares;
-
 		kernel.Launch(
 				stream!,
 				1,
 				groupALength,
-				flagView1D,
+				flagView,
 				n,
 				maxDivisorSquare,
-				divisors,
-				divisorSquares);
+				HeuristicGpuDivisorTableKind.GroupA,
+				gpu.HeuristicGpuTables);
 
 		flagView1D.CopyToCPU(stream, ref compositeFlag, 1);
-		stream.Synchronize();
+		stream!.Synchronize();
 
 		compositeDetected = compositeFlag != 0;
 
@@ -300,7 +296,7 @@ public sealed class HeuristicPrimeTester
 					stream,
 						1,
 						divisorLength,
-						flagView1D,
+						flagView,
 						n,
 						maxDivisorSquare,
 						tableKind,