DXIL Debugger support for DXOp::IsHelperLane

renderdoc/driver/shaders/dxil/dxil_debug.cpp

@@ -3156,6 +3156,12 @@ bool ThreadState::ExecuteInstruction(DebugAPIWrapper *apiWrapper,
             result.value = a.value;
             break;
           }
+          case DXOp::IsHelperLane:
+          {
+            // Helper lanes don't have state
+            result.value.u32v[0] = m_State ? 0 : 1;
+            break;
+          }
           // Likely to implement when required
           case DXOp::UAddc:
           case DXOp::USubb:
@@ -3207,7 +3213,6 @@ bool ThreadState::ExecuteInstruction(DebugAPIWrapper *apiWrapper,
           case DXOp::WriteSamplerFeedbackBias:
           case DXOp::WriteSamplerFeedbackLevel:
           case DXOp::WriteSamplerFeedbackGrad:
-          case DXOp::IsHelperLane:
           case DXOp::BarrierByMemoryType:
           case DXOp::BarrierByMemoryHandle:
           case DXOp::BarrierByNodeRecordHandle:

renderdoc/driver/shaders/dxil/dxil_reflect.cpp

@@ -1946,7 +1946,6 @@ rdcstr Program::GetDebugStatus()
               case DXOp::RayQuery_CommittedInstanceContributionToHitGroupIndex:
               case DXOp::Unpack4x8:
               case DXOp::Pack4x8:
-              case DXOp::IsHelperLane:
               case DXOp::QuadVote:
               case DXOp::TextureGatherRaw:
               case DXOp::TextureStoreSample: