diff --git a/IDEHelper/Backend/BeMCContext.cpp b/IDEHelper/Backend/BeMCContext.cpp
index 97fc4fbc..4cf5ed7e 100644
--- a/IDEHelper/Backend/BeMCContext.cpp
+++ b/IDEHelper/Backend/BeMCContext.cpp
@@ -5578,6 +5578,9 @@ void BeMCContext::DisableRegister(const BeMCOperand& operand, X64CPURegister reg
 	case X64Reg_RAX:
 		vregInfo->mDisableRAX = true;
 		break;
+	case X64Reg_RDX:
+		vregInfo->mDisableRDX = true;
+		break;
 	case X64Reg_SIL:
 		vregInfo->mDisableEx = true;
 		break;
@@ -9228,6 +9231,8 @@ bool BeMCContext::DoLegalization()
 									{
 										// This is to avoid overlap with PreserveRAX
 										DisableRegister(inst->mArg0, X64Reg_RAX);
+										if (preserveRDX)
+											DisableRegister(inst->mArg0, X64Reg_RDX);
 									}
 								}								
 								AllocInst(BeMCInstKind_Mov, inst->mArg0, mcRemaindier, instIdx++ + 1);
@@ -14709,7 +14714,7 @@ void BeMCContext::Generate(BeFunction* function)
 	mDbgPreferredRegs[32] = X64Reg_R8;*/
 
 	//mDbgPreferredRegs[8] = X64Reg_RAX;
-	//mDebugging = function->mName == "?Hey@Blurg@bf@@SAXXZ";
+	mDebugging = function->mName == "?Dequeue@?$Queue@Tint@@@Generic@Collections@System@bf@@QEAATint@@XZ";
 		//"?ColorizeCodeString@IDEUtils@IDE@bf@@SAXPEAVString@System@3@W4CodeKind@123@@Z";
 	//"?Main@Program@bf@@CAHPEAV?$Array1@PEAVString@System@bf@@@System@2@@Z";
 
diff --git a/IDEHelper/Compiler/BfCompiler.cpp b/IDEHelper/Compiler/BfCompiler.cpp
index 0baa40b2..0cb2fb97 100644
--- a/IDEHelper/Compiler/BfCompiler.cpp
+++ b/IDEHelper/Compiler/BfCompiler.cpp
@@ -428,6 +428,7 @@ BfCompiler::BfCompiler(BfSystem* bfSystem, bool isResolveOnly)
 	mTypeTypeDef = NULL;
 	mUnboundAttributeTypeDef = NULL;	
 	mValueTypeTypeDef = NULL;
+	mResultTypeDef = NULL;
 	mObsoleteAttributeTypeDef = NULL;
 	mErrorAttributeTypeDef = NULL;
 	mWarnAttributeTypeDef = NULL;
@@ -5923,6 +5924,7 @@ bool BfCompiler::DoCompile(const StringImpl& outputDirectory)
 	mFriendAttributeTypeDef = _GetRequiredType("System.FriendAttribute");
 	mCheckedAttributeTypeDef = _GetRequiredType("System.CheckedAttribute");
 	mUncheckedAttributeTypeDef = _GetRequiredType("System.UncheckedAttribute");
+	mResultTypeDef = _GetRequiredType("System.Result", 1);
 	mFunctionTypeDef = _GetRequiredType("System.Function");
 	mGCTypeDef = _GetRequiredType("System.GC");	
 	mGenericIEnumerableTypeDef = _GetRequiredType("System.Collections.Generic.IEnumerable");
diff --git a/IDEHelper/Compiler/BfCompiler.h b/IDEHelper/Compiler/BfCompiler.h
index e2a2ae01..1384b02f 100644
--- a/IDEHelper/Compiler/BfCompiler.h
+++ b/IDEHelper/Compiler/BfCompiler.h
@@ -345,6 +345,7 @@ public:
 	BfTypeDef* mStringTypeDef;
 	BfTypeDef* mTypeTypeDef;
 	BfTypeDef* mValueTypeTypeDef;	
+	BfTypeDef* mResultTypeDef;
 	BfTypeDef* mFunctionTypeDef;
 	BfTypeDef* mGCTypeDef;	
 	BfTypeDef* mGenericIEnumerableTypeDef;