Fix MSVC "not all control paths return a value" warning. NFC.

RKSimon · RKSimon · commit 1b8593545316 · 2024-08-06T09:38:09.000+01:00
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -13157,6 +13157,7 @@ std::optional<bool> SelectionDAG::isBoolConstant(SDValue N,
   case TargetLowering::UndefinedBooleanContent:
     return CVal[0];
   }
+  llvm_unreachable("Unknown BooleanContent enum");
 }
 
 void SelectionDAG::createOperands(SDNode *Node, ArrayRef<SDValue> Vals) {

Original file line number	Diff line number	Diff line change
`@@ -13157,6 +13157,7 @@ std::optional<bool> SelectionDAG::isBoolConstant(SDValue N,`
`13157`	`13157`	`case TargetLowering::UndefinedBooleanContent:`
`13158`	`13158`	`return CVal[0];`
`13159`	`13159`	`}`
	`13160`	`+ llvm_unreachable("Unknown BooleanContent enum");`
`13160`	`13161`	`}`
`13161`	`13162`
`13162`	`13163`	`void SelectionDAG::createOperands(SDNode *Node, ArrayRef<SDValue> Vals) {`