[clang] [CIR] Fix missing return value warning in maybePromoteBoolResult (PR #142673)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Morris Hafner (mmha)

<details>
<summary>Changes</summary>

This is NFC and simply adds an llvm_unreachable

---
Full diff: https://github.com/llvm/llvm-project/pull/142673.diff


1 Files Affected:

- (modified) clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp (+1) 


``````````diff
diff --git a/clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp b/clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp
index 77287ec45972d..0d9252a55d280 100644
--- a/clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp
@@ -104,6 +104,7 @@ class ScalarExprEmitter : public StmtVisitor<ScalarExprEmitter, mlir::Value> {
       return builder.createBoolToInt(value, dstTy);
     if (mlir::isa<cir::BoolType>(dstTy))
       return value;
+    llvm_unreachable("Can only promote integer or boolean types");
   }
 
   //===--------------------------------------------------------------------===//

``````````

</details>


https://github.com/llvm/llvm-project/pull/142673