llvmbot wrote:

<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Andy Kaylor (andykaylor)

<details>
<summary>Changes</summary>

This fixes a warning about having a default case in a fully covered enum switch 
statement.

---
Full diff: https://github.com/llvm/llvm-project/pull/154609.diff


1 Files Affected:

- (modified) clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp (+1-2) 


``````````diff
diff --git a/clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp 
b/clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp
index ed5d9b83fc60e..9972d7612105d 100644
--- a/clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp
+++ b/clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp
@@ -1181,9 +1181,8 @@ getLLVMMemOrder(std::optional<cir::MemOrder> memorder) {
     return mlir::LLVM::AtomicOrdering::acq_rel;
   case cir::MemOrder::SequentiallyConsistent:
     return mlir::LLVM::AtomicOrdering::seq_cst;
-  default:
-    llvm_unreachable("unknown memory order");
   }
+  llvm_unreachable("unknown memory order");
 }
 
 mlir::LogicalResult CIRToLLVMLoadOpLowering::matchAndRewrite(

``````````

</details>


https://github.com/llvm/llvm-project/pull/154609
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