[clang] [CIR] Support zero-result ops in clangir TableGen lowering (PR #202273)

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github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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<summary>
You can test this locally with the following command:
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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp clang/utils/TableGen/CIRLoweringEmitter.cpp --diff_from_common_commit
``````````

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in a stack if you are using a stacked PR workflow. You can limit the results by
changing `origin/main` to the base branch/commit you want to compare against.
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<details>
<summary>
View the diff from clang-format here.
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``````````diff
diff --git a/clang/utils/TableGen/CIRLoweringEmitter.cpp b/clang/utils/TableGen/CIRLoweringEmitter.cpp
index dc2151e3f..4c4d0c370 100644
--- a/clang/utils/TableGen/CIRLoweringEmitter.cpp
+++ b/clang/utils/TableGen/CIRLoweringEmitter.cpp
@@ -192,8 +192,8 @@ void GenerateLLVMLoweringPattern(llvm::StringRef OpName,
       Code << "    rewriter.replaceOpWithNewOp<mlir::LLVM::" << LLVMOp
            << ">(op, mlir::TypeRange{}, adaptor.getOperands());\n";
     } else {
-      Code
-          << "    mlir::Type resTy = typeConverter->convertType(op.getType());\n";
+      Code << "    mlir::Type resTy = "
+              "typeConverter->convertType(op.getType());\n";
       Code << "    rewriter.replaceOpWithNewOp<mlir::LLVM::" << LLVMOp
            << ">(op, resTy, adaptor.getOperands());\n";
     }

``````````

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https://github.com/llvm/llvm-project/pull/202273