[clang-tools-extra] [clang-tidy] Add MLIR check for old op builder usage. (PR #149148)

[Jacques Pienaar via cfe-commits]

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@@ -0,0 +1,75 @@
+// RUN: %check_clang_tidy --match-partial-fixes %s llvm-use-new-mlir-op-builder %t
+
+namespace mlir {
+class Location {};
+class OpBuilder {
+public:
+  template <typename OpTy, typename... Args>
+  OpTy create(Location location, Args &&...args) {
+    return OpTy(args...);
+  }
+  Location getUnknownLoc() { return Location(); }
+};
+class ImplicitLocOpBuilder : public OpBuilder {
+public:
+  template <typename OpTy, typename... Args>
+  OpTy create(Args &&...args) {
+    return OpTy(args...);
+  }
+};
+struct ModuleOp {
+  ModuleOp() {}
+  static ModuleOp create(OpBuilder &builder, Location location) {
+    return ModuleOp();
+  }
+};
+struct NamedOp {
+  NamedOp(const char* name) {}
+  static NamedOp create(OpBuilder &builder, Location location, const char* name) {
+    return NamedOp(name);
+  }
+};
+} // namespace mlir
+
+#define ASSIGN(A, B, C, D) A = B.create<C>(B.getUnknownLoc(), D)
+
+template <typename T>
+void g(mlir::OpBuilder &b) {
+  // CHECK-MESSAGES: :[[@LINE+2]]:3: warning: use OpType::create(builder, ...) instead of builder.create<OpType>(...) [llvm-use-new-mlir-op-builder]
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jpienaar wrote:

Fixed, thanks

https://github.com/llvm/llvm-project/pull/149148