[Mlir-commits] [mlir] [mlir][CAPI] Add MlirOpFoldResult type to C API (PR #187247)

[llvmlistbot at llvm.org]

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@@ -40,4 +41,15 @@ DEFINE_C_API_METHODS(MlirModule, mlir::ModuleOp)
 DEFINE_C_API_METHODS(MlirType, mlir::Type)
 DEFINE_C_API_METHODS(MlirValue, mlir::Value)
 
+static inline MlirOpFoldResult wrap(mlir::OpFoldResult ofr) {
+  return MlirOpFoldResult{ofr.getOpaqueValue()};
+}
+static inline mlir::OpFoldResult unwrap(MlirOpFoldResult result) {
+  using PU = llvm::PointerUnion<mlir::Attribute, mlir::Value>;
+  PU pu = PU::getFromOpaqueValue(const_cast<void *>(result.ptr));
+  if (llvm::isa<mlir::Attribute>(pu))
+    return llvm::cast<mlir::Attribute>(pu);
+  return llvm::cast<mlir::Value>(pu);
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PragmaTwice wrote:

Hmm I think you don't need to touch `mlir/include/mlir/IR/OpDefinition.h`. You can just do a `static_cast`.

https://github.com/llvm/llvm-project/pull/187247