fix(compiler): Custom copy op from 1D tensor to avoir stack allocation from mlir memref to llvm lowering

compiler/lib/Conversion/BConcreteToBConcreteCAPI/BConcreteToBConcreteCAPI.cpp

@@ -12,6 +12,7 @@
 #include "mlir/Transforms/DialectConversion.h"
 
 #include "concretelang/Conversion/Passes.h"
+#include "concretelang/Conversion/Tools.h"
 #include "concretelang/Dialect/BConcrete/IR/BConcreteDialect.h"
 #include "concretelang/Dialect/BConcrete/IR/BConcreteOps.h"
 #include "concretelang/Dialect/Concrete/IR/ConcreteDialect.h"
@@ -34,35 +35,6 @@ public:
   }
 };
 
-mlir::LogicalResult insertForwardDeclaration(mlir::Operation *op,
-                                             mlir::RewriterBase &rewriter,
-                                             llvm::StringRef funcName,
-                                             mlir::FunctionType funcType) {
-  // Looking for the `funcName` Operation
-  auto module = mlir::SymbolTable::getNearestSymbolTable(op);
-  auto opFunc = mlir::dyn_cast_or_null<mlir::SymbolOpInterface>(
-      mlir::SymbolTable::lookupSymbolIn(module, funcName));
-  if (!opFunc) {
-    // Insert the forward declaration of the funcName
-    mlir::OpBuilder::InsertionGuard guard(rewriter);
-    rewriter.setInsertionPointToStart(&module->getRegion(0).front());
-
-    opFunc = rewriter.create<mlir::FuncOp>(rewriter.getUnknownLoc(), funcName,
-                                           funcType);
-    opFunc.setPrivate();
-  } else {
-    // Check if the `funcName` is well a private function
-    if (!opFunc.isPrivate()) {
-      op->emitError() << "the function \"" << funcName
-                      << "\" conflicts with the concrete C API, please rename";
-      return mlir::failure();
-    }
-  }
-  assert(mlir::SymbolTable::lookupSymbolIn(module, funcName)
-             ->template hasTrait<mlir::OpTrait::FunctionLike>());
-  return mlir::success();
-}
-
 // Set of functions to generate generic types.
 // Generic types are used to add forward declarations without a specific type.
 // For example, we may need to add LWE ciphertext of different dimensions, or