1 files changed, 23 insertions, 0 deletions
diff --git a/clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp b/clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp
index ba967a4..b4afed7 100644
--- a/clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp
+++ b/clang/lib/CIR/Lowering/DirectToLLVM/LowerToLLVM.cpp
@@ -2832,6 +2832,29 @@ static void collectUnreachable(mlir::Operation *parent,
   }
 }
 
+mlir::LogicalResult CIRToLLVMObjSizeOpLowering::matchAndRewrite(
+    cir::ObjSizeOp op, OpAdaptor adaptor,
+    mlir::ConversionPatternRewriter &rewriter) const {
+  mlir::Type llvmResTy = getTypeConverter()->convertType(op.getType());
+  mlir::Location loc = op->getLoc();
+
+  mlir::IntegerType i1Ty = rewriter.getI1Type();
+
+  auto i1Val = [&rewriter, &loc, &i1Ty](bool val) {
+    return mlir::LLVM::ConstantOp::create(rewriter, loc, i1Ty, val);
+  };
+
+  replaceOpWithCallLLVMIntrinsicOp(rewriter, op, "llvm.objectsize", llvmResTy,
+                                   {
+                                       adaptor.getPtr(),
+                                       i1Val(op.getMin()),
+                                       i1Val(op.getNullunknown()),
+                                       i1Val(op.getDynamic()),
+                                   });
+
+  return mlir::LogicalResult::success();
+}
+
 void ConvertCIRToLLVMPass::processCIRAttrs(mlir::ModuleOp module) {
   // Lower the module attributes to LLVM equivalents.
   if (mlir::Attribute tripleAttr =