[llvm-branch-commits] [mlir] [Backport][MLIR] Properties.td fix from main commit 77f2560 (PR #165768)

[Lin-Ya Yu via llvm-branch-commits]

https://github.com/yu810226 created https://github.com/llvm/llvm-project/pull/165768

This PR backports the change from commit 77f256070f985029a53da5e76ecd85ca7686a7ea
on `main` to `release/21.x`. Only mlir/include/mlir/IR/Properties.td is affected.

Original commit: https://github.com/llvm/llvm-project/commit/77f256070f985029a53da5e76ecd85ca7686a7ea

(cherry picked manually)

>From a0f6aee8d318558e74471dc5e75a41d1bfca9b62 Mon Sep 17 00:00:00 2001
From: yu810226 <yu810226 at gmail.com>
Date: Thu, 30 Oct 2025 11:49:01 -0700
Subject: [PATCH] [Backport][MLIR] Properties.td fix from main commit 77f2560

---
 mlir/include/mlir/IR/Properties.td | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/mlir/include/mlir/IR/Properties.td b/mlir/include/mlir/IR/Properties.td
index a6221f9aaaef9..a7ade0675b9bb 100644
--- a/mlir/include/mlir/IR/Properties.td
+++ b/mlir/include/mlir/IR/Properties.td
@@ -773,9 +773,10 @@ class OptionalProp<Property p, bit canDelegateParsing = 1>
   }];
   let writeToMlirBytecode = [{
     $_writer.writeOwnedBool($_storage.has_value());
-    if (!$_storage.has_value())
-      return;
-  }] # !subst("$_storage", "(*($_storage))", p.writeToMlirBytecode);
+    if ($_storage.has_value()) {
+      }] # !subst("$_storage", "(*($_storage))", p.writeToMlirBytecode) # [{
+    }
+  }];
 
   let hashProperty = !if(!empty(p.hashProperty), p.hashProperty,
     [{ hash_value($_storage.has_value() ? std::optional<::llvm::hash_code>{}] #