[mlir][doc] Emit \n if description not end with \n.

[CoTinker]

This PR addresses a markdown formatting issue by ensuring a \n is emitted if the description string does not already end with one. Fixes #112672.

[llvmbot]

@llvm/pr-subscribers-mlir

@llvm/pr-subscribers-mlir-core

Author: Longsheng Mou (CoTinker)

Changes

This PR addresses a markdown formatting issue by ensuring a \n is emitted if the description string does not already end with one. Fixes #112672.

---

Full diff: https://github.com/llvm/llvm-project/pull/112898.diff

1 Files Affected:

• (modified) mlir/tools/mlir-tblgen/OpDocGen.cpp (+4-1)

diff --git a/mlir/tools/mlir-tblgen/OpDocGen.cpp b/mlir/tools/mlir-tblgen/OpDocGen.cpp
index ff3c6b16bb6ebc..d499c78a5cf44d 100644
--- a/mlir/tools/mlir-tblgen/OpDocGen.cpp
+++ b/mlir/tools/mlir-tblgen/OpDocGen.cpp
@@ -70,7 +70,10 @@ void mlir::tblgen::emitSummary(StringRef summary, raw_ostream &os) {
 // nested in the op definition.
 void mlir::tblgen::emitDescription(StringRef description, raw_ostream &os) {
   raw_indented_ostream ros(os);
-  ros.printReindented(description.rtrim(" \t"));
+  StringRef trimmed = description.rtrim(" \t");
+  ros.printReindented(trimmed);
+  if (!trimmed.ends_with("\n"))
+    ros << "\n";
 }
 
 void mlir::tblgen::emitDescriptionComment(StringRef description,

[CoTinker]

Thanks for your review.