[mlir][doc] Escape effects, interfaces, and traits (#76297)

Fixes https://github.com/llvm/llvm-project/issues/76270.

Thanks to @scottamain for the clear description.


Co-authored-by: Scott Main <scott@modular.com>

2 files changed, 12 insertions, 6 deletions

diff --git a/mlir/test/mlir-tblgen/gen-dialect-doc.td b/mlir/test/mlir-tblgen/gen-dialect-doc.td
index ca0b6e38edf8..c9492eb9ac3c 100644
--- a/mlir/test/mlir-tblgen/gen-dialect-doc.td
+++ b/mlir/test/mlir-tblgen/gen-dialect-doc.td
@@ -81,9 +81,9 @@ def TestTypeDefParams : TypeDef<Test_Dialect, "TestTypeDefParams"> {
 // CHECK: Other group
 // CHECK: test.b
 // CHECK: test.c
-// CHECK: Traits: SingleBlock, SingleBlockImplicitTerminator<YieldOp>
-// CHECK: Interfaces: NoMemoryEffect (MemoryEffectOpInterface)
-// CHECK: Effects: MemoryEffects::Effect{}
+// CHECK: Traits: `SingleBlockImplicitTerminator<YieldOp>`, `SingleBlock`
+// CHECK: Interfaces: `NoMemoryEffect (MemoryEffectOpInterface)`
+// CHECK: Effects: `MemoryEffects::Effect{}`
 
 // CHECK: ## Attribute constraints
 // CHECK: ### attribute summary
diff --git a/mlir/tools/mlir-tblgen/OpDocGen.cpp b/mlir/tools/mlir-tblgen/OpDocGen.cpp
index 877ef1089dce..7cd2690ea815 100644
--- a/mlir/tools/mlir-tblgen/OpDocGen.cpp
+++ b/mlir/tools/mlir-tblgen/OpDocGen.cpp
@@ -123,6 +123,12 @@ static void emitAssemblyFormat(StringRef opName, StringRef format,
   os << "```\n\n";
 }
 
+/// Place `text` between backticks so that the Markdown processor renders it as
+/// inline code.
+static std::string backticks(const std::string &text) {
+  return '`' + text + '`';
+}
+
 static void emitOpTraitsDoc(const Operator &op, raw_ostream &os) {
   // TODO: We should link to the trait/documentation of it. That also means we
   // should add descriptions to traits that can be queried.
@@ -155,14 +161,14 @@ static void emitOpTraitsDoc(const Operator &op, raw_ostream &os) {
           os << effect << " on " << rec->getValueAsString("resource");
         });
         os << "}";
-        effects.insert(os.str());
+        effects.insert(backticks(os.str()));
         name.append(llvm::formatv(" ({0})", traitName).str());
       }
-      interfaces.insert(name);
+      interfaces.insert(backticks(name));
       continue;
     }
 
-    traits.insert(name);
+    traits.insert(backticks(name));
   }
   if (!traits.empty()) {
     llvm::interleaveComma(traits, os << "\nTraits: ");