From ed233e1340b1a94eeb886254fd232dc5e6ecd228 Mon Sep 17 00:00:00 2001
From: Rahul Joshi <rjoshi@nvidia.com>
Date: Mon, 6 Oct 2025 10:09:22 -0700
Subject: [PATCH] [NFC][MLIR][TableGen] Drop namespace around op constraints
 functions

Op constraints are emitted as uniqued static standalone funtions
and need not be surrounded by the Op's C++ namespace.
---
 mlir/include/mlir/TableGen/CodeGenHelpers.h | 2 +-
 mlir/lib/Dialect/XeGPU/IR/XeGPUOps.cpp      | 7 ++-----
 mlir/lib/TableGen/CodeGenHelpers.cpp        | 4 +---
 mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp | 2 +-
 4 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/mlir/include/mlir/TableGen/CodeGenHelpers.h b/mlir/include/mlir/TableGen/CodeGenHelpers.h
index 252da21419b6e..997aef26bdc01 100644
--- a/mlir/include/mlir/TableGen/CodeGenHelpers.h
+++ b/mlir/include/mlir/TableGen/CodeGenHelpers.h
@@ -88,7 +88,7 @@ class StaticVerifierFunctionEmitter {
   ///
   /// Constraints that do not meet the restriction that they can only reference
   /// `$_self` and `$_op` are not uniqued.
-  void emitOpConstraints(ArrayRef<const llvm::Record *> opDefs);
+  void emitOpConstraints();
 
   /// Unique all compatible type and attribute constraints from a pattern file
   /// and emit them at the top of the generated file.
diff --git a/mlir/lib/Dialect/XeGPU/IR/XeGPUOps.cpp b/mlir/lib/Dialect/XeGPU/IR/XeGPUOps.cpp
index 81b5788d0b9b4..e0a8ac40648e0 100644
--- a/mlir/lib/Dialect/XeGPU/IR/XeGPUOps.cpp
+++ b/mlir/lib/Dialect/XeGPU/IR/XeGPUOps.cpp
@@ -20,8 +20,8 @@
 
 #define DEBUG_TYPE "xegpu"
 
-namespace mlir {
-namespace xegpu {
+using namespace mlir;
+using namespace mlir::xegpu;
 
 static bool isSharedMemory(const MemRefType &memrefTy) {
   Attribute attr = memrefTy.getMemorySpace();
@@ -1133,9 +1133,6 @@ LogicalResult MemDescSubviewOp::verify() {
   return success();
 }
 
-} // namespace xegpu
-} // namespace mlir
-
 namespace mlir {
 #include <mlir/Dialect/XeGPU/IR/XeGPUAttrInterface.cpp.inc>
 } // namespace mlir
diff --git a/mlir/lib/TableGen/CodeGenHelpers.cpp b/mlir/lib/TableGen/CodeGenHelpers.cpp
index cb90ef82c1c39..d52d5e769ee6d 100644
--- a/mlir/lib/TableGen/CodeGenHelpers.cpp
+++ b/mlir/lib/TableGen/CodeGenHelpers.cpp
@@ -49,9 +49,7 @@ StaticVerifierFunctionEmitter::StaticVerifierFunctionEmitter(
     raw_ostream &os, const RecordKeeper &records, StringRef tag)
     : os(os), uniqueOutputLabel(getUniqueOutputLabel(records, tag)) {}
 
-void StaticVerifierFunctionEmitter::emitOpConstraints(
-    ArrayRef<const Record *> opDefs) {
-  NamespaceEmitter namespaceEmitter(os, Operator(*opDefs[0]).getCppNamespace());
+void StaticVerifierFunctionEmitter::emitOpConstraints() {
   emitTypeConstraints();
   emitAttrConstraints();
   emitPropConstraints();
diff --git a/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp b/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp
index 2ddb07de48a76..f6cfe74729be0 100644
--- a/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp
+++ b/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp
@@ -4871,7 +4871,7 @@ static void emitOpClassDefs(const RecordKeeper &records,
                                                       constraintPrefix);
   os << formatv(opCommentHeader, "Local Utility Method", "Definitions");
   staticVerifierEmitter.collectOpConstraints(defs);
-  staticVerifierEmitter.emitOpConstraints(defs);
+  staticVerifierEmitter.emitOpConstraints();
 
   // Emit the classes.
   emitOpClasses(records, defs, os, staticVerifierEmitter,