[Mlir-commits] [mlir] [mlir] Method to iterate over registered operations for a given dialect class. (PR #112344)

[Rajveer Singh Bharadwaj]

https://github.com/Rajveer100 updated https://github.com/llvm/llvm-project/pull/112344

>From db49a12b2f8cff7e37f14e5b2da763cbd8cacd18 Mon Sep 17 00:00:00 2001
From: Rajveer <rajveer.developer at icloud.com>
Date: Tue, 15 Oct 2024 16:26:08 +0530
Subject: [PATCH] [mlir] Method to iterate over registered operations for a
 given dialect class.

Part of #111591

Currently we have `MLIRContext::getRegisteredOperations` which returns all operations
for the given context, with the addition of `MLIRContext::getRegisteredOperationsByDialect`
we can now retrieve the same for a given dialect class.
---
 mlir/include/mlir/IR/MLIRContext.h |  5 +++++
 mlir/lib/IR/MLIRContext.cpp        | 24 ++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/mlir/include/mlir/IR/MLIRContext.h b/mlir/include/mlir/IR/MLIRContext.h
index d17bbac81655b5..ef8dab87f131a1 100644
--- a/mlir/include/mlir/IR/MLIRContext.h
+++ b/mlir/include/mlir/IR/MLIRContext.h
@@ -197,6 +197,11 @@ class MLIRContext {
   /// operations.
   ArrayRef<RegisteredOperationName> getRegisteredOperations();
 
+  /// Return a sorted array containing the information for registered operations
+  /// filtered by dialect name.
+  ArrayRef<RegisteredOperationName>
+  getRegisteredOperationsByDialect(StringRef dialectName);
+
   /// Return true if this operation name is registered in this context.
   bool isOperationRegistered(StringRef name);
 
diff --git a/mlir/lib/IR/MLIRContext.cpp b/mlir/lib/IR/MLIRContext.cpp
index f05666fcde207b..d33340f4aefc85 100644
--- a/mlir/lib/IR/MLIRContext.cpp
+++ b/mlir/lib/IR/MLIRContext.cpp
@@ -711,6 +711,30 @@ ArrayRef<RegisteredOperationName> MLIRContext::getRegisteredOperations() {
   return impl->sortedRegisteredOperations;
 }
 
+/// Return information for registered operations by dialect.
+ArrayRef<RegisteredOperationName>
+MLIRContext::getRegisteredOperationsByDialect(StringRef dialectName) {
+  auto lowerBound =
+      std::lower_bound(impl->sortedRegisteredOperations.begin(),
+                       impl->sortedRegisteredOperations.end(), dialectName,
+                       [](auto &lhs, auto &rhs) {
+                         return lhs.getDialect().getNamespace().compare(rhs);
+                       });
+
+  if (lowerBound == impl->sortedRegisteredOperations.end() ||
+      lowerBound->getDialect().getNamespace() != dialectName)
+    return ArrayRef<RegisteredOperationName>();
+
+  auto upperBound =
+      std::upper_bound(lowerBound, impl->sortedRegisteredOperations.end(),
+                       dialectName, [](auto &lhs, auto &rhs) {
+                         return lhs.compare(rhs.getDialect().getNamespace());
+                       });
+
+  size_t count = std::distance(lowerBound, upperBound);
+  return ArrayRef(&*lowerBound, count);
+}
+
 bool MLIRContext::isOperationRegistered(StringRef name) {
   return RegisteredOperationName::lookup(name, this).has_value();
 }