[mlir] Simplify code with StringMap::operator[] (NFC)

[kazutakahirata]

No description provided.

[llvmbot]

@llvm/pr-subscribers-mlir-core

@llvm/pr-subscribers-mlir

Author: Kazu Hirata (kazutakahirata)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/115427.diff

1 Files Affected:

• (modified) mlir/lib/IR/MLIRContext.cpp (+1-2)

diff --git a/mlir/lib/IR/MLIRContext.cpp b/mlir/lib/IR/MLIRContext.cpp
index d33340f4aefc85..b9e745fdf4a13e 100644
--- a/mlir/lib/IR/MLIRContext.cpp
+++ b/mlir/lib/IR/MLIRContext.cpp
@@ -986,8 +986,7 @@ void RegisteredOperationName::insert(
   }
   StringRef name = impl->getName().strref();
   // Insert the operation info if it doesn't exist yet.
-  auto it = ctxImpl.operations.insert({name, nullptr});
-  it.first->second = std::move(ownedImpl);
+  ctxImpl.operations[name] = std::move(ownedImpl);
 
   // Update the registered info for this operation.
   auto emplaced = ctxImpl.registeredOperations.try_emplace(

[nikic]

LGTM