Index: mlir/include/mlir/Interfaces/SideEffectInterfaces.td
===================================================================
--- mlir/include/mlir/Interfaces/SideEffectInterfaces.td
+++ mlir/include/mlir/Interfaces/SideEffectInterfaces.td
@@ -49,28 +49,28 @@
 // resource. An 'allocate' effect implies only allocation of the resource, and
 // not any visible mutation or dereference.
 class MemAlloc<Resource resource>
-  : MemoryEffect<"MemoryEffects::Allocate", resource>;
+  : MemoryEffect<"::mlir::MemoryEffects::Allocate", resource>;
 def MemAlloc : MemAlloc<DefaultResource>;
 
 // The following effect indicates that the operation frees some resource that
 // has been allocated. A 'free' effect implies only de-allocation of the
 // resource, and not any visible allocation, mutation or dereference.
 class MemFree<Resource resource>
-  : MemoryEffect<"MemoryEffects::Free", resource>;
+  : MemoryEffect<"::mlir::MemoryEffects::Free", resource>;
 def MemFree : MemFree<DefaultResource>;
 
 // The following effect indicates that the operation reads from some
 // resource. A 'read' effect implies only dereferencing of the resource, and
 // not any visible mutation.
 class MemRead<Resource resource>
-  : MemoryEffect<"MemoryEffects::Read", resource>;
+  : MemoryEffect<"::mlir::MemoryEffects::Read", resource>;
 def MemRead : MemRead<DefaultResource>;
 
 // The following effect indicates that the operation writes to some
 // resource. A 'write' effect implies only mutating a resource, and not any
 // visible dereference or read.
 class MemWrite<Resource resource>
-  : MemoryEffect<"MemoryEffects::Write", resource>;
+  : MemoryEffect<"::mlir::MemoryEffects::Write", resource>;
 def MemWrite : MemWrite<DefaultResource>;
 
 //===----------------------------------------------------------------------===//
Index: mlir/test/mlir-tblgen/op-side-effects.td
===================================================================
--- mlir/test/mlir-tblgen/op-side-effects.td
+++ mlir/test/mlir-tblgen/op-side-effects.td
@@ -25,13 +25,13 @@
 
 // CHECK: void SideEffectOpA::getEffects
 // CHECK:   for (::mlir::Value value : getODSOperands(0))
-// CHECK:     effects.emplace_back(MemoryEffects::Read::get(), value, ::mlir::SideEffects::DefaultResource::get());
-// CHECK:   effects.emplace_back(MemoryEffects::Read::get(), symbol(), ::mlir::SideEffects::DefaultResource::get());
-// CHECK:   effects.emplace_back(MemoryEffects::Write::get(), flat_symbol(), ::mlir::SideEffects::DefaultResource::get());
+// CHECK:     effects.emplace_back(::mlir::MemoryEffects::Read::get(), value, ::mlir::SideEffects::DefaultResource::get());
+// CHECK:   effects.emplace_back(::mlir::MemoryEffects::Read::get(), symbol(), ::mlir::SideEffects::DefaultResource::get());
+// CHECK:   effects.emplace_back(::mlir::MemoryEffects::Write::get(), flat_symbol(), ::mlir::SideEffects::DefaultResource::get());
 // CHECK:   if (auto symbolRef = optional_symbolAttr())
-// CHECK:     effects.emplace_back(MemoryEffects::Read::get(), symbolRef, ::mlir::SideEffects::DefaultResource::get());
+// CHECK:     effects.emplace_back(::mlir::MemoryEffects::Read::get(), symbolRef, ::mlir::SideEffects::DefaultResource::get());
 // CHECK:   for (::mlir::Value value : getODSResults(0))
-// CHECK:     effects.emplace_back(MemoryEffects::Allocate::get(), value, CustomResource::get());
+// CHECK:     effects.emplace_back(::mlir::MemoryEffects::Allocate::get(), value, CustomResource::get());
 
 // CHECK: void SideEffectOpB::getEffects
-// CHECK:   effects.emplace_back(MemoryEffects::Write::get(), CustomResource::get());
+// CHECK:   effects.emplace_back(::mlir::MemoryEffects::Write::get(), CustomResource::get());