Add description

Author: erman-gurses

mlir/include/mlir/Dialect/AMDGPU/Transforms/Passes.td

@@ -32,6 +32,12 @@ def AmdgpuEmulateAtomicsPass : Pass<"amdgpu-emulate-atomics"> {
 
 def OptimizeSharedMemory : Pass<"amdgpu-optimize-shared-memory"> {
   let summary = "Optimizes accesses to shared memory memrefs in order to reduce bank conflicts.";
+  let description = [{
+    This pass adds a transformation and pass to the AMDGPU dialect that
+    attempts to optimize reads/writes from a memref representing GPU shared
+    memory in order to avoid bank conflicts.
+  }];
+
   let dependentDialects = [
     "memref::MemRefDialect", "vector::VectorDialect"
   ];