[llvm] [mlir] [mlir] Add Normalize pass (PR #162266)

[Jacques Pienaar via llvm-commits]

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@@ -943,6 +943,17 @@ def ConvertShardToMPIPass : Pass<"convert-shard-to-mpi"> {
   ];
 }
 
+//===----------------------------------------------------------------------===//
+// Normalize
+//===----------------------------------------------------------------------===//
+def Normalize : Pass<"normalize", "ModuleOp"> {
+  let summary = "convert MLIR input to its normalized form";
+  let description = [{
+    This pass produces reordered MLIR input with determinstic variable
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jpienaar wrote:

Lets keep this similar to LLVM's equvalent pass (given inspiration and reuse)

/// This file implements the IRNormalizer class which aims to transform MLIR
/// inputs into a normal form by reordering and renaming instructions while
/// preserving the same semantics. The normalizer makes it easier to spot
/// semantic differences while diffing two modules which have undergone
/// different passes.

https://github.com/llvm/llvm-project/pull/162266