[mlir] Include llvm/Support/Debug.h in Transforms/Passes.h

[springerm]

Summary

There are many downstream users of llvm::dbgs, which is defined in Debug.h. Before D106342, many users included that dependency transitively via the now deleted ViewRegionGraph.h. Adding it back to Transforms/Passes.h for convenience.

[akuegel]

Thanks :)

[rriddle]

Can you instead move the include to those users? I don't think Transforms.h should need to include Debug.h.

[springerm]

In D107451#2925684, @rriddle wrote:

Can you instead move the include to those users? I don't think Transforms.h should need to include Debug.h.

Yes, this was just the fastest way to fix the build yesterday. Preparing a commit that includes the file in each user...

mlir/include/mlir/Transforms/Passes.h

 //===----------------------------------------------------------------------===//
 
 #ifndef MLIR_TRANSFORMS_PASSES_H
 #define MLIR_TRANSFORMS_PASSES_H
 
 #include "mlir/Pass/Pass.h"
 #include "mlir/Transforms/LocationSnapshot.h"
 #include "mlir/Transforms/ViewOpGraph.h"
+#include "llvm/Support/Debug.h"
 #include <limits>
 
 namespace mlir {
 
 class AffineForOp;
 class GreedyRewriteConfig;
 
 //===----------------------------------------------------------------------===//

mlir/lib/Transforms/NormalizeMemRefs.cpp

 //===----------------------------------------------------------------------===//
 
 #include "PassDetail.h"
 #include "mlir/Dialect/Affine/IR/AffineOps.h"
 #include "mlir/Dialect/MemRef/IR/MemRef.h"
 #include "mlir/Transforms/Passes.h"
 #include "mlir/Transforms/Utils.h"
 #include "llvm/ADT/SmallSet.h"
-#include "llvm/Support/Debug.h"
 
 #define DEBUG_TYPE "normalize-memrefs"
 
 using namespace mlir;
 
 namespace {
 
 /// All memrefs passed across functions with non-trivial layout maps are