[llvm] [DirectX] Data Scalarization of Vectors in Global Scope (PR #110029)

[Justin Bogner via llvm-commits]

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@@ -0,0 +1,284 @@
+//===- DXILDataScalarization.cpp - Perform DXIL Data Legalization----===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------===//
+
+#include "DXILDataScalarization.h"
+#include "DirectX.h"
+#include "llvm/ADT/PostOrderIterator.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/IR/GlobalVariable.h"
+#include "llvm/IR/IRBuilder.h"
+#include "llvm/IR/InstVisitor.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/Operator.h"
+#include "llvm/IR/PassManager.h"
+#include "llvm/IR/ReplaceConstant.h"
+#include "llvm/IR/Type.h"
+#include "llvm/Transforms/Utils/Cloning.h"
+#include "llvm/Transforms/Utils/Local.h"
+
+#define DEBUG_TYPE "dxil-data-scalarization"
+#define Max_VEC_SIZE 4
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bogner wrote:

If we're using a global for a value like this I have a slight preference for `static const int MaxVecSize = 4;`, though personally since this is just for sizing SmallVectors I'm not even sure this is worth defining separately like this.

https://github.com/llvm/llvm-project/pull/110029