[llvm] MCExpr-ify AMDGPU PALMetadata (PR #93236)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,39 @@
+//===- AMDGPUDelayedMCExpr.h - Delayed MCExpr resolve -----------*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_AMDGPU_UTILS_AMDGPUDELAYEDMCEXPR_H
+#define LLVM_LIB_TARGET_AMDGPU_UTILS_AMDGPUDELAYEDMCEXPR_H
+
+#include "llvm/BinaryFormat/MsgPackDocument.h"
+#include <deque>
+
+namespace llvm {
+class MCExpr;
+
+class DelayedMCExpr {
+  struct DelayedExpr {
+    msgpack::DocNode &DN;
+    msgpack::Type Type;
+    const MCExpr *Expr;
+    DelayedExpr(msgpack::DocNode &DN, msgpack::Type Type, const MCExpr *Expr)
+        : DN(DN), Type(Type), Expr(Expr) {}
+  };
+
+  std::deque<DelayedExpr> DelayedExprs;
+
+public:
+  bool ResolveDelayedExpressions();
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arsenm wrote:

Start methods with lowercase 

https://github.com/llvm/llvm-project/pull/93236