[clang] [llvm] [WIP] ABI Lowering Library (PR #140112)

[Nikita Popov via llvm-commits]

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@@ -0,0 +1,172 @@
+//===----- ABIFunctionInfo.h - ABI Function Information ----- 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
+//
+//===----------------------------------------------------------------------===//
+//
+// Defines ABIFunctionInfo and associated types used in representing the
+// ABI-coerced types for function arguments and return values.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_ABI_ABIFUNCTIONINFO_H
+#define LLVM_ABI_ABIFUNCTIONINFO_H
+
+#include "ABIInfo.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/FoldingSet.h"
+#include "llvm/IR/CallingConv.h"
+#include "llvm/Support/TrailingObjects.h"
+
+namespace llvm {
+namespace abi {
+
+struct FunctionABIInfo {
+  llvm::CallingConv::ID CC = llvm::CallingConv::C;
+  llvm::CallingConv::ID EffectiveCC = llvm::CallingConv::C;
+
+  // Core ABI attributes
+  bool NoReturn = false;
+  bool NoUnwind = false;
+  bool HasSRet = false;
+  bool IsVariadic = false;
----------------
nikic wrote:

IsVariadic should be covered by RequiredArgs?

https://github.com/llvm/llvm-project/pull/140112