70 lines
2.5 KiB
C++
70 lines
2.5 KiB
C++
//===--- ExprConstShared.h - Shared consetxpr functionality ----*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Shared functionality between the new constant expression
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// interpreter (AST/Interp/) and the current one (ExprConstant.cpp).
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_LIB_AST_EXPRCONSTSHARED_H
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#define LLVM_CLANG_LIB_AST_EXPRCONSTSHARED_H
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namespace llvm {
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class APFloat;
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}
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namespace clang {
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class QualType;
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class LangOptions;
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} // namespace clang
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using namespace clang;
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/// Values returned by __builtin_classify_type, chosen to match the values
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/// produced by GCC's builtin.
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enum class GCCTypeClass {
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None = -1,
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Void = 0,
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Integer = 1,
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// GCC reserves 2 for character types, but instead classifies them as
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// integers.
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Enum = 3,
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Bool = 4,
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Pointer = 5,
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// GCC reserves 6 for references, but appears to never use it (because
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// expressions never have reference type, presumably).
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PointerToDataMember = 7,
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RealFloat = 8,
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Complex = 9,
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// GCC reserves 10 for functions, but does not use it since GCC version 6 due
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// to decay to pointer. (Prior to version 6 it was only used in C++ mode).
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// GCC claims to reserve 11 for pointers to member functions, but *actually*
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// uses 12 for that purpose, same as for a class or struct. Maybe it
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// internally implements a pointer to member as a struct? Who knows.
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PointerToMemberFunction = 12, // Not a bug, see above.
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ClassOrStruct = 12,
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Union = 13,
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// GCC reserves 14 for arrays, but does not use it since GCC version 6 due to
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// decay to pointer. (Prior to version 6 it was only used in C++ mode).
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// GCC reserves 15 for strings, but actually uses 5 (pointer) for string
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// literals.
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// Lang = 16,
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// OpaqueType = 17,
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BitInt = 18,
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Vector = 19
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};
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GCCTypeClass EvaluateBuiltinClassifyType(QualType T,
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const LangOptions &LangOpts);
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void HandleComplexComplexMul(llvm::APFloat A, llvm::APFloat B, llvm::APFloat C,
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llvm::APFloat D, llvm::APFloat &ResR,
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llvm::APFloat &ResI);
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void HandleComplexComplexDiv(llvm::APFloat A, llvm::APFloat B, llvm::APFloat C,
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llvm::APFloat D, llvm::APFloat &ResR,
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llvm::APFloat &ResI);
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#endif
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