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https://github.com/c64scene-ar/llvm-6502.git
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94c37b0b6a
Dave Blaikie. Thanks Dave! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231896 91177308-0d34-0410-b5e6-96231b3b80d8
82 lines
2.2 KiB
C++
82 lines
2.2 KiB
C++
//===------ JITSymbolFlags.h - Flags for symbols in the JIT -----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Symbol flags for symbols in the JIT (e.g. weak, exported).
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_EXECUTIONENGINE_JITSYMBOLFLAGS_H
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#define LLVM_EXECUTIONENGINE_JITSYMBOLFLAGS_H
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#include "llvm/IR/GlobalValue.h"
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namespace llvm {
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/// @brief Flags for symbols in the JIT.
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enum class JITSymbolFlags : char {
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None = 0,
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Weak = 1U << 0,
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Exported = 1U << 1
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};
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inline JITSymbolFlags operator|(JITSymbolFlags LHS, JITSymbolFlags RHS) {
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typedef std::underlying_type<JITSymbolFlags>::type UT;
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return static_cast<JITSymbolFlags>(
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static_cast<UT>(LHS) | static_cast<UT>(RHS));
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}
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inline JITSymbolFlags& operator |=(JITSymbolFlags &LHS, JITSymbolFlags RHS) {
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LHS = LHS | RHS;
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return LHS;
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}
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inline JITSymbolFlags operator&(JITSymbolFlags LHS, JITSymbolFlags RHS) {
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typedef std::underlying_type<JITSymbolFlags>::type UT;
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return static_cast<JITSymbolFlags>(
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static_cast<UT>(LHS) & static_cast<UT>(RHS));
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}
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inline JITSymbolFlags& operator &=(JITSymbolFlags &LHS, JITSymbolFlags RHS) {
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LHS = LHS & RHS;
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return LHS;
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}
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/// @brief Base class for symbols in the JIT.
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class JITSymbolBase {
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public:
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JITSymbolBase(JITSymbolFlags Flags) : Flags(Flags) {}
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JITSymbolFlags getFlags() const { return Flags; }
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bool isWeak() const {
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return (Flags & JITSymbolFlags::Weak) == JITSymbolFlags::Weak;
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}
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bool isExported() const {
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return (Flags & JITSymbolFlags::Exported) == JITSymbolFlags::Exported;
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}
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static JITSymbolFlags flagsFromGlobalValue(const GlobalValue &GV) {
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JITSymbolFlags Flags = JITSymbolFlags::None;
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if (GV.hasWeakLinkage())
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Flags |= JITSymbolFlags::Weak;
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if (!GV.hasLocalLinkage() && !GV.hasHiddenVisibility())
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Flags |= JITSymbolFlags::Exported;
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return Flags;
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}
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private:
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JITSymbolFlags Flags;
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};
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} // end namespace llvm
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#endif
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