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[Orc][MCJIT][RuntimeDyld] Add header that was accidentally left out of r231724.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231726 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lang Hames 2015-03-09 23:51:09 +00:00
parent 6d6178426f
commit 8829ba195c
1 changed files with 81 additions and 0 deletions
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81
include/llvm/ExecutionEngine/JITSymbolFlags.h Normal file
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//===------ JITSymbolFlags.h - Flags for symbols in the JIT -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Symbol flags for symbols in the JIT (e.g. weak, exported).
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_EXECUTIONENGINE_JITSYMBOLFLAGS_H
#define LLVM_EXECUTIONENGINE_JITSYMBOLFLAGS_H
#include "llvm/IR/GlobalValue.h"
namespace llvm {
/// @brief Flags for symbols in the JIT.
enum class JITSymbolFlags : char {
None = 0,
Weak = 1U << 0,
Exported = 1U << 1
};
JITSymbolFlags operator|(JITSymbolFlags LHS, JITSymbolFlags RHS) {
typedef std::underlying_type<JITSymbolFlags>::type UT;
return static_cast<JITSymbolFlags>(
static_cast<UT>(LHS) | static_cast<UT>(RHS));
}
JITSymbolFlags& operator |=(JITSymbolFlags &LHS, JITSymbolFlags RHS) {
LHS = LHS | RHS;
return LHS;
}
JITSymbolFlags operator&(JITSymbolFlags LHS, JITSymbolFlags RHS) {
typedef std::underlying_type<JITSymbolFlags>::type UT;
return static_cast<JITSymbolFlags>(
static_cast<UT>(LHS) & static_cast<UT>(RHS));
}
JITSymbolFlags& operator &=(JITSymbolFlags &LHS, JITSymbolFlags RHS) {
LHS = LHS & RHS;
return LHS;
}
/// @brief Base class for symbols in the JIT.
class JITSymbolBase {
public:
JITSymbolBase(JITSymbolFlags Flags) : Flags(Flags) {}
JITSymbolFlags getFlags() const { return Flags; }
bool isWeak() const {
return (Flags & JITSymbolFlags::Weak) == JITSymbolFlags::Weak;
}
bool isExported() const {
return (Flags & JITSymbolFlags::Exported) == JITSymbolFlags::Exported;
}
static JITSymbolFlags flagsFromGlobalValue(const GlobalValue &GV) {
JITSymbolFlags Flags = JITSymbolFlags::None;
if (GV.hasWeakLinkage())
Flags |= JITSymbolFlags::Weak;
if (!GV.hasLocalLinkage() && !GV.hasHiddenVisibility())
Flags |= JITSymbolFlags::Exported;
return Flags;
}
private:
JITSymbolFlags Flags;
};
} // end namespace llvm
#endif