https://github.com/JuliaLang/julia
Tip revision: 37c59677e5859cb0f11261dc81693abb2af1536e authored by Valentin Churavy on 10 May 2018, 00:19:57 UTC
pass LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING=0
pass LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING=0
Tip revision: 37c5967
jitlayers.h
// This file is a part of Julia. License is MIT: https://julialang.org/license
#include <llvm/IR/LLVMContext.h>
#include <llvm/IR/Constants.h>
#include <llvm/IR/Module.h>
#include <llvm/IR/Value.h>
#include <llvm/ExecutionEngine/SectionMemoryManager.h>
#include "llvm/ExecutionEngine/Orc/CompileUtils.h"
#include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
#include "llvm/ExecutionEngine/Orc/LambdaResolver.h"
#include "llvm/ExecutionEngine/Orc/LazyEmittingLayer.h"
#if JL_LLVM_VERSION >= 50000
# include "llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h"
#else
# include "llvm/ExecutionEngine/Orc/ObjectLinkingLayer.h"
#endif
#include "llvm/ExecutionEngine/ObjectMemoryBuffer.h"
#include "llvm/ExecutionEngine/JITEventListener.h"
#include "llvm/IR/LegacyPassManager.h"
extern legacy::PassManager *jl_globalPM;
#include <llvm/Target/TargetMachine.h>
#include "julia_assert.h"
extern "C" {
extern int globalUnique;
}
extern TargetMachine *jl_TargetMachine;
extern Module *shadow_output;
extern bool imaging_mode;
#if defined(_OS_WINDOWS_) && defined(_CPU_X86_64_)
extern Function *juliapersonality_func;
#endif
typedef struct {Value *gv; int32_t index;} jl_value_llvm; // uses 1-based indexing
void addTargetPasses(legacy::PassManagerBase *PM, TargetMachine *TM);
void addOptimizationPasses(legacy::PassManagerBase *PM, int opt_level, bool dump_native=false);
void* jl_emit_and_add_to_shadow(GlobalVariable *gv, void *gvarinit = NULL);
void* jl_get_globalvar(GlobalVariable *gv);
GlobalVariable *jl_get_global_for(const char *cname, void *addr, Module *M);
void jl_add_to_shadow(Module *m);
void jl_init_function(Function *f);
bool jl_can_finalize_function(StringRef F);
void jl_finalize_function(StringRef F);
void jl_finalize_module(Module *m, bool shadow);
// Connect Modules via prototypes, each owned by module `M`
static inline GlobalVariable *global_proto(GlobalVariable *G, Module *M = NULL)
{
// Copy the GlobalVariable, but without the initializer, so it becomes a declaration
GlobalVariable *proto = new GlobalVariable(G->getType()->getElementType(),
G->isConstant(), GlobalVariable::ExternalLinkage,
NULL, G->getName(), G->getThreadLocalMode());
proto->copyAttributesFrom(G);
// DLLImport only needs to be set for the shadow module
// it just gets annoying in the JIT
proto->setDLLStorageClass(GlobalValue::DefaultStorageClass);
if (M)
M->getGlobalList().push_back(proto);
return proto;
}
static inline GlobalVariable *prepare_global_in(Module *M, GlobalVariable *G)
{
if (G->getParent() == M)
return G;
GlobalValue *local = M->getNamedValue(G->getName());
if (!local) {
local = global_proto(G, M);
}
return cast<GlobalVariable>(local);
}
void add_named_global(GlobalObject *gv, void *addr, bool dllimport);
template<typename T>
static inline void add_named_global(GlobalObject *gv, T *addr, bool dllimport = true)
{
// cast through integer to avoid c++ pedantic warning about casting between
// data and code pointers
add_named_global(gv, (void*)(uintptr_t)addr, dllimport);
}
void jl_init_jit(Type *T_pjlvalue_);
#if JL_LLVM_VERSION >= 40000
typedef JITSymbol JL_JITSymbol;
// The type that is similar to SymbolInfo on LLVM 4.0 is actually
// `JITEvaluatedSymbol`. However, we only use this type when a JITSymbol
// is expected.
typedef JITSymbol JL_SymbolInfo;
#else
typedef orc::JITSymbol JL_JITSymbol;
typedef RuntimeDyld::SymbolInfo JL_SymbolInfo;
#endif
#if JL_LLVM_VERSION >= 50000
using RTDyldObjHandleT = orc::RTDyldObjectLinkingLayerBase::ObjHandleT;
#else
using RTDyldObjHandleT = orc::ObjectLinkingLayerBase::ObjSetHandleT;
#endif
class JuliaOJIT {
// Custom object emission notification handler for the JuliaOJIT
// TODO: hook up RegisterJITEventListener, instead of hard-coding the GDB and JuliaListener targets
class DebugObjectRegistrar {
public:
DebugObjectRegistrar(JuliaOJIT &JIT);
template <typename ObjSetT, typename LoadResult>
void operator()(RTDyldObjHandleT H, const ObjSetT &Objects, const LoadResult &LOS);
private:
template <typename ObjT, typename LoadResult>
void registerObject(RTDyldObjHandleT H, const ObjT &Object, const LoadResult &LO);
void NotifyGDB(object::OwningBinary<object::ObjectFile> &DebugObj);
std::vector<object::OwningBinary<object::ObjectFile>> SavedObjects;
std::unique_ptr<JITEventListener> JuliaListener;
JuliaOJIT &JIT;
};
struct CompilerT {
CompilerT(JuliaOJIT *pjit)
: jit(*pjit)
{}
object::OwningBinary<object::ObjectFile> operator()(Module &M);
private:
JuliaOJIT &jit;
};
public:
#if JL_LLVM_VERSION >= 50000
typedef orc::RTDyldObjectLinkingLayer ObjLayerT;
typedef orc::IRCompileLayer<ObjLayerT,CompilerT> CompileLayerT;
typedef CompileLayerT::ModuleHandleT ModuleHandleT;
#else
typedef orc::ObjectLinkingLayer<std::reference_wrapper<DebugObjectRegistrar>> ObjLayerT;
typedef orc::IRCompileLayer<ObjLayerT> CompileLayerT;
typedef CompileLayerT::ModuleSetHandleT ModuleHandleT;
#endif
typedef StringMap<void*> SymbolTableT;
typedef object::OwningBinary<object::ObjectFile> OwningObj;
JuliaOJIT(TargetMachine &TM);
void addGlobalMapping(StringRef Name, uint64_t Addr);
void addGlobalMapping(const GlobalValue *GV, void *Addr);
void *getPointerToGlobalIfAvailable(StringRef S);
void *getPointerToGlobalIfAvailable(const GlobalValue *GV);
void addModule(std::unique_ptr<Module> M);
void removeModule(ModuleHandleT H);
JL_JITSymbol findSymbol(const std::string &Name, bool ExportedSymbolsOnly);
JL_JITSymbol findUnmangledSymbol(const std::string Name);
uint64_t getGlobalValueAddress(const std::string &Name);
uint64_t getFunctionAddress(const std::string &Name);
Function *FindFunctionNamed(const std::string &Name);
void RegisterJITEventListener(JITEventListener *L);
const DataLayout& getDataLayout() const;
const Triple& getTargetTriple() const;
private:
std::string getMangledName(const std::string &Name);
std::string getMangledName(const GlobalValue *GV);
TargetMachine &TM;
const DataLayout DL;
// Should be big enough that in the common case, The
// object fits in its entirety
SmallVector<char, 4096> ObjBufferSV;
raw_svector_ostream ObjStream;
legacy::PassManager PM;
MCContext *Ctx;
std::shared_ptr<RTDyldMemoryManager> MemMgr;
DebugObjectRegistrar registrar;
ObjLayerT ObjectLayer;
CompileLayerT CompileLayer;
SymbolTableT GlobalSymbolTable;
SymbolTableT LocalSymbolTable;
};
extern JuliaOJIT *jl_ExecutionEngine;
JL_DLLEXPORT extern LLVMContext jl_LLVMContext;
Pass *createLowerPTLSPass(bool imaging_mode);
Pass *createCombineMulAddPass();
Pass *createLateLowerGCFramePass();
Pass *createLowerExcHandlersPass();
Pass *createGCInvariantVerifierPass(bool Strong);
Pass *createPropagateJuliaAddrspaces();
Pass *createMultiVersioningPass();
Pass *createAllocOptPass();
// Whether the Function is an llvm or julia intrinsic.
static inline bool isIntrinsicFunction(Function *F)
{
return F->isIntrinsic() || F->getName().startswith("julia.");
}