mirror of
https://github.com/ldc-developers/ldc.git
synced 2025-05-08 20:06:03 +03:00
290 lines
8.3 KiB
C++
290 lines
8.3 KiB
C++
//===-- compile.cpp -------------------------------------------------------===//
|
||
//
|
||
// LDC – the LLVM D compiler
|
||
//
|
||
// This file is distributed under the Boost Software License. See the LICENSE
|
||
// file for details.
|
||
//
|
||
//===----------------------------------------------------------------------===//
|
||
//
|
||
// Jit runtime - shared library part.
|
||
// Defines jit runtime entry point and main compilation routines.
|
||
//
|
||
//===----------------------------------------------------------------------===//
|
||
|
||
#include <cassert>
|
||
#include <map>
|
||
#include <memory>
|
||
#include <sstream>
|
||
#include <stdexcept>
|
||
#include <type_traits>
|
||
|
||
#include "callback_ostream.h"
|
||
#include "context.h"
|
||
#include "jit_context.h"
|
||
#include "optimizer.h"
|
||
#include "utils.h"
|
||
|
||
#include "llvm/Bitcode/BitcodeReader.h"
|
||
#include "llvm/ExecutionEngine/JITSymbol.h"
|
||
#include "llvm/IR/Mangler.h"
|
||
#include "llvm/Linker/Linker.h"
|
||
#include "llvm/Support/raw_ostream.h"
|
||
#include "llvm/Transforms/Utils/Cloning.h"
|
||
|
||
namespace {
|
||
|
||
#pragma pack(push, 1)
|
||
|
||
struct RtCompileFuncList {
|
||
const char *name;
|
||
void **func;
|
||
};
|
||
|
||
struct RtCompileSymList {
|
||
const char *name;
|
||
void *sym;
|
||
};
|
||
|
||
struct RtCompileVarList {
|
||
const char *name;
|
||
const void *init;
|
||
};
|
||
|
||
struct RtCompileModuleList {
|
||
int32_t version;
|
||
RtCompileModuleList *next;
|
||
const char *irData;
|
||
int32_t irDataSize;
|
||
const RtCompileFuncList *funcList;
|
||
int32_t funcListSize;
|
||
const RtCompileSymList *symList;
|
||
int32_t symListSize;
|
||
const RtCompileVarList *varList;
|
||
int32_t varListSize;
|
||
};
|
||
|
||
#pragma pack(pop)
|
||
|
||
std::string decorate(const std::string &name,
|
||
const llvm::DataLayout &datalayout) {
|
||
llvm::SmallVector<char, 64> ret;
|
||
llvm::Mangler::getNameWithPrefix(ret, name, datalayout);
|
||
assert(!ret.empty());
|
||
return std::string(ret.data(), ret.size());
|
||
}
|
||
|
||
JITContext &getJit() {
|
||
static JITContext jit;
|
||
return jit;
|
||
}
|
||
|
||
void setRtCompileVars(const Context &context, llvm::Module &module,
|
||
llvm::ArrayRef<RtCompileVarList> vals) {
|
||
for (auto &&val : vals) {
|
||
setRtCompileVar(context, module, val.name, val.init);
|
||
}
|
||
}
|
||
|
||
template <typename T>
|
||
auto toArray(T *ptr, size_t size)
|
||
-> llvm::ArrayRef<typename std::remove_cv<T>::type> {
|
||
return llvm::ArrayRef<typename std::remove_cv<T>::type>(ptr, size);
|
||
}
|
||
|
||
void *resolveSymbol(llvm::JITSymbol &symbol) {
|
||
auto addr = symbol.getAddress();
|
||
if (!addr) {
|
||
consumeError(addr.takeError());
|
||
return nullptr;
|
||
} else {
|
||
return reinterpret_cast<void *>(addr.get());
|
||
}
|
||
}
|
||
|
||
void dumpModule(const Context &context, const llvm::Module &module,
|
||
DumpStage stage) {
|
||
if (nullptr != context.dumpHandler) {
|
||
auto callback = [&](const char *str, size_t len) {
|
||
context.dumpHandler(context.dumpHandlerData, stage, str, len);
|
||
};
|
||
|
||
CallbackOstream os(callback);
|
||
module.print(os, nullptr, false, true);
|
||
}
|
||
}
|
||
|
||
void setFunctionsTarget(llvm::Module &module, const llvm::TargetMachine &TM) {
|
||
// Set function target cpu to host if it wasn't set explicitly
|
||
for (auto &&func : module.functions()) {
|
||
if (!func.hasFnAttribute("target-cpu")) {
|
||
func.addFnAttr("target-cpu", TM.getTargetCPU());
|
||
}
|
||
|
||
if (!func.hasFnAttribute("target-features")) {
|
||
auto featStr = TM.getTargetFeatureString();
|
||
if (!featStr.empty()) {
|
||
func.addFnAttr("target-features", featStr);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
struct JitFinaliser final {
|
||
JITContext &jit;
|
||
bool finalized = false;
|
||
explicit JitFinaliser(JITContext &j) : jit(j) {}
|
||
~JitFinaliser() {
|
||
if (!finalized) {
|
||
jit.reset();
|
||
}
|
||
}
|
||
|
||
void finalze() { finalized = true; }
|
||
};
|
||
|
||
template <typename F>
|
||
void enumModules(const RtCompileModuleList *modlist_head,
|
||
const Context &context, F &&fun) {
|
||
auto current = modlist_head;
|
||
while (current != nullptr) {
|
||
interruptPoint(context, "check version");
|
||
if (current->version != ApiVersion) {
|
||
fatal(context, "Module was built with different jit api version");
|
||
}
|
||
fun(*current);
|
||
current = current->next;
|
||
}
|
||
}
|
||
|
||
void rtCompileProcessImplSoInternal(const RtCompileModuleList *modlist_head,
|
||
const Context &context) {
|
||
if (nullptr == modlist_head) {
|
||
// No jit modules to compile
|
||
return;
|
||
}
|
||
interruptPoint(context, "Init");
|
||
JITContext &myJit = getJit();
|
||
|
||
std::vector<std::pair<std::string, void **>> functions;
|
||
std::unique_ptr<llvm::Module> finalModule;
|
||
auto &symMap = myJit.getSymMap();
|
||
symMap.clear();
|
||
auto &layout = myJit.getDataLayout();
|
||
OptimizerSettings settings;
|
||
settings.optLevel = context.optLevel;
|
||
settings.sizeLevel = context.sizeLevel;
|
||
enumModules(modlist_head, context, [&](const RtCompileModuleList ¤t) {
|
||
interruptPoint(context, "load IR");
|
||
auto buff = llvm::MemoryBuffer::getMemBuffer(
|
||
llvm::StringRef(current.irData,
|
||
static_cast<std::size_t>(current.irDataSize)),
|
||
"", false);
|
||
interruptPoint(context, "parse IR");
|
||
auto mod = llvm::parseBitcodeFile(*buff, myJit.getContext());
|
||
if (!mod) {
|
||
fatal(context, "Unable to parse IR");
|
||
} else {
|
||
llvm::Module &module = **mod;
|
||
const auto name = module.getName();
|
||
interruptPoint(context, "Verify module", name.data());
|
||
verifyModule(context, module);
|
||
|
||
dumpModule(context, module, DumpStage::OriginalModule);
|
||
setFunctionsTarget(module, myJit.getTargetMachine());
|
||
|
||
module.setDataLayout(myJit.getTargetMachine().createDataLayout());
|
||
|
||
interruptPoint(context, "setRtCompileVars", name.data());
|
||
setRtCompileVars(context, module,
|
||
toArray(current.varList,
|
||
static_cast<std::size_t>(current.varListSize)));
|
||
|
||
if (nullptr == finalModule) {
|
||
finalModule = std::move(*mod);
|
||
} else {
|
||
if (llvm::Linker::linkModules(*finalModule, std::move(*mod))) {
|
||
fatal(context, "Can't merge module");
|
||
}
|
||
}
|
||
|
||
for (auto &&fun : toArray(current.funcList, static_cast<std::size_t>(
|
||
current.funcListSize))) {
|
||
functions.push_back(std::make_pair(fun.name, fun.func));
|
||
}
|
||
|
||
for (auto &&sym : toArray(current.symList, static_cast<std::size_t>(
|
||
current.symListSize))) {
|
||
symMap.insert(std::make_pair(decorate(sym.name, layout), sym.sym));
|
||
}
|
||
}
|
||
});
|
||
|
||
assert(nullptr != finalModule);
|
||
dumpModule(context, *finalModule, DumpStage::MergedModule);
|
||
interruptPoint(context, "Optimize final module");
|
||
optimizeModule(context, myJit.getTargetMachine(), settings, *finalModule);
|
||
|
||
interruptPoint(context, "Verify final module");
|
||
verifyModule(context, *finalModule);
|
||
|
||
dumpModule(context, *finalModule, DumpStage::OptimizedModule);
|
||
|
||
interruptPoint(context, "Codegen final module");
|
||
if (nullptr != context.dumpHandler) {
|
||
auto callback = [&](const char *str, size_t len) {
|
||
context.dumpHandler(context.dumpHandlerData, DumpStage::FinalAsm, str,
|
||
len);
|
||
};
|
||
|
||
CallbackOstream os(callback);
|
||
if (myJit.addModule(std::move(finalModule), &os)) {
|
||
fatal(context, "Can't codegen module");
|
||
}
|
||
} else {
|
||
if (myJit.addModule(std::move(finalModule), nullptr)) {
|
||
fatal(context, "Can't codegen module");
|
||
}
|
||
}
|
||
|
||
JitFinaliser jitFinalizer(myJit);
|
||
interruptPoint(context, "Resolve functions");
|
||
for (auto &&fun : functions) {
|
||
auto decorated = decorate(fun.first, layout);
|
||
auto symbol = myJit.findSymbol(decorated);
|
||
auto addr = resolveSymbol(symbol);
|
||
if (nullptr == addr) {
|
||
std::string desc = std::string("Symbol not found in jitted code: \"") +
|
||
fun.first + "\" (\"" + decorated + "\")";
|
||
fatal(context, desc);
|
||
} else {
|
||
*fun.second = addr;
|
||
}
|
||
|
||
if (nullptr != context.interruptPointHandler) {
|
||
std::stringstream ss;
|
||
ss << fun.first << " to " << addr;
|
||
auto str = ss.str();
|
||
interruptPoint(context, "Resolved", str.c_str());
|
||
}
|
||
}
|
||
jitFinalizer.finalze();
|
||
}
|
||
|
||
} // anon namespace
|
||
|
||
extern "C" {
|
||
|
||
#ifdef _WIN32
|
||
__declspec(dllexport)
|
||
#else
|
||
__attribute__ ((visibility ("default")))
|
||
#endif
|
||
void JIT_API_ENTRYPOINT(const void *modlist_head, const Context *context,
|
||
size_t contextSize) {
|
||
assert(nullptr != context);
|
||
assert(sizeof(*context) == contextSize);
|
||
rtCompileProcessImplSoInternal(
|
||
static_cast<const RtCompileModuleList *>(modlist_head), *context);
|
||
}
|
||
}
|