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compilerengine.cpp
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#include "fix_clang_undef_eai.h"
#include "CodeGenFunction.h"
#include "CodeGenModule.h"
#include <clang/CodeGen/ModuleBuilder.h>
#include <clang/CodeGen/CodeGenAction.h>
#include <clang/CodeGen/BackendUtil.h>
#include <clang/Driver/Compilation.h>
#include <clang/Driver/Driver.h>
#include <clang/Driver/Tool.h>
#include <clang/Parse/ParseAST.h>
#include <clang/Sema/Sema.h>
#include <clang/Sema/Template.h>
#include <clang/AST/ASTLambda.h>
#include <clang/AST/Expr.h>
#include <clang/AST/ExprCXX.h>
#include <clang/AST/Decl.h>
#include <clang/AST/DeclCXX.h>
#include <clang/AST/DeclTemplate.h>
#include <clang/AST/AST.h>
#include <clang/AST/ASTImporter.h>
#include <clang/AST/ExternalASTSource.h>
#include <clang/AST/Type.h>
#include <clang/Frontend/CompilerInstance.h>
#include <clang/Frontend/FrontendAction.h>
#include <clang/Frontend/FrontendActions.h>
#include <clang/Frontend/ASTUnit.h>
#include <llvm/Support/Host.h>
#include <llvm/IR/Module.h>
#include <llvm/IR/LLVMContext.h>
#include <llvm/AsmParser/Parser.h>
#include "ivm/dbghelper.h"
#include "ivm/findsymbolvisitor.h"
#include "invokestorage.h"
#include "compilerengine.h"
void test_raw_codegen()
{
clang::CompilerInstance ci;
ci.createASTContext();
ci.createDiagnostics();
clang::ASTContext &astctx = ci.getASTContext();
clang::DiagnosticsEngine &diag = ci.getDiagnostics();
llvm::LLVMContext &vmctx = llvm::getGlobalContext();
llvm::Module mod("piecegen", vmctx);
clang::CodeGenOptions &cgopt = ci.getCodeGenOpts();
llvm::DataLayout dlo("hehhe");
// clang::CodeGen::CodeGenModule cgmod(astctx, cgopt, mod, dlo, diag);
// cgmod.EmitAnnotationString("hhhh");
// clang::CodeGen::CodeGenFunction cgf(cgmod);
}
CompilerEngine::CompilerEngine()
{
this->initCompiler();
// static llvm::Module *jit_types_mod = NULL;
auto load_jit_types_module = []() -> std::unique_ptr<llvm::Module> {
llvm::LLVMContext *ctx = new llvm::LLVMContext();
llvm::Module *module = new llvm::Module("jit_types_in_ce", *ctx);
// load module
QFile fp("./metalize/jit_types.ll");
fp.open(QIODevice::ReadOnly);
QByteArray asm_data = fp.readAll();
fp.close();
char *asm_str = strdup(asm_data.data());
qDebug()<<"llstrlen:"<<strlen(asm_str);
llvm::SMDiagnostic smdiag;
std::unique_ptr<llvm::Module> rmod;
rmod = llvm::parseAssemblyString(asm_str, smdiag, *ctx);
qDebug()<<"rmod="<<rmod.get();
free(asm_str);
return rmod;
};
// mtmod = load_jit_types_module();
// mtmod = NULL;
}
CompilerEngine::~CompilerEngine()
{
}
bool CompilerEngine::initCompiler()
{
clang::CompilerInstance *cis = new clang::CompilerInstance();
clang::CompilerInvocation *civ = new clang::CompilerInvocation();
cis->createDiagnostics();
cis->createFileManager();
cis->createSourceManager(cis->getFileManager());
cis->createFrontendTimer();
// cis.createASTContext();
// cis.createModuleManager();
std::string path = "./myjitqt";
clang::driver::Driver *drv = new clang::driver::Driver(path, llvm::sys::getProcessTriple(),
cis->getDiagnostics());
drv->setTitle("myjitclangpp");
drv->setCheckInputsExist(false);
this->mcis = cis;
this->mciv = civ;
this->mdrv = drv;
static char *argv[] = {
(char*)"myjitqtrunner", (char*)"flycode.cxx",
(char*)"-fPIC", (char*)"-x", (char*)"c++",
(char*)"-I/usr/include/qt", (char*)"-I/usr/include/qt/QtCore",
(char*)"-I/usr/lib/clang/3.5.0/include",
};
static int argc = 8;
char **targv = argv;
llvm::SmallVector<const char*, 16> drv_args(targv, targv + argc);
drv_args.push_back("-S");
clang::driver::Compilation *C = drv->BuildCompilation(drv_args);
const clang::driver::JobList &Jobs = C->getJobs();
const clang::driver::Command *Cmd = llvm::cast<clang::driver::Command>(&(*Jobs.begin()));
const clang::driver::ArgStringList &CCArgs = Cmd->getArguments();
// clang::CompilerInvocation *civ = new clang::CompilerInvocation();
bool bret = clang::CompilerInvocation::CreateFromArgs(*civ,
const_cast<const char**>(CCArgs.data()),
const_cast<const char**>(CCArgs.data()) + CCArgs.size(),
cis->getDiagnostics());
cis->setInvocation(civ);
return true;
}
// 从一个模块转移到另一个模块
bool irfunccpy(llvm::Module *smod, llvm::Function *sfun, llvm::Module *dmod, llvm::Function *dfun)
{
return false;
}
void walk_decl(QStack<clang::Stmt*> &fexpr, clang::Stmt *bstmt, int level)
{
clang::Stmt *stmts = bstmt;
for (auto expr: stmts->children()) {
qDebug()<<"e:"<<expr<<level;
if (expr == 0) {
// bstmt->dumpColor();
DUMP_COLOR(bstmt);
continue;
}
qDebug()<<"e:"<<expr->getStmtClassName()<<level;
// expr->dumpColor();
fexpr.push(expr);
walk_decl(fexpr, expr, level+1);
}
// initors
if (llvm::isa<clang::CXXConstructExpr>(stmts)) {
auto ctor_decl = llvm::cast<clang::CXXConstructExpr>(stmts)->getConstructor();
for (auto ci: ctor_decl->inits()) {
auto e = ci->getInit();
qDebug()<<"ctorinit..."<<e;
// e->dumpColor();
DUMP_COLOR(e);
fexpr.push(e);
walk_decl(fexpr, e, level+1);
}
}
}
// 起始decl，一般是一个函数或者方法的定义
clang::FunctionDecl*
CompilerEngine::find_callee_decl_by_symbol2(clang::Decl *bdecl, QString callee_symbol)
{
qDebug()<<callee_symbol;
clang::Stmt *stmts = bdecl->getBody();
QStack<clang::Stmt*> fexpr; // flat expr
if (stmts != NULL) {
DUMP_COLOR(bdecl);
qDebug()<<"Wooooo, body decl...."<<stmts;
int cnter = 0;
for (auto expr: stmts->children()) {
qDebug()<<"e:"<<cnter++<<expr->getStmtClassName();
// expr->dumpColor();
fexpr.push(expr);
}
walk_decl(fexpr, stmts, 1);
}
if (llvm::isa<clang::CXXConstructorDecl>(bdecl)) {
auto ctor_decl = llvm::cast<clang::CXXConstructorDecl>(bdecl);
for (auto ci: ctor_decl->inits()) {
auto e = ci->getInit();
qDebug()<<"ctorinit..."<<e;
// e->dumpColor();
DUMP_COLOR(e);
fexpr.push(e);
walk_decl(fexpr, e, 1);
}
}
qDebug()<<"flat expr count:"<<fexpr.count();
// bdecl->dumpColor();
auto mgctx = bdecl->getASTContext().createMangleContext();
// 查找可能的函数/方法调用列表表达式。
while (!fexpr.isEmpty()) {
clang::Stmt *s = fexpr.pop();
qDebug()<<"flated..."<<s;
// s->dumpColor();
DUMP_COLOR(s);
if (llvm::isa<clang::CXXConstructExpr>(s)) {
clang::CXXConstructorDecl *d = llvm::cast<clang::CXXConstructExpr>(s)->getConstructor();
std::string str; llvm::raw_string_ostream stm(str);
std::string str2; llvm::raw_string_ostream stm2(str2);
mgctx->mangleCXXCtor(d, clang::Ctor_Base, stm);
mgctx->mangleCXXCtor(d, clang::Ctor_Complete, stm2);
qDebug()<<"mangle name:"<<"base:"<<stm.str().c_str()
<<",complete:"<<stm2.str().c_str()
<<",need:"<<callee_symbol;
if (stm.str() == callee_symbol.toStdString()
|| stm2.str() == callee_symbol.toStdString()) {
if (clang::isa<clang::FunctionDecl>(d)) {
return clang::cast<clang::FunctionDecl>(d);
}
}
}
else if (llvm::isa<clang::CallExpr>(s)) {
auto d = llvm::cast<clang::CallExpr>(s)->getCalleeDecl();
// d->dumpColor();
std::string str; llvm::raw_string_ostream stm(str);
mgctx->mangleName(clang::cast<clang::NamedDecl>(d), stm);
qDebug()<<"mangle name:"<<stm.str().c_str()<<",callee symbol:"<<callee_symbol;
if (stm.str() != callee_symbol.toStdString()) continue;
if (clang::isa<clang::FunctionDecl>(d)) {
return clang::cast<clang::FunctionDecl>(d);
}
assert(1==2);
}
else if (llvm::isa<clang::CXXTemporaryObjectExpr>(s)) {
qDebug()<<"not impled.";
}
else {
// qDebug()<<"do smth."<<s<<s->getStmtClassName();
}
}
return NULL;
}
// 起始decl，一般是一个函数或者方法的定义
clang::FunctionDecl*
CompilerEngine::find_callee_decl_by_symbol(clang::Decl *bdecl, QString callee_symbol)
{
qDebug()<<callee_symbol;
clang::Stmt *stmts = bdecl->getBody();
QStack<clang::Stmt*> fexpr; // flat expr
QVector<clang::CallExpr*> cexpr; // call expr
QVector<clang::CXXTemporaryObjectExpr*> toexpr; // 临时对象生成语句，和call类似，这里会有一个symbol
if (stmts != NULL) {
qDebug()<<"Wooooo...."<<stmts;
int cnter = 0;
for (auto expr: stmts->children()) {
qDebug()<<"e:"<<cnter++<<expr->getStmtClassName();
// expr->dumpColor();
fexpr.push(expr);
}
walk_decl(fexpr, stmts, 1);
}
qDebug()<<"flat expr count:"<<fexpr.count();
auto mgctx = bdecl->getASTContext().createMangleContext();
// 查找可能的函数/方法调用列表表达式。
while (!fexpr.isEmpty()) {
clang::Stmt *s = fexpr.pop();
if (s == NULL) {
qDebug()<<"Why NULL Stmt???"<<fexpr;
// qFatal("Why NULL Stmt???");
continue;
}
int cnter = 0;
for (auto expr: s->children()) {
cnter++;
fexpr.push(expr);
}
// qDebug()<<"push child:"<<cnter<<s->getStmtClassName();
if (clang::isa<clang::CallExpr>(s)) {
cexpr.append(clang::cast<clang::CallExpr>(s));
}
else if (llvm::isa<clang::CXXTemporaryObjectExpr>(s)) {
toexpr.append(llvm::cast<clang::CXXTemporaryObjectExpr>(s));
}
else if (llvm::isa<clang::ReturnStmt>(s)) {
// qDebug()<<"do smth."<<s;
// s->dumpColor();
qDebug()<<"do smth."<<s<<s->getStmtClassName();
}
else {
qDebug()<<"do smth."<<s<<s->getStmtClassName();
}
}
qDebug()<<bdecl<<"call expr count:"<<cexpr.count();
for (auto expr: cexpr) {
qDebug()<<"==========";
// expr->dumpColor();
auto d = expr->getCalleeDecl();
// d->dumpColor();
std::string str; llvm::raw_string_ostream stm(str);
mgctx->mangleName(clang::cast<clang::NamedDecl>(d), stm);
qDebug()<<"mangle name:"<<stm.str().c_str()<<",callee symbol:"<<callee_symbol;
if (stm.str() != callee_symbol.toStdString()) continue;
if (clang::isa<clang::FunctionDecl>(d)) {
return clang::cast<clang::FunctionDecl>(d);
}
assert(1==2);
// for test
if (clang::isa<clang::CXXMethodDecl>(d)) {
auto d1 = clang::cast<clang::CXXMethodDecl>(d);
this->conv_method(bdecl->getASTContext(), d1);
}
}
// qDebug()<<"toexpr count:"<<toexpr.count();
for (auto expr: toexpr) {
// qDebug()<<"see toexpr's decl:"<<expr;
// expr->getConstructor()->dumpColor();
DUMP_COLOR(expr->getConstructor());
return expr->getConstructor();
}
// for ctor's CtorInit
if (llvm::isa<clang::CXXConstructorDecl>(bdecl)) {
auto ctor_decl = llvm::cast<clang::CXXConstructorDecl>(bdecl);
for (auto ci: ctor_decl->inits()) {
auto e = ci->getInit();
qDebug()<<"ctorinit..."<<e;
// e->dumpColor();
DUMP_COLOR(e);
auto d = this->find_callee_decl_by_symbol(bdecl, callee_symbol, e);
if (d) return d;
}
}
return NULL;
}
clang::FunctionDecl*
CompilerEngine::find_callee_decl_by_symbol(clang::Decl *bdecl, QString callee_symbol,
clang::Stmt *bstmt)
{
clang::Stmt *stmts = bstmt;
QStack<clang::Stmt*> fexpr; // flat expr
QVector<clang::CallExpr*> cexpr; // call expr
QVector<clang::CXXConstructExpr*> ctor_expr;
int cnter = 0;
for (auto expr: stmts->children()) {
qDebug()<<"e:"<<cnter++<<expr->getStmtClassName();
// expr->dumpColor();
fexpr.push(expr);
}
walk_decl(fexpr, bstmt, 1);
if (fexpr.count() == 0 && llvm::isa<clang::Expr>(bstmt)) {
fexpr.push(bstmt);
}
qDebug()<<"flat expr count:"<<fexpr.count();
auto mgctx = bdecl->getASTContext().createMangleContext();
// 查找可能的函数/方法调用列表表达式。
while (!fexpr.isEmpty()) {
clang::Stmt *s = fexpr.pop();
for (auto expr: s->children()) {
fexpr.push(expr);
}
if (clang::isa<clang::CallExpr>(s)) {
cexpr.append(clang::cast<clang::CallExpr>(s));
}
else if (clang::isa<clang::MemberExpr>(s)) {
}
else if (clang::isa<clang::DeclRefExpr>(s)) {
auto d = llvm::cast<clang::DeclRefExpr>(s)->getDecl();
qDebug()<<"dddddddref"<<d->getName().data();
// d->dumpColor();
DUMP_COLOR(d);
if (0) {
std::string str; llvm::raw_string_ostream stm(str);
mgctx->mangleName(clang::cast<clang::NamedDecl>(d), stm);
qDebug()<<"mangle name:"<<stm.str().c_str();
}
}
else if (llvm::isa<clang::CXXConstructExpr>(s)) {
ctor_expr.append(llvm::cast<clang::CXXConstructExpr>(s));
}
else if (llvm::isa<clang::CXXDefaultArgExpr>(s)) {
auto *daexpr = llvm::cast<clang::CXXDefaultArgExpr>(s);
auto *e = daexpr->getExpr();
// e->dumpColor();
DUMP_COLOR(e);
if (llvm::isa<clang::CXXConstructExpr>(e)) {
ctor_expr.append(llvm::cast<clang::CXXConstructExpr>(e));
QStack<clang::Stmt*> texpr; // flat expr
walk_decl(texpr, e, 1);
qDebug()<<texpr.count();
while (!texpr.isEmpty()) {
clang::Stmt *s = texpr.pop();
if (llvm::isa<clang::CXXConstructExpr>(s)) {
ctor_expr.append(llvm::cast<clang::CXXConstructExpr>(s));
}
}
}
}
else {
qDebug()<<"stmt..."<<s<<s->getStmtClassName();
}
}
if (cexpr.count() == 0 && llvm::isa<clang::CallExpr>(bstmt)) {
cexpr.append(llvm::cast<clang::CallExpr>(bstmt));
}
qDebug()<<"call expr count:"<<cexpr.count()<<ctor_expr.count();
for (auto expr: cexpr) {
qDebug()<<"==========";
// expr->dumpColor();
auto d = expr->getCalleeDecl();
// d->dumpColor();
std::string str; llvm::raw_string_ostream stm(str);
mgctx->mangleName(clang::cast<clang::NamedDecl>(d), stm);
qDebug()<<"mangle name:"<<stm.str().c_str();
if (stm.str() != callee_symbol.toStdString()) continue;
if (clang::isa<clang::FunctionDecl>(d)) {
return clang::cast<clang::FunctionDecl>(d);
}
assert(1==2);
// for test
if (clang::isa<clang::CXXMethodDecl>(d)) {
auto d1 = clang::cast<clang::CXXMethodDecl>(d);
this->conv_method(bdecl->getASTContext(), d1);
}
}
for (auto expr: ctor_expr) {
auto cd = expr->getConstructor();
std::string str; llvm::raw_string_ostream stm(str);
std::string str2; llvm::raw_string_ostream stm2(str2);
mgctx->mangleCXXCtor(cd, clang::Ctor_Base, stm);
mgctx->mangleCXXCtor(cd, clang::Ctor_Complete, stm2);
qDebug()<<"mangle name:"<<"base:"<<stm.str().c_str()
<<",complete:"<<stm2.str().c_str()
<<",need:"<<callee_symbol;
if (stm.str() == callee_symbol.toStdString()
|| stm2.str() == callee_symbol.toStdString()) {
if (clang::isa<clang::FunctionDecl>(cd)) {
return clang::cast<clang::FunctionDecl>(cd);
}
}
}
return NULL;
}
// 第一种方式，拿到还未定义的symbol，到ast中查找
// 第二种方式，解析C++方法的源代码，找到这个未定义的symbol，从decl再把它编译成ll，效率更好。
void CompilerEngine::decl2def(llvm::Module *mod, clang::ASTContext &ctx,
clang::CodeGen::CodeGenModule &cgmod,
clang::Decl *decl, int level, QHash<QString, bool> noinlined)
{
QHash<QString, bool> efuns;
/*llvm::Module *jit_types_mod = NULL;
if (jit_types_mod == NULL) {
jit_types_mod = mtmod;
// jit_types_mod->dump();
for (auto &f: jit_types_mod->getFunctionList()) {
efuns.insert(QString(f.getName().data()), true);
}
}
qDebug()<<"exists funcs:"<<efuns.count()<<efuns;
*/
auto llfunc_cpy = []() {
// emu empty for compile
llvm::Module *jit_types_mod = NULL;
llvm::Module *mod = NULL;
QString fname;
// copy可能遇到需要递归的指定，如call，或者一些全局变量也需要同时处理。
// 还是比较复杂的。
auto srcf = jit_types_mod->getFunction(fname.toLatin1().data());
auto dstf = mod->getFunction(fname.toLatin1().data());
llvm::IRBuilder<> builder(mod->getContext());
// llvm::BasicBlock *entry = llvm::BasicBlock::Create(mod->getContext(),
// "clvm_func_entrypoint", dstf);
// builder.SetInsertPoint(entry);
// qDebug()<<entry<<dstf;
for (auto &blk: *srcf) {
qDebug()<<","<<blk.getName().data()<<",";
llvm::BasicBlock *tb = llvm::BasicBlock::Create(mod->getContext(),
blk.getName(), dstf);
builder.SetInsertPoint(tb);
for (auto &ins: blk) {
auto ni = ins.clone();
builder.Insert(ni);
qDebug()<<&blk<<&ins<<ins.getName().data()<<"opc:"<<ins.getOpcodeName()<<ins.getOpcode();
if (ins.getOpcode() == llvm::Instruction::Call) {
llvm::CallInst *ci = llvm::cast<llvm::CallInst>(ni);
qDebug()<<"call arg num:"<<ci->getNumArgOperands();
auto called_func = ci->getArgOperand(0);
qDebug()<<"afun?"<<called_func->getName().data()
<<llvm::isa<llvm::Function>(called_func);
}
}
}
};
int copyed = 0;
QVector<QString> gfuns;
for (auto &f: mod->getFunctionList()) {
QString fname = f.getName().data();
qDebug()<<"name:"<<f.getName().data()<<f.size()<<"decl:"<<f.isDeclaration();
if (!f.isDeclaration()) {
continue;
}
if (noinlined.contains(fname)) {
continue;
}
// 如果判断是不是inline的呢。
if (efuns.contains(fname)) {
// copy function from prepared module
qDebug()<<"copying func:"<<fname;
continue;
copyed ++;
continue;
}
gfuns.append(fname);
}
qDebug()<<"need gen funs:"<<gfuns.count()<<copyed;
if (gfuns.count() == 0 && copyed == 0) return;
// assert(islined and hasinlinedbody)
auto get_decl_with_body = [](clang::CXXMethodDecl *mth) -> decltype(mth) {
if (mth->hasInlineBody()) return mth;
int cnt = 0;
for (auto rd: mth->redecls()) cnt++;
if (cnt == 1) return mth;
for (auto rd: mth->redecls()) {
if (rd == mth) continue;
return (decltype(mth))rd;
}
return 0;
};
auto genmth = [](clang::CodeGen::CodeGenModule &cgm,
clang::CodeGen::CodeGenFunction &cgf,
clang::CXXMethodDecl *decl) -> bool {
clang::CodeGen::CodeGenTypes &cgtypes = cgm.getTypes();
const clang::CodeGen::CGFunctionInfo &FI =
cgtypes.arrangeCXXMethodDeclaration(decl);
llvm::FunctionType *FTy = cgtypes.GetFunctionType(FI);
clang::QualType retype = decl->getReturnType();
llvm::Type *lvtype = cgtypes.ConvertType(retype);
llvm::Constant * v = cgm.GetAddrOfFunction(decl, FTy,
false, false);
llvm::Function *f = llvm::cast<llvm::Function>(v);
qDebug()<<"dbg func:"<<f<<f->arg_size()
<< cgf.CapturedStmtInfo;
// f->viewCFG();
// clang::Stmt *stmt = decl->getBody();
clang::CodeGen::FunctionArgList alist;
cgf.GenerateCode(clang::GlobalDecl(decl), f, FI);
f->addFnAttr(llvm::Attribute::AlwaysInline);
cgm.setFunctionLinkage(decl, f);
return false;
};
// TODO 无法生成正确的函数参数信息，所有参数类型全部成了i64了
// eg. declare void @_ZN7QObject7connectEPKS_PKcS1_S3_N2Qt14ConnectionTypeE
// (%"class.QMetaObject::Connection"* sret, i64, i64, i64, i64, i32) #0
auto genmth_decl = [](clang::CodeGen::CodeGenModule &cgm,
clang::CodeGen::CodeGenFunction &cgf,
clang::CXXMethodDecl *decl
) -> bool {
clang::CodeGen::CodeGenTypes &cgtypes = cgm.getTypes();
const clang::CodeGen::CGFunctionInfo &FI =
cgtypes.arrangeCXXMethodDeclaration(decl);
llvm::FunctionType *FTy = cgtypes.GetFunctionType(FI);
clang::QualType retype = decl->getReturnType();
llvm::Type *lvtype = cgtypes.ConvertType(retype);
cgm.EmitGlobal(decl);
llvm::Constant * v = cgm.GetAddrOfFunction(decl, FTy,
false, false);
llvm::Function *f = llvm::cast<llvm::Function>(v);
// FTy->dump();
qDebug()<<"dbg func:"<<f<<f->arg_size()
<< cgf.CapturedStmtInfo<<decl->param_size();
int cnter = 0;
for (auto &arg: f->getArgumentList()) {
if (arg.hasStructRetAttr()) continue; // skip sret
if (!decl->isStatic()) continue; // skip this
// qDebug()<<cnter<<cgtypes.ConvertType(decl->getParamDecl(cnter)->getType());
arg.mutateType(cgtypes.ConvertType(decl->getParamDecl(cnter++)->getType()));
// 该函数执行后，mod->dump()看不出来变化，但是在用程序检测的时候却改变了。
}
return false;
};
for (auto fname: gfuns) {
auto d = find_callee_decl_by_symbol(decl, fname);
if (d == NULL) continue;
if (clang::isa<clang::CXXMethodDecl>(d)) {
auto d1 = get_decl_with_body(clang::cast<clang::CXXMethodDecl>(d));
clang::CodeGen::CodeGenFunction cgf(cgmod);
if (d1->isInlined()) {
genmth(cgmod, cgf, d1);
} else {
genmth_decl(cgmod, cgf, d1);
}
}
// mod->dump();
DUMP_IR(mod);
exit(-1);
}
if (level > 10) {
qDebug()<<"maybe too much recursive level.";
exit(-1);
}
decl2def(mod, ctx, cgmod, decl, ++level, noinlined);
}
// todo 还需要一个递归生成的过程，多次检查生成的结果是否有inline方法
llvm::Module* CompilerEngine::conv_ctor(clang::ASTContext &ctx, clang::CXXConstructorDecl *ctor)
{
clang::CompilerInstance ci;
// ci.createASTContext();
ci.createDiagnostics();
ci.createFileManager();
clang::DiagnosticsEngine &diag = ci.getDiagnostics();
clang::CodeGenOptions &cgopt = ci.getCodeGenOpts();
auto vmctx = new llvm::LLVMContext();
auto mod = new llvm::Module("piecegen", *vmctx);
mod->setDataLayout(ctx.getTargetInfo().getTargetDescription());
// llvm::DataLayout dlo("e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128");
llvm::DataLayout dlo(ctx.getTargetInfo().getTargetDescription());
clang::HeaderSearchOptions headersearchopts;
clang::PreprocessorOptions ppopts;
clang::CodeGen::CodeGenModule cgmod(ctx, headersearchopts, ppopts, cgopt, *mod, dlo, diag);
auto &cgtypes = cgmod.getTypes();
auto cgf = new clang::CodeGen::CodeGenFunction(cgmod);
// assert(islined and hasinlinedbody)
auto get_decl_with_body = [](clang::CXXConstructorDecl *ctor) -> decltype(ctor) {
if (ctor->hasInlineBody()) return ctor;
int cnt = 0;
for (auto rd: ctor->redecls()) cnt++;
if (cnt == 1) return ctor;
for (auto rd: ctor->redecls()) {
if (rd == ctor) continue;
return (decltype(ctor))rd;
}
return 0;
};
ctor = get_decl_with_body(ctor);
// try ctor base , 能生成正确的Base代码了
const clang::CodeGen::CGFunctionInfo &FIB =
cgtypes.arrangeCXXStructorDeclaration(ctor, clang::CodeGen::StructorType::Base);
llvm::FunctionType *FTyB = cgtypes.GetFunctionType(FIB);
llvm::Constant *ctor_base_val =
cgmod.getAddrOfCXXStructor(ctor, clang::CodeGen::StructorType::Base, &FIB, FTyB, true);
llvm::Function *ctor_base_fn = clang::cast<llvm::Function>(ctor_base_val);
clang::CodeGen::FunctionArgList alist;
QHash<QString, bool> noinlined; // 不需要生成define的symbol，在decl2def中使用。
if (ctor->isInlined()) {
cgmod.setFunctionLinkage(clang::GlobalDecl(ctor, clang::Ctor_Base), ctor_base_fn);
cgf->GenerateCode(clang::GlobalDecl(ctor, clang::Ctor_Base), ctor_base_fn, FIB);
} else {
noinlined[ctor_base_fn->getName().data()] = true;
}
// mod->dump();
DUMP_IR(mod);
// ??? 没用了吧
QHash<QString, llvm::Function*> usyms;
for (auto &f: mod->getFunctionList()) {
qDebug()<<"name:"<<f.getName().data()<<f.size()<<f.isDeclaration();
if (f.isDeclaration()) usyms.insert(QString(f.getName().data()), &f);
}
// ctor->dumpColor();
DUMP_COLOR(ctor);
// 遍历body stmt
auto s = ctor->getBody();
// s->dumpColor();
DUMP_COLOR(s);
// 遍历Ctor init
for (auto i: ctor->inits()) {
auto s = i->getInit();
auto cs = clang::cast<clang::CallExpr>(s);
// s->dumpColor();
DUMP_COLOR(s);
auto d = cs->getCalleeDecl();
// d->dumpColor();
DUMP_COLOR(d);
auto sd = clang::cast<clang::CXXMethodDecl>(d);
qDebug()<<"call name:"<<cgmod.getMangledName(clang::cast<clang::CXXMethodDecl>(d)).data();
// this->conv_ctor(ctx, sd);
QString tmp = cgmod.getMangledName(sd).data();
if (usyms.contains(tmp)) {
llvm::Function *f = usyms.value(tmp);
// need def
qDebug()<<"need def:"<<tmp<<f;
}
break;
}
// mod->dump();
DUMP_IR(mod);
decl2def(mod, ctx, cgmod, ctor, 0, noinlined);
// mod->dump();
DUMP_IR(mod);
return mod;
}
// 这个方法支持普通方法，static也可以,非template
// 已知问题，不支持模板类中的静态方法。
// TODO 模板类中的静态方法支持
llvm::Module* CompilerEngine::conv_method(clang::ASTContext &ctx, clang::CXXMethodDecl *mth)
{
clang::CompilerInstance ci;
// ci.createASTContext();
ci.createDiagnostics();
ci.createFileManager();
clang::DiagnosticsEngine &diag = ci.getDiagnostics();
clang::CodeGenOptions &cgopt = ci.getCodeGenOpts();
auto vmctx = new llvm::LLVMContext();
auto mod = new llvm::Module("piecegen2", *vmctx);
mod->setDataLayout(ctx.getTargetInfo().getTargetDescription());
// llvm::DataLayout dlo("e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128");
llvm::DataLayout dlo(ctx.getTargetInfo().getTargetDescription());
clang::HeaderSearchOptions headersearchopts;
clang::PreprocessorOptions ppopts;
clang::CodeGen::CodeGenModule cgmod(ctx, headersearchopts, ppopts, cgopt, *mod, dlo, diag);
auto &cgtypes = cgmod.getTypes();
auto cgf = new clang::CodeGen::CodeGenFunction(cgmod);
// assert(islined and hasinlinedbody)
auto get_decl_with_body = [](clang::CXXMethodDecl *mth) -> decltype(mth) {
if (mth->hasInlineBody()) return mth;
int cnt = 0;
for (auto rd: mth->redecls()) cnt++;
if (cnt == 1) return mth;
for (auto rd: mth->redecls()) {
if (rd == mth) continue;
return (decltype(mth))rd;
}
return 0;
};
mth = get_decl_with_body(mth);
auto genmth = [](clang::CodeGen::CodeGenModule &cgm,
clang::CodeGen::CodeGenFunction &cgf,
clang::CXXMethodDecl *decl) -> bool {
clang::CodeGen::CodeGenTypes &cgtypes = cgm.getTypes();
const clang::CodeGen::CGFunctionInfo &FI =
cgtypes.arrangeCXXMethodDeclaration(decl);
llvm::FunctionType *FTy = cgtypes.GetFunctionType(FI);
clang::QualType retype = decl->getReturnType();
llvm::Type *lvtype = cgtypes.ConvertType(retype);
llvm::Constant * v = cgm.GetAddrOfFunction(decl, FTy,
false, false);
llvm::Function *f = llvm::cast<llvm::Function>(v);
qDebug()<<"dbg func:"<<f<<f->arg_size()
<< cgf.CapturedStmtInfo;
// f->viewCFG();
// clang::Stmt *stmt = decl->getBody();
clang::CodeGen::FunctionArgList alist;
cgf.GenerateCode(clang::GlobalDecl(decl), f, FI);
f->addFnAttr(llvm::Attribute::AlwaysInline);
cgm.setFunctionLinkage(decl, f);
return false;
};
// TODO 无法生成正确的函数参数信息，所有参数类型全部成了i64了
// eg. declare void @_ZN7QObject7connectEPKS_PKcS1_S3_N2Qt14ConnectionTypeE
// (%"class.QMetaObject::Connection"* sret, i64, i64, i64, i64, i32) #0
auto genmth_decl = [](clang::CodeGen::CodeGenModule &cgm,
clang::CodeGen::CodeGenFunction &cgf,
clang::CXXMethodDecl *decl
) -> bool {
clang::CodeGen::CodeGenTypes &cgtypes = cgm.getTypes();
const clang::CodeGen::CGFunctionInfo &FI =
cgtypes.arrangeCXXMethodDeclaration(decl);
llvm::FunctionType *FTy = cgtypes.GetFunctionType(FI);
clang::QualType retype = decl->getReturnType();
llvm::Type *lvtype = cgtypes.ConvertType(retype);
cgm.EmitGlobal(decl);
llvm::Constant * v = cgm.GetAddrOfFunction(decl, FTy,
false, false);
llvm::Function *f = llvm::cast<llvm::Function>(v);
// FTy->dump();
qDebug()<<"dbg func:"<<f<<f->arg_size()
<< cgf.CapturedStmtInfo<<decl->param_size();
int cnter = 0;
for (auto &arg: f->getArgumentList()) {
if (arg.hasStructRetAttr()) continue; // skip sret
if (!decl->isStatic()) continue; // skip this
// qDebug()<<cnter<<cgtypes.ConvertType(decl->getParamDecl(cnter)->getType());
arg.mutateType(cgtypes.ConvertType(decl->getParamDecl(cnter++)->getType()));
// 该函数执行后，mod->dump()看不出来变化，但是在用程序检测的时候却改变了。
}
return false;
};
QHash<QString, bool> noinlined; // 不需要生成define的symbol，在decl2def中使用。
if (mth->isInlined()) {
genmth(cgmod, *cgf, mth);
} else {
genmth_decl(cgmod, *cgf, mth);
noinlined[cgmod.getMangledName(mth).data()] = true;
}
qDebug()<<"dump module after gencode...";
// mod->dump();
DUMP_IR(mod);
decl2def(mod, ctx, cgmod, mth, 0, noinlined);
qDebug()<<"dump module after all...";
// mod->dump();
DUMP_IR(mod);
return mod;
}
// TODO 使用 MangleContext::MangleCtor 代替当前方式。
QString CompilerEngine::mangle_ctor(clang::ASTContext &ctx, clang::CXXConstructorDecl *ctor)
{
clang::CompilerInstance ci;
// ci.createASTContext();
ci.createDiagnostics();
ci.createFileManager();
clang::DiagnosticsEngine &diag = ci.getDiagnostics();
clang::CodeGenOptions &cgopt = ci.getCodeGenOpts();
auto vmctx = new llvm::LLVMContext();
auto mod = new llvm::Module("piecegen", *vmctx);
mod->setDataLayout(ctx.getTargetInfo().getTargetDescription());
// llvm::DataLayout dlo("e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128");
llvm::DataLayout dlo(ctx.getTargetInfo().getTargetDescription());
clang::HeaderSearchOptions headersearchopts;
clang::PreprocessorOptions ppopts;
clang::CodeGen::CodeGenModule cgmod(ctx, headersearchopts, ppopts, cgopt, *mod, dlo, diag);
auto &cgtypes = cgmod.getTypes();
auto cgf = new clang::CodeGen::CodeGenFunction(cgmod);
auto vm_symname = cgmod.getMangledName(clang::GlobalDecl(ctor, clang::Ctor_Base));
QString symname = vm_symname.data();
return symname;
}
// TODO 使用 MangleContext::MangleCtor 代替当前方式。
QString CompilerEngine::mangle_dtor(clang::ASTContext &ctx, clang::CXXDestructorDecl *dtor)
{
clang::CompilerInstance ci;
// ci.createASTContext();
ci.createDiagnostics();
ci.createFileManager();
clang::DiagnosticsEngine &diag = ci.getDiagnostics();
clang::CodeGenOptions &cgopt = ci.getCodeGenOpts();
auto vmctx = new llvm::LLVMContext();
auto mod = new llvm::Module("piecegen", *vmctx);
mod->setDataLayout(ctx.getTargetInfo().getTargetDescription());
// llvm::DataLayout dlo("e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128");
llvm::DataLayout dlo(ctx.getTargetInfo().getTargetDescription());
clang::HeaderSearchOptions headersearchopts;
clang::PreprocessorOptions ppopts;
clang::CodeGen::CodeGenModule cgmod(ctx, headersearchopts, ppopts, cgopt, *mod, dlo, diag);
auto &cgtypes = cgmod.getTypes();
auto cgf = new clang::CodeGen::CodeGenFunction(cgmod);
auto vm_symname = cgmod.getMangledName(clang::GlobalDecl(dtor, clang::Dtor_Base));
QString symname = vm_symname.data();
return symname;
}
QString CompilerEngine::mangle_method(clang::ASTContext &ctx, clang::CXXMethodDecl *mth)
{
clang::CompilerInstance ci;
// ci.createASTContext();
ci.createDiagnostics();
ci.createFileManager();
clang::DiagnosticsEngine &diag = ci.getDiagnostics();
clang::CodeGenOptions &cgopt = ci.getCodeGenOpts();
auto vmctx = new llvm::LLVMContext();
auto mod = new llvm::Module("piecegen", *vmctx);
mod->setDataLayout(ctx.getTargetInfo().getTargetDescription());
// llvm::DataLayout dlo("e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128");
llvm::DataLayout dlo(ctx.getTargetInfo().getTargetDescription());
clang::HeaderSearchOptions headersearchopts;
clang::PreprocessorOptions ppopts;
clang::CodeGen::CodeGenModule cgmod(ctx, headersearchopts, ppopts, cgopt, *mod, dlo, diag);
auto &cgtypes = cgmod.getTypes();
auto cgf = new clang::CodeGen::CodeGenFunction(cgmod);
auto vm_symname = cgmod.getMangledName(clang::GlobalDecl(mth));
QString symname = vm_symname.data();
return symname;
return QString();
}