void SimpleInlinePass::run_pass(DexClassesVector& dexen, ConfigFiles& cfg, PassManager& mgr) {
const auto no_inline = no_inline_annos(m_no_inline_annos, cfg);
auto scope = build_class_scope(dexen);
// gather all inlinable candidates
auto methods = gather_non_virtual_methods(scope, no_inline);
select_single_called(scope, methods);
auto resolver = [&](DexMethod* method, MethodSearch search) {
return resolve_method(method, search, resolved_refs);
};
// inline candidates
MultiMethodInliner inliner(
scope, dexen[0], inlinable, resolver, m_inliner_config);
inliner.inline_methods();
// delete all methods that can be deleted
auto inlined = inliner.get_inlined();
size_t inlined_count = inlined.size();
size_t deleted = delete_methods(scope, inlined, resolver);
TRACE(SINL, 3, "recursive %ld\n", inliner.get_info().recursive);
TRACE(SINL, 3, "blacklisted meths %ld\n", inliner.get_info().blacklisted);
TRACE(SINL, 3, "more than 16 regs %ld\n",
inliner.get_info().more_than_16regs);
TRACE(SINL, 3, "try/catch in callee %ld\n",
inliner.get_info().try_catch_block);
TRACE(SINL, 3, "try/catch in caller %ld\n",
inliner.get_info().caller_tries);
TRACE(SINL, 3, "virtualizing methods %ld\n", inliner.get_info().need_vmethod);
TRACE(SINL, 3, "invoke super %ld\n", inliner.get_info().invoke_super);
TRACE(SINL, 3, "override inputs %ld\n", inliner.get_info().write_over_ins);
TRACE(SINL, 3, "escaped virtual %ld\n", inliner.get_info().escaped_virtual);
TRACE(SINL, 3, "known non public virtual %ld\n",
inliner.get_info().non_pub_virtual);
TRACE(SINL, 3, "non public ctor %ld\n", inliner.get_info().non_pub_ctor);
TRACE(SINL, 3, "unknown field %ld\n", inliner.get_info().escaped_field);
TRACE(SINL, 3, "non public field %ld\n", inliner.get_info().non_pub_field);
TRACE(SINL, 3, "throws %ld\n", inliner.get_info().throws);
TRACE(SINL, 3, "array data %ld\n", inliner.get_info().array_data);
TRACE(SINL, 3, "multiple returns %ld\n", inliner.get_info().multi_ret);
TRACE(SINL, 3, "reference outside of primary %ld\n",
inliner.get_info().not_in_primary);
TRACE(SINL, 3, "not found %ld\n", inliner.get_info().not_found);
TRACE(SINL, 1,
"%ld inlined calls over %ld methods and %ld methods removed\n",
inliner.get_info().calls_inlined, inlined_count, deleted);
}
// Replace function calls with body
void Inliner::VisitCallExpr(CallExpr *node) {
FunctionDecl * calee_ptr = node->getDirectCallee();
if (!calee_ptr || !calee_ptr->hasBody()) {
return;
}
// Visit the body and prefix all DeclRefs and Labels
//string prefixed_body = PrefixFunc(fd);
// Replace returns with goto + assignment
// replace the prototype with locals and connect to the call arguments
//if (functions_.count(calee_ptr) == 0) {
Inliner inliner(rewriter_,source_manager_,contex_);
inliner.VisitFunctionDecl(calee_ptr);
//}
stringstream ss;
string calee_name = calee_ptr->getNameAsString();
// add a start label (just for readability)
ss << "{\n/*" << Defines::kLabelStart << calee_name << replacements_ << ":*/\n";
// put in the arguments, start with RetVal and Ret
string result_type = calee_ptr->getResultType().getAsString();
if (result_type != "void")
ss << result_type << " " << Defines::kRetVal << "_" << calee_name << replacements_ << ";\n";
ss << Defines::kGuardType << " " << Defines::kRetGuard << "_" << calee_name << replacements_ << " = 0;\n";
// use temporary variables to transfer arguments to avoid this:
// double foo(int x) { // foo body } main() { y = foo(x); }
// turning into this:
// main () {
// {
// int tmp_x = x;
// double retval;
// {
// int x = tmp_x;
// // foo body
// }
// y = retval;
// }
// }
stringstream temps, params;
for (size_t i = 0; i < calee_ptr->getNumParams() ; ++i) {
ParmVarDecl * param_ptr = calee_ptr->getParamDecl(i);
string decl = Utils::PrintDecl(param_ptr,contex_);
string name = param_ptr->getNameAsString();
string type = decl.substr(0,decl.find_last_of(name) - name.size() + 1);
temps << type << Defines::kTempPrefix << calee_name << "_" << name << replacements_<< " = " << Utils::PrintStmt(node->getArg(i),contex_) << ";\n";
params << decl << " = " << Defines::kTempPrefix << calee_name << "_" << name << replacements_ << ";\n";
}
ss << temps.str() << "{\n" << params.str();
// put in the inlined body
ss << inliner.body_;
ss << "\n}\n";
// add the end label (just for readability)
ss << "/*" << Defines::kLabelEnd << calee_name << replacements_ << ":*/\n";
// connect the return value
if (!return_vars_.empty()) {
ss << return_vars_.back() << " = " << Defines::kRetVal << "_" << calee_name << replacements_;
}
ss << ";\n";
ss << "}\n";
SourceLocation start = node->getSourceRange().getBegin();
Rewriter &rw = (current_func_->isMain()) ? main_rewriter_ : rewriter_;
rw.ReplaceText(start, Utils::GetStmtLength(node),ss.str());
}