-mllvm fla error fix

Question

-mllvm fla error fix

crazy-copy opened this issue a year ago · 2 comments

crazy-copy commented a year ago

DreamSoule commented a year ago

感谢

Answer 1 · 2023-12-02T04:59:45.000Z

对比了一下别处的源码发现有个小错误导致不能使用 fla 选项

PreservedAnalyses FlatteningPass::run(Function& F, FunctionAnalysisManager& AM) {
    Function *tmp = &F; // 传入的Function
    // 判断是否需要开启控制流平坦化
    if (toObfuscate(flag, tmp, "fla")) {

      // Lower switch
      LowerSwitchPass lower;
      lower.run(F, AM);
      #这里没有返回值导致的错误
      if (flatten(F)) {
        ++Flattened;
      }
      return PreservedAnalyses::none();
    }
    return PreservedAnalyses::all();
}
bool FlatteningPass::flatten(Function &F){
     ...
    fixStack(F);
    return true;  #这里添加返回值 就可以使用fla了

}