C++ Exceptions Codegen

//compile with g++ test.cpp -S -o - -masm=intel
//then remove the `noexcept` keyword in `int f() noexcept;` and compile again
//compare the two results

#include <cstdio>

int f() noexcept;

struct s1 {
    ~s1();
};

struct s2 {
    ~s2();
};

struct s3 {
    ~s3();
};

int g(){
    s2 s2;
    return f()*f();
}

int test(){
    try {
        s1 s1;

        auto a = g();

        s3 s3;

        return a*g();
    }catch(int &e){
        std::printf("e: %d\n",e);

        throw;
    }
}