<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/131440>131440</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            code deduplication in case of throw
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          fekir
      </td>
    </tr>
</table>

<pre>
    Consider following snippet

~~~~
struct myclass{
    myclass(int i);
};

#ifdef THROWIT
[[noreturn]] __attribute__((noinline)) void throwit(int i){
    throw myclass(i);
}
#define THROW(p) throwit(p);
#else
#define THROW(p) throw myclass(p);
#endif


void foo(){
    THROW(41);
}


void bar(int j){
    THROW(j);
}
~~~~


https://godbolt.org/z/oeqoqqhh1

When writing `throw` directly, "a lot" of code is generated in the body of `bar` and `foo` which is identical, which in turn generates a bigger binary.

When wrapping the `throw` in a non-`inline` function, this duplication does not happen, and since throwing is not cheap (`__cxa_allocate_exception` allocates), the cost of having a non-inline function should be negligible.

Does clang have any option (or chance) for avoiding to wrap all "throw" in functions to reduce the size of the binary?
</pre>
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