<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/101328>101328</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Support choosing assembly dialect per snippet in clang
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang
      </td>
    </tr>

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

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

<pre>
    Currently the primary way to change x86 inline assembly dialect (intel vs AT&T) is `-masm=intel` & `-masm=att`. This is a global change, undesired if some `#include`d code assumes AT&T.

Using `.intel_syntax` breaks on passing operands, as those still get generated with a leading `%` (https://github.com/llvm/llvm-project/issues/24606; https://godbolt.org/z/1xbfYsWh1). But, even if that were fixed, `"m"` operands would still likely remain broken due to having a completely different syntax.

A complete solution would be the ability to choose assembly dialect per assembly block. https://reviews.llvm.org/D113707 mentioned a potential option of `#pragma clang asm_dialect push "att"` & `#pragma clang asm_dialect pop`, but as far as I can tell nothing like that ever landed.

Motivating use-case is using inline intel assembly in a project which, for valgrind builds, uses `<valgrind/valgrind.h>` which in turn assumes AT&T assembly.
</pre>
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