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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Implement -march=x86-64-v2, -march=x86-64-v3, -march=x86-64-v4 for x86-64"
href="https://bugs.llvm.org/show_bug.cgi?id=47686">47686</a>
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<th>Summary</th>
<td>Implement -march=x86-64-v2, -march=x86-64-v3, -march=x86-64-v4 for x86-64
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<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Backend: X86
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>fweimer@redhat.com
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<th>CC</th>
<td>craig.topper@gmail.com, llvm-bugs@lists.llvm.org, llvm-dev@redking.me.uk, spatel+llvm@rotateright.com
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<pre>x86-64-v2, x86-64-v3, x86-64-v4 have been added to the psABI as new
micro-architecture levels:
<a href="https://gitlab.com/x86-psABIs/x86-64-ABI/-/commit/77566eb03bc6a326811cb7e9a6b9396884b67c7c">https://gitlab.com/x86-psABIs/x86-64-ABI/-/commit/77566eb03bc6a326811cb7e9a6b9396884b67c7c</a>
Clang should provide -march= options so that programmers can easily built
programs and shared objects that are optimized for these levels.
It would be nice to implement this at the LLVM level, so that multiple front
ends could use this functionality and achieve consistency (not just Clang).</pre>
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