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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Use xor esi, esi instead of mov esi, 0"
href="https://bugs.llvm.org/show_bug.cgi?id=47024">47024</a>
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<th>Summary</th>
<td>Use xor esi, esi instead of mov esi, 0
</td>
</tr>
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<th>Product</th>
<td>libraries
</td>
</tr>
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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
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Backend: X86
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
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<th>Reporter</th>
<td>david.bolvansky@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>craig.topper@gmail.com, llvm-bugs@lists.llvm.org, llvm-dev@redking.me.uk, spatel+llvm@rotateright.com
</td>
</tr></table>
<p>
<div>
<pre>struct data_t {
char data[16];
};
void process3(data_t, data_t, data_t);
void test() {
process3({1, 2, 3, 4, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{11, 12, 13, 14, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10},
{21, 22, 23, 24, 25, 20, 20, 20, 10, 20, 20, 20, 20, 20, 20, 11});
}
test(): # @test()
movabs rdi, 21542142465
movabs rdx, 723401749922909195
movabs rcx, 723401728380766730
movabs r8, 1446803478303675925
movabs r9, 798285110420182026
mov esi, 0
jmp process3(data_t, data_t, data_t) # TAILCALL
<a href="https://godbolt.org/z/n1hbv8">https://godbolt.org/z/n1hbv8</a></pre>
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