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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 - llvm.abs ignores prof metadata"
href="https://bugs.llvm.org/show_bug.cgi?id=48782">48782</a>
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<th>Summary</th>
<td>llvm.abs ignores prof metadata
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Scalar Optimizations
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>david.bolvansky@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>LLVM seems to ignore prof metadata for llvm.abs.
int abs(int v) {
return __builtin_expect(v > 0, 1) ? v : -v;
}
LLVM trunk -O3
abs: # @abs
mov eax, edi
neg eax
cmovl eax, edi
ret
LLVM 11 -O3
abs: # @abs
mov eax, edi
test edi, edi
js .LBB0_1
ret
.LBB0_1:
neg eax
ret
<a href="https://godbolt.org/z/KfzbKd">https://godbolt.org/z/KfzbKd</a>
p.s: same issue for smin/smax/umin/umax?</pre>
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