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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - inlining and constant propagation to intrinsics"
href="https://llvm.org/bugs/show_bug.cgi?id=27177">27177</a>
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<th>Summary</th>
<td>inlining and constant propagation to intrinsics
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>3.8
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>-New Bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>mail@sven-woop.de
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=16148" name="attach_16148" title="reproducer">attachment 16148</a> <a href="attachment.cgi?id=16148&action=edit" title="reproducer">[details]</a></span>
reproducer
I just ran into an issue where constants are not properly propagated to an
intrinsic which requires a constant argument. Compilation fails with an
appropiate error. Here a simple reproducer:
#include <immintrin.h>
inline __attribute__((always_inline)) void bla(__m128 a, __m128 b, const int x)
{
_mm_blend_ps(a, b, x);
}
int main()
{
__m128 a = _mm_set1_ps(1.0f);
__m128 b = _mm_set1_ps(2.0f);
const int x = 4;
bla(a,b,x);
}
Looks like the inlining happens too late.</pre>
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