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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Is OpenCL indexing supposed to work on a 'hi'/'lo' vector components?"
href="http://llvm.org/bugs/show_bug.cgi?id=20697">20697</a>
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<th>Summary</th>
<td>Is OpenCL indexing supposed to work on a 'hi'/'lo' vector components?
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>Macintosh
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Frontend
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>fjahanian@apple.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Currently, clang asserts in IRGen on the following code (and if assert is off
it
produces unexpected result).
#include <stdio.h>
int main()
{
typedef __attribute__ ((ext_vector_type( 4),__aligned__( 32))) double
double4;
double4 va;
va.lo[0] = 1.0;
va.lo[1] = 2.0;
va.hi[0] = 3.0;
va.hi[1] = 4.0;
printf("%g, %g, %g, %g\n", va[0], va[1], va[2], va[3]);
return 0;
}
// Answer expected to be: 1,2,3,4 instead of 3, 4, 0, 0
Is this expected to work. Documentation is unclear. It does work on the
vector itself:
va[0] = 1.0;</pre>
</div>
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