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<base href="http://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Clang hangs with -backend-option -vectorize-loops"
href="http://llvm.org/bugs/show_bug.cgi?id=15871">15871</a>
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<th>Summary</th>
<td>Clang hangs with -backend-option -vectorize-loops
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<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>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>choller@mozilla.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu, rafael.espindola@gmail.com
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>I've hit this when building mozilla-central and reduced the original C file
from 30k lines down to this small (but nonsense) example:
enum __rlimit_resource {
RUSAGE_SELF = 0
};
struct event {
struct event_base *ev_base;
};
int min_heap_elem_greater(
//struct event *a,
struct event *b
) {}
struct eventop {
X(event_io_map, event_map_entry);
struct event_base {
const struct eventop *evsel;
};
};
When compiling this with the following command line:
llvm/build/bin/clang-3.3 -cc1 -emit-obj -backend-option -vectorize-loops test.c
my clang hangs and seems to infinitely loop. Removing the backend-option
vectorize-loops seems to resolve the problem. Tested on LLVM r180778.</pre>
</div>
</p>
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