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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - endless loop in DAGCombiner when compiling Firefox"
href="https://bugs.llvm.org/show_bug.cgi?id=32579">32579</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>endless loop in DAGCombiner when compiling Firefox
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>octoploid@yandex.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>% clang++ -c -O3 -std=gnu++11 -w -fPIC -fno-strict-aliasing -ffunction-sections
-fdata-sections -fno-exceptions -fno-strict-aliasing -fno-rtti -fno-exceptions
nsContentUtils.ii
perf shows:
Overhead Shared Object Symbol
31.90% libLLVMSupport.so.5.0.0svn [.]
llvm::SmallPtrSetImplBase::FindBucketFor
25.40% libLLVMSelectionDAG.so.5.0.0svn [.] (anonymous
namespace)::DAGCombiner::MergeConsecutiveStores
18.80% libLLVMSupport.so.5.0.0svn [.]
llvm::SmallPtrSetImplBase::insert_imp_big
4.85% libLLVMSupport.so.5.0.0svn [.]
llvm::SmallPtrSetImplBase::Grow</pre>
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</p>
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