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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 --- - Regression afer commit 179786 (InstCombiner::visitExtractElementInst() enhancement)"
href="http://llvm.org/bugs/show_bug.cgi?id=15818">15818</a>
</td>
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<tr>
<th>Summary</th>
<td>Regression afer commit 179786 (InstCombiner::visitExtractElementInst() enhancement)
</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>
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<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</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>babokin@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</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=10404" name="attach_10404" title="Reproducer">attachment 10404</a> <a href="attachment.cgi?id=10404&action=edit" title="Reproducer">[details]</a></span>
Reproducer
<span class="quote">> llvm-as instcombine_bug.ll
> opt -instcombine instcombine_bug.bc -disable-output</span >
Instruction does not dominate all uses!
%sub_b_load28_to_int32_ = add i32 %b_load28_to_int32, -2
%0 = extractelement <8 x float> %floatval.i.i, i32 %sub_b_load28_to_int32_
Broken module found, compilation aborted!
0 opt 0x00000000012219c2 llvm::sys::PrintStackTrace(_IO_FILE*) +
34
1 opt 0x0000000001221619
2 libpthread.so.0 0x00000037eb40efe0
3 libc.so.6 0x00000037eac35935 gsignal + 53
4 libc.so.6 0x00000037eac370e8 abort + 328
5 opt 0x00000000011d5e96
6 opt 0x00000000011deab2
7 opt 0x00000000011bcc7f
llvm::FPPassManager::runOnFunction(llvm::Function&) + 655
8 opt 0x00000000011bcccb
llvm::FPPassManager::runOnModule(llvm::Module&) + 43
9 opt 0x00000000011bc777
llvm::MPPassManager::runOnModule(llvm::Module&) + 663
10 opt 0x00000000011bc937 llvm::PassManagerImpl::run(llvm::Module&)
+ 231
11 opt 0x00000000005762b4 main + 3716
12 libc.so.6 0x00000037eac21735 __libc_start_main + 245
13 opt 0x0000000000586ca5
Stack dump:
0. Program arguments: opt -instcombine instcombine_bug.bc -disable-output
1. Running pass 'Function Pass Manager' on module 'instcombine_bug.bc'.
2. Running pass 'Module Verifier' on function
'@f_fu___un_3C_unf_3E_un_3C_unf_3E_unf'
Aborted (core dumped)</pre>
</div>
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