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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 --- - AVX issues / 'X86 DAG->DAG Instruction Selection' / core dumped"
href="http://llvm.org/bugs/show_bug.cgi?id=16324">16324</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>AVX issues / 'X86 DAG->DAG Instruction Selection' / core dumped
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>FreeBSD
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>release blocker
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Backend: X86
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>namor_t140101@hemio.de
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre># issue, same with llvm 3.2 and 3.4 (shown below)
[bulldozer] ~/np/proj/largewords> llc largewords.ll
Stack dump:
0. Program arguments: llc largewords.ll
1. Running pass 'Function Pass Manager' on module 'largewords.ll'.
2. Running pass 'X86 DAG->DAG Instruction Selection' on function '@main'
Bus error (core dumped)
# source file to reproduce:
[bulldozer] ~/np/proj/largewords> cat largewords.ll
define i32 @main(i32 %argc, i8** %argv)
{
%1 = zext i32 %argc to i256
%2 = mul i256 123987129387892374987129837, %1
%3 = add i256 5444517870735015415413993718908291383296, %2
%4 = trunc i256 %3 to i32
ret i32 %4
}
# rest is system information, attached is a the core file
[bulldozer] ~/np/proj/largewords> uname -a
FreeBSD bulldozer.local 9.1-RELEASE-p3 FreeBSD 9.1-RELEASE-p3 #0: Mon Apr 29
18:27:25 UTC 2013
<a href="mailto:root@amd64-builder.daemonology.net">root@amd64-builder.daemonology.net</a>:/usr/obj/usr/src/sys/GENERIC amd64
[bulldozer] ~/np/proj/largewords> llc --version
LLVM (<a href="http://llvm.org/">http://llvm.org/</a>):
LLVM version 3.4svn
Optimized build.
Built Jun 1 2013 (09:33:05).
Default target: amd64-portbld-freebsd9.1
Host CPU: bdver1
Registered Targets:
aarch64 - AArch64
arm - ARM
cpp - C++ backend
hexagon - Hexagon
mblaze - MBlaze
mips - Mips
mips64 - Mips64 [experimental]
mips64el - Mips64el [experimental]
mipsel - Mipsel
msp430 - MSP430 [experimental]
nvptx - NVIDIA PTX 32-bit
nvptx64 - NVIDIA PTX 64-bit
ppc32 - PowerPC 32
ppc64 - PowerPC 64
sparc - Sparc
sparcv9 - Sparc V9
systemz - SystemZ
thumb - Thumb
x86 - 32-bit X86: Pentium-Pro and above
x86-64 - 64-bit X86: EM64T and AMD64
xcore - XCore</pre>
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