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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 - opt crashes with "opt -functionattrs -inline -early-cse -loop-deletion -sroa -ipsccp""
href="https://bugs.llvm.org/show_bug.cgi?id=40432">40432</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>opt crashes with "opt -functionattrs -inline -early-cse -loop-deletion -sroa -ipsccp"
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>6.0
</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>Scalar Optimizations
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>cszide@163.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=21373" name="attach_21373" title=".bc file of the source code">attachment 21373</a> <a href="attachment.cgi?id=21373&action=edit" title=".bc file of the source code">[details]</a></span>
.bc file of the source code
$ clang -v
clang version 6.0.0 (tags/RELEASE_600/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir:
/home/jack-zhou/clang+llvm-6.0.0-x86_64-linux-gnu-ubuntu-16.04/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.3.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.3.0
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
$ opt -version
LLVM (<a href="http://llvm.org/">http://llvm.org/</a>):
LLVM version 6.0.0
Optimized build.
Default target: x86_64-unknown-linux-gnu
Host CPU: skylake
$clang -O3 -c -emit-llvm -mllvm -disable-llvm-optzns small.c -o small.bc
-I'path of csmith's runtime'
$ opt -functionattrs -inline -early-cse -loop-deletion -sroa -ipsccp
small.bc -o small-opt.bc
LLVMSymbolizer: error reading file: No such file or directory
#0 0x0000000001a68794 (opt+0x1a68794)
#1 0x0000000001a68a76 (opt+0x1a68a76)
#2 0x00007ff5d2a74890 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x12890)
#3 0x0000000001974bdb (opt+0x1974bdb)
#4 0x0000000001972a83 (opt+0x1972a83)
#5 0x0000000001602858 (opt+0x1602858)
#6 0x000000000075b292 (opt+0x75b292)
#7 0x00007ff5d1947b97 __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x21b97)
#8 0x000000000074c1b9 (opt+0x74c1b9)
Stack dump:
0. Program arguments: opt -functionattrs -inline -early-cse -loop-deletion
-sroa -ipsccp small.bc -o small-opt.bc
1. Running pass 'Interprocedural Sparse Conditional Constant Propagation'
on module 'small.bc'.
Segmentation fault (core dumped)
The following is the source code of small.c, which is generated by csmith and
reduced by creduce.
#include "csmith.h"
j,
a,
e,
f,
g;
h;
static *b(*, uint64_t, uint8_t, r, int);
c() {
int32_t q;
if (b(k(), j, q, f, g))
h = safe_add_func_uint32_t_u_u;
}
*b(*d, uint64_t l, uint8_t m, r, n) {
uint32_t i;
o:
for (a = 0; a <= 3;)
for (; 3;)
;
for (; e;) {
int8_t p;
for (; 0;)
goto o;
i--;
}
}</pre>
</div>
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