<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - wrong code in Polly on x86_64-linux-gnu with "opt -sroa -functionattrs -loop-rotate -licm -loop-unswitch -loop-unroll -jump-threading -polly-opt-isl -polly-codegen""
href="https://bugs.llvm.org/show_bug.cgi?id=34486">34486</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>wrong code in Polly on x86_64-linux-gnu with "opt -sroa -functionattrs -loop-rotate -licm -loop-unswitch -loop-unroll -jump-threading -polly-opt-isl -polly-codegen"
</td>
</tr>
<tr>
<th>Product</th>
<td>Polly
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</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>Optimizer
</td>
</tr>
<tr>
<th>Assignee</th>
<td>polly-dev@googlegroups.com
</td>
</tr>
<tr>
<th>Reporter</th>
<td>su@cs.ucdavis.edu
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>$ clangpolly -v
clang version 6.0.0 (<a href="http://llvm.org/git/clang.git">http://llvm.org/git/clang.git</a>
5a2b037a53684751a712b11898a0cc69815f2ba7) (<a href="http://llvm.org/git/llvm.git">http://llvm.org/git/llvm.git</a>
76db91a4f033defd405dfb4d14ba6c0c7e205ce0)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/su/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9.4
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5.3.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.4.7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.6.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7.3
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8.5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.3.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.2.0
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
$
$ clangpolly -w -O3 -mllvm -disable-llvm-optzns -c -emit-llvm -o small.bc
small.c
$ optpolly -sroa -functionattrs -loop-rotate -licm -loop-unswitch -loop-unroll
-jump-threading -polly-opt-isl -polly-codegen -o small-opt.bc small.bc
$ clangpolly small-opt.bc
$ ./a.out
0
$
$ clangpolly -O0 -w small.c; ./a.out
1
$
------------------------------------------------------
int printf (const char *, ...);
char fn1 (int e, int f) { return 0; }
int fn2 (int h) { return 0; }
int l, m, n, p, q, r[3][1], s, t, x, y, z, aa, ab;
unsigned o;
void fn3 ()
{
unsigned ad;
L:;
int af;
for (ad = 0; ad < 1; ad++)
{
int ag;
r[ad + 2][ad] || (fn1 (0, 5) && n);
m = r[1][0] = 15 > p;
if (!m)
{
if (q)
goto L;
y = fn1 (t, 0);
z = fn2 (y);
aa = fn1 (z, s);
ab = fn2 (t);
(af = fn1 (l, 2)) || (s = fn1 (ab, x) > 10);
}
}
for (; o < 4; o++)
af;
}
int main ()
{
fn3 ();
printf ("%d\n", m);
return 0;
}</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>