<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 - loop-extract pass crashes with Assertion `!LocalChanged && "A pass trigged a code update but the update status is lost"' failed."
href="https://bugs.llvm.org/show_bug.cgi?id=48065">48065</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>loop-extract pass crashes with Assertion `!LocalChanged && "A pass trigged a code update but the update status is lost"' failed.
</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>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>Loop Optimizer
</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=24129" name="attach_24129" title="small.bc">attachment 24129</a> <a href="attachment.cgi?id=24129&action=edit" title="small.bc">[details]</a></span>
small.bc
$clang -v
clang version 12.0.0 (<a href="https://github.com/llvm/llvm-project.git">https://github.com/llvm/llvm-project.git</a>
ba10c514c9712b99197935a82f0df8d285752bdf)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/jack-zhou/Documents/llvm/llvm_truck/llvm-project/build/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/7.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.5.0
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
$clang -O3 -c -emit-llvm -femit-all-decls -mllvm -disable-llvm-optzns small.c
-o small.bc
$opt -sroa -structurizecfg -jump-threading -loop-extract small.bc -o
small-opt.bc
opt:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm-project/llvm/include/llvm/PassAnalysisSupport.h:276:
AnalysisType& llvm::Pass::getAnalysisID(llvm::AnalysisID, llvm::Function&,
bool*) [with AnalysisType = llvm::DominatorTreeWrapperPass; llvm::AnalysisID =
const void*]: Assertion `!LocalChanged && "A pass trigged a code update but the
update status is lost"' failed.
PLEASE submit a bug report to <a href="https://bugs.llvm.org/">https://bugs.llvm.org/</a> and include the crash
backtrace.
Stack dump:
0. Program arguments:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm-project/build/bin/opt -sroa
-structurizecfg -jump-threading -loop-extract small.bc -o small-opt.bc
1. Running pass 'Extract loops into new functions' on module 'small.bc'.
#0 0x00005579dfa6c8ec llvm::sys::PrintStackTrace(llvm::raw_ostream&, int)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm-project/build/bin/opt+0x2c1a8ec)
#1 0x00005579dfa6a5c4 llvm::sys::RunSignalHandlers()
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm-project/build/bin/opt+0x2c185c4)
#2 0x00005579dfa6a733 SignalHandler(int)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm-project/build/bin/opt+0x2c18733)
#3 0x00007fd17ebd98a0 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x128a0)
#4 0x00007fd17d88bf47 raise
/build/glibc-2ORdQG/glibc-2.27/signal/../sysdeps/unix/sysv/linux/raise.c:51:0
#5 0x00007fd17d88d8b1 abort /build/glibc-2ORdQG/glibc-2.27/stdlib/abort.c:81:0
#6 0x00007fd17d87d42a __assert_fail_base
/build/glibc-2ORdQG/glibc-2.27/assert/assert.c:89:0
#7 0x00007fd17d87d4a2 (/lib/x86_64-linux-gnu/libc.so.6+0x304a2)
#8 0x00005579df4005ee llvm::DominatorTree&
llvm::function_ref<llvm::DominatorTree&
(llvm::Function&)>::callback_fn<(anonymous
namespace)::LoopExtractorLegacyPass::runOnModule(llvm::Module&)::'lambda'(llvm::Function&)>(long,
llvm::Function&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm-project/build/bin/opt+0x25ae5ee)
#9 0x00005579df400c37 (anonymous
namespace)::LoopExtractor::runOnModule(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm-project/build/bin/opt+0x25aec37)
#10 0x00005579df400f6c (anonymous
namespace)::LoopExtractorLegacyPass::runOnModule(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm-project/build/bin/opt+0x25aef6c)
#11 0x00005579df28b636 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm-project/build/bin/opt+0x2439636)
#12 0x00005579dd6d9df4 main
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm-project/build/bin/opt+0x887df4)
#13 0x00007fd17d86eb97 __libc_start_main
/build/glibc-2ORdQG/glibc-2.27/csu/../csu/libc-start.c:344:0
#14 0x00005579dd78e43a _start
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm-project/build/bin/opt+0x93c43a)
Aborted (core dumped)
$ cat small.c
int a, c;
char b;
float d() {
short e = 1;
for (; b <= 3; b) {
char f;
int g, h, i;
if (c)
continue;
for (; e;)
return a;
}
}</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>