<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 - licm crashes: Assertion `dominates(MP, U) && "Memory PHI does not dominate it's uses"' failed."
href="https://bugs.llvm.org/show_bug.cgi?id=43427">43427</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>licm crashes: Assertion `dominates(MP, U) && "Memory PHI does not dominate it's uses"' 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>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=22560" name="attach_22560" title=".bc file of the source code">attachment 22560</a> <a href="attachment.cgi?id=22560&action=edit" title=".bc file of the source code">[details]</a></span>
.bc file of the source code
$clang -v
clang version 10.0.0 (trunk 372364)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/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/7.4.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.4.0
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
$opt -sroa -simplifycfg -jump-threading -instcombine -indvars -instcombine
-licm small.bc -o small-opt.bc
opt:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/lib/Analysis/MemorySSA.cpp:2032:
void llvm::MemorySSA::verifyDomination(llvm::Function&) const: Assertion
`dominates(MP, U) && "Memory PHI does not dominate it's uses"' failed.
Stack dump:
0. Program arguments:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt -sroa
-simplifycfg -jump-threading -instcombine -indvars -instcombine -licm small.bc
-o small-opt.bc
1. Running pass 'Function Pass Manager' on module 'small.bc'.
2. Running pass 'Loop Pass Manager' on function '@h'
#0 0x0000562e44df2dca llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x277adca)
#1 0x0000562e44df0aa4 llvm::sys::RunSignalHandlers()
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x2778aa4)
#2 0x0000562e44df0be2 SignalHandler(int)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x2778be2)
#3 0x00007fd9e226c890 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x12890)
#4 0x00007fd9e0f1ee97 raise
/build/glibc-OTsEL5/glibc-2.27/signal/../sysdeps/unix/sysv/linux/raise.c:51:0
#5 0x00007fd9e0f20801 abort /build/glibc-OTsEL5/glibc-2.27/stdlib/abort.c:81:0
#6 0x00007fd9e0f1039a __assert_fail_base
/build/glibc-OTsEL5/glibc-2.27/assert/assert.c:89:0
#7 0x00007fd9e0f10412 (/lib/x86_64-linux-gnu/libc.so.6+0x30412)
#8 0x0000562e440eec74 llvm::MemorySSA::verifyDomination(llvm::Function&) const
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x1a76c74)
#9 0x0000562e440eecd9 llvm::MemorySSA::verifyMemorySSA() const
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x1a76cd9)
#10 0x0000562e4472dbf9
llvm::PMDataManager::verifyPreservedAnalysis(llvm::Pass*)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x20b5bf9)
#11 0x0000562e440c5119 llvm::LPPassManager::runOnFunction(llvm::Function&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x1a4d119)
#12 0x0000562e447322e9 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x20ba2e9)
#13 0x0000562e447323e1 llvm::FPPassManager::runOnModule(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x20ba3e1)
#14 0x0000562e44731541 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x20b9541)
#15 0x0000562e42f05aef main
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x88daef)
#16 0x00007fd9e0f01b97 __libc_start_main
/build/glibc-OTsEL5/glibc-2.27/csu/../csu/libc-start.c:344:0
#17 0x0000562e42f7d7ca _start
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x9057ca)
Aborted (core dumped)
The optimization sequence can be reduced to "-licm" using bugpoint.
opt bugpoint-reduced-simplified.bc -licm
WARNING: You're attempting to print out a bitcode file.
This is inadvisable as it may cause display problems. If
you REALLY want to taste LLVM bitcode first-hand, you
can force output with the `-f' option.
opt:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/lib/Analysis/MemorySSA.cpp:2032:
void llvm::MemorySSA::verifyDomination(llvm::Function&) const: Assertion
`dominates(MP, U) && "Memory PHI does not dominate it's uses"' failed.
Stack dump:
0. Program arguments:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt
bugpoint-reduced-simplified.bc -licm
1. Running pass 'Function Pass Manager' on module
'bugpoint-reduced-simplified.bc'.
2. Running pass 'Loop Pass Manager' on function '@h'
#0 0x0000564b3a6e8dca llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x277adca)
#1 0x0000564b3a6e6aa4 llvm::sys::RunSignalHandlers()
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x2778aa4)
#2 0x0000564b3a6e6be2 SignalHandler(int)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x2778be2)
#3 0x00007f5601c06890 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x12890)
#4 0x00007f56008b8e97 raise
/build/glibc-OTsEL5/glibc-2.27/signal/../sysdeps/unix/sysv/linux/raise.c:51:0
#5 0x00007f56008ba801 abort /build/glibc-OTsEL5/glibc-2.27/stdlib/abort.c:81:0
#6 0x00007f56008aa39a __assert_fail_base
/build/glibc-OTsEL5/glibc-2.27/assert/assert.c:89:0
#7 0x00007f56008aa412 (/lib/x86_64-linux-gnu/libc.so.6+0x30412)
#8 0x0000564b399e4c74 llvm::MemorySSA::verifyDomination(llvm::Function&) const
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x1a76c74)
#9 0x0000564b399e4cd9 llvm::MemorySSA::verifyMemorySSA() const
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x1a76cd9)
#10 0x0000564b3a023bf9
llvm::PMDataManager::verifyPreservedAnalysis(llvm::Pass*)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x20b5bf9)
#11 0x0000564b399bb119 llvm::LPPassManager::runOnFunction(llvm::Function&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x1a4d119)
#12 0x0000564b3a0282e9 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x20ba2e9)
#13 0x0000564b3a0283e1 llvm::FPPassManager::runOnModule(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x20ba3e1)
#14 0x0000564b3a027541 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x20b9541)
#15 0x0000564b387fbaef main
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x88daef)
#16 0x00007f560089bb97 __libc_start_main
/build/glibc-OTsEL5/glibc-2.27/csu/../csu/libc-start.c:344:0
#17 0x0000564b388737ca _start
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x9057ca)
Aborted (core dumped)
---------------------------------------
int a;
char b, c, d, f;
short e;
short(g)();
static long h() {
int i, j;
{
long k;
{
int l = 6;
if (g()) {
int *m[][8] = {{&j}, &i, 0, 0, &a};
for (; l;)
return 0;
for (; c;)
for (; b;)
;
} else
for (; e;)
return 0;
d = 11;
for (; d <= 1; --d)
;
}
}
return f;
}</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>