<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 - newgvn crashes with "opt -loop-rotate -constprop -gvn -ipsccp -early-cse -memoryssa -die -newgvn": Assertion `isa<Instruction>(V) && "This should not be used for MemoryAccesses"' failed."
href="https://bugs.llvm.org/show_bug.cgi?id=42246">42246</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>newgvn crashes with "opt -loop-rotate -constprop -gvn -ipsccp -early-cse -memoryssa -die -newgvn": Assertion `isa<Instruction>(V) && "This should not be used for MemoryAccesses"' 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=22085" name="attach_22085" title=".bc file of the source code">attachment 22085</a> <a href="attachment.cgi?id=22085&action=edit" title=".bc file of the source code">[details]</a></span>
.bc file of the source code
$clang -v
clang version 9.0.0 (trunk 362492)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/jack-zhou/Documents/llvm/llvm_truck/llvm2/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/7.4.0
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 -mllvm -disable-llvm-optzns small.c
$opt -loop-rotate -constprop -gvn -ipsccp -early-cse -memoryssa -die -newgvn
small.bc -o small-opt.bc
opt:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/lib/Transforms/Scalar/NewGVN.cpp:837:
unsigned int {anonymous}::NewGVN::InstrToDFSNum(const llvm::Value*) const:
Assertion `isa<Instruction>(V) && "This should not be used for MemoryAccesses"'
failed.
Stack dump:
0. Program arguments:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt -loop-rotate
-constprop -gvn -ipsccp -early-cse -memoryssa -die -newgvn small.bc -o
small-opt.bc
1. Running pass 'Function Pass Manager' on module 'small.bc'.
2. Running pass 'Global Value Numbering' on function '@h'
#0 0x000055be48eaccea llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x255bcea)
#1 0x000055be48eaa9a4 llvm::sys::RunSignalHandlers()
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x25599a4)
#2 0x000055be48eaaae2 SignalHandler(int)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x2559ae2)
#3 0x00007fb10d37b890 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x12890)
#4 0x00007fb10c02de97 raise
/build/glibc-OTsEL5/glibc-2.27/signal/../sysdeps/unix/sysv/linux/raise.c:51:0
#5 0x00007fb10c02f801 abort /build/glibc-OTsEL5/glibc-2.27/stdlib/abort.c:81:0
#6 0x00007fb10c01f39a __assert_fail_base
/build/glibc-OTsEL5/glibc-2.27/assert/assert.c:89:0
#7 0x00007fb10c01f412 (/lib/x86_64-linux-gnu/libc.so.6+0x30412)
#8 0x000055be4712a905 bool llvm::isa<llvm::ConstantInt,
llvm::Value*>(llvm::Value* const&) (.isra.691.part.692)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x7d9905)
#9 0x000055be48d370fe
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x23e60fe)
#10 0x000055be48d37289 (anonymous
namespace)::NewGVN::MemoryToDFSNum(llvm::Value const*) const
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x23e6289)
#11 0x000055be48d40a13 (anonymous
namespace)::NewGVN::markMemoryUsersTouched(llvm::MemoryAccess const*)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x23efa13)
#12 0x000055be48d47389 (anonymous
namespace)::NewGVN::performCongruenceFinding(llvm::Instruction*,
llvm::GVNExpression::Expression const*)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x23f6389)
#13 0x000055be48d5179d (anonymous
namespace)::NewGVN::iterateTouchedInstructions()
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x240079d)
#14 0x000055be48d53992 (anonymous namespace)::NewGVN::runGVN()
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x2402992)
#15 0x000055be48d5576f (anonymous
namespace)::NewGVNLegacyPass::runOnFunction(llvm::Function&) (.part.1399)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x240476f)
#16 0x000055be48869f69 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x1f18f69)
#17 0x000055be4886a061 llvm::FPPassManager::runOnModule(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x1f19061)
#18 0x000055be488691c1 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x1f181c1)
#19 0x000055be47163889 main
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x812889)
#20 0x00007fb10c010b97 __libc_start_main
/build/glibc-OTsEL5/glibc-2.27/csu/../csu/libc-start.c:344:0
#21 0x000055be471e7aba _start
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x896aba)
Aborted (core dumped)
-------------------------------------------
int a, b, c;
int(d)();
void e() { a >> 8 & 5 ^ (a ^ 0) & 5; }
static void g() {
for (; b; 0)
;
}
void h() {
short f;
d() & c;
}</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>