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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - partial-inliner pass crashes with "opt -mem2reg -loop-rotate -loop-unswitch -jump-threading -partial-inliner": Assertion `OutlinedFunctionCost >= Cloner.OutlinedRegionCost && "Outlined function cost should be no less than the outlined region"' failed."
href="https://bugs.llvm.org/show_bug.cgi?id=42268">42268</a>
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<tr>
<th>Summary</th>
<td>partial-inliner pass crashes with "opt -mem2reg -loop-rotate -loop-unswitch -jump-threading -partial-inliner": Assertion `OutlinedFunctionCost >= Cloner.OutlinedRegionCost && "Outlined function cost should be no less than the outlined region"' 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=22091" name="attach_22091" title=".bc file of the source code">attachment 22091</a> <a href="attachment.cgi?id=22091&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 -mem2reg -loop-rotate -loop-unswitch -jump-threading -partial-inliner
small.bc -o small-opt.bc
opt:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/lib/Transforms/IPO/PartialInlining.cpp:905:
std::tuple<int, int>
{anonymous}::PartialInlinerImpl::computeOutliningCosts({anonymous}::PartialInlinerImpl::FunctionCloner&):
Assertion `OutlinedFunctionCost >= Cloner.OutlinedRegionCost && "Outlined
function cost should be no less than the outlined region"' failed.
Stack dump:
0. Program arguments:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt -mem2reg
-loop-rotate -loop-unswitch -jump-threading -partial-inliner small.bc -o
small-opt.bc
1. Running pass 'Partial Inliner' on module 'small.bc'.
#0 0x0000563ec72a3cea llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x255bcea)
#1 0x0000563ec72a19a4 llvm::sys::RunSignalHandlers()
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x25599a4)
#2 0x0000563ec72a1ae2 SignalHandler(int)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x2559ae2)
#3 0x00007fb62a2c4890 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x12890)
#4 0x00007fb628f76e97 raise
/build/glibc-OTsEL5/glibc-2.27/signal/../sysdeps/unix/sysv/linux/raise.c:51:0
#5 0x00007fb628f78801 abort /build/glibc-OTsEL5/glibc-2.27/stdlib/abort.c:81:0
#6 0x00007fb628f6839a __assert_fail_base
/build/glibc-OTsEL5/glibc-2.27/assert/assert.c:89:0
#7 0x00007fb628f68412 (/lib/x86_64-linux-gnu/libc.so.6+0x30412)
#8 0x0000563ec6d7d4f5 (anonymous
namespace)::PartialInlinerImpl::tryPartialInline((anonymous
namespace)::PartialInlinerImpl::FunctionCloner&) (.part.567)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x20354f5)
#9 0x0000563ec6d7ffd6 (anonymous
namespace)::PartialInlinerImpl::run(llvm::Module&) (.part.583)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x2037fd6)
#10 0x0000563ec6d808b5 (anonymous
namespace)::PartialInlinerLegacyPass::runOnModule(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x20388b5)
#11 0x0000563ec6c601c1 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x1f181c1)
#12 0x0000563ec555a889 main
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x812889)
#13 0x00007fb628f59b97 __libc_start_main
/build/glibc-OTsEL5/glibc-2.27/csu/../csu/libc-start.c:344:0
#14 0x0000563ec55deaba _start
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build/bin/opt+0x896aba)
Aborted (core dumped)
---------------------------------
char a;
void b() {
int c = 8;
for (; a;)
if (c)
;
}
void d() { b(); }</pre>
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