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<head>
<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - indvars crashes: Assertion `L->isRecursivelyLCSSAForm(*DT, *LI) && "LCSSA required to run indvars!"' failed."
href="https://bugs.llvm.org/show_bug.cgi?id=43533">43533</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>indvars crashes: Assertion `L->isRecursivelyLCSSAForm(*DT, *LI) && "LCSSA required to run indvars!"' 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=22616" name="attach_22616" title="office_ispell.bc">attachment 22616</a> <a href="attachment.cgi?id=22616&action=edit" title="office_ispell.bc">[details]</a></span>
office_ispell.bc
$clang -v
clang version 10.0.0 (trunk 373303)
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
$opt -loop-rotate -instcombine -sroa -jump-threading -loop-unroll-and-jam
-early-cse-memssa -nary-reassociate -indvars office_ispell.bc
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/Transforms/Scalar/IndVarSimplify.cpp:2758:
bool {anonymous}::IndVarSimplify::run(llvm::Loop*): Assertion
`L->isRecursivelyLCSSAForm(*DT, *LI) && "LCSSA required to run indvars!"'
failed.
Stack dump:
0. Program arguments:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt -loop-rotate
-instcombine -sroa -jump-threading -loop-unroll-and-jam -early-cse-memssa
-nary-reassociate -indvars office_ispell.bc
1. Running pass 'Function Pass Manager' on module 'office_ispell.bc'.
2. Running pass 'Loop Pass Manager' on function '@main'
3. Running pass 'Induction Variable Simplification' on basic block
'%while.cond'
#0 0x00005575ce7a155a llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x278655a)
#1 0x00005575ce79f234 llvm::sys::RunSignalHandlers()
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x2784234)
#2 0x00005575ce79f372 SignalHandler(int)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x2784372)
#3 0x00007f5c5428c890 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x12890)
#4 0x00007f5c52f3ee97 raise
/build/glibc-OTsEL5/glibc-2.27/signal/../sysdeps/unix/sysv/linux/raise.c:51:0
#5 0x00007f5c52f40801 abort /build/glibc-OTsEL5/glibc-2.27/stdlib/abort.c:81:0
#6 0x00007f5c52f3039a __assert_fail_base
/build/glibc-OTsEL5/glibc-2.27/assert/assert.c:89:0
#7 0x00007f5c52f30412 (/lib/x86_64-linux-gnu/libc.so.6+0x30412)
#8 0x00005575ce5422c9 (anonymous
namespace)::IndVarSimplifyLegacyPass::runOnLoop(llvm::Loop*,
llvm::LPPassManager&) (.part.477)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x25272c9)
#9 0x00005575cda6e33b llvm::LPPassManager::runOnFunction(llvm::Function&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x1a5333b)
#10 0x00005575ce0dd309 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x20c2309)
#11 0x00005575ce0dd3d9 llvm::FPPassManager::runOnModule(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x20c23d9)
#12 0x00005575ce0dc561 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x20c1561)
#13 0x00005575cc8afdbf main
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x894dbf)
#14 0x00007f5c52f21b97 __libc_start_main
/build/glibc-OTsEL5/glibc-2.27/csu/../csu/libc-start.c:344:0
#15 0x00005575cc927f4a _start
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x90cf4a)
Aborted (core dumped)
The optimization sequence can be reduced to "-nary-reassociate -indvars" using
bugpoint.
$opt bugpoint-reduced-simplified.bc -nary-reassociate -indvars
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/Transforms/Scalar/IndVarSimplify.cpp:2758:
bool {anonymous}::IndVarSimplify::run(llvm::Loop*): Assertion
`L->isRecursivelyLCSSAForm(*DT, *LI) && "LCSSA required to run indvars!"'
failed.
Stack dump:
0. Program arguments:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt
bugpoint-reduced-simplified.bc -nary-reassociate -indvars
1. Running pass 'Function Pass Manager' on module
'bugpoint-reduced-simplified.bc'.
2. Running pass 'Loop Pass Manager' on function '@main'
3. Running pass 'Induction Variable Simplification' on basic block
'%while.cond'
#0 0x000055ada21fd55a llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x278655a)
#1 0x000055ada21fb234 llvm::sys::RunSignalHandlers()
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x2784234)
#2 0x000055ada21fb372 SignalHandler(int)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x2784372)
#3 0x00007ff696918890 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x12890)
#4 0x00007ff6955cae97 raise
/build/glibc-OTsEL5/glibc-2.27/signal/../sysdeps/unix/sysv/linux/raise.c:51:0
#5 0x00007ff6955cc801 abort /build/glibc-OTsEL5/glibc-2.27/stdlib/abort.c:81:0
#6 0x00007ff6955bc39a __assert_fail_base
/build/glibc-OTsEL5/glibc-2.27/assert/assert.c:89:0
#7 0x00007ff6955bc412 (/lib/x86_64-linux-gnu/libc.so.6+0x30412)
#8 0x000055ada1f9e2c9 (anonymous
namespace)::IndVarSimplifyLegacyPass::runOnLoop(llvm::Loop*,
llvm::LPPassManager&) (.part.477)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x25272c9)
#9 0x000055ada14ca33b llvm::LPPassManager::runOnFunction(llvm::Function&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x1a5333b)
#10 0x000055ada1b39309 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x20c2309)
#11 0x000055ada1b393d9 llvm::FPPassManager::runOnModule(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x20c23d9)
#12 0x000055ada1b38561 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x20c1561)
#13 0x000055ada030bdbf main
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x894dbf)
#14 0x00007ff6955adb97 __libc_start_main
/build/glibc-OTsEL5/glibc-2.27/csu/../csu/libc-start.c:344:0
#15 0x000055ada0383f4a _start
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build10/bin/opt+0x90cf4a)
Aborted (core dumped)</pre>
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