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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 - [LoopVectorize] Assertion `isa<PHINode>(UI) && "Expected LCSSA form"' failed."
href="https://bugs.llvm.org/show_bug.cgi?id=47390">47390</a>
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<th>Summary</th>
<td>[LoopVectorize] Assertion `isa<PHINode>(UI) && "Expected LCSSA form"' 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>
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<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Loop Optimizer
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>chenmindong120@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
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<pre>Created <span class=""><a href="attachment.cgi?id=23917" name="attach_23917" title="reproducer">attachment 23917</a> <a href="attachment.cgi?id=23917&action=edit" title="reproducer">[details]</a></span>
reproducer
clang-10:
/home/chenmindong/dev/llvm-project/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:3410:
void llvm::InnerLoopVectorizer::fixupIVUsers(llvm::PHINode*, const
llvm::InductionDescriptor&, llvm::Value*, llvm::Value*, llvm::BasicBlock*):
Assertion `isa<PHINode>(UI) && "Expected LCSSA form"' failed.
Stack dump:
0. Program arguments:
/home/chenmindong/dev/llvm-project/install/bin/clang-10 -cc1 -triple
aarch64-unknown-linux-gnu -emit-obj -disable-free -main-file-name reproducer.c
-mrelocation-model static -mthread-model posix -mllvm -pass-remarks= -mllvm
-pass-remarks-missed= -mllvm -pass-remarks-analysis= -mframe-pointer=non-leaf
-fmath-errno -ffp-contract=fast -fno-rounding-math -masm-verbose
-mconstructor-aliases -target-cpu generic -target-feature +neon -target-abi
aapcs -fallow-half-arguments-and-returns -dwarf-column-info
-fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir
/home/chenmindong/dev/llvm-project/install/lib/clang/10.0.0 -internal-isystem
/usr/local/include -internal-isystem
/home/chenmindong/dev/llvm-project/install/lib/clang/10.0.0/include
-internal-externc-isystem /include -internal-externc-isystem /usr/include -Os
-w -fdebug-compilation-dir /home/chenmindong/workspace/DTS/701 -ferror-limit 19
-fmessage-length 0 -fno-signed-char -fgnuc-version=4.2.1 -fobjc-runtime=gcc
-fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-slp
-faddrsig -o /tmp/reproducer-d275c0.o -x c reproducer.c
1. <eof> parser at end of file
2. Per-module optimization passes
3. Running pass 'Function Pass Manager' on module 'reproducer.c'.
4. Running pass 'Loop Vectorization' on function '@b'</pre>
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