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<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 - [MergeICmps] triggers assert when creating memcpy"
href="https://bugs.llvm.org/show_bug.cgi?id=48661">48661</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[MergeICmps] triggers assert when creating memcpy
</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>v.churavy@gmail.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=24350" name="attach_24350" title="Bugpoint reproducer">attachment 24350</a> <a href="attachment.cgi?id=24350&action=edit" title="Bugpoint reproducer">[details]</a></span>
Bugpoint reproducer
Looks superficially similar to <a href="https://reviews.llvm.org/D92375">https://reviews.llvm.org/D92375</a>, but still
occurs tip-of-trunk.
opt: /home/vchuravy/src/llvm-project/llvm/lib/IR/Instructions.cpp:444: void
llvm::CallInst::init(llvm::FunctionType*, llvm::Value*,
llvm::ArrayRef<llvm::Value*>,
llvm::ArrayRef<llvm::OperandBundleDefT<llvm::Value*> >, const llvm::Twine&):
Assertion `(i >= FTy->getNumParams() || FTy->getParamType(i) ==
Args[i]->getType()) && "Calling a function with a bad signature!"' failed.
PLEASE submit a bug report to <a href="https://bugs.llvm.org/">https://bugs.llvm.org/</a> and include the crash
backtrace.
Stack dump:
0. Program arguments: bin/opt -mergeicmps -S mod.ll
1. Running pass 'Function Pass Manager' on module 'mod.ll'.
2. Running pass 'Merge contiguous icmps into a memcmp' on function
'@"julia_==_864"'
#0 0x000055cbc989ed94 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int)
/home/vchuravy/src/llvm-project/llvm/lib/Support/Unix/Signals.inc:563:22
#1 0x000055cbc989ee4b PrintStackTraceSignalHandler(void*)
/home/vchuravy/src/llvm-project/llvm/lib/Support/Unix/Signals.inc:630:1
#2 0x000055cbc989cb5b llvm::sys::RunSignalHandlers()
/home/vchuravy/src/llvm-project/llvm/lib/Support/Signals.cpp:71:20
#3 0x000055cbc989e724 SignalHandler(int)
/home/vchuravy/src/llvm-project/llvm/lib/Support/Unix/Signals.inc:405:1
#4 0x00007fe2e2dbb0f0 __restore_rt (/usr/lib/libpthread.so.0+0x140f0)
#5 0x00007fe2e2840615 raise (/usr/lib/libc.so.6+0x3d615)
#6 0x00007fe2e2829862 abort (/usr/lib/libc.so.6+0x26862)
#7 0x00007fe2e2829747 _nl_load_domain.cold (/usr/lib/libc.so.6+0x26747)
#8 0x00007fe2e2838bf6 (/usr/lib/libc.so.6+0x35bf6)
#9 0x000055cbc8d1c7da llvm::CallInst::init(llvm::FunctionType*, llvm::Value*,
llvm::ArrayRef<llvm::Value*>,
llvm::ArrayRef<llvm::OperandBundleDefT<llvm::Value*> >, llvm::Twine const&)
/home/vchuravy/src/llvm-project/llvm/lib/IR/Instructions.cpp:444:5
#10 0x000055cbc6a33996 llvm::CallInst::CallInst(llvm::FunctionType*,
llvm::Value*, llvm::ArrayRef<llvm::Value*>,
llvm::ArrayRef<llvm::OperandBundleDefT<llvm::Value*> >, llvm::Twine const&,
llvm::Instruction*)
/home/vchuravy/src/llvm-project/llvm/include/llvm/IR/Instructions.h:1716:7
#11 0x000055cbc6b61c21 llvm::CallInst::Create(llvm::FunctionType*,
llvm::Value*, llvm::ArrayRef<llvm::Value*>,
llvm::ArrayRef<llvm::OperandBundleDefT<llvm::Value*> >, llvm::Twine const&,
llvm::Instruction*)
/home/vchuravy/src/llvm-project/llvm/include/llvm/IR/Instructions.h:1514:64
#12 0x000055cbc6b6500b llvm::IRBuilderBase::CreateCall(llvm::FunctionType*,
llvm::Value*, llvm::ArrayRef<llvm::Value*>, llvm::Twine const&, llvm::MDNode*)
/home/vchuravy/src/llvm-project/llvm/include/llvm/IR/IRBuilder.h:2430:36
#13 0x000055cbc6b6510a llvm::IRBuilderBase::CreateCall(llvm::FunctionCallee,
llvm::ArrayRef<llvm::Value*>, llvm::Twine const&, llvm::MDNode*)
/home/vchuravy/src/llvm-project/llvm/include/llvm/IR/IRBuilder.h:2451:22
#14 0x000055cbc98dd5b1 emitLibCall(llvm::LibFunc, llvm::Type*,
llvm::ArrayRef<llvm::Type*>, llvm::ArrayRef<llvm::Value*>,
llvm::IRBuilderBase&, llvm::TargetLibraryInfo const*, bool)
/home/vchuravy/src/llvm-project/llvm/lib/Transforms/Utils/BuildLibCalls.cpp:1025:30
#15 0x000055cbc98de8e0 llvm::emitMemCmp(llvm::Value*, llvm::Value*,
llvm::Value*, llvm::IRBuilderBase&, llvm::DataLayout const&,
llvm::TargetLibraryInfo const*)
/home/vchuravy/src/llvm-project/llvm/lib/Transforms/Utils/BuildLibCalls.cpp:1135:21
#16 0x000055cbc962c7a5 (anonymous
namespace)::mergeComparisons(llvm::ArrayRef<(anonymous
namespace)::BCECmpBlock>, llvm::BasicBlock*, llvm::BasicBlock*, llvm::PHINode&,
llvm::TargetLibraryInfo const&, llvm::AAResults&, llvm::DomTreeUpdater&)
/home/vchuravy/src/llvm-project/llvm/lib/Transforms/Scalar/MergeICmps.cpp:654:41
#17 0x000055cbc962cb64 (anonymous
namespace)::BCECmpChain::simplify(llvm::TargetLibraryInfo const&,
llvm::AAResults&, llvm::DomTreeUpdater&)::'lambda0'(int, int,
llvm::BasicBlock*, llvm::BasicBlock*)::operator()(int, int, llvm::BasicBlock*,
llvm::BasicBlock*) const
/home/vchuravy/src/llvm-project/llvm/lib/Transforms/Scalar/MergeICmps.cpp:702:28
#18 0x000055cbc962cef2 (anonymous
namespace)::BCECmpChain::simplify(llvm::TargetLibraryInfo const&,
llvm::AAResults&, llvm::DomTreeUpdater&)
/home/vchuravy/src/llvm-project/llvm/lib/Transforms/Scalar/MergeICmps.cpp:721:28
#19 0x000055cbc962db42 (anonymous namespace)::processPhi(llvm::PHINode&,
llvm::TargetLibraryInfo const&, llvm::AAResults&, llvm::DomTreeUpdater&)
/home/vchuravy/src/llvm-project/llvm/lib/Transforms/Scalar/MergeICmps.cpp:861:27
#20 0x000055cbc962ddad (anonymous namespace)::runImpl(llvm::Function&,
llvm::TargetLibraryInfo const&, llvm::TargetTransformInfo const&,
llvm::AAResults&, llvm::DominatorTree*)
/home/vchuravy/src/llvm-project/llvm/lib/Transforms/Scalar/MergeICmps.cpp:886:18
#21 0x000055cbc962df21 (anonymous
namespace)::MergeICmpsLegacyPass::runOnFunction(llvm::Function&)
/home/vchuravy/src/llvm-project/llvm/lib/Transforms/Scalar/MergeICmps.cpp:908:73
#22 0x000055cbc8d619be llvm::FPPassManager::runOnFunction(llvm::Function&)
/home/vchuravy/src/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:1440:20
#23 0x000055cbc8d61c81 llvm::FPPassManager::runOnModule(llvm::Module&)
/home/vchuravy/src/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:1486:13
#24 0x000055cbc8d620e7 (anonymous
namespace)::MPPassManager::runOnModule(llvm::Module&)
/home/vchuravy/src/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:1555:20
#25 0x000055cbc8d5d20c llvm::legacy::PassManagerImpl::run(llvm::Module&)
/home/vchuravy/src/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:542:13
#26 0x000055cbc8d62995 llvm::legacy::PassManager::run(llvm::Module&)
/home/vchuravy/src/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:1683:1
#27 0x000055cbc67a24e5 main
/home/vchuravy/src/llvm-project/llvm/tools/opt/opt.cpp:1001:15
#28 0x00007fe2e282b152 __libc_start_main (/usr/lib/libc.so.6+0x28152)
#29 0x000055cbc676746e _start (bin/opt+0xcec46e)
fish: “bin/opt -mergeicmps -S mod.ll” terminated by signal SIGABRT (Abort)</pre>
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