| Issue |
139733
|
| Summary |
Assertion failure on x86_64-linux-gnu
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
KavyaChopra04
|
```
kchopra@ast-epyc5:~$ clang -v
clang version 21.0.0git (https://github.com/llvm/llvm-project.git da17ced11b1cf44b433cb2b850978df4b6bff279)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /local/home/kchopra/compilers/bin
Build config: +assertions
Found candidate GCC installation: /local/home/kchopra/compilers/bin/../lib/gcc/x86_64-pc-linux-gnu/15.0.1
Found candidate GCC installation: /local/home/kchopra/compilers/bin/../lib/gcc/x86_64-pc-linux-gnu/16.0.0
Selected GCC installation: /local/home/kchopra/compilers/bin/../lib/gcc/x86_64-pc-linux-gnu/16.0.0
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64
kchopra@ast-epyc5:~$ for i in $(seq 1 50); do echo "run $i"; clang -O3 -w clang_assertion_failure.c; done
run 1
.
.
run 38
clang-21: /local/home/kchopra/llvm-project/llvm/lib/IR/Instruction.cpp:337: bool llvm::Instruction::comesBefore(const llvm::Instruction*) const: Assertion `getParent() == Other->getParent() && "cross-BB instruction order comparison"' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments: /local/home/kchopra/compilers/bin/clang-21 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -dumpdir a- -disable-free -clear-ast-before-backend -main-file-name clang_assertion_failure.c -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/home/kchopra -fcoverage-compilation-dir=/home/kchopra -resource-dir /local/home/kchopra/compilers/lib/clang/21 -internal-isystem /local/home/kchopra/compilers/lib/clang/21/include -internal-isystem /usr/local/include -internal-isystem /local/home/kchopra/compilers/bin/../lib/gcc/x86_64-pc-linux-gnu/16.0.0/../../../../x86_64-pc-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O3 -w -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/clang_assertion_failure-d7dd6d.o -x c clang_assertion_failure.c
1. <eof> parser at end of file
2. Optimizer
3. Running pass "function<eager-inv>(float2int,lower-constant-intrinsics,chr,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;no-hoist-loads-stores-with-cond-faulting;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-verify-fixpoint>,loop-unroll<O3>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;hoist-loads-stores-with-cond-faulting;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)" on module "clang_assertion_failure.c"
4. Running pass "slp-vectorizer" on function "main"
#0 0x0000555684e75040 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/local/home/kchopra/compilers/bin/clang-21+0x45a6040)
#1 0x0000555684e7244f llvm::sys::RunSignalHandlers() (/local/home/kchopra/compilers/bin/clang-21+0x45a344f)
#2 0x0000555684e7259a SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#3 0x00007fb21456a520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007fb2145be9fc __pthread_kill_implementation ./nptl/pthread_kill.c:44:76
#5 0x00007fb2145be9fc __pthread_kill_internal ./nptl/pthread_kill.c:78:10
#6 0x00007fb2145be9fc pthread_kill ./nptl/pthread_kill.c:89:10
#7 0x00007fb21456a476 gsignal ./signal/../sysdeps/posix/raise.c:27:6
#8 0x00007fb2145507f3 abort ./stdlib/abort.c:81:7
#9 0x00007fb21455071b _nl_load_domain ./intl/loadmsgcat.c:1177:9
#10 0x00007fb214561e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#11 0x000055568474d6e0 llvm::Instruction::getInsertionPointAfterDef() (/local/home/kchopra/compilers/bin/clang-21+0x3e7e6e0)
#12 0x000055568693f462 llvm::slpvectorizer::BoUpSLP::getLastInstructionInBundle(llvm::slpvectorizer::BoUpSLP::TreeEntry const*) (/local/home/kchopra/compilers/bin/clang-21+0x6070462)
#13 0x000055568695801e llvm::slpvectorizer::BoUpSLP::isGatherShuffledSingleRegisterEntry(llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::ArrayRef<llvm::Value*>, llvm::MutableArrayRef<int>, llvm::SmallVectorImpl<llvm::slpvectorizer::BoUpSLP::TreeEntry const*>&, unsigned int, bool) (/local/home/kchopra/compilers/bin/clang-21+0x608901e)
#14 0x0000555686959944 llvm::slpvectorizer::BoUpSLP::isGatherShuffledEntry(llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::ArrayRef<llvm::Value*>, llvm::SmallVectorImpl<int>&, llvm::SmallVectorImpl<llvm::SmallVector<llvm::slpvectorizer::BoUpSLP::TreeEntry const*, 6u>>&, unsigned int, bool) (/local/home/kchopra/compilers/bin/clang-21+0x608a944)
#15 0x00005556869a6703 llvm::InstructionCost llvm::slpvectorizer::BoUpSLP::processBuildVector<llvm::slpvectorizer::BoUpSLP::ShuffleCostEstimator, llvm::InstructionCost, llvm::TargetTransformInfo, llvm::ArrayRef<llvm::Value*>, llvm::slpvectorizer::BoUpSLP, llvm::SmallPtrSetImpl<llvm::Value*>>(llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::Type*, llvm::TargetTransformInfo&, llvm::ArrayRef<llvm::Value*>&, llvm::slpvectorizer::BoUpSLP&, llvm::SmallPtrSetImpl<llvm::Value*>&) (/local/home/kchopra/compilers/bin/clang-21+0x60d7703)
#16 0x00005556869a9c8d llvm::slpvectorizer::BoUpSLP::getEntryCost(llvm::slpvectorizer::BoUpSLP::TreeEntry const*, llvm::ArrayRef<llvm::Value*>, llvm::SmallPtrSetImpl<llvm::Value*>&) (/local/home/kchopra/compilers/bin/clang-21+0x60dac8d)
#17 0x00005556869c20a0 llvm::slpvectorizer::BoUpSLP::getTreeCost(llvm::ArrayRef<llvm::Value*>, llvm::InstructionCost) (/local/home/kchopra/compilers/bin/clang-21+0x60f30a0)
#18 0x00005556869cbee0 llvm::SLPVectorizerPass::tryToVectorizeList(llvm::ArrayRef<llvm::Value*>, llvm::slpvectorizer::BoUpSLP&, bool) (/local/home/kchopra/compilers/bin/clang-21+0x60fcee0)
#19 0x00005556869d0f92 bool tryToVectorizeSequence<llvm::Value>(llvm::SmallVectorImpl<llvm::Value*>&, llvm::function_ref<bool (llvm::Value*, llvm::Value*)>, llvm::function_ref<bool (llvm::Value*, llvm::Value*)>, llvm::function_ref<bool (llvm::ArrayRef<llvm::Value*>, bool)>, bool, llvm::slpvectorizer::BoUpSLP&) (.constprop.0) SLPVectorizer.cpp:0:0
#20 0x00005556869d2934 llvm::SLPVectorizerPass::vectorizeChainsInBlock(llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&) (/local/home/kchopra/compilers/bin/clang-21+0x6103934)
#21 0x00005556869da8f6 llvm::SLPVectorizerPass::runImpl(llvm::Function&, llvm::ScalarEvolution*, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo*, llvm::AAResults*, llvm::LoopInfo*, llvm::DominatorTree*, llvm::AssumptionCache*, llvm::DemandedBits*, llvm::OptimizationRemarkEmitter*) (.part.0) SLPVectorizer.cpp:0:0
#22 0x00005556869db531 llvm::SLPVectorizerPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/home/kchopra/compilers/bin/clang-21+0x610c531)
#23 0x0000555686428bf6 llvm::detail::PassModel<llvm::Function, llvm::SLPVectorizerPass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/home/kchopra/compilers/bin/clang-21+0x5b59bf6)
#24 0x00005556847f120f llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/home/kchopra/compilers/bin/clang-21+0x3f2220f)
#25 0x0000555682027ca6 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/home/kchopra/compilers/bin/clang-21+0x1758ca6)
#26 0x00005556847ef583 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/home/kchopra/compilers/bin/clang-21+0x3f20583)
#27 0x00005556820254d6 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/home/kchopra/compilers/bin/clang-21+0x17564d6)
#28 0x00005556847f016d llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/home/kchopra/compilers/bin/clang-21+0x3f2116d)
#29 0x000055568511e331 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0
#30 0x00005556851227db clang::emitBackendOutput(clang::CompilerInstance&, clang::CodeGenOptions&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/local/home/kchopra/compilers/bin/clang-21+0x48537db)
#31 0x00005556857f9b34 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/local/home/kchopra/compilers/bin/clang-21+0x4f2ab34)
#32 0x00005556871e1c6c clang::ParseAST(clang::Sema&, bool, bool) (/local/home/kchopra/compilers/bin/clang-21+0x6912c6c)
#33 0x0000555685b12eb9 clang::FrontendAction::Execute() (/local/home/kchopra/compilers/bin/clang-21+0x5243eb9)
#34 0x0000555685a8ebb5 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/local/home/kchopra/compilers/bin/clang-21+0x51bfbb5)
#35 0x0000555685bfa5c8 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/local/home/kchopra/compilers/bin/clang-21+0x532b5c8)
#36 0x0000555681bbd107 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/local/home/kchopra/compilers/bin/clang-21+0x12ee107)
#37 0x0000555681bb341a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#38 0x0000555681bb7ae0 clang_main(int, char**, llvm::ToolContext const&) (/local/home/kchopra/compilers/bin/clang-21+0x12e8ae0)
#39 0x0000555681a5468b main (/local/home/kchopra/compilers/bin/clang-21+0x118568b)
#40 0x00007fb214551d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#41 0x00007fb214551e40 call_init ./csu/../csu/libc-start.c:128:20
#42 0x00007fb214551e40 __libc_start_main ./csu/../csu/libc-start.c:379:5
#43 0x0000555681bb2b45 _start (/local/home/kchopra/compilers/bin/clang-21+0x12e3b45)
clang: error: unable to execute command: Aborted
clang: error: clang frontend command failed due to signal (use -v to see invocation)
clang version 21.0.0git (https://github.com/llvm/llvm-project.git da17ced11b1cf44b433cb2b850978df4b6bff279)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /local/home/kchopra/compilers/bin
Build config: +assertions
clang: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg: /tmp/clang_assertion_failure-23a67d.c
clang: note: diagnostic msg: /tmp/clang_assertion_failure-23a67d.sh
clang: note: diagnostic msg:
********************
kchopra@ast-epyc5:~$ cat clang_assertion_failure.c
int var_0 ;
int var_1 ;
int var_2 = 1;
int var_3 = 1;
int var_4 ;
int var_5 ;
int var_6 ;
int var_7 = -1;
int var_8 = -1;
int var_9 ;
int var_10 = 1;
int var_11 = 1;
int var_12 ;
int var_13 = -1;
int var_14 = 1;
int var_15 ;
void main() {
BB0:
var_1 = var_11 * var_7 * 2;
if (var_6 * var_9 -1 * var_8 -1 >= 0)
goto BB19;
goto BB26;
BB2:
var_1 = -2031295685;
if (270592145 * var_1 -var_11 * + 982336797 >=
0)
goto BB25;
BB5:
1 + 1866547366;
goto BB11;
BB6:
var_8 =
518856765 * 1056852773;
if (622111740 * var_7 + 731602548 >=
0)
goto BB22;
goto BB9;
BB7:
var_11 = var_8 +
937325169;
if (+ 1157116387 * var_5 +
-1866512088 * 0)
goto BB12;
goto BB18;
BB8:
var_9 = -337842804 * var_13 + 411063341 * var_7 -1246117538 * var_12 +
1470482642;
if (var_9 + 2105508324 * var_15 >=
0)
goto BB12;
BB9:
if (1941446326 * var_1 * var_13 -1784393768 * 1390021125 )
goto BB22;
BB10:
var_3 ;
if (1877379942 * var_4 )
goto BB19;
goto BB14;
BB11:
var_7 = 496628664 * var_12 -899197899;
if (var_15 * 1768606896 )
goto BB13;
goto BB7;
BB12:
var_10 =
-1205930462 * var_1 -71327489 * var_8 -+ 692847803;
if (1938034162 * 1643341669 * var_7 + 1771315746 * var_9 )
goto BB26;
goto BB8;
BB13:
var_8 = 1290553623;
BB14:
var_6 =
718203993 * 2079634724 * var_11 + 284783449;
if (517223783 * 1298443476 * var_12 + 1642359529 >=
0)
goto BB20;
goto BB12;
BB18:
goto BB24;
BB19:
if (-var_3 -1 * 1 >= 0)
goto BB23;
BB20:
var_14 = var_6 ;
if (1 * 1 * var_12 -1 * var_10 -1 >=
0)
goto BB23;
goto BB6;
BB21:
var_13 = 223368084 * 1132342584 * var_13 -643381910 * 263725238;
if (2010126787 * var_13 * +
291393545 >=
0)
goto BB23;
BB22:
var_1 =
1333553438;
if (1993982961 * var_11 +
1323349891 * var_12 -1890661829 )
goto BB21;
goto BB2;
BB23:
if (-var_3 + 1 * var_13 + 1 * var_10 * var_6 + 6 >=
0)
goto BB22;
goto BB27;
BB24:
var_5 = 2037112313 * var_12 ;
if (-1789608316 * var_9 -0)
goto BB27;
goto BB5;
BB25:
var_8 = var_2 -1;
if (var_2 >= 0)
goto BB10;
BB26:
var_3 =
var_13 + 411063205;
if (-277273277 * var_10 -738292269 * 265345052 >=
0)
goto BB5;
goto BB18;
BB27:
var_3 = -+ + 1;
if (var_9 + -var_7 -1 * 0 >= 0)
goto BB25;
if (-var_12 * 1263012903 * var_8 +
-0)
goto BB10;
goto BB2;
}
```
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