[llvm-bugs] [Bug 50881] New: ICE on valid code with -O1: Assertion `(E || !FunctionPass) && "No function transformations should introduce new ref " "edges! Any new ref edges would require IPO which " "function passes aren't allowed to do!"' failed.

Sat Jun 26 00:08:05 PDT 2021

https://bugs.llvm.org/show_bug.cgi?id=50881

            Bug ID: 50881
           Summary: ICE on valid code with -O1: Assertion `(E ||
                    !FunctionPass) && "No function transformations should
                    introduce *new* ref " "edges! Any new ref edges would
                    require IPO which " "function passes aren't allowed to
                    do!"' failed.
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C
          Assignee: unassignedclangbugs at nondot.org
          Reporter: cnsun at uwaterloo.ca
                CC: blitzrakete at gmail.com, dgregor at apple.com,
                    erik.pilkington at gmail.com, llvm-bugs at lists.llvm.org,
                    richard-llvm at metafoo.co.uk

$ clang-trunk -v
clang version 13.0.0 (https://github.com/llvm/llvm-project.git
2e9c75daffddd65e37c3236708b5b133e6f5f2f5)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/cnsun/usr/bin
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64

$ cat mutant.c
baz(y) {
  char *p = &&lab;
  if (y)
    for (;; p++)
      (*p)++;
lab:;
}

$ clang-trunk -O1 mutant.c
mutant.c:1:1: warning: type specifier missing, defaults to 'int'
[-Wimplicit-int]
baz(y) {
^
mutant.c:7:1: warning: non-void function does not return a value
[-Wreturn-type]
}
^
clang-13:
/tmp/tmp.xjN6dMkdrg-clang-builder/llvm-project/llvm/lib/Analysis/CGSCCPassManager.cpp:957:
updateCGAndAnalysisManagerForPass(llvm::LazyCallGraph&,
llvm::LazyCallGraph::SCC&, llvm::LazyCallGraph::Node&,
llvm::CGSCCAnalysisManager&, llvm::CGSCCUpdateResult&,
llvm::FunctionAnalysisManager&, bool)::<lambda(llvm::Function&)>: Assertion `(E
|| !FunctionPass) && "No function transformations should introduce *new* ref "
"edges! Any new ref edges would require IPO which " "function passes aren't
allowed to do!"' failed.
PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash
backtrace, preprocessed source, and associated run script.
Stack dump:
0.      Program arguments: /scratch/software/clang-trunk/bin/clang-13 -cc1
-triple x86_64-unknown-linux-gnu -emit-obj --mrelax-relocations -disable-free
-main-file-name mutant.c -mrelocation-model static -mframe-pointer=none
-fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables
-target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb
-fcoverage-compilation-dir=/scratch/cnsun/workspace/perses-fuzzer/default_c_finding_folder/crash_20210625_010122_0a1c/delta/perses_result
-resource-dir /scratch/software/clang-trunk/lib/clang/13.0.0 -c-isystem .
-c-isystem /usr/local/include/cmsith -internal-isystem
/scratch/software/clang-trunk/lib/clang/13.0.0/include -internal-isystem
/usr/local/include -internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include
-internal-externc-isystem /usr/include/x86_64-linux-gnu
-internal-externc-isystem /include -internal-externc-isystem /usr/include -O1
-fdebug-compilation-dir=/scratch/cnsun/workspace/perses-fuzzer/default_c_finding_folder/crash_20210625_010122_0a1c/delta/perses_result
-ferror-limit 19 -fgnuc-version=4.2.1 -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1
-o /tmp/mutant-d8f4b0.o -x c mutant.c
1.      <eof> parser at end of file
2.      Optimizer
 #0 0x000055ab2e72c184 PrintStackTraceSignalHandler(void*) Signals.cpp:0:0
 #1 0x000055ab2e72993e SignalHandler(int) Signals.cpp:0:0
 #2 0x00007f8e106503c0 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x153c0)
 #3 0x00007f8e100ef18b raise
/build/glibc-ZN95T4/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1
 #4 0x00007f8e100ce859 abort /build/glibc-ZN95T4/glibc-2.31/stdlib/abort.c:81:7
 #5 0x00007f8e100ce729 get_sysdep_segment_value
/build/glibc-ZN95T4/glibc-2.31/intl/loadmsgcat.c:509:8
 #6 0x00007f8e100ce729 _nl_load_domain
/build/glibc-ZN95T4/glibc-2.31/intl/loadmsgcat.c:970:34
 #7 0x00007f8e100dff36 (/lib/x86_64-linux-gnu/libc.so.6+0x36f36)
 #8 0x000055ab2d5426ec updateCGAndAnalysisManagerForPass(llvm::LazyCallGraph&,
llvm::LazyCallGraph::SCC&, llvm::LazyCallGraph::Node&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::CGSCCUpdateResult&, llvm::AnalysisManager<llvm::Function>&,
bool)::'lambda'(llvm::Function&)::operator()(llvm::Function&) const
CGSCCPassManager.cpp:0:0
 #9 0x000055ab2d5437f0 updateCGAndAnalysisManagerForPass(llvm::LazyCallGraph&,
llvm::LazyCallGraph::SCC&, llvm::LazyCallGraph::Node&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::CGSCCUpdateResult&, llvm::AnalysisManager<llvm::Function>&, bool)
CGSCCPassManager.cpp:0:0
#10 0x000055ab2d545371
llvm::CGSCCToFunctionPassAdaptor::run(llvm::LazyCallGraph::SCC&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&)
(/scratch/software/clang-trunk/bin/clang-13+0x2774371)
#11 0x000055ab2c2fe506 llvm::detail::PassModel<llvm::LazyCallGraph::SCC,
llvm::CGSCCToFunctionPassAdaptor, llvm::PreservedAnalyses,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&)
(/scratch/software/clang-trunk/bin/clang-13+0x152d506)
#12 0x000055ab2d53c70b llvm::PassManager<llvm::LazyCallGraph::SCC,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&)
(/scratch/software/clang-trunk/bin/clang-13+0x276b70b)
#13 0x000055ab2df82ad6 llvm::detail::PassModel<llvm::LazyCallGraph::SCC,
llvm::PassManager<llvm::LazyCallGraph::SCC,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>, llvm::PreservedAnalyses,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&)
(/scratch/software/clang-trunk/bin/clang-13+0x31b1ad6)
#14 0x000055ab2d540d84
llvm::DevirtSCCRepeatedPass::run(llvm::LazyCallGraph::SCC&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&)
(/scratch/software/clang-trunk/bin/clang-13+0x276fd84)
#15 0x000055ab2df82a86 llvm::detail::PassModel<llvm::LazyCallGraph::SCC,
llvm::DevirtSCCRepeatedPass, llvm::PreservedAnalyses,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&,
llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&,
llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&)
(/scratch/software/clang-trunk/bin/clang-13+0x31b1a86)
#16 0x000055ab2d53ea73
llvm::ModuleToPostOrderCGSCCPassAdaptor::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/scratch/software/clang-trunk/bin/clang-13+0x276da73)
#17 0x000055ab2df82b26 llvm::detail::PassModel<llvm::Module,
llvm::ModuleToPostOrderCGSCCPassAdaptor, llvm::PreservedAnalyses,
llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/scratch/software/clang-trunk/bin/clang-13+0x31b1b26)
#18 0x000055ab2de648df llvm::PassManager<llvm::Module,
llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/scratch/software/clang-trunk/bin/clang-13+0x30938df)
#19 0x000055ab2df85c05 llvm::ModuleInlinerWrapperPass::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/scratch/software/clang-trunk/bin/clang-13+0x31b4c05)
#20 0x000055ab2f904686 llvm::detail::PassModel<llvm::Module,
llvm::ModuleInlinerWrapperPass, llvm::PreservedAnalyses,
llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/scratch/software/clang-trunk/bin/clang-13+0x4b33686)
#21 0x000055ab2de648df llvm::PassManager<llvm::Module,
llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&,
llvm::AnalysisManager<llvm::Module>&)
(/scratch/software/clang-trunk/bin/clang-13+0x30938df)
#22 0x000055ab2ea5d6ad (anonymous
namespace)::EmitAssemblyHelper::EmitAssemblyWithNewPassManager(clang::BackendAction,
std::unique_ptr<llvm::raw_pwrite_stream,
std::default_delete<llvm::raw_pwrite_stream> >) BackendUtil.cpp:0:0
#23 0x000055ab2ea6092d clang::EmitBackendOutput(clang::DiagnosticsEngine&,
clang::HeaderSearchOptions const&, clang::CodeGenOptions const&,
clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef,
llvm::Module*, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream,
std::default_delete<llvm::raw_pwrite_stream> >)
(/scratch/software/clang-trunk/bin/clang-13+0x3c8f92d)
#24 0x000055ab2f889e1f
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
(/scratch/software/clang-trunk/bin/clang-13+0x4ab8e1f)
#25 0x000055ab309414d9 clang::ParseAST(clang::Sema&, bool, bool)
(/scratch/software/clang-trunk/bin/clang-13+0x5b704d9)
#26 0x000055ab2f888968 clang::CodeGenAction::ExecuteAction()
(/scratch/software/clang-trunk/bin/clang-13+0x4ab7968)
#27 0x000055ab2f138599 clang::FrontendAction::Execute()
(/scratch/software/clang-trunk/bin/clang-13+0x4367599)
#28 0x000055ab2f0cb7e6
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/scratch/software/clang-trunk/bin/clang-13+0x42fa7e6)
#29 0x000055ab2f216480
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/scratch/software/clang-trunk/bin/clang-13+0x4445480)
#30 0x000055ab2c036696 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/scratch/software/clang-trunk/bin/clang-13+0x1265696)
#31 0x000055ab2c0329d8 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&)
driver.cpp:0:0
#32 0x000055ab2bf600e6 main
(/scratch/software/clang-trunk/bin/clang-13+0x118f0e6)
#33 0x00007f8e100d00b3 __libc_start_main
/build/glibc-ZN95T4/glibc-2.31/csu/../csu/libc-start.c:342:3
#34 0x000055ab2c03254e _start
(/scratch/software/clang-trunk/bin/clang-13+0x126154e)
clang-13: error: unable to execute command: Aborted (core dumped)
clang-13: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 13.0.0 (https://github.com/llvm/llvm-project.git
2e9c75daffddd65e37c3236708b5b133e6f5f2f5)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/cnsun/usr/bin
clang-13: note: diagnostic msg:
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-13: note: diagnostic msg: /tmp/mutant-4cc3f2.c
clang-13: note: diagnostic msg: /tmp/mutant-4cc3f2.sh
clang-13: note: diagnostic msg:

********************

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[llvm-bugs] [Bug 50881] New: ICE on valid code with -O1: Assertion `(E || !FunctionPass) && "No function transformations should introduce *new* ref " "edges! Any new ref edges would require IPO which " "function passes aren't allowed to do!"' failed.

[llvm-bugs] [Bug 50881] New: ICE on valid code with -O1: Assertion `(E || !FunctionPass) && "No function transformations should introduce new ref " "edges! Any new ref edges would require IPO which " "function passes aren't allowed to do!"' failed.