[llvm-bugs] [Bug 33401] New: clang crashes on valid code at -O1 (only) on x86_64-linux-gnu: Assertion `N->getOpcode() != ISD::DELETED_NODE && "DELETED_NODE in CSEMap!"' failed

via llvm-bugs llvm-bugs at lists.llvm.org
Sat Jun 10 18:53:16 PDT 2017


https://bugs.llvm.org/show_bug.cgi?id=33401

            Bug ID: 33401
           Summary: clang crashes on valid code at -O1 (only) on
                    x86_64-linux-gnu: Assertion `N->getOpcode() !=
                    ISD::DELETED_NODE && "DELETED_NODE in CSEMap!"' failed
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: su at cs.ucdavis.edu
                CC: llvm-bugs at lists.llvm.org

$ clang -v
clang version 5.0.0 (trunk 305148) (llvm/trunk 305147)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/clang-trunk/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5.4.0
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/6.0.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.4.7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.6.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8.5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9.3
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.4.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.0.0
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.4.0
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
$ 
$ clang -O0 -w -c small.c
$ 
$ clang -O1 -w -c small.c
clang-5.0:
/tmp/llvm-builder/llvm-source-trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:771:
bool llvm::SelectionDAG::RemoveNodeFromCSEMaps(llvm::SDNode*): Assertion
`N->getOpcode() != ISD::DELETED_NODE && "DELETED_NODE in CSEMap!"' failed.
#0 0x0000000002100dca llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/local/clang-trunk/bin/clang-5.0+0x2100dca)
#1 0x00000000020feb3e llvm::sys::RunSignalHandlers()
(/usr/local/clang-trunk/bin/clang-5.0+0x20feb3e)
#2 0x00000000020fecb2 SignalHandler(int)
(/usr/local/clang-trunk/bin/clang-5.0+0x20fecb2)
#3 0x00007f0a93104390 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x11390)
#4 0x00007f0a91e77428 gsignal
/build/glibc-9tT8Do/glibc-2.23/signal/../sysdeps/unix/sysv/linux/raise.c:54:0
#5 0x00007f0a91e7902a abort /build/glibc-9tT8Do/glibc-2.23/stdlib/abort.c:91:0
#6 0x00007f0a91e6fbd7 __assert_fail_base
/build/glibc-9tT8Do/glibc-2.23/assert/assert.c:92:0
#7 0x00007f0a91e6fc82 (/lib/x86_64-linux-gnu/libc.so.6+0x2dc82)
#8 0x00000000028b887e llvm::SelectionDAG::RemoveNodeFromCSEMaps(llvm::SDNode*)
(/usr/local/clang-trunk/bin/clang-5.0+0x28b887e)
#9 0x00000000028b8e41 llvm::SelectionDAG::DeleteNode(llvm::SDNode*)
(/usr/local/clang-trunk/bin/clang-5.0+0x28b8e41)
#10 0x00000000027f5605 (anonymous
namespace)::DAGCombiner::CombineTo(llvm::SDNode*, llvm::SDValue const*,
unsigned int, bool) [clone .constprop.660]
(/usr/local/clang-trunk/bin/clang-5.0+0x27f5605)
#11 0x0000000002800cb8 (anonymous
namespace)::DAGCombiner::visitZERO_EXTEND(llvm::SDNode*)
(/usr/local/clang-trunk/bin/clang-5.0+0x2800cb8)
#12 0x000000000281c196 (anonymous namespace)::DAGCombiner::visit(llvm::SDNode*)
(/usr/local/clang-trunk/bin/clang-5.0+0x281c196)
#13 0x000000000281ddbf (anonymous
namespace)::DAGCombiner::combine(llvm::SDNode*)
(/usr/local/clang-trunk/bin/clang-5.0+0x281ddbf)
#14 0x00000000028210c2 (anonymous
namespace)::DAGCombiner::Run(llvm::CombineLevel) [clone .constprop.623]
(/usr/local/clang-trunk/bin/clang-5.0+0x28210c2)
#15 0x0000000002823244 llvm::SelectionDAG::Combine(llvm::CombineLevel,
llvm::AAResults*, llvm::CodeGenOpt::Level)
(/usr/local/clang-trunk/bin/clang-5.0+0x2823244)
#16 0x00000000028dc2c8 llvm::SelectionDAGISel::CodeGenAndEmitDAG()
(/usr/local/clang-trunk/bin/clang-5.0+0x28dc2c8)
#17 0x00000000028e2991
llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&)
(/usr/local/clang-trunk/bin/clang-5.0+0x28e2991)
#18 0x00000000028e479f
llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) [clone
.part.796] [clone .constprop.821]
(/usr/local/clang-trunk/bin/clang-5.0+0x28e479f)
#19 0x0000000001524b74 (anonymous
namespace)::X86DAGToDAGISel::runOnMachineFunction(llvm::MachineFunction&)
(/usr/local/clang-trunk/bin/clang-5.0+0x1524b74)
#20 0x00000000019417d5
llvm::MachineFunctionPass::runOnFunction(llvm::Function&)
(/usr/local/clang-trunk/bin/clang-5.0+0x19417d5)
#21 0x0000000001c550a3 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/usr/local/clang-trunk/bin/clang-5.0+0x1c550a3)
#22 0x0000000001c5516c llvm::FPPassManager::runOnModule(llvm::Module&)
(/usr/local/clang-trunk/bin/clang-5.0+0x1c5516c)
#23 0x0000000001c54c0d llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/usr/local/clang-trunk/bin/clang-5.0+0x1c54c0d)
#24 0x00000000022b3f78 clang::EmitBackendOutput(clang::DiagnosticsEngine&,
clang::HeaderSearchOptions const&, clang::CodeGenOptions const&,
clang::TargetOptions const&, clang::LangOptions const&, llvm::DataLayout
const&, llvm::Module*, clang::BackendAction,
std::unique_ptr<llvm::raw_pwrite_stream,
std::default_delete<llvm::raw_pwrite_stream> >)
(/usr/local/clang-trunk/bin/clang-5.0+0x22b3f78)
#25 0x00000000029a56b9
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
(/usr/local/clang-trunk/bin/clang-5.0+0x29a56b9)
#26 0x0000000002d72ab8 clang::ParseAST(clang::Sema&, bool, bool)
(/usr/local/clang-trunk/bin/clang-5.0+0x2d72ab8)
#27 0x00000000029a4a4f clang::CodeGenAction::ExecuteAction()
(/usr/local/clang-trunk/bin/clang-5.0+0x29a4a4f)
#28 0x000000000265bf7e clang::FrontendAction::Execute()
(/usr/local/clang-trunk/bin/clang-5.0+0x265bf7e)
#29 0x000000000262b576
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/usr/local/clang-trunk/bin/clang-5.0+0x262b576)
#30 0x00000000026ead4a
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/usr/local/clang-trunk/bin/clang-5.0+0x26ead4a)
#31 0x0000000000b6b0d8 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/usr/local/clang-trunk/bin/clang-5.0+0xb6b0d8)
#32 0x0000000000afcbb3 main (/usr/local/clang-trunk/bin/clang-5.0+0xafcbb3)
#33 0x00007f0a91e62830 __libc_start_main
/build/glibc-9tT8Do/glibc-2.23/csu/../csu/libc-start.c:325:0
#34 0x0000000000b67789 _start (/usr/local/clang-trunk/bin/clang-5.0+0xb67789)
Stack dump:
0.      Program arguments: /usr/local/clang-trunk/bin/clang-5.0 -cc1 -triple
x86_64-unknown-linux-gnu -emit-obj -disable-free -main-file-name small.c
-mrelocation-model static -mthread-model posix -fmath-errno -masm-verbose
-mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64
-momit-leaf-frame-pointer -dwarf-column-info -debugger-tuning=gdb
-coverage-notes-file /home/su/small.gcno -resource-dir
/usr/local/clang-trunk/lib/clang/5.0.0 -internal-isystem /usr/local/include
-internal-isystem /usr/local/clang-trunk/lib/clang/5.0.0/include
-internal-externc-isystem /usr/include/x86_64-linux-gnu
-internal-externc-isystem /include -internal-externc-isystem /usr/include -O1
-w -fdebug-compilation-dir /home/su -ferror-limit 19 -fmessage-length 116
-fobjc-runtime=gcc -fdiagnostics-show-option -fcolor-diagnostics -o small.o -x
c small.c 
1.      <eof> parser at end of file
2.      Code generation
3.      Running pass 'Function Pass Manager' on module 'small.c'.
4.      Running pass 'X86 DAG->DAG Instruction Selection' on function '@fn1'
clang-5.0: error: unable to execute command: Aborted (core dumped)
clang-5.0: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 5.0.0 (trunk 305148) (llvm/trunk 305147)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/clang-trunk/bin
clang-5.0: note: diagnostic msg: PLEASE submit a bug report to
http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and
associated run script.
clang-5.0: note: diagnostic msg: 
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-5.0: note: diagnostic msg: /tmp/small-7f5ca0.c
clang-5.0: note: diagnostic msg: /tmp/small-7f5ca0.sh
clang-5.0: note: diagnostic msg: 

********************
$ 


-------------------------------------


unsigned char a;
volatile int b, c, e;
int d, f;

void fn1 ()
{
  short h;
  unsigned char i = a;
  h = (b || ~d) * a ^ i;
  e = (f || i) & ~a & (&c || 0);
  b = h;
}

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