[llvm-bugs] [Bug 34634] New: clang crashes on valid code at -O1 and above: Assertion `(I.atEnd() || std::next(I) == def_instr_end()) && "getVRegDef assumes a single definition or no definition"' failed
via llvm-bugs
llvm-bugs at lists.llvm.org
Fri Sep 15 14:37:02 PDT 2017
https://bugs.llvm.org/show_bug.cgi?id=34634
Bug ID: 34634
Summary: clang crashes on valid code at -O1 and above:
Assertion `(I.atEnd() || std::next(I) ==
def_instr_end()) && "getVRegDef assumes a single
definition or no definition"' 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
This appears to be a recent regression. The trunk revision I tested is 313390.
$ clangpolly -v
clang version 6.0.0 (http://llvm.org/git/clang.git
57065b2de4d945670107a164ea557cdfd94643b7) (http://llvm.org/git/llvm.git
4cbf8f8935776997c5de8d913a57073170bf2d99)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/su/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
$
$ clangpolly -O0 small.c; ./a.out
$
$ clangpolly -O1 small.c
clang-6.0:
/home/su/software/tmp/polly/llvm/lib/CodeGen/MachineRegisterInfo.cpp:366:
llvm::MachineInstr* llvm::MachineRegisterInfo::getVRegDef(unsigned int) const:
Assertion `(I.atEnd() || std::next(I) == def_instr_end()) && "getVRegDef
assumes a single definition or no definition"' failed.
#0 0x0000000001ffe6ea llvm::sys::PrintStackTrace(llvm::raw_ostream&)
/home/su/software/tmp/polly/llvm/lib/Support/Unix/Signals.inc:402:0
#1 0x0000000001ffc55e llvm::sys::RunSignalHandlers()
/home/su/software/tmp/polly/llvm/lib/Support/Signals.cpp:50:0
#2 0x0000000001ffc6d2 SignalHandler(int)
/home/su/software/tmp/polly/llvm/lib/Support/Unix/Signals.inc:242:0
#3 0x00007f00b0601390 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x11390)
#4 0x00007f00af373428 gsignal
/build/glibc-bfm8X4/glibc-2.23/signal/../sysdeps/unix/sysv/linux/raise.c:54:0
#5 0x00007f00af37502a abort /build/glibc-bfm8X4/glibc-2.23/stdlib/abort.c:91:0
#6 0x00007f00af36bbd7 __assert_fail_base
/build/glibc-bfm8X4/glibc-2.23/assert/assert.c:92:0
#7 0x00007f00af36bc82 (/lib/x86_64-linux-gnu/libc.so.6+0x2dc82)
#8 0x00000000018bbd11 llvm::MachineRegisterInfo::getVRegDef(unsigned int) const
/home/su/software/tmp/polly/llvm/lib/CodeGen/MachineRegisterInfo.cpp:365:0
#9 0x00000000015098e5 isDefCopyLike(llvm::MachineRegisterInfo*,
llvm::MachineOperand const&)
/home/su/software/tmp/polly/llvm/lib/Target/X86/X86OptimizeLEAs.cpp:311:0
#10 0x000000000150d0b6 llvm::DenseMapInfo<(anonymous
namespace)::MemOpKey>::getHashValue((anonymous namespace)::MemOpKey const&)
/home/su/software/tmp/polly/llvm/lib/Target/X86/X86OptimizeLEAs.cpp:169:0
#11 0x000000000150dfb5 bool llvm::DenseMapBase<llvm::DenseMap<(anonymous
namespace)::MemOpKey, std::__cxx11::list<llvm::MachineInstr*,
std::allocator<llvm::MachineInstr*> >, llvm::DenseMapInfo<(anonymous
namespace)::MemOpKey>, llvm::detail::DenseMapPair<(anonymous
namespace)::MemOpKey, std::__cxx11::list<llvm::MachineInstr*,
std::allocator<llvm::MachineInstr*> > > >, (anonymous namespace)::MemOpKey,
std::__cxx11::list<llvm::MachineInstr*, std::allocator<llvm::MachineInstr*> >,
llvm::DenseMapInfo<(anonymous namespace)::MemOpKey>,
llvm::detail::DenseMapPair<(anonymous namespace)::MemOpKey,
std::__cxx11::list<llvm::MachineInstr*, std::allocator<llvm::MachineInstr*> > >
>::LookupBucketFor<(anonymous namespace)::MemOpKey>((anonymous
namespace)::MemOpKey const&, llvm::detail::DenseMapPair<(anonymous
namespace)::MemOpKey, std::__cxx11::list<llvm::MachineInstr*,
std::allocator<llvm::MachineInstr*> > > const*&) const [clone .constprop.260]
/home/su/software/tmp/polly/llvm/include/llvm/ADT/DenseMap.h:591:0
#12 0x000000000150e912 find
/home/su/software/tmp/polly/llvm/include/llvm/ADT/DenseMap.h:148:0
#13 0x000000000150e912 popScope
/home/su/software/tmp/polly/llvm/lib/Target/X86/X86OptimizeLEAs.cpp:390:0
#14 0x000000000150e912 (anonymous
namespace)::OptimizeLEAPass::FactorizeLEAsBasicBlock(llvm::DomTreeNodeBase<llvm::MachineBasicBlock>*)
[clone .constprop.242]
/home/su/software/tmp/polly/llvm/lib/Target/X86/X86OptimizeLEAs.cpp:1029:0
#15 0x0000000001510d1c FactorizeLEAsAllBasicBlocks
/home/su/software/tmp/polly/llvm/lib/Target/X86/X86OptimizeLEAs.cpp:1034:0
#16 0x0000000001510d1c (anonymous
namespace)::OptimizeLEAPass::runOnMachineFunction(llvm::MachineFunction&)
[clone .part.225] [clone .constprop.229]
/home/su/software/tmp/polly/llvm/lib/Target/X86/X86OptimizeLEAs.cpp:1051:0
#17 0x000000000185f255
llvm::MachineFunctionPass::runOnFunction(llvm::Function&)
/home/su/software/tmp/polly/llvm/lib/CodeGen/MachineFunctionPass.cpp:62:0
#18 0x0000000001b6ee7b llvm::FPPassManager::runOnFunction(llvm::Function&)
/home/su/software/tmp/polly/llvm/lib/IR/LegacyPassManager.cpp:1514:0
#19 0x0000000001b6ef3c llvm::FPPassManager::runOnModule(llvm::Module&)
/home/su/software/tmp/polly/llvm/lib/IR/LegacyPassManager.cpp:1535:0
#20 0x0000000001b6ea7d runOnModule
/home/su/software/tmp/polly/llvm/lib/IR/LegacyPassManager.cpp:1591:0
#21 0x0000000001b6ea7d llvm::legacy::PassManagerImpl::run(llvm::Module&)
/home/su/software/tmp/polly/llvm/lib/IR/LegacyPassManager.cpp:1694:0
#22 0x000000000219e03f llvm::PrettyStackTraceString::~PrettyStackTraceString()
/home/su/software/tmp/polly/llvm/include/llvm/Support/PrettyStackTrace.h:52:0
#23 0x000000000219e03f EmitAssembly
/home/su/software/tmp/polly/llvm/tools/clang/lib/CodeGen/BackendUtil.cpp:793:0
#24 0x000000000219e03f 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> >)
/home/su/software/tmp/polly/llvm/tools/clang/lib/CodeGen/BackendUtil.cpp:1145:0
#25 0x0000000002993bc9 std::unique_ptr<llvm::raw_pwrite_stream,
std::default_delete<llvm::raw_pwrite_stream> >::~unique_ptr()
/usr/include/c++/5/bits/unique_ptr.h:235:0
#26 0x0000000002993bc9
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
/home/su/software/tmp/polly/llvm/tools/clang/lib/CodeGen/CodeGenAction.cpp:261:0
#27 0x0000000002b61188 void std::swap<bool>(bool&, bool&)
/usr/include/c++/5/bits/move.h:187:0
#28 0x0000000002b61188 clang::ParseAST(clang::Sema&, bool, bool)
/home/su/software/tmp/polly/llvm/tools/clang/lib/Parse/ParseAST.cpp:161:0
#29 0x00000000029930bf clang::CodeGenAction::ExecuteAction()
/home/su/software/tmp/polly/llvm/tools/clang/lib/CodeGen/CodeGenAction.cpp:993:0
#30 0x000000000253f4e6 clang::FrontendAction::Execute()
/home/su/software/tmp/polly/llvm/tools/clang/lib/Frontend/FrontendAction.cpp:897:0
#31 0x000000000250fd26
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
/home/su/software/tmp/polly/llvm/tools/clang/lib/Frontend/CompilerInstance.cpp:991:0
#32 0x00000000025cd4d2
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
/home/su/software/tmp/polly/llvm/tools/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:252:0
#33 0x0000000000a7bf78 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*)
/home/su/software/tmp/polly/llvm/tools/clang/tools/driver/cc1_main.cpp:221:0
#34 0x00000000009f9fe8 ExecuteCC1Tool
/home/su/software/tmp/polly/llvm/tools/clang/tools/driver/driver.cpp:302:0
#35 0x00000000009f9fe8 main
/home/su/software/tmp/polly/llvm/tools/clang/tools/driver/driver.cpp:381:0
#36 0x00007f00af35e830 __libc_start_main
/build/glibc-bfm8X4/glibc-2.23/csu/../csu/libc-start.c:325:0
#37 0x0000000000a78899 _start
(/home/su/software/tmp/polly/llvm_build/bin/clang-6.0+0xa78899)
Stack dump:
0. Program arguments: /home/su/software/tmp/polly/llvm_build/bin/clang-6.0
-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 -dwarf-column-info -debugger-tuning=gdb
-momit-leaf-frame-pointer -resource-dir
/home/su/software/tmp/polly/llvm_build/lib/clang/6.0.0 -internal-isystem
/usr/local/include -internal-isystem
/home/su/software/tmp/polly/llvm_build/lib/clang/6.0.0/include
-internal-externc-isystem /usr/include/x86_64-linux-gnu
-internal-externc-isystem /include -internal-externc-isystem /usr/include -O1
-fdebug-compilation-dir
/home/su/projects/c-hunter-latest/test/compilertesting/scripts/speculative-execution/good/20170915-clangpolly-m64-O3-mllvm-polly-build-110210
-ferror-limit 19 -fmessage-length 116 -fobjc-runtime=gcc
-fdiagnostics-show-option -fcolor-diagnostics -o /tmp/small-de3793.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 LEA Optimize' on function '@fn1'
clang-6.0: error: unable to execute command: Aborted (core dumped)
clang-6.0: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 6.0.0 (http://llvm.org/git/clang.git
57065b2de4d945670107a164ea557cdfd94643b7) (http://llvm.org/git/llvm.git
4cbf8f8935776997c5de8d913a57073170bf2d99)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/su/bin
clang-6.0: 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-6.0: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-6.0: note: diagnostic msg: /tmp/small-a7c59d.c
clang-6.0: note: diagnostic msg: /tmp/small-a7c59d.sh
clang-6.0: note: diagnostic msg:
********************
$
------------------------------
int a[1][10], b[1][7], c;
void fn1 ()
{
b[c][c] = a[c][c];
}
int main ()
{
fn1 ();
return 0;
}
--
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20170915/159edb33/attachment-0001.html>
More information about the llvm-bugs
mailing list