[llvm-bugs] [Bug 28015] New: clang crashes on valid code at -O2 and -O3 on x86_64-linux-gnu: Assertion `C1->getType() == C2->getType() && "Op types should be identical!"' failed
via llvm-bugs
llvm-bugs at lists.llvm.org
Mon Jun 6 00:02:51 PDT 2016
https://llvm.org/bugs/show_bug.cgi?id=28015
Bug ID: 28015
Summary: clang crashes on valid code at -O2 and -O3 on
x86_64-linux-gnu: Assertion `C1->getType() ==
C2->getType() && "Op types should be identical!"'
failed
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: unassignedclangbugs at nondot.org
Reporter: su at cs.ucdavis.edu
CC: llvm-bugs at lists.llvm.org
Classification: Unclassified
The current clang trunk crashes when compiling the following test case on
x86_64-linux-gnu at -O2 and -O3 in both 32-bit and 64-bit modes.
This is a regression from 3.8.x.
clang-trunk -v
clang version 3.9.0 (trunk 271803)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/tools/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9.3
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5.3.0
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/4.7.3
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/5.3.0
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
$
$ clang-trunk -Os -c small.c
$ clang-3.8 -O2 -c small.c
$
$ clang-trunk -O2 -c small.c
clang-3.9: /tmp/llvm-builder/llvm-source-trunk/lib/IR/Constants.cpp:1857:
static llvm::Constant* llvm::ConstantExpr::getCompare(short unsigned int,
llvm::Constant*, llvm::Constant*, bool): Assertion `C1->getType() ==
C2->getType() && "Op types should be identical!"' failed.
#0 0x0000000001e193b5 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/local/clang-trunk/bin/clang-3.9+0x1e193b5)
#1 0x0000000001e17346 llvm::sys::RunSignalHandlers()
(/usr/local/clang-trunk/bin/clang-3.9+0x1e17346)
#2 0x0000000001e17564 SignalHandler(int)
(/usr/local/clang-trunk/bin/clang-3.9+0x1e17564)
#3 0x00007f2d78f14340 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10340)
#4 0x00007f2d78132cc9 gsignal
/build/eglibc-3GlaMS/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#5 0x00007f2d781360d8 abort
/build/eglibc-3GlaMS/eglibc-2.19/stdlib/abort.c:91:0
#6 0x00007f2d7812bb86 __assert_fail_base
/build/eglibc-3GlaMS/eglibc-2.19/assert/assert.c:92:0
#7 0x00007f2d7812bc32 (/lib/x86_64-linux-gnu/libc.so.6+0x2fc32)
#8 0x0000000001a1397e (/usr/local/clang-trunk/bin/clang-3.9+0x1a1397e)
#9 0x00000000026f3c52 llvm::UnrolledInstAnalyzer::visitCmpInst(llvm::CmpInst&)
(/usr/local/clang-trunk/bin/clang-3.9+0x26f3c52)
#10 0x0000000001d0f84b analyzeLoopUnrollCost(llvm::Loop const*, unsigned int,
llvm::DominatorTree&, llvm::ScalarEvolution&, llvm::TargetTransformInfo const&,
int) (/usr/local/clang-trunk/bin/clang-3.9+0x1d0f84b)
#11 0x0000000001d12f95 tryToUnrollLoop(llvm::Loop*, llvm::DominatorTree&,
llvm::LoopInfo*, llvm::ScalarEvolution*, llvm::TargetTransformInfo const&,
llvm::AssumptionCache&, bool, llvm::Optional<unsigned int>,
llvm::Optional<unsigned int>, llvm::Optional<bool>, llvm::Optional<bool>)
(/usr/local/clang-trunk/bin/clang-3.9+0x1d12f95)
#12 0x0000000001d13acc (anonymous
namespace)::LoopUnroll::runOnLoop(llvm::Loop*, llvm::LPPassManager&)
(/usr/local/clang-trunk/bin/clang-3.9+0x1d13acc)
#13 0x00000000026f824b llvm::LPPassManager::runOnFunction(llvm::Function&)
(/usr/local/clang-trunk/bin/clang-3.9+0x26f824b)
#14 0x0000000001a7cba3 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/usr/local/clang-trunk/bin/clang-3.9+0x1a7cba3)
#15 0x00000000026d56a7 (anonymous
namespace)::CGPassManager::runOnModule(llvm::Module&)
(/usr/local/clang-trunk/bin/clang-3.9+0x26d56a7)
#16 0x0000000001a7d2e8 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/usr/local/clang-trunk/bin/clang-3.9+0x1a7d2e8)
#17 0x0000000001f68678 clang::EmitBackendOutput(clang::DiagnosticsEngine&,
clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions
const&, llvm::DataLayout const&, llvm::Module*, clang::BackendAction,
llvm::raw_pwrite_stream*) (/usr/local/clang-trunk/bin/clang-3.9+0x1f68678)
#18 0x00000000025c110d
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
(/usr/local/clang-trunk/bin/clang-3.9+0x25c110d)
#19 0x000000000292294d clang::ParseAST(clang::Sema&, bool, bool)
(/usr/local/clang-trunk/bin/clang-3.9+0x292294d)
#20 0x00000000025c146e clang::CodeGenAction::ExecuteAction()
(/usr/local/clang-trunk/bin/clang-3.9+0x25c146e)
#21 0x000000000228e78e clang::FrontendAction::Execute()
(/usr/local/clang-trunk/bin/clang-3.9+0x228e78e)
#22 0x00000000022641f6
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/usr/local/clang-trunk/bin/clang-3.9+0x22641f6)
#23 0x000000000231b8f2
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/usr/local/clang-trunk/bin/clang-3.9+0x231b8f2)
#24 0x0000000000aed738 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/usr/local/clang-trunk/bin/clang-3.9+0xaed738)
#25 0x0000000000aa1e6e main (/usr/local/clang-trunk/bin/clang-3.9+0xaa1e6e)
#26 0x00007f2d7811dec5 __libc_start_main
/build/eglibc-3GlaMS/eglibc-2.19/csu/libc-start.c:321:0
#27 0x0000000000ae97a4 _start (/usr/local/clang-trunk/bin/clang-3.9+0xae97a4)
Stack dump:
0. Program arguments: /usr/local/clang-trunk/bin/clang-3.9 -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-file /data2/small.c -resource-dir
/usr/local/clang-trunk/bin/../lib/clang/3.9.0 -internal-isystem
/usr/local/include -internal-isystem
/usr/local/clang-trunk/bin/../lib/clang/3.9.0/include -internal-externc-isystem
/usr/include/x86_64-linux-gnu -internal-externc-isystem /include
-internal-externc-isystem /usr/include -O2 -fdebug-compilation-dir /data2
-ferror-limit 19 -fmessage-length 276 -fobjc-runtime=gcc
-fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-slp
-o small.o -x c small.c
1. <eof> parser at end of file
2. Per-module optimization passes
3. Running pass 'CallGraph Pass Manager' on module 'small.c'.
4. Running pass 'Loop Pass Manager' on function '@fn1'
5. Running pass 'Unroll loops' on basic block '%for.cond1.preheader'
clang-3.9: error: unable to execute command: Aborted (core dumped)
clang-3.9: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 3.9.0 (trunk 271803)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/tools/bin
clang-3.9: 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-3.9: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-3.9: note: diagnostic msg: /tmp/small-1f44fc.c
clang-3.9: note: diagnostic msg: /tmp/small-1f44fc.sh
clang-3.9: note: diagnostic msg:
********************
$
--------------------------------------
int u, v = 1, *a = &u, *b = &v;
void
fn1 ()
{
int c = 0;
for (; c < 9; c++)
for (; *b < 1; *b = 1)
{
int *d = a;
*b = 0;
for (; *b < 1; *b = 1)
d = 0;
if (!((d == 0) & *a))
__builtin_abort ();
}
}
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