[llvm-bugs] [Bug 43347] New: instcombine crashes: Assertion `!empty()' failed.
via llvm-bugs
llvm-bugs at lists.llvm.org
Wed Sep 18 02:03:59 PDT 2019
https://bugs.llvm.org/show_bug.cgi?id=43347
Bug ID: 43347
Summary: instcombine crashes: Assertion `!empty()' failed.
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Scalar Optimizations
Assignee: unassignedbugs at nondot.org
Reporter: cszide at 163.com
CC: llvm-bugs at lists.llvm.org
Created attachment 22517
--> https://bugs.llvm.org/attachment.cgi?id=22517&action=edit
.bc file of the source code
$clang -v
clang version 10.0.0 (trunk 371952)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.4.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.4.0
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
$clang -O3 -c -emit-llvm -femit-all-decls -mllvm -disable-llvm-optzns small.c
$opt -loop-rotate -partial-inliner -strip -instcombine small.bc -o small-opt.bc
opt:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/include/llvm/ADT/StringRef.h:156:
char llvm::StringRef::back() const: Assertion `!empty()' failed.
Stack dump:
0. Program arguments:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt -loop-rotate
-partial-inliner -strip -instcombine small.bc -o small-opt.bc
1. Running pass 'Function Pass Manager' on module 'small.bc'.
2. Running pass 'Combine redundant instructions' on function '@0'
#0 0x00005556a267d27a llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x277727a)
#1 0x00005556a267af54 llvm::sys::RunSignalHandlers()
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x2774f54)
#2 0x00005556a267b092 SignalHandler(int)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x2775092)
#3 0x00007f526f2da890 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x12890)
#4 0x00007f526df8ce97 raise
/build/glibc-OTsEL5/glibc-2.27/signal/../sysdeps/unix/sysv/linux/raise.c:51:0
#5 0x00007f526df8e801 abort /build/glibc-OTsEL5/glibc-2.27/stdlib/abort.c:81:0
#6 0x00007f526df7e39a __assert_fail_base
/build/glibc-OTsEL5/glibc-2.27/assert/assert.c:89:0
#7 0x00007f526df7e412 (/lib/x86_64-linux-gnu/libc.so.6+0x30412)
#8 0x00005556a2799899 optimizeDoubleFP(llvm::CallInst*,
llvm::IRBuilder<llvm::ConstantFolder, llvm::IRBuilderDefaultInserter>&, bool,
bool)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x2893899)
#9 0x00005556a279a391 llvm::LibCallSimplifier::optimizeSqrt(llvm::CallInst*,
llvm::IRBuilder<llvm::ConstantFolder, llvm::IRBuilderDefaultInserter>&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x2894391)
#10 0x00005556a279e016
llvm::LibCallSimplifier::optimizeFloatingPointLibCall(llvm::CallInst*,
llvm::LibFunc, llvm::IRBuilder<llvm::ConstantFolder,
llvm::IRBuilderDefaultInserter>&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x2898016)
#11 0x00005556a279f424 llvm::LibCallSimplifier::optimizeCall(llvm::CallInst*)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x2899424)
#12 0x00005556a219c8db llvm::InstCombiner::tryOptimizeCall(llvm::CallInst*)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x22968db)
#13 0x00005556a219f9fc llvm::InstCombiner::visitCallBase(llvm::CallBase&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x22999fc)
#14 0x00005556a21a049b llvm::InstCombiner::visitCallInst(llvm::CallInst&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x229a49b)
#15 0x00005556a2170c96 llvm::InstCombiner::run()
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x226ac96)
#16 0x00005556a21732da combineInstructionsOverFunction(llvm::Function&,
llvm::InstCombineWorklist&, llvm::AAResults*, llvm::AssumptionCache&,
llvm::TargetLibraryInfo&, llvm::DominatorTree&,
llvm::OptimizationRemarkEmitter&, llvm::BlockFrequencyInfo*,
llvm::ProfileSummaryInfo*, bool, llvm::LoopInfo*)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x226d2da)
#17 0x00005556a21738f1
llvm::InstructionCombiningPass::runOnFunction(llvm::Function&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x226d8f1)
#18 0x00005556a1fbcde9 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x20b6de9)
#19 0x00005556a1fbcee1 llvm::FPPassManager::runOnModule(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x20b6ee1)
#20 0x00005556a1fbc041 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x20b6041)
#21 0x00005556a079574f main
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x88f74f)
#22 0x00007f526df6fb97 __libc_start_main
/build/glibc-OTsEL5/glibc-2.27/csu/../csu/libc-start.c:344:0
#23 0x00005556a080d54a _start
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build9/bin/opt+0x90754a)
Aborted (core dumped)
------------------------------------------
#include<math.h>
float a;
int c;
void b() {
for (; c;)
sqrt(a);
}
int main() { b(); 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/20190918/817c5dbe/attachment-0001.html>
More information about the llvm-bugs
mailing list