[llvm-bugs] [Bug 34441] New: polly crashes with "opt -gvn -polly-opt-isl -polly-codegen -polly-scops -polly-codegen" while running pass 'Polly - Create LLVM-IR from SCoPs'

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=34441

            Bug ID: 34441
           Summary: polly crashes with "opt -gvn -polly-opt-isl
                    -polly-codegen -polly-scops -polly-codegen" while
                    running pass 'Polly - Create LLVM-IR from SCoPs'
           Product: Polly
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Optimizer
          Assignee: polly-dev at googlegroups.com
          Reporter: su at cs.ucdavis.edu
                CC: llvm-bugs at lists.llvm.org

$ clangpolly -v
clang version 6.0.0 (http://llvm.org/git/clang.git
fc6ac77722c6bdc2508229af6f8aebfebe02f0fa) (http://llvm.org/git/llvm.git
1ee1fb604621025bd2b1a681a09ab54ff69623d1)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/su/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9.4
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5
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/4.9.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.3.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.2.0
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
$ 
$ clangpolly -O3 -mllvm -disable-llvm-optzns -c -emit-llvm -o small.bc small.c 
$ optpolly -gvn -polly-opt-isl -polly-codegen -polly-scops -polly-codegen -o
small-opt.bc small.bc
optpolly:
/home/su/software/tmp/polly/llvm/tools/polly/lib/CodeGen/IslExprBuilder.cpp:698:
llvm::Value* polly::IslExprBuilder::createId(isl_ast_expr*): Assertion
`IDToValue.count(Id) && "Identifier not found"' failed.
#0 0x00000000038af81a (optpolly+0x38af81a)
#1 0x00000000038af8ab (optpolly+0x38af8ab)
#2 0x00000000038adcc0 (optpolly+0x38adcc0)
#3 0x00000000038af19d (optpolly+0x38af19d)
#4 0x00007faf71c53330 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10330)
#5 0x00007faf70a3bc37 gsignal
/build/eglibc-SvCtMH/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#6 0x00007faf70a3f028 abort
/build/eglibc-SvCtMH/eglibc-2.19/stdlib/abort.c:91:0
#7 0x00007faf70a34bf6 __assert_fail_base
/build/eglibc-SvCtMH/eglibc-2.19/assert/assert.c:92:0
#8 0x00007faf70a34ca2 (/lib/x86_64-linux-gnu/libc.so.6+0x2fca2)
#9 0x0000000003cd54d7 (optpolly+0x3cd54d7)
#10 0x0000000003cd57db (optpolly+0x3cd57db)
#11 0x0000000003cd3010 (optpolly+0x3cd3010)
#12 0x0000000003cd52b7 (optpolly+0x3cd52b7)
#13 0x0000000003cd57c6 (optpolly+0x3cd57c6)
#14 0x0000000003cdd5be (optpolly+0x3cdd5be)
#15 0x0000000003cde81d (optpolly+0x3cde81d)
#16 0x0000000003cdfb92 (optpolly+0x3cdfb92)
#17 0x0000000003cdfaba (optpolly+0x3cdfaba)
#18 0x0000000003cdfbf2 (optpolly+0x3cdfbf2)
#19 0x0000000003c84a05 (optpolly+0x3c84a05)
#20 0x0000000003c84d8e (optpolly+0x3c84d8e)
#21 0x0000000003c7b2a5 (optpolly+0x3c7b2a5)
#22 0x0000000002ac5137 (optpolly+0x2ac5137)
#23 0x0000000003193bcc (optpolly+0x3193bcc)
#24 0x0000000003193d5f (optpolly+0x3193d5f)
#25 0x00000000031940fa (optpolly+0x31940fa)
#26 0x0000000003194851 (optpolly+0x3194851)
#27 0x0000000003194a91 (optpolly+0x3194a91)
#28 0x00000000017fe118 (optpolly+0x17fe118)
#29 0x00007faf70a26f45 __libc_start_main
/build/eglibc-SvCtMH/eglibc-2.19/csu/libc-start.c:321:0
#30 0x00000000017d7a29 (optpolly+0x17d7a29)
Stack dump:
0.      Program arguments: optpolly -gvn -polly-opt-isl -polly-codegen
-polly-scops -polly-codegen -o small-opt.bc small.bc 
1.      Running pass 'Function Pass Manager' on module 'small.bc'.
2.      Running pass 'Region Pass Manager' on function '@main'
3.      Running pass 'Polly - Create LLVM-IR from SCoPs' on basic block
'%while.cond'
Aborted (core dumped)
$ 


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


int a, b, c;

int main ()
{
  while (a++)
    while (b)
      {
        c = 0;
        break;
      }
  return 0; 
}

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