[llvm-bugs] [Bug 34444] New: polly crashes with "opt -newgvn -jump-threading -polly-mse" while running pass 'Polly - Maximal static expansion of SCoP'

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=34444

            Bug ID: 34444
           Summary: polly crashes with "opt -newgvn -jump-threading
                    -polly-mse" while running pass 'Polly - Maximal static
                    expansion of SCoP'
           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
7ede89db2c39be7ae220fdb4d1d5c9325a6c776a) (http://llvm.org/git/llvm.git
3cef9810b2ae6dd91c1cf211b47c8d838783196f)
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 -O3 -mllvm -disable-llvm-optzns -c -emit-llvm -o small.bc small.c
$ optpolly -newgvn -jump-threading -polly-mse -o small-opt.bc small.bc
optpolly:
/home/su/software/tmp/polly/llvm/tools/polly/lib/Transform/MaximalStaticExpansion.cpp:437:
polly::ScopArrayInfo*
{anonymous}::MaximalStaticExpander::expandAccess(polly::Scop&,
polly::MemoryAccess*): Assertion `isDimBoundedByConstant(CurrentStmtDomain, i)
&& "Domain boundary are not constant."' failed.
#0 0x00000000039741df (optpolly+0x39741df)
#1 0x0000000003974272 (optpolly+0x3974272)
#2 0x00000000039724b9 (optpolly+0x39724b9)
#3 0x0000000003973a54 (optpolly+0x3973a54)
#4 0x00007fbd281af390 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x11390)
#5 0x00007fbd26f21428 gsignal
/build/glibc-bfm8X4/glibc-2.23/signal/../sysdeps/unix/sysv/linux/raise.c:54:0
#6 0x00007fbd26f2302a abort /build/glibc-bfm8X4/glibc-2.23/stdlib/abort.c:91:0
#7 0x00007fbd26f19bd7 __assert_fail_base
/build/glibc-bfm8X4/glibc-2.23/assert/assert.c:92:0
#8 0x00007fbd26f19c82 (/lib/x86_64-linux-gnu/libc.so.6+0x2dc82)
#9 0x0000000003cca62d (optpolly+0x3cca62d)
#10 0x0000000003ccb05e (optpolly+0x3ccb05e)
#11 0x0000000003d7a4a5 (optpolly+0x3d7a4a5)
#12 0x0000000002acf70a (optpolly+0x2acf70a)
#13 0x00000000031f6b88 (optpolly+0x31f6b88)
#14 0x00000000031f6d21 (optpolly+0x31f6d21)
#15 0x00000000031f709c (optpolly+0x31f709c)
#16 0x00000000031f77b1 (optpolly+0x31f77b1)
#17 0x00000000031f79bd (optpolly+0x31f79bd)
#18 0x000000000172ca2e (optpolly+0x172ca2e)
#19 0x00007fbd26f0c830 __libc_start_main
/build/glibc-bfm8X4/glibc-2.23/csu/../csu/libc-start.c:325:0
#20 0x0000000001704069 (optpolly+0x1704069)
Stack dump:
0.      Program arguments: optpolly -newgvn -jump-threading -polly-mse -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 - Maximal static expansion of SCoP' on basic block
'%for.cond'
Aborted (core dumped)
$ 


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


int printf (const char *, ...);

int a, b, c;

int main ()
{
  for (; c < 16; c++)
    {
      b = c;
      if (!c)
        b = 1;
      a = b;
    }
  printf ("%d\n", a);
  return 0; 
}

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