[Bug tree-optimization/68841] New: [6 Regression] gcc.c-torture/execute/pr59358.c FAILs with custom compiler flags

[zsojka at seznam dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68841

            Bug ID: 68841
           Summary: [6 Regression] gcc.c-torture/execute/pr59358.c FAILs
                    with custom compiler flags
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz
  Target Milestone: ---
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu

Created attachment 36984
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36984&action=edit
reduced testcase

Output:
$ gcc -Og -fif-conversion -flive-range-shrinkage -fpeel-loops
-frerun-cse-after-loop testcase.c
$ ./a.out 
Aborted

$ gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest/bin/gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-231460-checking-yes-rtl-df-nographite/bin/../libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-checking=yes,rtl,df --without-cloog --without-ppl --without-isl
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-231460-checking-yes-rtl-df-nographite
Thread model: posix
gcc version 6.0.0 20151209 (experimental) (GCC) 

Tested revisions:
r231460 - FAIL
5-branch r231451 - OK