[Bug tree-optimization/56310] New: [4.8 Regression] ICE: in decide_about_value, at ipa-cp.c:3310 with -fipa-cp -fno-early-inlining -fipa-cp-clone --param=ipa-cp-eval-threshold=1

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56310

             Bug #: 56310
           Summary: [4.8 Regression] ICE: in decide_about_value, at
                    ipa-cp.c:3310 with -fipa-cp -fno-early-inlining
                    -fipa-cp-clone --param=ipa-cp-eval-threshold=1
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz


Created attachment 29444
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29444
reduced testcase

Compiler output:
$ gcc -O -fipa-cp -std=gnu++0x -fno-early-inlining -fipa-cp-clone
--param=ipa-cp-eval-threshold=1 testcase.C
testcase.C:33:1: internal compiler error: in decide_about_value, at
ipa-cp.c:3310
 }
 ^
0x12c7bed decide_about_value
        /mnt/svn/gcc-trunk/gcc/ipa-cp.c:3308
0x12ca200 decide_whether_version_node
        /mnt/svn/gcc-trunk/gcc/ipa-cp.c:3367
0x12ca200 ipcp_decision_stage
        /mnt/svn/gcc-trunk/gcc/ipa-cp.c:3495
0x12ca200 ipcp_driver
        /mnt/svn/gcc-trunk/gcc/ipa-cp.c:3537
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r195931 - crash
r192654 - OK