[Bug ipa/69589] New: [6 Regression] ICE in initialize_node_lattices, at ipa-cp.c:971

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69589

            Bug ID: 69589
           Summary: [6 Regression] ICE in initialize_node_lattices, at
                    ipa-cp.c:971
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
  Target Milestone: ---

Hello.

Following ICE comes from Firefox test-suite, I was able to reduce the number of
pre-processed source files to 3 to expose the internal compiler error.

$ c++ -flto -O2 -rdynamic Unified_cpp_js_src*.ii
lto1: internal compiler error: in initialize_node_lattices, at ipa-cp.c:971
0x113c6c8 initialize_node_lattices
        ../../gcc/ipa-cp.c:971
0x113c6c8 ipcp_propagate_stage
        ../../gcc/ipa-cp.c:2927
0x113da3c ipcp_driver
        ../../gcc/ipa-cp.c:4606
0x113da3c execute
        ../../gcc/ipa-cp.c:4698

Source files:
https://drive.google.com/file/d/0B0pisUJ80pO1SWtLUnNVQkZwZFU/view?usp=sharing

I tried to reduce it with creduce (now having capability to reduce multiple
files), but it does not process any simplification.

Thanks,
Martin