[Bug c++/67993] New: ice in compare_operand with -O2 -march=native

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67993

            Bug ID: 67993
           Summary: ice in compare_operand with -O2 -march=native
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
  Target Milestone: ---

Created attachment 36530
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36530&action=edit
gzipped C++ source code

$ ../results/bin/g++ -c -w -O2 -march=native bug236.cc
/home/dcb/rpmbuild/BUILD/eigen-eigen-c58038c56923/x86_64-redhat-linux-gnu/doc/snippets/compile_HouseholderQR_solve.cpp:21:1:
internal compiler error: in compare_operand, at ipa-icf-gimple.c:419
 }
 ^
0x151e7d7 ipa_icf_gimple::func_checker::compare_operand(tree_node*, tree_node*)
        ../../src/trunk/gcc/ipa-icf-gimple.c:418
0x151f90a ipa_icf_gimple::func_checker::compare_operand(tree_node*, tree_node*)
        ../../src/trunk/gcc/tree.h:3046
0x151f90a ipa_icf_gimple::func_checker::compare_memory_operand(tree_node*,
tree_node*)
        ../../src/trunk/gcc/ipa-icf-gimple.c:330
0x151fe84 ipa_icf_gimple::func_checker::compare_memory_operand(tree_node*,
tree_node*)
        ../../src/trunk/gcc/ipa-icf-gimple.c:266

gcc is today's trunk.