[Bug tree-optimization/64280] New: [5 Regression] ICE in replace_uses_by, at tree-cfg.c:1789

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64280

            Bug ID: 64280
           Summary: [5 Regression] ICE in replace_uses_by, at
                    tree-cfg.c:1789
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rguenth at gcc dot gnu.org

Created attachment 34261
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34261&action=edit
preprocessed source

> ./cc1plus  -quiet trainer.ii -O
trainer.cpp: In member function 'virtual bool zinnia::TrainerImpl::train(const
char*)':
trainer.cpp:124:6: internal compiler error: in replace_uses_by, at
tree-cfg.c:1789
0xfb5c3d replace_uses_by(tree_node*, tree_node*)
        /space/rguenther/src/svn/trunk2/gcc/tree-cfg.c:1789
0xfb61dd gimple_merge_blocks
        /space/rguenther/src/svn/trunk2/gcc/tree-cfg.c:1902
0xa64864 merge_blocks(basic_block_def*, basic_block_def*)
        /space/rguenther/src/svn/trunk2/gcc/cfghooks.c:760
0xfce6cb cleanup_tree_cfg_bb
        /space/rguenther/src/svn/trunk2/gcc/tree-cfgcleanup.c:657
0xfce74a cleanup_tree_cfg_1
        /space/rguenther/src/svn/trunk2/gcc/tree-cfgcleanup.c:689
0xfce8a6 cleanup_tree_cfg_noloop
        /space/rguenther/src/svn/trunk2/gcc/tree-cfgcleanup.c:747
0xfce9b2 cleanup_tree_cfg()
        /space/rguenther/src/svn/trunk2/gcc/tree-cfgcleanup.c:802
0xe79acc execute_function_todo
        /space/rguenther/src/svn/trunk2/gcc/passes.c:1893
0xe78d45 do_per_function
        /space/rguenther/src/svn/trunk2/gcc/passes.c:1632
0xe79dfc execute_todo
        /space/rguenther/src/svn/trunk2/gcc/passes.c:1997
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