http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50587

             Bug #: 50587
           Summary: ICE init_range_entry, at tree-ssa-reassoc.c:1698
                    caused by recent change
    Classification: Unclassified
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: andi-...@firstfloor.org


Jakub, your recent change

        PR tree-optimization/46309
        * fold-const.c (make_range, merge_ranges): Remove prototypes.
        (make_range_step): New function.
        (make_range): Use it.
        * tree.h (make_range_step): New prototypes.
        * Makefile.in (tree-ssa-reassoc.o): Depend on $(DIAGNOSTIC_CORE_H).
        * tree-ssa-reassoc.c: Include diagnostic-core.h.
        (struct range_entry): New type.
        (init_range_entry, range_entry_cmp, update_range_test,
        optimize_range_tests): New functions.
        (reassociate_bb): Call optimize_range_tests.

        * gcc.dg/pr46309.c: New test.

breaks my LTO kernel builds.

I get a lot of

internal compiler error: in init_range_entry, at tree-ssa-reassoc.c:1698

in different files. With the patch reverted things are fine

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