[Bug rtl-optimization/55153] New: [4.8 Regression] ICE: in begin_move_insn, at sched-ebb.c:205 with -fsched2-use-superblocks and __builtin_prefetch

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55153



             Bug #: 55153

           Summary: [4.8 Regression] ICE: in begin_move_insn, at

                    sched-ebb.c:205 with -fsched2-use-superblocks and

                    __builtin_prefetch

    Classification: Unclassified

           Product: gcc

           Version: 4.8.0

            Status: UNCONFIRMED

          Severity: normal

          Priority: P3

         Component: rtl-optimization

        AssignedTo: unassig...@gcc.gnu.org

        ReportedBy: zso...@seznam.cz





Created attachment 28583

  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28583

reduced testcase



Compiler output:

$ gcc -O -fsched2-use-superblocks -fschedule-insns2 testcase.c         

testcase.c: In function 'foo':

testcase.c:7:1: internal compiler error: in begin_move_insn, at sched-ebb.c:205

 }

 ^

0x110a092 begin_move_insn

        /mnt/svn/gcc-trunk/gcc/sched-ebb.c:205

0x10cc59c commit_schedule

        /mnt/svn/gcc-trunk/gcc/haifa-sched.c:5647

0x10cc59c schedule_block(basic_block_def**, void*)

        /mnt/svn/gcc-trunk/gcc/haifa-sched.c:6429

0x110a4f3 schedule_ebb(rtx_def*, rtx_def*, bool)

        /mnt/svn/gcc-trunk/gcc/sched-ebb.c:547

0x110b1f4 schedule_ebbs()

        /mnt/svn/gcc-trunk/gcc/sched-ebb.c:666

0x9b414c rest_of_handle_sched2

        /mnt/svn/gcc-trunk/gcc/sched-rgn.c:3565

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