[Bug target/48273] New: [4.6/4.7 Regression] ICE: in create_copy_of_insn_rtx, at sel-sched-ir.c:5604 with -fsel-sched-pipelining -fselective-scheduling2 -march=core2

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48273



           Summary: [4.6/4.7 Regression] ICE: in create_copy_of_insn_rtx,

                    at sel-sched-ir.c:5604 with -fsel-sched-pipelining

                    -fselective-scheduling2 -march=core2

           Product: gcc

           Version: 4.7.0

            Status: UNCONFIRMED

          Severity: normal

          Priority: P3

         Component: target

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

        ReportedBy: zso...@seznam.cz

              Host: x86_64-pc-linux-gnu

            Target: x86_64-pc-linux-gnu





Created attachment 23769

  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23769

reduced testcase



Compiler output:

$ gcc -O -fschedule-insns2 -fsel-sched-pipelining -fselective-scheduling2

-funroll-all-loops -march=core2 testcase.C

testcase.C: In function 'void foo()':

testcase.C:7:1: internal compiler error: in create_copy_of_insn_rtx, at

sel-sched-ir.c:5604

Please submit a full bug report,

with preprocessed source if appropriate.

See <http://gcc.gnu.org/bugs.html> for instructions.



Tested revisions:

r171337 - crash

4.6 r170955 - crash

4.5 r170955 - crash