[Bug target/80357] New: [7 Regression] ICE in model_update_limit_points_in_group, at haifa-sched.c:1982 on powerpc64le-linux-gnu

[doko at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80357

            Bug ID: 80357
           Summary: [7 Regression] ICE in
                    model_update_limit_points_in_group, at
                    haifa-sched.c:1982 on powerpc64le-linux-gnu
           Product: gcc
           Version: 7.0.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doko at gcc dot gnu.org
  Target Milestone: ---

seen on trunk 20170407 on powerpc64le-linux-gnu, fails with -O3, works with -O2

$ gcc -c -O3 -msecure-plt igb_ethdev.i 
/<<PKGBUILDDIR>>/drivers/net/e1000/igb_ethdev.c: In function
'eth_igb_rss_reta_query':
/<<PKGBUILDDIR>>/drivers/net/e1000/igb_ethdev.c:3374:1: internal compiler
error: in model_update_limit_points_in_group, at haifa-sched.c:1982
0x10eadd3f model_update_limit_points_in_group
        ../../src/gcc/haifa-sched.c:1982
0x10eadd3f model_update_limit_points
        ../../src/gcc/haifa-sched.c:1993
0x10eadd3f schedule_insn
        ../../src/gcc/haifa-sched.c:4077
0x10eb276b schedule_block(basic_block_def**, void*)
        ../../src/gcc/haifa-sched.c:6944
0x106e7c13 schedule_region
        ../../src/gcc/sched-rgn.c:3169
0x106e7c13 schedule_insns()
        ../../src/gcc/sched-rgn.c:3506
0x106e8087 schedule_insns()
        ../../src/gcc/sched-rgn.c:3491
0x106e8087 rest_of_handle_sched
        ../../src/gcc/sched-rgn.c:3710
0x106e8087 execute
        ../../src/gcc/sched-rgn.c:3818
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