[Bug tree-optimization/82485] New: [8 Regression] ICE in sp_valid_at, at config/i386/i386.c:13232

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82485

            Bug ID: 82485
           Summary: [8 Regression] ICE in sp_valid_at, at
                    config/i386/i386.c:13232
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: jakub at gcc dot gnu.org
  Target Milestone: ---

This one started with r253357:

$ gcc /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/pr82389.c  -O3
-mstackrealign -c
during RTL pass: pro_and_epilogue
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/pr82389.c: In function ‘foo’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/pr82389.c:13:1: internal
compiler error: in sp_valid_at, at config/i386/i386.c:13232
 }
 ^
0xf11a6b sp_valid_at
        ../../gcc/config/i386/i386.c:13232
0xf4057d ix86_expand_epilogue(int)
        ../../gcc/config/i386/i386.c:15660
0x1163f4f gen_epilogue()
        ../../gcc/config/i386/i386.md:13146
0xf20a18 target_gen_epilogue
        ../../gcc/config/i386/i386.md:12657
0x8f00d8 make_epilogue_seq
        ../../gcc/function.c:5916
0x8f01ec thread_prologue_and_epilogue_insns()
        ../../gcc/function.c:5998
0x8f0932 rest_of_handle_thread_prologue_and_epilogue
        ../../gcc/function.c:6488
0x8f0932 execute
        ../../gcc/function.c:6530