[Bug middle-end/52306] [4.8 regression] ICE in cselib_record_set, at cselib.c:2158

[schwab@linux-m68k.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52306

--- Comment #31 from Andreas Schwab <schwab@linux-m68k.org> ---
Created attachment 32175
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32175&action=edit
Testcase from jumpnbump

After backporting the patch to 4.8 there is still a package that fails with the
same error, though it doesn't fail with 4.9.

$ gcc/xgcc -B gcc/ -O -fomit-frame-pointer filter.i 
filter.i: In function ‘do_scale2x’:
filter.i:202:1: internal compiler error: in cselib_record_set, at cselib.c:2373
 }
 ^
0x5c092e cselib_record_set
        ../../gcc/gcc/cselib.c:2373
0x5c092e cselib_record_sets
        ../../gcc/gcc/cselib.c:2590
0x5c0c8f cselib_process_insn(rtx_def*)
        ../../gcc/gcc/cselib.c:2665
0x753c27 reload_cse_regs_1
        ../../gcc/gcc/postreload.c:222
0x75426b reload_cse_regs
        ../../gcc/gcc/postreload.c:68
0x75426b rest_of_handle_postreload
        ../../gcc/gcc/postreload.c:2287