[Bug target/81766] [7/8 Regression] ICE in maybe_add_or_update_dep_1, at sched-deps.c:924 caused by r250815

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81766

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Sadly:
--- gcc/config/i386/i386.c.jj   2017-08-07 18:50:10.000000000 +0200
+++ gcc/config/i386/i386.c      2017-08-08 14:33:06.462836529 +0200
@@ -8846,6 +8846,10 @@ ix86_init_large_pic_reg (unsigned int tm
   emit_insn (gen_set_got_offset_rex64 (tmp_reg, label));
   emit_insn (ix86_gen_add3 (pic_offset_table_rtx,
                            pic_offset_table_rtx, tmp_reg));
+  const char *name = LABEL_NAME (label);
+  PUT_CODE (label, NOTE);
+  NOTE_KIND (label) = NOTE_INSN_DELETED_LABEL;
+  NOTE_DELETED_LABEL_NAME (label) = name;
 }

 /* Create and initialize PIC register if required.  */

doesn't work, because cselib is unhappy to see NOTE_INSN_DELETED_LABEL
referenced in an insn.