re PR rtl-optimization/32372 (ICE in df_refs_verify, at df-scan.c:4065)

	PR middle-end/32372
	* cse.c (cse_insn): Avoid invalid sharing in between register note and
	the insn pattern.

From-SVN: r126122

gcc/ChangeLog

+2007-06-29 Jan Hubicka  <jh@suse.cz>
+
+	PR middle-end/32372
+	* cse.c (cse_insn): Avoid invalid sharing in between register note and
+	the insn pattern.
+
 2007-06-29 Anatoly Sokolov <aesok@post.ru>
 
 	PR target/32335

gcc/cse.c

@@ -4181,7 +4181,7 @@ cse_insn (rtx insn, rtx libcall_insn)
       canon_reg (XEXP (tem, 0), insn);
       apply_change_group ();
       src_eqv = fold_rtx (XEXP (tem, 0), insn);
-      XEXP (tem, 0) = src_eqv;
+      XEXP (tem, 0) = copy_rtx (src_eqv);
       df_notes_rescan (insn);
     }
 
@@ -7012,7 +7012,7 @@ struct tree_opt_pass pass_cse =
   0,                                    /* properties_provided */
   0,                                    /* properties_destroyed */
   0,                                    /* todo_flags_start */
-  TODO_df_finish |
+  TODO_df_finish | TODO_verify_rtl_sharing |
   TODO_dump_func |
   TODO_ggc_collect |
   TODO_verify_flow,                     /* todo_flags_finish */
@@ -7070,7 +7070,7 @@ struct tree_opt_pass pass_cse2 =
   0,                                    /* properties_provided */
   0,                                    /* properties_destroyed */
   0,                                    /* todo_flags_start */
-  TODO_df_finish |
+  TODO_df_finish | TODO_verify_rtl_sharing |
   TODO_dump_func |
   TODO_ggc_collect |
   TODO_verify_flow,                     /* todo_flags_finish */

gcc/testsuite/ChangeLog

+2007-06-29  Jan Hubicka  <jh@suse.cz>
+
+	PR middle-end/32372
+	* gcc.c-torture/compile/pr32372.c: new.
+
 2007-06-29  Daniel Franke  <franke.daniel@gmail.com>
 
 	* gfortran.dg/operator_3.f90: New test.

gcc/testsuite/gcc.c-torture/compile/pr32372.c

+typedef struct AVCodecContext
+{
+  int flags;
+  void *priv_data;
+  char codec_name[32];
+}
+AVCodecContext;
+typedef struct ScanTable
+{
+  int obmc;
+  int umvplus;
+  int h263_aic;
+}
+MpegEncContext;
+MPV_encode_init (AVCodecContext *avctx)
+{
+  MpegEncContext *s = avctx->priv_data;
+  s->umvplus = (avctx->flags & 0x02000000) ? 1 : 0;
+  s->h263_aic = (avctx->flags & 0x01000000) ? 1 : 0;
+  s->h263_aic = s->obmc || s->umvplus;
+}