re PR target/77834 (ICE: in make_decl_rtl, at varasm.c:1311 with -O -ftree-pre…

re PR target/77834 (ICE: in make_decl_rtl, at varasm.c:1311 with -O -ftree-pre -mstringop-strategy=libcall)

	PR target/77834
	* dse.c (dse_step5): Call scan_reads even if just
	insn_info->frame_read.  Improve and fix dump file messages.

From-SVN: r241917

gcc/ChangeLog

 2016-11-07  Jakub Jelinek  <jakub@redhat.com>
 
+	PR target/77834
+	* dse.c (dse_step5): Call scan_reads even if just
+	insn_info->frame_read.  Improve and fix dump file messages.
+
 	PR target/78227
 	* config/i386/i386.c (ix86_expand_sse_cmp): Force dest into
 	cmp_mode argument even for -O0 if cmp_mode != mode and maskcmp.

gcc/dse.c

@@ -3298,12 +3298,19 @@ dse_step5 (void)
 		  bitmap_clear (v);
 		}
 	      else if (insn_info->read_rec
-                       || insn_info->non_frame_wild_read)
+		       || insn_info->non_frame_wild_read
+		       || insn_info->frame_read)
 		{
-		  if (dump_file && !insn_info->non_frame_wild_read)
-		    fprintf (dump_file, "regular read\n");
-                  else if (dump_file && (dump_flags & TDF_DETAILS))
-		    fprintf (dump_file, "non-frame wild read\n");
+		  if (dump_file && (dump_flags & TDF_DETAILS))
+		    {
+		      if (!insn_info->non_frame_wild_read
+			  && !insn_info->frame_read)
+			fprintf (dump_file, "regular read\n");
+		      if (insn_info->non_frame_wild_read)
+			fprintf (dump_file, "non-frame wild read\n");
+		      if (insn_info->frame_read)
+			fprintf (dump_file, "frame read\n");
+		    }
 		  scan_reads (insn_info, v, NULL);
 		}
 	    }