re PR rtl-optimization/57662 (ICE: SIGSEGV in code_motion_process_successors…

re PR rtl-optimization/57662 (ICE: SIGSEGV in code_motion_process_successors with -fschedule-insns2 -fselective-scheduling2)

gcc/
	PR rtl-optimization/57662
	* sel-sched.c (code_motion_path_driver): Do not mark already not
	existing blocks in the visiting bitmap.

testsuite/
	PR rtl-optimization/57662
	* g++.dg/pr57662.C: New test.

From-SVN: r207421

gcc/ChangeLog

 2014-02-03  Andrey Belevantsev  <abel@ispras.ru>
 
+	PR rtl-optimization/57662
+	* sel-sched.c (code_motion_path_driver): Do not mark already not
+	existing blocks in the visiting bitmap.
+
+2014-02-03  Andrey Belevantsev  <abel@ispras.ru>
+
 	* sel-sched-ir.c (sel_gen_insn_from_expr_after): Reset INSN_DELETED_P
 	on the insn being emitted.
 

gcc/sel-sched.c

@@ -6741,7 +6741,11 @@ code_motion_path_driver (insn_t insn, av_set_t orig_ops, ilist_t path,
      the numbering by creating bookkeeping blocks.  */
   if (removed_last_insn)
     insn = PREV_INSN (insn);
-  bitmap_set_bit (code_motion_visited_blocks, BLOCK_FOR_INSN (insn)->index);
+
+  /* If we have simplified the control flow and removed the first jump insn,
+     there's no point in marking this block in the visited blocks bitmap.  */
+  if (BLOCK_FOR_INSN (insn))
+    bitmap_set_bit (code_motion_visited_blocks, BLOCK_FOR_INSN (insn)->index);
   return true;
 }
 

gcc/testsuite/ChangeLog

+2014-02-03  Andrey Belevantsev  <abel@ispras.ru>
+
+	PR rtl-optimization/57662
+	* g++.dg/pr57662.C: New test.
+
 2014-02-02  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
 
 	* gcc.dg/vmx/3b-15.c: Remove special handling for little endian.