spu.c (asm_file_start): Only reset flag_var_tracking if branch-hint optimization will be performed.

	* config/spu/spu.c (asm_file_start): Only reset flag_var_tracking
	if branch-hint optimization will be performed.

From-SVN: r168444

gcc/ChangeLog

+2011-01-03  Ulrich Weigand  <Ulrich.Weigand@de.ibm.com>
+
+	* config/spu/spu.c (asm_file_start): Only reset flag_var_tracking
+	if branch-hint optimization will be performed.
+
 2011-01-03  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/47148

gcc/config/spu/spu.c

@@ -7014,9 +7014,17 @@ static void
 asm_file_start (void)
 {
   /* Variable tracking should be run after all optimizations which
-     change order of insns.  It also needs a valid CFG. */
-  spu_flag_var_tracking = flag_var_tracking;
-  flag_var_tracking = 0;
+     change order of insns.  It also needs a valid CFG.  Therefore,
+     *if* we make nontrivial changes in machine-dependent reorg,
+     run variable tracking after those.  However, if we do not run
+     our machine-dependent reorg pass, we must still run the normal
+     variable tracking pass (or else we will ICE in final since
+     debug insns have not been removed).  */
+  if (TARGET_BRANCH_HINTS && optimize)
+    {
+      spu_flag_var_tracking = flag_var_tracking;
+      flag_var_tracking = 0;
+    }
 
   default_file_start ();
 }