Gator cleanup

From-SVN: r174848

gcc/ChangeLog

+2011-06-09  David Li  <davidxl@google.com>
+
+	* tree-complex.c (tree_lower_complex): Gate cleanup.
+	* tree-stdarg.c (check_all_va_list_escapes): Ditto.
+	(execute_optimize_stdarg): Ditto.
+	* tree-eh.c (execute_lower_eh_dispatch): Ditto.
+	(execute_cleanup_eh_1): Ditto.
+	(execute_cleanup_eh): Ditto.
+	* gcse.c (gate_rtl_pre): Ditto.
+	(execute_rtl_pre): Ditto.
+	* except.c (finish_eh_generation): Ditto.
+	(convert_to_eh_region_ranges): Ditto.
+	* cprop.c (one_cprop_pass): Ditto.
+
+
 2011-06-09  Bernd Schmidt  <bernds@codesourcery.com>
 
 	PR target/48673

gcc/cprop.c

@@ -1843,15 +1843,17 @@ one_cprop_pass (void)
 static bool
 gate_rtl_cprop (void)
 {
-  return optimize > 0 && flag_gcse
-    && !cfun->calls_setjmp
-    && dbg_cnt (cprop);
+  return optimize > 0 && flag_gcse;
 }
 
 static unsigned int
 execute_rtl_cprop (void)
 {
   int changed;
+
+  if (cfun->calls_setjmp || !dbg_cnt (cprop))
+    return 0;
+
   delete_unreachable_blocks ();
   df_set_flags (DF_LR_RUN_DCE);
   df_analyze ();
@@ -1882,4 +1884,3 @@ struct rtl_opt_pass pass_rtl_cprop =
   TODO_verify_flow | TODO_ggc_collect   /* todo_flags_finish */
  }
 };
-

gcc/except.c

@@ -1440,14 +1440,17 @@ finish_eh_generation (void)
 static bool
 gate_handle_eh (void)
 {
-  /* Nothing to do if no regions created.  */
-  return cfun->eh->region_tree != NULL;
+  return true;
 }
 
 /* Complete generation of exception handling code.  */
 static unsigned int
 rest_of_handle_eh (void)
 {
+  /* Nothing to do if no regions created.  */
+  if (cfun->eh->region_tree == NULL)
+    return 0;
+
   finish_eh_generation ();
   cleanup_cfg (CLEANUP_NO_INSN_DEL);
   return 0;
@@ -2392,6 +2395,9 @@ convert_to_eh_region_ranges (void)
   int min_labelno = 0, max_labelno = 0;
   int saved_call_site_base = call_site_base;
 
+  if (cfun->eh->region_tree == NULL)
+    return 0;
+
   crtl->eh.action_record_data = VEC_alloc (uchar, gc, 64);
 
   ar_hash = htab_create (31, action_record_hash, action_record_eq, free);
@@ -2643,8 +2649,6 @@ static bool
 gate_convert_to_eh_region_ranges (void)
 {
   /* Nothing to do for SJLJ exceptions or if no regions created.  */
-  if (cfun->eh->region_tree == NULL)
-    return false;
   if (targetm.except_unwind_info (&global_options) == UI_SJLJ)
     return false;
   return true;

gcc/gcse.c

@@ -3713,15 +3713,17 @@ static bool
 gate_rtl_pre (void)
 {
   return optimize > 0 && flag_gcse
-    && !cfun->calls_setjmp
-    && optimize_function_for_speed_p (cfun)
-    && dbg_cnt (pre);
+         && optimize_function_for_speed_p (cfun);
 }
 
 static unsigned int
 execute_rtl_pre (void)
 {
   int changed;
+
+  if (cfun->calls_setjmp || !dbg_cnt (pre))
+    return 0;
+
   delete_unreachable_blocks ();
   df_analyze ();
   changed = one_pre_gcse_pass ();
@@ -3735,18 +3737,20 @@ static bool
 gate_rtl_hoist (void)
 {
   return optimize > 0 && flag_gcse
-    && !cfun->calls_setjmp
-    /* It does not make sense to run code hoisting unless we are optimizing
-       for code size -- it rarely makes programs faster, and can make then
-       bigger if we did PRE (when optimizing for space, we don't run PRE).  */
-    && optimize_function_for_size_p (cfun)
-    && dbg_cnt (hoist);
+        /* It does not make sense to run code hoisting unless we are optimizing
+         for code size -- it rarely makes programs faster, and can make then
+         bigger if we did PRE (when optimizing for space, we don't run PRE).  */
+        && optimize_function_for_size_p (cfun);
 }
 
 static unsigned int
 execute_rtl_hoist (void)
 {
   int changed;
+
+  if (cfun->calls_setjmp || !dbg_cnt (hoist))
+      return 0;
+
   delete_unreachable_blocks ();
   df_analyze ();
   changed = one_code_hoisting_pass ();
@@ -3799,4 +3803,3 @@ struct rtl_opt_pass pass_rtl_hoist =
 };
 
 #include "gt-gcse.h"
-

gcc/tree-complex.c

@@ -1569,6 +1569,11 @@ tree_lower_complex (void)
   gimple_stmt_iterator gsi;
   basic_block bb;
 
+  /* With errors, normal optimization passes are not run.  If we don't
+     lower complex operations at all, rtl expansion will abort.  */
+  if (cfun->curr_properties & PROP_gimple_lcx)
+    return 0;
+
   if (!init_dont_simulate_again ())
     return 0;
 
@@ -1634,9 +1639,7 @@ struct gimple_opt_pass pass_lower_complex =
 static bool
 gate_no_optimization (void)
 {
-  /* With errors, normal optimization passes are not run.  If we don't
-     lower complex operations at all, rtl expansion will abort.  */
-  return !(cfun->curr_properties & PROP_gimple_lcx);
+  return true;
 }
 
 struct gimple_opt_pass pass_lower_complex_O0 =

gcc/tree-eh.c

@@ -3234,6 +3234,9 @@ execute_lower_eh_dispatch (void)
   bool any_rewritten = false;
   bool redirected = false;
 
+  if (cfun->eh->region_tree == NULL)
+    return 0;
+
   assign_filter_values ();
 
   FOR_EACH_BB (bb)
@@ -3254,7 +3257,7 @@ execute_lower_eh_dispatch (void)
 static bool
 gate_lower_eh_dispatch (void)
 {
-  return cfun->eh->region_tree != NULL;
+  return true;
 }
 
 struct gimple_opt_pass pass_lower_eh_dispatch =
@@ -3983,8 +3986,12 @@ execute_cleanup_eh_1 (void)
 static unsigned int
 execute_cleanup_eh (void)
 {
-  int ret = execute_cleanup_eh_1 ();
+  int ret;
 
+  if (cfun->eh == NULL || cfun->eh->region_tree == NULL)
+    return 0;
+
+  ret = execute_cleanup_eh_1 ();
   /* If the function no longer needs an EH personality routine
      clear it.  This exposes cross-language inlining opportunities
      and avoids references to a never defined personality routine.  */
@@ -3998,7 +4005,7 @@ execute_cleanup_eh (void)
 static bool
 gate_cleanup_eh (void)
 {
-  return cfun->eh != NULL && cfun->eh->region_tree != NULL;
+  return true;
 }
 
 struct gimple_opt_pass pass_cleanup_eh = {

gcc/tree-stdarg.c

@@ -627,8 +627,7 @@ check_all_va_list_escapes (struct stdarg_info *si)
 static bool
 gate_optimize_stdarg (void)
 {
-  /* This optimization is only for stdarg functions.  */
-  return cfun->stdarg != 0;
+  return true;
 }
 
 
@@ -645,6 +644,10 @@ execute_optimize_stdarg (void)
   const char *funcname = NULL;
   tree cfun_va_list;
 
+  /* This optimization is only for stdarg functions.  */
+  if (cfun->stdarg == 0)
+    return 0;
+
   cfun->va_list_gpr_size = 0;
   cfun->va_list_fpr_size = 0;
   memset (&si, 0, sizeof (si));