This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

[PATCH, PR63307] Fix generation of new declarations in random order


Hi!

The following patch does fix random order for new decls generation during Cilk_spawn generation.
As Jakub suggested in the PR first we deal with vectors, then sort them and only then perform necessary generation of new decls.

Bootstrapped and regtested on trunk/4.9.
For trunk I couldn't check with COMPARE_DEBUG since building fails somewhere else. 
For 4.9 COMPARE_DEBUG building is ok.

Is it ok for trunk and backport into 4.9?


c-family/Changelog:

2014-10-03  Igor Zamyatin  <igor.zamyatin@intel.com>
 
	PR c/63307
	* cilk.c: Include vec.h.
	(struct cilk_decls): New structure.
	(wrapper_parm_cb): Split this function to...
	(fill_decls_vec): ...this...
	(create_parm_list): ...and this.
	(compare_decls): New function.
	(for_local_cb): Remove.
	(wrapper_local_cb): Ditto.
	(build_wrapper_type): For now first traverse and fill vector of
	declarations then sort it and then deal with sorted vector.
	(cilk_outline): Ditto.
	(declare_one_free_variable): Ditto.



diff --git a/gcc/c-family/cilk.c b/gcc/c-family/cilk.c
index 20b3432..e7a1c6a 100644
--- a/gcc/c-family/cilk.c
+++ b/gcc/c-family/cilk.c
@@ -35,6 +35,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "toplev.h" 
 #include "cgraph.h"
 #include "diagnostic.h"
+#include "vec.h"
 #include "cilk.h"
 
 enum add_variable_type {
@@ -332,17 +333,36 @@ create_cilk_helper_decl (struct wrapper_data *wd)
   return fndecl;
 }
 
-/* A function used by walk tree to find wrapper parms.  */
+struct cilk_decls
+{
+  tree key;
+  tree *val;
+};
+
+/* A function used by traversal to fill vector of decls for further work.  */
 
 bool
-wrapper_parm_cb (tree const &key0, tree *val0, wrapper_data *wd)
+fill_decls_vec (tree const &key0, tree *val0, auto_vec<struct cilk_decls> *v)
+{
+  tree t1 = key0;
+  struct cilk_decls dp;
+
+  dp.key = t1;
+  dp.val = val0;
+  v->safe_push (dp);
+  return true;
+}
+
+/* Function that actually creates necessary parm lists.  */
+
+static void
+create_parm_list (struct wrapper_data *wd, tree *val0, tree arg)
 {
-  tree arg = key0;
   tree val = *val0;
   tree parm;
 
   if (val == error_mark_node || val == arg)
-    return true;
+    return;
 
   if (TREE_CODE (val) == PAREN_EXPR)
     {
@@ -360,7 +380,7 @@ wrapper_parm_cb (tree const &key0, tree *val0, wrapper_data *wd)
        }
       else
        arg = build1 (ADDR_EXPR, build_pointer_type (TREE_TYPE (arg)), arg);
-
+
       val = TREE_OPERAND (val, 0);
       *val0 = val;
       gcc_assert (TREE_CODE (val) == INDIRECT_REF);
@@ -371,9 +391,19 @@ wrapper_parm_cb (tree const &key0, tree *val0, wrapper_data *wd)
     parm = val;
   TREE_CHAIN (parm) = wd->parms;
   wd->parms = parm;
-  wd->argtypes = tree_cons (NULL_TREE, TREE_TYPE (parm), wd->argtypes); 
-  wd->arglist = tree_cons (NULL_TREE, arg, wd->arglist); 
-  return true;
+  wd->argtypes = tree_cons (NULL_TREE, TREE_TYPE (parm), wd->argtypes);
+  wd->arglist = tree_cons (NULL_TREE, arg, wd->arglist);
+}
+
+/* Sorting decls in a vector.  */
+
+static int
+compare_decls (const void *a, const void *b)
+{
+  const struct cilk_decls* t1 = (const struct cilk_decls*) a;
+  const struct cilk_decls* t2 = (const struct cilk_decls*) b;
+
+  return DECL_UID (t1->key) > DECL_UID (t2->key);
 }
 
 /* This function is used to build a wrapper of a certain type.  */
@@ -381,13 +411,21 @@ wrapper_parm_cb (tree const &key0, tree *val0, wrapper_data *wd)
 static void
 build_wrapper_type (struct wrapper_data *wd)
 {
+  unsigned int j;
+  struct cilk_decls * c;
+  auto_vec<struct cilk_decls> vd;
   wd->arglist = NULL_TREE;
   wd->parms = NULL_TREE;
   wd->argtypes = void_list_node;
 
-  wd->decl_map->traverse<wrapper_data *, wrapper_parm_cb> (wd);
+  wd->decl_map->traverse<auto_vec<struct cilk_decls> *, fill_decls_vec> (&vd);
   gcc_assert (wd->type != CILK_BLOCK_FOR);
 
+  vd.qsort (compare_decls);
+
+  FOR_EACH_VEC_ELT (vd, j, c)
+   create_parm_list (wd, c->val, c->key);
+
   /* Now build a function.
      Its return type is void (all side effects are via explicit parameters).
      Its parameters are WRAPPER_PARMS with type WRAPPER_TYPES.
@@ -448,41 +486,19 @@ copy_decl_for_cilk (tree decl, copy_body_data *id)
     }
 }
 
-/* Copy all local variables.  */
-
-bool
-for_local_cb (tree const &k, tree *vp, copy_body_data *id)
-{
-  tree v = *vp;
-
-  if (v == error_mark_node)
-    *vp = copy_decl_no_change (k, id);
-  return true;
-}
-
-/* Copy all local declarations from a _Cilk_spawned function's body.  */
-
-bool
-wrapper_local_cb (tree const &key, tree *vp, copy_body_data *id)
-{
-  tree val = *vp;
-
-  if (val == error_mark_node)
-    *vp = copy_decl_for_cilk (key, id);
-
-  return true;
-}
-
 /* Alter a tree STMT from OUTER_FN to form the body of INNER_FN.  */
 
 void
 cilk_outline (tree inner_fn, tree *stmt_p, void *w)
 {
   struct wrapper_data *wd = (struct wrapper_data *) w;
-  const tree outer_fn = wd->context;         
+  const tree outer_fn = wd->context;
   const bool nested = (wd->type == CILK_BLOCK_FOR);
   copy_body_data id;
   bool throws;
+  auto_vec<struct cilk_decls> vd;
+  unsigned int j;
+  struct cilk_decls * c;
 
   DECL_STATIC_CHAIN (outer_fn) = 1;
 
@@ -508,11 +524,13 @@ cilk_outline (tree inner_fn, tree *stmt_p, void *w)
 
   insert_decl_map (&id, wd->block, DECL_INITIAL (inner_fn));
 
+  wd->decl_map->traverse<auto_vec<struct cilk_decls> *, fill_decls_vec> (&vd);
+  vd.qsort (compare_decls);
   /* We don't want the private variables any more.  */
-  if (nested)
-    wd->decl_map->traverse<copy_body_data *, for_local_cb> (&id);
-  else
-    wd->decl_map->traverse<copy_body_data *, wrapper_local_cb> (&id);
+  FOR_EACH_VEC_ELT (vd, j, c)
+   if (*(c->val) == error_mark_node)
+     *(c->val) = nested ? copy_decl_no_change (c->key, &id)
+                       : copy_decl_for_cilk (c->key, &id);
 
   walk_tree (stmt_p, copy_tree_body_r, (void *) &id, NULL);
 
@@ -617,7 +635,7 @@ free_wd (struct wrapper_data *wd)
 */
 
 bool
-declare_one_free_variable (tree const &var0, tree *map0, wrapper_data &)
+declare_one_free_variable (tree var0, tree *map0)
 {
   const_tree var = var0;
   tree map = *map0;
@@ -690,6 +708,9 @@ create_cilk_wrapper (tree exp, tree *args_out)
 {
   struct wrapper_data wd;
   tree fndecl;
+  unsigned int j;
+  struct cilk_decls * c;
+  auto_vec<struct cilk_decls> vd;
 
   init_wd (&wd, CILK_BLOCK_SPAWN);
 
@@ -710,7 +731,11 @@ create_cilk_wrapper (tree exp, tree *args_out)
     }
   else
     extract_free_variables (exp, &wd, ADD_READ);
-  wd.decl_map->traverse<wrapper_data &, declare_one_free_variable> (wd);
+  wd.decl_map->traverse<auto_vec<struct cilk_decls> *, fill_decls_vec> (&vd);
+  vd.qsort (compare_decls);
+  FOR_EACH_VEC_ELT (vd, j, c)
+   declare_one_free_variable (c->key, c->val);
+
   wd.block = TREE_BLOCK (exp);
   if (!wd.block)
     wd.block = DECL_INITIAL (current_function_decl);


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]