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Re: [PATCH PING] Move edge_within_scc to ipa-utils.c


Ping.

Thanks,

Martin

On Wed, Sep 11, 2013 at 03:02:02PM +0200, Martin Jambor wrote:
> Hi,
> 
> edge_within_scc should really be a part of API accompanying
> ipa_reduced_postorder just like ipa_get_nodes_in_cycle and so this
> patch moves it to ipa-utils.c and gives it the ipa_ prefix.
> 
> Bootstrapped and tested on x86_64-linux.  OK for trunk?
> 
> Thanks,
> 
> Martin
> 
> 
> 
> 2013-09-10  Martin Jambor  <mjambor@suse.cz>
> 
> 	* ipa-utils.h (ipa_edge_within_scc): Declare.
> 	* ipa-cp.c (edge_within_scc): Moved...
> 	* ipa-utils.c (ipa_edge_within_scc): ...here.  Updated all callers.
> 
> Index: src/gcc/ipa-utils.c
> ===================================================================
> --- src.orig/gcc/ipa-utils.c
> +++ src/gcc/ipa-utils.c
> @@ -253,6 +253,22 @@ ipa_get_nodes_in_cycle (struct cgraph_no
>    return v;
>  }
>  
> +/* Return true iff the CS is an edge within a strongly connected component as
> +   computed by ipa_reduced_postorder.  */
> +
> +bool
> +ipa_edge_within_scc (struct cgraph_edge *cs)
> +{
> +  struct ipa_dfs_info *caller_dfs = (struct ipa_dfs_info *) cs->caller->symbol.aux;
> +  struct ipa_dfs_info *callee_dfs;
> +  struct cgraph_node *callee = cgraph_function_node (cs->callee, NULL);
> +
> +  callee_dfs = (struct ipa_dfs_info *) callee->symbol.aux;
> +  return (caller_dfs
> +	  && callee_dfs
> +	  && caller_dfs->scc_no == callee_dfs->scc_no);
> +}
> +
>  struct postorder_stack
>  {
>    struct cgraph_node *node;
> Index: src/gcc/ipa-utils.h
> ===================================================================
> --- src.orig/gcc/ipa-utils.h
> +++ src/gcc/ipa-utils.h
> @@ -42,6 +42,7 @@ int ipa_reduced_postorder (struct cgraph
>  			  bool (*ignore_edge) (struct cgraph_edge *));
>  void ipa_free_postorder_info (void);
>  vec<cgraph_node_ptr> ipa_get_nodes_in_cycle (struct cgraph_node *);
> +bool ipa_edge_within_scc (struct cgraph_edge *);
>  int ipa_reverse_postorder (struct cgraph_node **);
>  tree get_base_var (tree);
>  void ipa_merge_profiles (struct cgraph_node *dst,
> Index: src/gcc/ipa-cp.c
> ===================================================================
> --- src.orig/gcc/ipa-cp.c
> +++ src/gcc/ipa-cp.c
> @@ -287,22 +287,6 @@ ipa_lat_is_single_const (struct ipcp_lat
>      return true;
>  }
>  
> -/* Return true iff the CS is an edge within a strongly connected component as
> -   computed by ipa_reduced_postorder.  */
> -
> -static inline bool
> -edge_within_scc (struct cgraph_edge *cs)
> -{
> -  struct ipa_dfs_info *caller_dfs = (struct ipa_dfs_info *) cs->caller->symbol.aux;
> -  struct ipa_dfs_info *callee_dfs;
> -  struct cgraph_node *callee = cgraph_function_node (cs->callee, NULL);
> -
> -  callee_dfs = (struct ipa_dfs_info *) callee->symbol.aux;
> -  return (caller_dfs
> -	  && callee_dfs
> -	  && caller_dfs->scc_no == callee_dfs->scc_no);
> -}
> -
>  /* Print V which is extracted from a value in a lattice to F.  */
>  
>  static void
> @@ -957,7 +941,7 @@ add_value_to_lattice (struct ipcp_lattic
>    for (val = lat->values; val; val = val->next)
>      if (values_equal_for_ipcp_p (val->value, newval))
>        {
> -	if (edge_within_scc (cs))
> +	if (ipa_edge_within_scc (cs))
>  	  {
>  	    struct ipcp_value_source *s;
>  	    for (s = val->sources; s ; s = s->next)
> @@ -1030,7 +1014,7 @@ propagate_vals_accross_pass_through (str
>       are arithmetic functions with circular dependencies, there is infinite
>       number of them and we would just make lattices bottom.  */
>    if ((ipa_get_jf_pass_through_operation (jfunc) != NOP_EXPR)
> -      and edge_within_scc (cs))
> +      && ipa_edge_within_scc (cs))
>      ret = set_lattice_contains_variable (dest_lat);
>    else
>      for (src_val = src_lat->values; src_val; src_val = src_val->next)
> @@ -1061,7 +1045,7 @@ propagate_vals_accross_ancestor (struct
>    struct ipcp_value *src_val;
>    bool ret = false;
>  
> -  if (edge_within_scc (cs))
> +  if (ipa_edge_within_scc (cs))
>      return set_lattice_contains_variable (dest_lat);
>  
>    for (src_val = src_lat->values; src_val; src_val = src_val->next)
> @@ -2129,7 +2113,7 @@ propagate_constants_topo (struct topo_in
>  	  struct cgraph_edge *cs;
>  
>  	  for (cs = v->callees; cs; cs = cs->next_callee)
> -	    if (edge_within_scc (cs)
> +	    if (ipa_edge_within_scc (cs)
>  		&& propagate_constants_accross_call (cs))
>  	      push_node_to_stack (topo, cs->callee);
>  	  v = pop_node_from_stack (topo);
> @@ -2146,7 +2130,7 @@ propagate_constants_topo (struct topo_in
>  	    estimate_local_effects (v);
>  	    add_all_node_vals_to_toposort (v);
>  	    for (cs = v->callees; cs; cs = cs->next_callee)
> -	      if (!edge_within_scc (cs))
> +	      if (!ipa_edge_within_scc (cs))
>  		propagate_constants_accross_call (cs);
>  	  }
>        cycle_nodes.release ();
> @@ -3462,7 +3446,7 @@ spread_undeadness (struct cgraph_node *n
>    struct cgraph_edge *cs;
>  
>    for (cs = node->callees; cs; cs = cs->next_callee)
> -    if (edge_within_scc (cs))
> +    if (ipa_edge_within_scc (cs))
>        {
>  	struct cgraph_node *callee;
>  	struct ipa_node_params *info;
> @@ -3493,7 +3477,7 @@ has_undead_caller_from_outside_scc_p (st
>  					has_undead_caller_from_outside_scc_p,
>  					NULL, true))
>        return true;
> -    else if (!edge_within_scc (cs)
> +    else if (!ipa_edge_within_scc (cs)
>  	     && !IPA_NODE_REF (cs->caller)->node_dead)
>        return true;
>    return false;


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