From 152279c4d235542c4948259e469b1b4faebdc596 Mon Sep 17 00:00:00 2001 From: Kazu Hirata Date: Mon, 29 May 2006 13:47:00 +0000 Subject: [PATCH] tree-flow.h: Remove the prototype for add_type_alias. * tree-flow.h: Remove the prototype for add_type_alias. * tree-ssa-alias.c (add_type_alias): Remove. From-SVN: r114197 --- gcc/ChangeLog | 3 ++ gcc/tree-flow.h | 1 - gcc/tree-ssa-alias.c | 87 ---------------------------------------------------- 3 files changed, 3 insertions(+), 88 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 726401b..b74289a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -5,6 +5,9 @@ * config/bfin/bfin.h (PARM_BOUNDRY, STACK_BOUNDRY): Remove. + * tree-flow.h: Remove the prototype for add_type_alias. + * tree-ssa-alias.c (add_type_alias): Remove. + 2006-05-28 Kazu Hirata * cfgcleanup.c, cfgexpand.c, cgraphunit.c, config/arm/arm.c, diff --git a/gcc/tree-flow.h b/gcc/tree-flow.h index 0dad98b..6a953ab 100644 --- a/gcc/tree-flow.h +++ b/gcc/tree-flow.h @@ -667,7 +667,6 @@ extern void debug_points_to_info_for (tree); extern bool may_be_aliased (tree); extern bool is_aliased_with (tree, tree); extern struct ptr_info_def *get_ptr_info (tree); -extern void add_type_alias (tree, tree); extern void new_type_alias (tree, tree); extern void count_uses_and_derefs (tree, tree, unsigned *, unsigned *, bool *); static inline subvar_t get_subvars_for_var (tree); diff --git a/gcc/tree-ssa-alias.c b/gcc/tree-ssa-alias.c index 121f645..2da4e61 100644 --- a/gcc/tree-ssa-alias.c +++ b/gcc/tree-ssa-alias.c @@ -2687,93 +2687,6 @@ is_aliased_with (tree tag, tree sym) } -/* Add VAR to the list of may-aliases of PTR's symbol tag. If PTR - doesn't already have a symbol tag, create one. */ - -void -add_type_alias (tree ptr, tree var) -{ - VEC(tree, gc) *aliases; - tree tag, al; - var_ann_t ann = var_ann (ptr); - subvar_t svars; - VEC (tree, heap) *varvec = NULL; - unsigned i; - - if (ann->symbol_mem_tag == NULL_TREE) - { - tree q = NULL_TREE; - tree tag_type = TREE_TYPE (TREE_TYPE (ptr)); - HOST_WIDE_INT tag_set = get_alias_set (tag_type); - safe_referenced_var_iterator rvi; - - /* PTR doesn't have a symbol tag, create a new one and add VAR to - the new tag's alias set. - - FIXME, This is slower than necessary. We need to determine - whether there is another pointer Q with the same alias set as - PTR. This could be sped up by having symbol tags associated - with types. */ - FOR_EACH_REFERENCED_VAR_SAFE (q, varvec, rvi) - { - if (POINTER_TYPE_P (TREE_TYPE (q)) - && tag_set == get_alias_set (TREE_TYPE (TREE_TYPE (q)))) - { - /* Found another pointer Q with the same alias set as - the PTR's pointed-to type. If Q has a symbol tag, use - it. Otherwise, create a new memory tag for PTR. */ - var_ann_t ann1 = var_ann (q); - if (ann1->symbol_mem_tag) - ann->symbol_mem_tag = ann1->symbol_mem_tag; - else - ann->symbol_mem_tag = create_memory_tag (tag_type, true); - goto found_tag; - } - } - - /* Couldn't find any other pointer with a symbol tag we could use. - Create a new memory tag for PTR. */ - ann->symbol_mem_tag = create_memory_tag (tag_type, true); - } - -found_tag: - /* If VAR is not already PTR's symbol tag, add it to the may-alias set - for PTR's symbol tag. */ - gcc_assert (!MTAG_P (var)); - tag = ann->symbol_mem_tag; - - /* If VAR has subvars, add the subvars to the tag instead of the - actual var. */ - if (var_can_have_subvars (var) - && (svars = get_subvars_for_var (var))) - { - subvar_t sv; - for (sv = svars; sv; sv = sv->next) - add_may_alias (tag, sv->var); - } - else - add_may_alias (tag, var); - - /* TAG and its set of aliases need to be marked for renaming. */ - mark_sym_for_renaming (tag); - if ((aliases = var_ann (tag)->may_aliases) != NULL) - { - for (i = 0; VEC_iterate (tree, aliases, i, al); i++) - mark_sym_for_renaming (al); - } - - /* If we had grouped aliases, VAR may have aliases of its own. Mark - them for renaming as well. Other statements referencing the - aliases of VAR will need to be updated. */ - if ((aliases = var_ann (var)->may_aliases) != NULL) - { - for (i = 0; VEC_iterate (tree, aliases, i, al); i++) - mark_sym_for_renaming (al); - } - VEC_free (tree, heap, varvec); -} - - /* Create a new symbol tag for PTR. Construct the may-alias list of this type tag so that it has the aliasing of VAR. -- 2.7.4