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| author | dje <dje@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-03-11 18:01:54 +0000 |
|---|---|---|
| committer | dje <dje@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-03-11 18:01:54 +0000 |
| commit | c5d44e2fbe97b15dc79f213a19223f75c22bcf8e (patch) | |
| tree | 0f32dcc7135957b2a24b097ca12ea0850be9f8be /gcc/alias.c | |
| parent | 6adfb8f86caa33f61d6ff2aa1aa81f3768beabbf (diff) | |
| download | gcc-c5d44e2fbe97b15dc79f213a19223f75c22bcf8e.tar.gz | |
2002-03-06 Dan Nicolaescu <dann@ics.uci.edu>
Daniel Berlin <dan@dberlin.org>
C++ alias analysis improvement.
* alias.c (record_component_aliases): Record aliases for base
classes too.
* cp/cp-lang.c (ok_to_generate_alias_set_for_type): New function.
(cxx_get_alias_set): Use it.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@50587 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/alias.c')
| -rw-r--r-- | gcc/alias.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/alias.c b/gcc/alias.c index 5d017eb73c9..9b46fe1be52 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -679,6 +679,17 @@ record_component_aliases (type) case RECORD_TYPE: case UNION_TYPE: case QUAL_UNION_TYPE: + /* Recursively record aliases for the base classes, if there are any */ + if (TYPE_BINFO (type) != NULL && TYPE_BINFO_BASETYPES (type) != NULL) + { + int i; + for (i = 0; i < TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type)); i++) + { + tree binfo = TREE_VEC_ELT (TYPE_BINFO_BASETYPES (type), i); + record_alias_subset (superset, + get_alias_set (BINFO_TYPE (binfo))); + } + } for (field = TYPE_FIELDS (type); field != 0; field = TREE_CHAIN (field)) if (TREE_CODE (field) == FIELD_DECL && ! DECL_NONADDRESSABLE_P (field)) record_alias_subset (superset, get_alias_set (TREE_TYPE (field))); |