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| author | jason <jason@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-08-08 16:56:51 +0000 |
|---|---|---|
| committer | jason <jason@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-08-08 16:56:51 +0000 |
| commit | afce1f578206e99e0b3a1774728304629f42ada0 (patch) | |
| tree | aebee6fdf45e18a5266d6c228d8bc47d74e8f54e /gcc/alias.c | |
| parent | 483f30d9e207f75b774dddf9a1b5422b794cfb3a (diff) | |
| download | gcc-afce1f578206e99e0b3a1774728304629f42ada0.tar.gz | |
* alias.c (get_alias_set): Return a previously calculated
alias set for a VAR_DECL.
* function.c (gen_mem_addressof): Calculate the alias set before
touching the RTL.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@44720 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/alias.c')
| -rw-r--r-- | gcc/alias.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/alias.c b/gcc/alias.c index a1204a2eac9..a79589f0dcc 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -526,6 +526,13 @@ get_alias_set (t) return 0; } + /* If we've already determined the alias set for this decl, just + return it. This is necessary for C++ anonymous unions, whose + component variables don't look like union members (boo!). */ + if (TREE_CODE (t) == VAR_DECL + && DECL_RTL_SET_P (t) && GET_CODE (DECL_RTL (t)) == MEM) + return MEM_ALIAS_SET (DECL_RTL (t)); + /* Give the language another chance to do something special. */ if (orig_t != t && (set = lang_get_alias_set (t)) != -1) |