diff options
| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-11-09 19:31:45 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-11-09 19:31:45 +0000 |
| commit | ba4876390b4cb6b94e4ee64d6646fee7aa43b556 (patch) | |
| tree | d0452c9d439eb92c86bdb032f5caa94bb5be505c /gcc/cfgexpand.c | |
| parent | df4ae4c4516593909d0074d4ddea3da9c0243fda (diff) | |
| download | gcc-ba4876390b4cb6b94e4ee64d6646fee7aa43b556.tar.gz | |
PR target/43808
* cfgexpand.c (partition_stack_vars): Call
update_alias_info_with_stack_vars unconditionally.
(update_alias_info_with_stack_vars): Allow unused
unreferenced vars when not optimizing.
* gfortran.dg/pr43808.f90: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@166509 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/cfgexpand.c')
| -rw-r--r-- | gcc/cfgexpand.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c index c44649e857d..784639d9e65 100644 --- a/gcc/cfgexpand.c +++ b/gcc/cfgexpand.c @@ -516,9 +516,11 @@ update_alias_info_with_stack_vars (void) unsigned int uid = DECL_PT_UID (decl); /* We should never end up partitioning SSA names (though they may end up on the stack). Neither should we allocate stack - space to something that is unused and thus unreferenced. */ + space to something that is unused and thus unreferenced, except + for -O0 where we are preserving even unreferenced variables. */ gcc_assert (DECL_P (decl) - && referenced_var_lookup (DECL_UID (decl))); + && (!optimize + || referenced_var_lookup (DECL_UID (decl)))); bitmap_set_bit (part, uid); *((bitmap *) pointer_map_insert (decls_to_partitions, (void *)(size_t) uid)) = part; @@ -684,8 +686,7 @@ partition_stack_vars (void) } } - if (optimize) - update_alias_info_with_stack_vars (); + update_alias_info_with_stack_vars (); } /* A debugging aid for expand_used_vars. Dump the generated partitions. */ |