diff options
| author | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-11-18 10:33:36 +0000 |
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| committer | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-11-18 10:33:36 +0000 |
| commit | 0f15bf2ebe4b001a06ab7869f0c7bcbb74b5469e (patch) | |
| tree | 7393ac7f037f04ea997b60a08f0eba639c9798d6 /gcc/cfgexpand.c | |
| parent | 80135bd9bbf06da9d0214ece3c59c301d3af3a2b (diff) | |
| download | gcc-0f15bf2ebe4b001a06ab7869f0c7bcbb74b5469e.tar.gz | |
2010-11-18 Basile Starynkevitch <basile@starynkevitch.net>
MELT branch merged with trunk rev 166897
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/melt-branch@166899 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. */ |