diff options
Diffstat (limited to 'gcc/tree-ssanames.c')
| -rw-r--r-- | gcc/tree-ssanames.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/gcc/tree-ssanames.c b/gcc/tree-ssanames.c index 6a0fda6006f..d4982706676 100644 --- a/gcc/tree-ssanames.c +++ b/gcc/tree-ssanames.c @@ -191,4 +191,29 @@ release_ssa_name (tree var) } } +/* Creates a duplicate of a ssa name NAME defined in statement STMT. */ + +tree +duplicate_ssa_name (tree name, tree stmt) +{ + tree new_name = make_ssa_name (SSA_NAME_VAR (name), stmt); + struct ptr_info_def *old_ptr_info = SSA_NAME_PTR_INFO (name); + struct ptr_info_def *new_ptr_info; + + if (!old_ptr_info) + return new_name; + + new_ptr_info = ggc_alloc (sizeof (struct ptr_info_def)); + *new_ptr_info = *old_ptr_info; + + if (old_ptr_info->pt_vars) + { + new_ptr_info->pt_vars = BITMAP_GGC_ALLOC (); + bitmap_copy (new_ptr_info->pt_vars, old_ptr_info->pt_vars); + } + + SSA_NAME_PTR_INFO (new_name) = new_ptr_info; + return new_name; +} + #include "gt-tree-ssanames.h" |