diff options
Diffstat (limited to 'gcc/tree-ssanames.c')
| -rw-r--r-- | gcc/tree-ssanames.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/gcc/tree-ssanames.c b/gcc/tree-ssanames.c index 913d142..bd5d10a 100644 --- a/gcc/tree-ssanames.c +++ b/gcc/tree-ssanames.c @@ -252,10 +252,12 @@ flush_ssaname_freelist (void) /* Return an SSA_NAME node for variable VAR defined in statement STMT in function FN. STMT may be an empty statement for artificial references (e.g., default definitions created when a variable is - used without a preceding definition). */ + used without a preceding definition). If VERISON is not zero then + allocate the SSA name with that version. */ tree -make_ssa_name_fn (struct function *fn, tree var, gimple *stmt) +make_ssa_name_fn (struct function *fn, tree var, gimple *stmt, + unsigned int version) { tree t; use_operand_p imm; @@ -265,8 +267,19 @@ make_ssa_name_fn (struct function *fn, tree var, gimple *stmt) || TREE_CODE (var) == RESULT_DECL || (TYPE_P (var) && is_gimple_reg_type (var))); + /* Get the specified SSA name version. */ + if (version != 0) + { + t = make_node (SSA_NAME); + SSA_NAME_VERSION (t) = version; + if (version >= SSANAMES (fn)->length ()) + vec_safe_grow_cleared (SSANAMES (fn), version + 1); + gcc_assert ((*SSANAMES (fn))[version] == NULL); + (*SSANAMES (fn))[version] = t; + ssa_name_nodes_created++; + } /* If our free list has an element, then use it. */ - if (!vec_safe_is_empty (FREE_SSANAMES (fn))) + else if (!vec_safe_is_empty (FREE_SSANAMES (fn))) { t = FREE_SSANAMES (fn)->pop (); ssa_name_nodes_reused++; |