diff options
Diffstat (limited to 'gcc/gimple-expr.c')
| -rw-r--r-- | gcc/gimple-expr.c | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/gcc/gimple-expr.c b/gcc/gimple-expr.c index b558d90..baed630 100644 --- a/gcc/gimple-expr.c +++ b/gcc/gimple-expr.c @@ -375,45 +375,6 @@ copy_var_decl (tree var, tree name, tree type) return copy; } -/* Given SSA_NAMEs NAME1 and NAME2, return true if they are candidates for - coalescing together, false otherwise. - - This must stay consistent with var_map_base_init in tree-ssa-live.c. */ - -bool -gimple_can_coalesce_p (tree name1, tree name2) -{ - /* First check the SSA_NAME's associated DECL. We only want to - coalesce if they have the same DECL or both have no associated DECL. */ - tree var1 = SSA_NAME_VAR (name1); - tree var2 = SSA_NAME_VAR (name2); - var1 = (var1 && (!VAR_P (var1) || !DECL_IGNORED_P (var1))) ? var1 : NULL_TREE; - var2 = (var2 && (!VAR_P (var2) || !DECL_IGNORED_P (var2))) ? var2 : NULL_TREE; - if (var1 != var2) - return false; - - /* Now check the types. If the types are the same, then we should - try to coalesce V1 and V2. */ - tree t1 = TREE_TYPE (name1); - tree t2 = TREE_TYPE (name2); - if (t1 == t2) - return true; - - /* If the types are not the same, check for a canonical type match. This - (for example) allows coalescing when the types are fundamentally the - same, but just have different names. - - Note pointer types with different address spaces may have the same - canonical type. Those are rejected for coalescing by the - types_compatible_p check. */ - if (TYPE_CANONICAL (t1) - && TYPE_CANONICAL (t1) == TYPE_CANONICAL (t2) - && types_compatible_p (t1, t2)) - return true; - - return false; -} - /* Strip off a legitimate source ending from the input string NAME of length LEN. Rather than having to know the names used by all of our front ends, we strip off an ending of a period followed by |