diff options
Diffstat (limited to 'gcc/tree-ssa-pre.c')
| -rw-r--r-- | gcc/tree-ssa-pre.c | 19 |
1 files changed, 3 insertions, 16 deletions
diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index c947e0f..69dbfb2 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -383,7 +383,6 @@ static void bitmap_set_copy (bitmap_set_t, bitmap_set_t); static bool bitmap_set_contains_value (bitmap_set_t, tree); static void bitmap_insert_into_set (bitmap_set_t, tree); static bitmap_set_t bitmap_set_new (void); -static bool is_undefined_value (tree); static tree create_expression_by_pieces (basic_block, tree, tree); static tree find_or_generate_expression (basic_block, tree, tree); @@ -1328,7 +1327,7 @@ phi_translate_1 (tree expr, bitmap_set_t set1, bitmap_set_t set2, if (is_gimple_min_invariant (def)) return def; - if (is_undefined_value (def)) + if (TREE_CODE (def) == SSA_NAME && ssa_undefined_value_p (def)) return NULL; val = get_value_handle (def); @@ -2889,18 +2888,6 @@ insert (void) } -/* Return true if VAR is an SSA variable with no defining statement in - this procedure, *AND* isn't a live-on-entry parameter. */ - -static bool -is_undefined_value (tree expr) -{ - return (TREE_CODE (expr) == SSA_NAME - && IS_EMPTY_STMT (SSA_NAME_DEF_STMT (expr)) - /* PARM_DECLs and hard registers are always defined. */ - && TREE_CODE (SSA_NAME_VAR (expr)) != PARM_DECL); -} - /* Add OP to EXP_GEN (block), and possibly to the maximal set if it is not defined by a phi node. PHI nodes can't go in the maximal sets because they are not in @@ -2912,7 +2899,7 @@ add_to_exp_gen (basic_block block, tree op) { if (!in_fre) { - if (TREE_CODE (op) == SSA_NAME && is_undefined_value (op)) + if (TREE_CODE (op) == SSA_NAME && ssa_undefined_value_p (op)) return; bitmap_value_insert_into_set (EXP_GEN (block), op); if (TREE_CODE (op) != SSA_NAME @@ -3415,7 +3402,7 @@ make_values_for_stmt (tree stmt, basic_block block) AVAIL_OUT (block)); } /* None of the rest of these can be PRE'd. */ - if (TREE_CODE (rhs) == SSA_NAME && !is_undefined_value (rhs)) + if (TREE_CODE (rhs) == SSA_NAME && !ssa_undefined_value_p (rhs)) add_to_exp_gen (block, rhs); return true; } |