diff options
Diffstat (limited to 'gcc/tree-dfa.c')
| -rw-r--r-- | gcc/tree-dfa.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/gcc/tree-dfa.c b/gcc/tree-dfa.c index f6986c1..9a3b072 100644 --- a/gcc/tree-dfa.c +++ b/gcc/tree-dfa.c @@ -823,6 +823,29 @@ stmt_references_abnormal_ssa_name (gimple *stmt) return false; } +/* If STMT takes any abnormal PHI values as input, replace them with + local copies. */ + +void +replace_abnormal_ssa_names (gimple *stmt) +{ + ssa_op_iter oi; + use_operand_p use_p; + + FOR_EACH_SSA_USE_OPERAND (use_p, stmt, oi, SSA_OP_USE) + { + tree op = USE_FROM_PTR (use_p); + if (TREE_CODE (op) == SSA_NAME && SSA_NAME_OCCURS_IN_ABNORMAL_PHI (op)) + { + gimple_stmt_iterator gsi = gsi_for_stmt (stmt); + tree new_name = make_ssa_name (TREE_TYPE (op)); + gassign *assign = gimple_build_assign (new_name, op); + gsi_insert_before (&gsi, assign, GSI_SAME_STMT); + SET_USE (use_p, new_name); + } + } +} + /* Pair of tree and a sorting index, for dump_enumerated_decls. */ struct GTY(()) numbered_tree { |