diff options
Diffstat (limited to 'gcc/tree-ssa-threadbackward.c')
| -rw-r--r-- | gcc/tree-ssa-threadbackward.c | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/gcc/tree-ssa-threadbackward.c b/gcc/tree-ssa-threadbackward.c index 515a94b..428cf07 100644 --- a/gcc/tree-ssa-threadbackward.c +++ b/gcc/tree-ssa-threadbackward.c @@ -39,9 +39,11 @@ along with GCC; see the file COPYING3. If not see class thread_jumps { - public: +public: void find_jump_threads_backwards (basic_block bb, bool speed_p); - private: + bool thread_through_all_blocks (); + +private: edge profitable_jump_thread_path (basic_block bbi, tree name, tree arg, bool *creates_irreducible_loop); void convert_and_register_current_path (edge taken_edge); @@ -65,8 +67,16 @@ class thread_jumps /* Indicate that we could increase code size to improve the code path. */ bool m_speed_p; + + jump_thread_path_registry m_registry; }; +bool +thread_jumps::thread_through_all_blocks () +{ + return m_registry.thread_through_all_blocks (true); +} + /* Simple helper to get the last statement from BB, which is assumed to be a control statement. Return NULL if the last statement is not a control statement. */ @@ -459,7 +469,7 @@ thread_jumps::profitable_jump_thread_path (basic_block bbi, tree name, void thread_jumps::convert_and_register_current_path (edge taken_edge) { - vec<jump_thread_edge *> *jump_thread_path = new vec<jump_thread_edge *> (); + vec<jump_thread_edge *> *path = m_registry.allocate_thread_path (); /* Record the edges between the blocks in PATH. */ for (unsigned int j = 0; j + 1 < m_path.length (); j++) @@ -469,16 +479,17 @@ thread_jumps::convert_and_register_current_path (edge taken_edge) edge e = find_edge (bb1, bb2); gcc_assert (e); - jump_thread_edge *x = new jump_thread_edge (e, EDGE_FSM_THREAD); - jump_thread_path->safe_push (x); + jump_thread_edge *x + = m_registry.allocate_thread_edge (e, EDGE_FSM_THREAD); + path->safe_push (x); } /* Add the edge taken when the control variable has value ARG. */ jump_thread_edge *x - = new jump_thread_edge (taken_edge, EDGE_NO_COPY_SRC_BLOCK); - jump_thread_path->safe_push (x); + = m_registry.allocate_thread_edge (taken_edge, EDGE_NO_COPY_SRC_BLOCK); + path->safe_push (x); - register_jump_thread (jump_thread_path); + m_registry.register_jump_thread (path); --m_max_threaded_paths; } @@ -827,7 +838,7 @@ pass_thread_jumps::execute (function *fun) if (EDGE_COUNT (bb->succs) > 1) threader.find_jump_threads_backwards (bb, true); } - bool changed = thread_through_all_blocks (true); + bool changed = threader.thread_through_all_blocks (); loop_optimizer_finalize (); return changed ? TODO_cleanup_cfg : 0; @@ -888,7 +899,7 @@ pass_early_thread_jumps::execute (function *fun) if (EDGE_COUNT (bb->succs) > 1) threader.find_jump_threads_backwards (bb, false); } - thread_through_all_blocks (true); + threader.thread_through_all_blocks (); loop_optimizer_finalize (); return 0; |