diff options
Diffstat (limited to 'gcc/loop-invariant.c')
| -rw-r--r-- | gcc/loop-invariant.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/gcc/loop-invariant.c b/gcc/loop-invariant.c index 3e82f1e..b880ead 100644 --- a/gcc/loop-invariant.c +++ b/gcc/loop-invariant.c @@ -681,11 +681,7 @@ find_defs (struct loop *loop) loop->num); } - df_remove_problem (df_chain); - df_process_deferred_rescans (); df_chain_add_problem (DF_UD_CHAIN); - df_live_add_problem (); - df_live_set_all_dirty (); df_set_flags (DF_RD_PRUNE_DEAD_DEFS); df_analyze_loop (loop); check_invariant_table_size (); @@ -1891,6 +1887,10 @@ move_invariants (struct loop *loop) GENERAL_REGS, NO_REGS, GENERAL_REGS); } } + /* Remove the DF_UD_CHAIN problem added in find_defs before rescanning, + to save a bit of compile time. */ + df_remove_problem (df_chain); + df_process_deferred_rescans (); } /* Initializes invariant motion data. */ @@ -2254,6 +2254,14 @@ move_loop_invariants (void) { struct loop *loop; + if (optimize == 1) + df_live_add_problem (); + /* ??? This is a hack. We should only need to call df_live_set_all_dirty + for optimize == 1, but can_move_invariant_reg relies on DF_INSN_LUID + being up-to-date. That isn't always true (even after df_analyze) + because df_process_deferred_rescans doesn't necessarily cause + blocks to be rescanned. */ + df_live_set_all_dirty (); if (flag_ira_loop_pressure) { df_analyze (); @@ -2286,5 +2294,8 @@ move_loop_invariants (void) invariant_table = NULL; invariant_table_size = 0; + if (optimize == 1) + df_remove_problem (df_live); + checking_verify_flow_info (); } |