diff options
Diffstat (limited to 'gcc/flow.c')
| -rw-r--r-- | gcc/flow.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/gcc/flow.c b/gcc/flow.c index 763fbadcb5b..6a0022d77e5 100644 --- a/gcc/flow.c +++ b/gcc/flow.c @@ -140,6 +140,7 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA #include "obstack.h" #include "splay-tree.h" +#include "tree-pass.h" #ifndef HAVE_epilogue #define HAVE_epilogue 0 @@ -4357,6 +4358,23 @@ recompute_reg_usage (void) update_life_info (NULL, UPDATE_LIFE_LOCAL, PROP_REG_INFO | PROP_DEATH_NOTES); } +struct tree_opt_pass pass_recompute_reg_usage = +{ + NULL, /* name */ + NULL, /* gate */ + recompute_reg_usage, /* execute */ + NULL, /* sub */ + NULL, /* next */ + 0, /* static_pass_number */ + 0, /* tv_id */ + 0, /* properties_required */ + 0, /* properties_provided */ + 0, /* properties_destroyed */ + 0, /* todo_flags_start */ + 0, /* todo_flags_finish */ + 0 /* letter */ +}; + /* Optionally removes all the REG_DEAD and REG_UNUSED notes from a set of blocks. If BLOCKS is NULL, assume the universal set. Returns a count of the number of registers that died. */ @@ -4504,3 +4522,131 @@ reg_set_to_hard_reg_set (HARD_REG_SET *to, bitmap from) SET_HARD_REG_BIT (*to, i); } } + + +static bool +gate_remove_death_notes (void) +{ + return flag_profile_values; +} + +static void +rest_of_handle_remove_death_notes (void) +{ + count_or_remove_death_notes (NULL, 1); +} + +struct tree_opt_pass pass_remove_death_notes = +{ + NULL, /* name */ + gate_remove_death_notes, /* gate */ + rest_of_handle_remove_death_notes, /* execute */ + NULL, /* sub */ + NULL, /* next */ + 0, /* static_pass_number */ + 0, /* tv_id */ + 0, /* properties_required */ + 0, /* properties_provided */ + 0, /* properties_destroyed */ + 0, /* todo_flags_start */ + 0, /* todo_flags_finish */ + 0 /* letter */ +}; + +/* Perform life analysis. */ +static void +rest_of_handle_life (void) +{ + regclass_init (); + + life_analysis (dump_file, PROP_FINAL); + if (optimize) + cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE | CLEANUP_LOG_LINKS + | (flag_thread_jumps ? CLEANUP_THREADING : 0)); + + if (extra_warnings) + { + setjmp_vars_warning (DECL_INITIAL (current_function_decl)); + setjmp_args_warning (); + } + + if (optimize) + { + if (initialize_uninitialized_subregs ()) + { + /* Insns were inserted, and possibly pseudos created, so + things might look a bit different. */ + allocate_reg_life_data (); + update_life_info (NULL, UPDATE_LIFE_GLOBAL_RM_NOTES, + PROP_LOG_LINKS | PROP_REG_INFO | PROP_DEATH_NOTES); + } + } + + no_new_pseudos = 1; +} + +struct tree_opt_pass pass_life = +{ + "life", /* name */ + NULL, /* gate */ + rest_of_handle_life, /* execute */ + NULL, /* sub */ + NULL, /* next */ + 0, /* static_pass_number */ + TV_FLOW, /* tv_id */ + 0, /* properties_required */ + 0, /* properties_provided */ + 0, /* properties_destroyed */ + TODO_verify_flow, /* todo_flags_start */ + TODO_dump_func | + TODO_ggc_collect, /* todo_flags_finish */ + 'f' /* letter */ +}; + +static void +rest_of_handle_flow2 (void) +{ + /* Re-create the death notes which were deleted during reload. */ +#ifdef ENABLE_CHECKING + verify_flow_info (); +#endif + + /* If optimizing, then go ahead and split insns now. */ +#ifndef STACK_REGS + if (optimize > 0) +#endif + split_all_insns (0); + + if (flag_branch_target_load_optimize) + branch_target_load_optimize (epilogue_completed); + + if (optimize) + cleanup_cfg (CLEANUP_EXPENSIVE); + + /* On some machines, the prologue and epilogue code, or parts thereof, + can be represented as RTL. Doing so lets us schedule insns between + it and the rest of the code and also allows delayed branch + scheduling to operate in the epilogue. */ + thread_prologue_and_epilogue_insns (get_insns ()); + epilogue_completed = 1; + flow2_completed = 1; +} + +struct tree_opt_pass pass_flow2 = +{ + "flow2", /* name */ + NULL, /* gate */ + rest_of_handle_flow2, /* execute */ + NULL, /* sub */ + NULL, /* next */ + 0, /* static_pass_number */ + TV_FLOW2, /* tv_id */ + 0, /* properties_required */ + 0, /* properties_provided */ + 0, /* properties_destroyed */ + TODO_verify_flow, /* todo_flags_start */ + TODO_dump_func | + TODO_ggc_collect, /* todo_flags_finish */ + 'w' /* letter */ +}; + |
