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| author | Jan Hubicka <jh@suse.cz> | 2001-07-23 16:08:12 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2001-07-23 14:08:12 +0000 |
| commit | 0005550b5832aa6f0a3d7f343319c6b5b327dde8 (patch) | |
| tree | 3dbb57e04c149a6d0f4908ed9c0351fc46670790 /gcc/toplev.c | |
| parent | 4edc91ae51a40b656c11d7dffbe74692be8d755e (diff) | |
| download | gcc-0005550b5832aa6f0a3d7f343319c6b5b327dde8.zip gcc-0005550b5832aa6f0a3d7f343319c6b5b327dde8.tar.gz gcc-0005550b5832aa6f0a3d7f343319c6b5b327dde8.tar.bz2 | |
basic-block.h (find_sub_basic_block): Declare.
* basic-block.h (find_sub_basic_block): Declare.
* flow.c (make_edges): New arguments MIN and MAX;
(find_sub_basic_blocks): Revamp to use make_edges
and purge_dead_edges.
(find_basic_blocks): Update call of find_sub_basic_block.
* recog.c (split_all_insns): Always expect CFG to be consistent;
call find_sub_basic_blocks in case something has changed.
* toplev.c (rest_of_compilation): Always call split_all_insns once CFG
has been built.
* basic-block.h (delete_noop_moves): Declare.
* combine.c (combine_instructions): Call it.
(recog_for_combine): Tolerate noop moves
(distribute_notes): Force refresh when register dies at noop move.
* flow.c (delete_noop_moves): Use BB structure; delete JUMP insns
too.
(life_analysis): Update delete_noop_moves call.
(set_noop_p): Move too ...
* rtlanal.c (noop_move_p): ... here.
* rtl.h (noop_move_p): Declare.
* basic-block.h (purge_all_dead_edges, purge_dead_edges): New functions.
* toplev.c (rest_of_compilation): Conditionally call purge_all_dead_edges
after combine.
* gcse.c (cprop_cc0_jump, cprop_insn): New argument "basic_block".
(cprop_jump): Likewise; call purge_dead_edges if substitution suceeded.
From-SVN: r44267
Diffstat (limited to 'gcc/toplev.c')
| -rw-r--r-- | gcc/toplev.c | 17 |
1 files changed, 6 insertions, 11 deletions
diff --git a/gcc/toplev.c b/gcc/toplev.c index 13a5d05..613ef0d 100644 --- a/gcc/toplev.c +++ b/gcc/toplev.c @@ -3265,7 +3265,7 @@ rest_of_compilation (decl) timevar_pop (TV_JUMP); timevar_push (TV_FLOW); - find_basic_blocks (insns, max_reg_num (), rtl_dump_file); + purge_all_dead_edges (); cleanup_cfg (CLEANUP_EXPENSIVE); /* Blimey. We've got to have the CFG up to date for the call to @@ -3441,16 +3441,6 @@ rest_of_compilation (decl) timevar_pop (TV_RELOAD_CSE_REGS); } - /* If optimizing, then go ahead and split insns now since we are about - to recompute flow information anyway. */ - if (optimize > 0) - { - int old_labelnum = max_label_num (); - - split_all_insns (0); - rebuild_label_notes_after_reload |= old_labelnum != max_label_num (); - } - /* Register allocation and reloading may have turned an indirect jump into a direct jump. If so, we must rebuild the JUMP_LABEL fields of jumping instructions. */ @@ -3470,6 +3460,11 @@ rest_of_compilation (decl) open_dump_file (DFI_flow2, decl); find_basic_blocks (insns, max_reg_num (), rtl_dump_file); + + /* If optimizing, then go ahead and split insns now. */ + if (optimize > 0) + split_all_insns (0); + cleanup_cfg (0); /* On some machines, the prologue and epilogue code, or parts thereof, |