diff options
| author | Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz> | 2002-05-20 00:25:49 +0200 |
|---|---|---|
| committer | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2002-05-19 22:25:49 +0000 |
| commit | 918ed612a1b2328a11887b7166bc07a9efde130f (patch) | |
| tree | da3145061eccb50182bb789146df5bbe4f748226 /gcc/cfgbuild.c | |
| parent | e0322d5ca59e5d8657799c2c5453319a89c7a5a5 (diff) | |
| download | gcc-918ed612a1b2328a11887b7166bc07a9efde130f.zip gcc-918ed612a1b2328a11887b7166bc07a9efde130f.tar.gz gcc-918ed612a1b2328a11887b7166bc07a9efde130f.tar.bz2 | |
basic_block.h (struct basic_block_def): Added prev_bb and next_bb fields.
* basic_block.h (struct basic_block_def): Added prev_bb and next_bb
fields.
(FOR_BB_BETWEEN, FOR_ALL_BB, FOR_ALL_BB_REVERSE): New macros for
traversing basic block chain.
(create_basic_block_structure, create_basic_block): Declaration changed.
(link_block, unlink_block): Declare.
* cfg.c (entry_exit_blocks): Initialize new fields.
(link_block, unlink_block): New.
(expunge_block_nocompact): Unlink basic block.
(dump_flow_info): Print prev_bb/next_bb fields.
* cfgbuild.c (find_basic_blocks_1, find_basic_blocks): Modified.
* cfgcleanup.c (merge_blocks_move_predecessor_nojumps): Modified.
* cfglayout.c (fixup_reorder_chain, cfg_layout_duplicate_bb): Modified.
* cfgrtl.c (create_basic_block_structure, create_basic_block,
split_block, force_nonfallthru_and_redirect, split_edge): Modified.
(verify_flow_info): Check that list agrees with numbering.
From-SVN: r53642
Diffstat (limited to 'gcc/cfgbuild.c')
| -rw-r--r-- | gcc/cfgbuild.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/gcc/cfgbuild.c b/gcc/cfgbuild.c index 5ce9d40..767b0de 100644 --- a/gcc/cfgbuild.c +++ b/gcc/cfgbuild.c @@ -476,6 +476,7 @@ find_basic_blocks_1 (f) rtx trll = NULL_RTX; rtx head = NULL_RTX; rtx end = NULL_RTX; + basic_block prev = ENTRY_BLOCK_PTR; /* We process the instructions in a slightly different way than we did previously. This is so that we see a NOTE_BASIC_BLOCK after we have @@ -492,7 +493,7 @@ find_basic_blocks_1 (f) if ((GET_CODE (insn) == CODE_LABEL || GET_CODE (insn) == BARRIER) && head) { - create_basic_block_structure (i++, head, end, bb_note); + prev = create_basic_block_structure (i++, head, end, bb_note, prev); head = end = NULL_RTX; bb_note = NULL_RTX; } @@ -506,7 +507,7 @@ find_basic_blocks_1 (f) if (head && control_flow_insn_p (insn)) { - create_basic_block_structure (i++, head, end, bb_note); + prev = create_basic_block_structure (i++, head, end, bb_note, prev); head = end = NULL_RTX; bb_note = NULL_RTX; } @@ -588,7 +589,7 @@ find_basic_blocks_1 (f) } if (head != NULL_RTX) - create_basic_block_structure (i++, head, end, bb_note); + create_basic_block_structure (i++, head, end, bb_note, prev); else if (bb_note) delete_insn (bb_note); @@ -633,6 +634,8 @@ find_basic_blocks (f, nregs, file) } n_basic_blocks = count_basic_blocks (f); + ENTRY_BLOCK_PTR->next_bb = EXIT_BLOCK_PTR; + EXIT_BLOCK_PTR->prev_bb = ENTRY_BLOCK_PTR; /* Size the basic block table. The actual structures will be allocated by find_basic_blocks_1, since we want to keep the structure pointers |