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| author | Nathan Sidwell <nathan@codesourcery.com> | 2002-07-29 18:40:45 +0000 |
|---|---|---|
| committer | Nathan Sidwell <nathan@gcc.gnu.org> | 2002-07-29 18:40:45 +0000 |
| commit | 6c208acd84403e4b98b780e8a6e8ed46bf765e46 (patch) | |
| tree | e199ba3c591b9f03a67f3f435503afb1315dbc13 /gcc/basic-block.h | |
| parent | 624f0d6033f211962065a7a7d5561603326d0d3e (diff) | |
| download | gcc-6c208acd84403e4b98b780e8a6e8ed46bf765e46.tar.gz | |
profile.c: Add file comment describing the overall algorithm and structures.
* profile.c: Add file comment describing the overall algorithm and
structures.
(struct edge_info): Add comments.
(struct bb_info): Add comments.
* basic-block.h (EDGE_*): Add comments.
* doc/gcov.texi (Gcov Data Files): Document bit flags.
From-SVN: r55842
Diffstat (limited to 'gcc/basic-block.h')
| -rw-r--r-- | gcc/basic-block.h | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/gcc/basic-block.h b/gcc/basic-block.h index ad7f1f65dd6..507fac04313 100644 --- a/gcc/basic-block.h +++ b/gcc/basic-block.h @@ -135,13 +135,16 @@ typedef struct edge_def { in profile.c */ } *edge; -#define EDGE_FALLTHRU 1 -#define EDGE_ABNORMAL 2 -#define EDGE_ABNORMAL_CALL 4 -#define EDGE_EH 8 -#define EDGE_FAKE 16 -#define EDGE_DFS_BACK 32 -#define EDGE_CAN_FALLTHRU 64 +#define EDGE_FALLTHRU 1 /* 'Straight line' flow */ +#define EDGE_ABNORMAL 2 /* Strange flow, like computed + label, or eh */ +#define EDGE_ABNORMAL_CALL 4 /* Call with abnormal exit + like an exception, or sibcall */ +#define EDGE_EH 8 /* Exception throw */ +#define EDGE_FAKE 16 /* Not a real edge (profile.c) */ +#define EDGE_DFS_BACK 32 /* A backwards edge */ +#define EDGE_CAN_FALLTHRU 64 /* Candidate for straight line + flow. */ #define EDGE_COMPLEX (EDGE_ABNORMAL | EDGE_ABNORMAL_CALL | EDGE_EH) |