diff options
| author | bonzini <bonzini@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-12-14 17:40:46 +0000 |
|---|---|---|
| committer | bonzini <bonzini@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-12-14 17:40:46 +0000 |
| commit | 84da895440a5f84f551c56edb5557b9e536c0439 (patch) | |
| tree | a0bfa427f7b8eddddeb56a76dc1d3684d9e702c0 /gcc/df.h | |
| parent | 18f95a3608ef0e138e060663adde716064ea649b (diff) | |
| download | gcc-84da895440a5f84f551c56edb5557b9e536c0439.tar.gz | |
2007-12-14 Paolo Bonzini <bonzini@gnu.org>
* df-core.c: Update comments referring to removed features.
* df-problems.c: Likewise.
* df-scan.c: Likewise.
* df.h: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@130937 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/df.h')
| -rw-r--r-- | gcc/df.h | 6 |
1 files changed, 4 insertions, 2 deletions
@@ -36,10 +36,12 @@ struct df_problem; struct df_link; /* Data flow problems. All problems must have a unique id here. */ + /* Scanning is not really a dataflow problem, but it is useful to have the basic block functions in the vector so that things get done in - a uniform manner. The first four problems are always defined. The - last 5 are optional and can be added or deleted at any time. */ + a uniform manner. The last four problems can be added or deleted + at any time are always defined (though LIVE is always there at -O2 + or higher); the others are always there. */ #define DF_SCAN 0 #define DF_LR 1 /* Live Registers backward. */ #define DF_LIVE 2 /* Live Registers & Uninitialized Registers */ |