diff options
| author | Andrew MacLeod <amacleod@redhat.com> | 2001-07-26 13:59:22 +0000 |
|---|---|---|
| committer | Andrew Macleod <amacleod@gcc.gnu.org> | 2001-07-26 13:59:22 +0000 |
| commit | 4a121cc34cd8153380aee3246979b8fb35e2a88f (patch) | |
| tree | d529585912a27f24d918c1691b52427ec3a93d8a /gcc/doc | |
| parent | db3ef87b8a1858f77998a9e8a5275cc5755350d7 (diff) | |
| download | gcc-4a121cc34cd8153380aee3246979b8fb35e2a88f.zip gcc-4a121cc34cd8153380aee3246979b8fb35e2a88f.tar.gz gcc-4a121cc34cd8153380aee3246979b8fb35e2a88f.tar.bz2 | |
params.def (PARAM_MAX_PENDING_LIST_LENGTH): Add parameter to limit length of dependancy flush list.
2001-07-26 Andrew MacLeod <amacleod@redhat.com>
* params.def (PARAM_MAX_PENDING_LIST_LENGTH): Add parameter to
limit length of dependancy flush list.
* params.h (MAX_PENDING_LIST_LENGTH): Define.
* sched-int.h (struct deps): Add pending_flush_length field.
* sched-deps.c (flush_pending_lists): Last_pending_memory_flush now
has 1 element in it.
(sched_analyze_1): Use MAX_PENDING_LIST_LENGTH.
(sched_analyze): After a jump, if the pending memory flush list is too
large, flush the pending lists.
(init_deps): Initialize pending_flush_length to 0.
* doc/invoke.texi (max_pending_list_length): Document parameter.
From-SVN: r44398
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 3b13ad8..f3b3e8e 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -3808,6 +3808,12 @@ optimization will not be done. @item max-gcse-passes The maximum number of passes of GCSE to run. +@item max-pending-list-length +The maximum number of pending dependancies scheduling will allow +before flushing the current state and starting over. Large functions +with few branches or calls can create excessively large lists which +needlessly consume memory and resources. + @item max-inline-insns If an function contains more than this many instructions, it will not be inlined. This option is precisely equivalent to |