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| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-03-17 12:36:04 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-03-17 12:36:04 +0000 |
| commit | 1242bee6bd318640a198f783eff49fcb086e94c5 (patch) | |
| tree | c09b459b96bf1b799f0dc616fcf477cc1bb299cd /gcc/params.def | |
| parent | c75be2fe9633253367cbc9d1ae26776b5b7e175a (diff) | |
| download | gcc-1242bee6bd318640a198f783eff49fcb086e94c5.tar.gz | |
PR rtl-optimization/48141
* params.def (PARAM_MAX_DSE_ACTIVE_LOCAL_STORES): New.
* dse.c: Include params.h.
(active_local_stores_len): New variable.
(add_wild_read, dse_step1): Clear it when setting active_local_stores
to NULL.
(record_store, check_mem_read_rtx): Decrease it when removing
from the chain.
(scan_insn): Likewise. Increase it when adding to chain, if it
reaches PARAM_MAX_DSE_ACTIVE_LOCAL_STORES limit, set to 1 and
set active_local_stores to NULL before the addition.
* Makefile.in (dse.o): Depend on $(PARAMS_H).
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@171090 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/params.def')
| -rw-r--r-- | gcc/params.def | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/params.def b/gcc/params.def index 5749eb2e5f3..e5a82e906b8 100644 --- a/gcc/params.def +++ b/gcc/params.def @@ -698,6 +698,12 @@ DEFPARAM(PARAM_MAX_SCHED_READY_INSNS, "The maximum number of instructions ready to be issued to be considered by the scheduler during the first scheduling pass", 100, 0, 0) +/* This is the maximum number of active local stores RTL DSE will consider. */ +DEFPARAM (PARAM_MAX_DSE_ACTIVE_LOCAL_STORES, + "max-dse-active-local-stores", + "Maximum number of active local stores in RTL dead store elimination", + 5000, 0, 0) + /* Prefetching and cache-optimizations related parameters. Default values are usually set by machine description. */ |