diff options
| author | abel <> | 2012-01-27 13:47:41 +0000 |
|---|---|---|
| committer | abel <> | 2012-01-27 13:47:41 +0000 |
| commit | 5025dc891eb7dda5177876039fa7ef69a88f39c8 (patch) | |
| tree | 083a3f9c465c92d16c9531e2235042ab1fc90ad1 /gcc/doc/invoke.texi | |
| parent | 181fdceb4df9360533bf4dff4970157703758e37 (diff) | |
PR middle-end/51389
* Makefile.in (tree-data-ref.o): Depend on $(PARAMS_H).
* tree-data-ref.h (find_data_references_in_loop): Remove declaration.
* tree-data-ref.c (find_data_references_in_loop): Make static.
(compute_all_dependences): Change return type to bool. Bail out
for too many datarefs in a loop. Move the hunk resetting the data
dependences vector from ...
(compute_data_dependences_for_loop): ... here. Account for
compute_all_dependences returning false.
(compute_data_dependences_for_bb): Likewise.
* params.def (PARAM_LOOP_MAX_DATAREFS_FOR_DATADEPS): New param.
* doc/invoke.texi (loop-max-datarefs-for-datadeps): Document it.
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 9f628bf899a..622b2309d95 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -9115,6 +9115,13 @@ with more basic blocks than this parameter won't have loop invariant motion optimization performed on them. The default value of the parameter is 1000 for -O1 and 10000 for -O2 and above. +@item loop-max-datarefs-for-datadeps +Building data dapendencies is expensive for very large loops. This +parameter limits the number of data references in loops that are +considered for data dependence analysis. These large loops will not +be handled then by the optimizations using loop data dependencies. +The default value is 1000. + @item max-vartrack-size Sets a maximum number of hash table slots to use during variable tracking dataflow analysis of any function. If this limit is exceeded |