diff options
| author | Enkovich Ilya <ilya.enkovich@intel.com> | 2011-09-06 16:42:47 +0000 |
|---|---|---|
| committer | H.J. Lu <hongjiu.lu@intel.com> | 2011-09-06 16:42:47 +0000 |
| commit | cc78f6dbc5affd5f9c80abc41c2c246377390140 (patch) | |
| tree | 1f9104f6409decb81158ba4c73d5eed24b186893 /gcc/params.def | |
| parent | 6a8b08188e11d0f42d7f2e76c2eef580a8dbf96a (diff) | |
PR middle-end/44382: Tree reassociation improvement
gcc/
2011-09-06 Enkovich Ilya <ilya.enkovich@intel.com>
PR middle-end/44382
* target.def (reassociation_width): New hook.
* doc/tm.texi.in (reassociation_width): Likewise.
* doc/tm.texi (reassociation_width): Likewise.
* doc/invoke.texi (tree-reassoc-width): New param documented.
* hooks.h (hook_int_uint_mode_1): New default hook.
* hooks.c (hook_int_uint_mode_1): Likewise.
* config/i386/i386.h (ix86_tune_indices): Add
X86_TUNE_REASSOC_INT_TO_PARALLEL and
X86_TUNE_REASSOC_FP_TO_PARALLEL.
(TARGET_REASSOC_INT_TO_PARALLEL): New.
(TARGET_REASSOC_FP_TO_PARALLEL): Likewise.
* config/i386/i386.c (initial_ix86_tune_features): Add
X86_TUNE_REASSOC_INT_TO_PARALLEL and
X86_TUNE_REASSOC_FP_TO_PARALLEL.
(ix86_reassociation_width) implementation of
new hook for i386 target.
* params.def (PARAM_TREE_REASSOC_WIDTH): New param added.
* tree-ssa-reassoc.c (get_required_cycles): New function.
(get_reassociation_width): Likewise.
(swap_ops_for_binary_stmt): Likewise.
(rewrite_expr_tree_parallel): Likewise.
(rewrite_expr_tree): Refactored. Part of code moved into
swap_ops_for_binary_stmt.
(reassociate_bb): Now checks reassociation width to be used
and call rewrite_expr_tree_parallel instead of rewrite_expr_tree
if needed.
gcc/testsuite/
2011-09-06 Enkovich Ilya <ilya.enkovich@intel.com>
* gcc.dg/tree-ssa/pr38533.c (dg-options): Added option
--param tree-reassoc-width=1.
* gcc.dg/tree-ssa/reassoc-24.c: New test.
* gcc.dg/tree-ssa/reassoc-25.c: Likewise.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@178602 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/params.def')
| -rw-r--r-- | gcc/params.def | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/params.def b/gcc/params.def index e8372ed7eb5..c376c80ebfb 100644 --- a/gcc/params.def +++ b/gcc/params.def @@ -914,6 +914,13 @@ DEFPARAM (PARAM_ALLOW_STORE_DATA_RACES, "Allow new data races on stores to be introduced", 1, 0, 1) +/* Reassociation width to be used by tree reassoc optimization. */ +DEFPARAM (PARAM_TREE_REASSOC_WIDTH, + "tree-reassoc-width", + "Set the maximum number of instructions executed in parallel in " + "reassociated tree. If 0, use the target dependent heuristic.", + 0, 0, 0) + /* Local variables: |