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PR middle-end/44382: Tree reassociation improvement
authorhjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
Tue, 6 Sep 2011 16:42:47 +0000 (16:42 +0000)
committerhjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
Tue, 6 Sep 2011 16:42:47 +0000 (16:42 +0000)
commit5b1c765da5574d7586afc19c043d00b17490694a
tree1f9104f6409decb81158ba4c73d5eed24b186893
parent9d17b4a85800417f8125b21a4c1c686e4017e1f6
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: svn+ssh://gcc.gnu.org/svn/gcc/trunk@178602 138bc75d-0d04-0410-961f-82ee72b054a4
15 files changed:
gcc/ChangeLog
gcc/config/i386/i386.c
gcc/config/i386/i386.h
gcc/doc/invoke.texi
gcc/doc/tm.texi
gcc/doc/tm.texi.in
gcc/hooks.c
gcc/hooks.h
gcc/params.def
gcc/target.def
gcc/testsuite/ChangeLog
gcc/testsuite/gcc.dg/tree-ssa/pr38533.c
gcc/testsuite/gcc.dg/tree-ssa/reassoc-24.c [new file with mode: 0644]
gcc/testsuite/gcc.dg/tree-ssa/reassoc-25.c [new file with mode: 0644]
gcc/tree-ssa-reassoc.c