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+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.
+
2011-09-06 Richard Guenther <rguenther@suse.de>
PR tree-optimization/47025