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+2004-08-17 Dorit Naishlos <dorit@il.ibm.com>
+
+ * tree-vectorizer.c: New File: loop vectorization on SSAed GIMPLE trees.
+ * tree-vectorizer.h: New File: Same.
+ * Makefile.in (tree-vectorizer.c, tree-vectorizer.h): Add new files.
+ * common.opt (ftree-vectorize): New flag to enable vectorization.
+ * timevar.def (TV_TREE_VECTORIZATION): New dump file for vectorization
+ pass.
+ * tree-data-ref.h (init_data_ref): Additional argument.
+ (array_base_name_differ_p): Moved to tree-data-ref.c.
+ * tree-data-ref.c (array_base_name_differ_p): Revised.
+ (initialize_data_dependence_relation): Call array_base_name_differ_p
+ with an extra argument.
+ (analyze_all_data_dependences): Same.
+ (init_data_ref): Additional argument is_read to set DR_IS_READ.
+ * tree-ssa-phiopt.c (empty_block_p): Expose for usage out of this file.
+ * tree-flow.h (vectorize_loops, empty_block_p): Add declaration.
+ * tree-optimize.c (pass_vectorize): Schedule the vectorization pass.
+ * tree-pass.h (tree_opt_pass pass_vectorize): Declare the new
+ vectorization pass.
+ * tree-ssa-loop.c (tree_ssa_loop_init): Call scev_initialize.
+ (tree_ssa_loop_done): Call scev_finalize.
+ (tree_vectorize): Define the new vectorization pass.
+ * defaults.h (UNITS_PER_SIMD_WORD): Allow targets to specify the size of
+ the vector they support (until support for multiple vector sizes is
+ added to the vectorizer).
+ * config/i386/i386.h (UNITS_PER_SIMD_WORD): Define.
+ * config/rs6000/rs6000.h (UNITS_PER_SIMD_WORD): Define.
+ * invoke.texi (fdump-tree-vect, ftree-vectorize): Add
+ documentation.
+
2004-08-17 Nathan Sidwell <nathan@codesourcery.com>
* objc/objc-act.c (build_protocol_initializer): Fix build_int_cst